Ever walked into a conversation between experienced traders and felt like they were speaking a completely different language?
“I went long on a low-float gapper with heavy relative volume, caught the breakout at resistance, set a tight stop below VWAP, and scaled out into the move.”
If that sentence made your eyes glaze over, you’re in the right place. And honestly? Every trader on our team had the exact same reaction when they first started. Trading has its own vocabulary, and not knowing it doesn’t just make you feel lost—it can cost you real money.
Here’s the thing most glossaries get wrong: they dump 50+ terms on you in alphabetical order and call it a day. That’s a dictionary, not a learning tool. You wouldn’t learn a foreign language by reading the dictionary front to back, and you shouldn’t learn trading terminology that way either.
Instead, we’ve organized the 25+ most essential day trading terms into five categories based on when you’ll actually encounter them as a beginner. From understanding how the market works, to reading charts, to placing your first order—each section builds on the last.
If you’ve been following our Beginner’s Guide series, you already know what day trading is and how stock markets work. Now it’s time to learn the language that makes it all click.
And for those moments when you encounter a term we don’t cover here, bookmark our complete Day Trading Dictionary—it has 500+ terms with definitions you can search anytime.
Why Day Trading Has Its Own Language (And Why You Need to Learn It Fast)
Every profession has its jargon. Doctors talk about “stat” and “BP.” Pilots have “roger” and “mayday.” Day traders? We’ve got “float,” “VWAP,” and “bag holder.”
But trading lingo isn’t just insider slang designed to make beginners feel excluded. These terms exist because they describe very specific market mechanics, and understanding them directly affects your ability to make decisions under pressure.
Think of it like learning to drive. You need to know what “blind spot,” “yield,” and “right of way” mean before you merge onto a highway—not while you’re doing it. Same principle applies here.
When a stock is moving fast and you hear someone say “it’s breaking above resistance on heavy volume,” you need to process that in real time. Hesitating because you don’t know what “resistance” means could be the difference between catching a move and missing it entirely.
The good news? You don’t need to memorize hundreds of terms before you start learning. You need about 25-30 core concepts, and we’re going to walk you through every single one right now.
Quick note before we start: if a term below has its own dedicated article in our Beginner’s Guide, we’ll point you to it for the full deep dive. This article is your overview—your Rosetta Stone for day trading language.
Market Basics: The Terms That Explain How the Game Works
Before you look at a single chart or place a single trade, you need to understand the foundational vocabulary of how markets operate.
Bull / Bullish — When a stock’s price is rising or expected to rise, traders call that “bullish.” A bull market means prices are generally trending upward. The term comes from the way a bull attacks—horns thrusting upward. If someone says “I’m bullish on AAPL,” they believe Apple’s stock price is heading higher.
Bear / Bearish — The opposite of bullish. A bear market means prices are falling, and “bearish” means you expect prices to drop. Bears swipe downward—that’s the memory trick. When the overall market is selling off and traders are pessimistic, you’ll hear “it’s a bear market.”
Long — Going “long” simply means buying a stock with the expectation that its price will go up. You buy low, sell high. This is what most people picture when they think about trading. “I went long 500 shares of TSLA at $180” means “I bought 500 shares at $180, expecting the price to rise.”
Short / Short Selling — This one trips up almost every beginner. Going “short” means you sell a stock you don’t actually own—borrowing shares from your broker—hoping the price will drop so you can buy them back cheaper. You profit from the difference. It’s essentially betting that a stock’s price will fall. Short selling carries unique risks because, unlike going long where your maximum loss is what you paid, a stock’s price can theoretically rise without limit.
Position — A “position” is any trade you currently have open. If you bought 200 shares of AMD, you “have a position” in AMD. Your position can be long (you bought shares expecting a rise) or short (you borrowed and sold shares expecting a drop). When you close the trade, you “exit your position.”
Float — The float refers to the total number of shares available for the general public to trade. This is different from total shares outstanding, which includes shares held by company insiders and institutions that aren’t actively traded. Why does float matter? Low-float stocks—those with relatively few shares available—can move much faster and more violently because there’s less supply. We cover float, short interest, and share structure in detail in our Float and Share Structure guide.
Volatility — How much and how fast a stock’s price moves. High volatility means big, fast price swings in either direction. Low volatility means the price is relatively calm and stable. Day traders generally want volatility because that’s where the opportunity lives—but it’s also where the danger lives. Think of volatility like ocean waves: bigger waves mean more potential for surfers, but also more risk of wiping out.
The Spread (Bid-Ask Spread) — This is the gap between two prices: the bid (the highest price a buyer is willing to pay) and the ask (the lowest price a seller is willing to accept). If the bid is $10.00 and the ask is $10.05, the spread is $0.05. Every time you enter a trade, the spread is an immediate cost. You buy at the ask and sell at the bid—so you start every trade slightly in the hole. For a deeper look at how spreads eat into your profits, check out our dedicated Bid-Ask Spread guide.
Liquidity — How easily you can buy or sell a stock without causing significant price movement. High liquidity means there are tons of buyers and sellers, so your orders get filled quickly at the price you expect. Low liquidity is the opposite—fewer participants, wider spreads, and the real risk that your order moves the price against you. We explore this critical concept further in our Liquidity and Volume guide.
Reading Charts: The Language of Price Action
Once you understand how markets work, the next vocabulary set you’ll encounter involves reading and interpreting price charts.
Candlestick — The most common way traders visualize price movement. Each “candle” on a chart represents a specific time period (one minute, five minutes, one day—you choose) and shows four pieces of information: where the price opened, the highest price reached, the lowest price reached, and where the price closed. Green (or white) candles mean the price went up during that period. Red (or black) candles mean it went down. Our Introduction to Candlestick Charts breaks down how to read these in detail.
Support — A price level where a stock tends to stop falling and bounce back up. Think of it like a floor. Buyers consistently step in at this price because they see it as a good deal, creating enough buying pressure to halt the decline. Support isn’t a guarantee—floors can break. But identifying support levels helps traders make more informed decisions about where to enter trades and set protective stop-losses. For the full picture, see our Support and Resistance guide.
Resistance — The opposite of support. Resistance is a price level where a stock tends to stop rising and pull back. Think of it as a ceiling. Sellers step in at this price, creating enough selling pressure to halt the advance. When a stock finally pushes through resistance, that’s often a significant event—which brings us to our next term.
Breakout — When a stock’s price moves above a resistance level (or below a support level) with conviction—usually on increased volume. Breakouts can signal the start of a strong price move in the direction of the break. But not all breakouts are real, which is why experienced traders watch for confirmation. A breakout above resistance on heavy volume is far more trustworthy than one on low volume.
Volume — The number of shares traded during a given period. Volume tells you how much participation is behind a price move. A stock jumping 5% on ten times its normal volume is telling you something very different than the same stock jumping 5% on half its normal volume. Volume is the fuel that powers price movement—without it, moves tend to fizzle.
Relative Volume (RVOL) — This compares a stock’s current trading volume to its average volume for the same time period. An RVOL of 3.0 means the stock is trading at three times its normal volume. High relative volume is one of the strongest signals that a stock is “in play”—meaning it’s attracting unusual attention and is more likely to make a big move. If you’ve used a stock scanner—like Trade Ideas, which our team uses daily—RVOL is one of the first filters you’ll set.
Gap / Gap Up / Gap Down — When a stock opens at a price significantly different from where it closed the previous day, that’s a “gap.” A gap up means the stock opened higher than yesterday’s close (usually due to good news or earnings). A gap down means it opened lower. Gaps are critical for day traders because they often signal fresh momentum and create trading opportunities right at the open.
VWAP (Volume Weighted Average Price) — Pronounced “vee-wap,” this is the average price a stock has traded at throughout the day, weighted by volume. It’s one of the most important indicators for day traders because institutional traders often use it as a benchmark. When a stock is trading above VWAP, buyers are generally in control. Below VWAP? Sellers have the upper hand. We’ve dedicated an entire article to VWAP Explained because it’s that important.
Trend — The general direction a stock’s price is moving over a given timeframe. An uptrend means higher highs and higher lows—like a staircase going up. A downtrend is lower highs and lower lows—a staircase going down. And sometimes the market moves sideways, which traders call a “range” or “consolidation.” Identifying the trend is one of the first skills you’ll develop—and one of the most valuable.
Placing Orders: The Words That Move Your Money
Knowing market mechanics and reading charts is important, but eventually you need to actually place trades. This is where order-related terminology becomes mission-critical—getting it wrong means buying when you meant to sell or paying more than you planned.
Market Order — An instruction to buy or sell a stock immediately at the best available price. Market orders prioritize speed over price. You’ll get filled fast, but in a fast-moving stock, the price you get might be different from the price you saw when you clicked the button. That difference has a name—slippage (coming up next). The SEC’s Office of Investor Education specifically notes that the last-traded price is not necessarily the price at which a market order will execute.
Limit Order — An instruction to buy or sell a stock only at a specific price or better. If you place a limit order to buy at $10.00, you won’t pay more than $10.00. The trade-off? Your order might not get filled at all if the price never reaches your limit. Limit orders give you price control at the cost of execution certainty.
Stop-Loss Order — A protective order that automatically sells your position if the price drops to a specified level, limiting your loss. If you buy a stock at $50 and set a stop-loss at $48, your position will automatically sell if the price hits $48—capping your loss at $2 per share. Stop-losses are the seatbelt of day trading. You always wear one. Our What is a Stop-Loss Order article covers the mechanics in detail.
Slippage — The difference between the price you expected to get and the price you actually received when your order was filled. Slippage happens most often with market orders during fast-moving conditions or in low-liquidity stocks. If you expected to buy at $25.00 but got filled at $25.08, that $0.08 per share is slippage. It sounds small, but it adds up—especially for active traders making dozens of trades per day.
Fill — When your order is actually executed and you’ve bought or sold shares, it’s been “filled.” A “partial fill” means only some of your shares were bought or sold. If you placed an order for 1,000 shares but only 600 executed, you got a partial fill of 600 shares.
Execution — The process of completing a trade. From the moment you click “buy” to when those shares land in your account, that’s execution. Execution speed and quality vary between brokers—it’s one of the reasons your choice of trading platform matters. We break down what to look for in our Day Trading Platforms guide.
For a comprehensive walkthrough of all order types—including stop-limit orders, bracket orders, and trailing stops—check out our Mastering Order Types guide.
Managing Risk: The Vocabulary That Keeps You Alive
This is the category that separates traders who survive from traders who blow up their accounts. Every term here connects directly to protecting your money.
Risk Management — The practice of controlling how much money you can lose on any given trade, in any given day, and across your account overall. Good risk management means no single bad trade—or even a string of bad trades—can knock you out of the game. Our team considers this the single most important skill in all of trading. For the full foundation, start with our Introduction to Risk Management.
Position Sizing — Calculating exactly how many shares to buy based on your account size, risk tolerance, and where you’ll place your stop-loss. This is the math that puts risk management into practice. If you have a $25,000 account and you’re risking 1% per trade, your maximum loss on any single trade is $250. Position sizing tells you how many shares to buy so that if you’re stopped out, you lose exactly that amount—no more. We cover the calculation step-by-step in our Position Sizing for Beginners guide.
Risk/Reward Ratio — A comparison of how much you’re willing to lose versus how much you expect to gain on a trade. If you risk $1 per share to potentially make $3, that’s a 1:3 risk/reward ratio. Why does this matter? Because even traders with a 40% win rate can be profitable if their winners are significantly larger than their losers. Our Risk/Reward Ratio guide explains this concept with real examples.
Drawdown — The decline in your account value from its peak to its lowest point during a losing period. If your account grew from $25,000 to $30,000 and then dropped back to $27,000, you experienced a $3,000 drawdown (or 10% from the peak). Drawdowns are normal and inevitable. What matters is keeping them manageable—which brings us back to risk management.
Pattern Day Trader (PDT) Rule — A FINRA regulation that defines a “pattern day trader” as anyone who executes four or more day trades within five business days in a margin account. Pattern day traders must maintain a minimum account equity of $25,000. This rule has a massive impact on beginners with smaller accounts. We dedicated an entire article to the PDT Rule Explained because the workarounds and implications deserve a thorough breakdown.
Margin — Money borrowed from your broker to trade with. A margin account allows you to trade with more buying power than you actually have in cash. For example, with 4:1 margin, a $25,000 account gives you $100,000 in buying power. Sounds great, right? The catch: margin amplifies losses just as much as gains. If you’re not careful, you can lose more than your initial deposit. Margin is a powerful tool that demands respect—and knowledge. For a deeper comparison, see our Margin vs. Cash Accounts guide.
Trader Slang: The Lingo You’ll Hear in Chat Rooms and Communities
Beyond formal terminology, day traders have developed their own colorful shorthand. You’ll hear these in chat rooms, on social media, and in trading communities like Investors Underground. Knowing them prevents confusion and helps you keep up with real-time commentary.
In Play — A stock that’s attracting significant attention, volume, and volatility on a given day. When a stock is “in play,” it means there’s enough participation and price movement to create trading opportunities. Not every stock is in play every day—usually only a handful qualify. Finding what’s in play each morning is the core job of pre-market preparation and stock scanning.
Bag Holder — A trader who is holding a losing position and refusing (or unable) to sell. The “bag” refers to the worthless or deeply losing shares they’re stuck with. Nobody wants to be a bag holder—it usually happens when a trader doesn’t use stop-losses or keeps averaging down into a losing trade, hoping for a reversal that never comes.
FOMO (Fear of Missing Out) — That urgent, almost panicky feeling you get when you see a stock running hard and you’re not in it. FOMO is one of the most destructive emotions in trading because it makes you chase entries at bad prices, abandon your trading plan, and take trades you’d normally skip. Our team has an entire article on FOMO in Trading because it’s that common.
Choppy — When a stock’s price bounces around erratically without establishing a clear direction. Choppy conditions are the enemy of trend-following traders because there’s no momentum to ride. The price goes up a little, then down a little, then up again—whipsawing traders in both directions. Many experienced traders simply step aside during choppy conditions. As we like to say: not trading is a trading decision.
Scalping — A trading style focused on capturing very small price movements—often just a few cents per share—but doing it many, many times per day. Scalpers hold positions for seconds to minutes. It requires fast execution, tight spreads, and intense focus. It’s not for everyone, and it’s definitely not where most beginners should start.
Catalyst — The specific reason a stock is moving. Catalysts include earnings reports, FDA approvals, breaking news, analyst upgrades or downgrades, partnership announcements, or anything else that changes the market’s view of a company. Strong catalysts create the volume and volatility that day traders need. Without a catalyst, most price movement is just noise.
Paper Trading — Practicing trades with simulated money instead of real cash. Paper trading lets you test strategies, learn your platform, and build confidence without risking a single dollar. Our team considers it non-negotiable for beginners—and we explain exactly why in our Why Paper Trading is Essential article.
Scanner — A software tool that filters through thousands of stocks in real time, surfacing only the ones that match your specific criteria (high volume, big gaps, price range, etc.). Scanners are how day traders find opportunities each morning. Without one, you’d be scanning through thousands of tickers manually—which is impossible during market hours. Our team’s primary scanner is Trade Ideas, which uses AI to surface setups that match your trading style. For more on how scanners work, read our Stock Scanners for Day Trading guide.
How to Actually Remember All This (Without Losing Your Mind)
Twenty-five terms can feel overwhelming when you see them all at once. Here’s the approach that worked for our team—and for thousands of traders before you.
Don’t try to memorize everything today. That’s the fastest way to forget everything by tomorrow. Instead, use this article as a reference guide. Bookmark it. Come back when you encounter a term you’ve forgotten.
Learn in context, not in isolation. The best way to lock these terms into your brain is to encounter them while doing something real. Open a paper trading account, pull up a chart, and start identifying support, resistance, volume, and candlestick patterns. The terms will stick because they’re connected to something you’re seeing.
Talk the talk. Seriously—say these terms out loud. When you’re watching a chart, narrate what you see: “The stock gapped up on earnings, it’s above VWAP, relative volume is high, and it’s approaching resistance.” It feels silly at first. It works.
Keep our Day Trading Dictionary bookmarked. It’s a searchable resource with 500+ terms. When you encounter a word we didn’t cover here—and you will—look it up. Trading vocabulary expands as your skills grow.
Focus on the terms relevant to YOUR current stage. If you’re still learning to read charts, don’t stress about order flow terminology. Master the basics, then layer in complexity. This is exactly how our 101-article Beginner’s Guide series is structured—each module builds on the last.
And one more thing—the Day Trading Toolkit page has our curated list of the tools, platforms, and resources our team actually uses. As you learn the language and start putting it into practice, you’ll want the right toolkit to support you.
Now that you’ve got the vocabulary foundation, the next step in your learning path is understanding what you can realistically expect to earn. Spoiler: the numbers are probably different from what you’ve seen on social media. Head to our Realistic Day Trading Income Guide for an honest breakdown of what traders actually make—and what it takes to get there.
Frequently Asked Questions
What is the most important day trading term a beginner should learn first?
Quick Answer: “Risk management” and its related terms (stop-loss, position sizing) are the most critical because they directly protect your capital from day one.
While every term in this guide matters, our team firmly believes that understanding risk-related vocabulary should come before everything else. You can make money without knowing what “VWAP” means. You cannot survive without understanding stop-losses and position sizing. The traders who blow up their accounts almost always share one thing in common: they didn’t manage risk properly. Start with the “Managing Risk” section above, then explore our full Introduction to Risk Management.
Key Takeaway: Learn the language of risk before the language of opportunity—your account will thank you.
What’s the difference between “long” and “short” in day trading?
Quick Answer: Going long means buying a stock expecting the price to rise. Going short means selling borrowed shares expecting the price to fall.
The confusion is understandable because “short” involves selling something you don’t own—which sounds bizarre at first. Here’s a simplified example: you borrow 100 shares of XYZ at $50 from your broker and immediately sell them, collecting $5,000. If the price drops to $45, you buy 100 shares back for $4,500 and return them. Your profit is $500. But if the price rises to $55, you’d need to spend $5,500 to buy those shares back—a $500 loss. Short selling has theoretically unlimited risk since there’s no cap on how high a stock can go.
Key Takeaway: Most beginners should focus on going long (buying) before attempting short selling, which carries additional risk and complexity.
What does “the stock is in play” mean?
Quick Answer: A stock that’s “in play” has unusually high volume, volatility, and trader attention—making it a strong candidate for day trading that session.
On any given day, out of thousands of publicly traded stocks, only a handful are truly “in play.” These are stocks experiencing a catalyst—earnings, news, an FDA decision—that’s driving participation far above normal levels. Relative volume (RVOL) is the easiest way to identify in-play stocks. An RVOL of 2.0+ combined with a clear catalyst is our team’s minimum threshold. Stock scanners like Trade Ideas are specifically designed to surface these stocks before the market opens.
Key Takeaway: Don’t try to day trade random stocks—focus only on what’s in play each day.
How many day trading terms do I need to know before I start trading?
Quick Answer: You should be comfortable with about 25-30 core terms—roughly the ones covered in this article—before you start paper trading.
You don’t need an encyclopedia of trading jargon before placing your first simulated trade. What you need is a working understanding of market basics (long, short, spread), chart reading fundamentals (support, resistance, volume), order types (market, limit, stop-loss), and core risk terms (position sizing, drawdown). As you progress through paper trading and eventually live trading, your vocabulary will naturally expand. Keep our Day Trading Dictionary bookmarked as an ongoing reference.
Key Takeaway: Master the 25-30 essentials first, then expand your vocabulary as your skills grow.
What is VWAP and why do day traders talk about it so much?
Quick Answer: VWAP (Volume Weighted Average Price) is the average price a stock has traded at all day, weighted by volume—and it acts as a key reference point for institutional traders.
VWAP matters because large institutional traders—the ones moving millions of shares—often use it as a benchmark. They try to buy below VWAP and sell above it. Because of this, VWAP frequently acts as dynamic support or resistance throughout the day. When a stock crosses above VWAP, it often signals a shift in buyer momentum. Below VWAP, sellers tend to dominate. For day traders, VWAP is one of the first indicators to add to your chart.
Key Takeaway: VWAP is a critical day trading indicator—learn it early. Our VWAP Explained guide covers it thoroughly.
What’s the difference between a market order and a limit order?
Quick Answer: A market order executes immediately at the best available price. A limit order only executes at your specified price or better.
Market orders guarantee execution but not price—you might get filled at a worse price than expected during fast markets (that’s slippage). Limit orders guarantee price but not execution—if the stock never reaches your limit price, the trade doesn’t happen. For beginners, understanding this trade-off is essential. Our team typically uses limit orders for entries and market orders only when exiting an emergency situation where speed matters more than price. For the complete breakdown, see our Order Types guide.
Key Takeaway: Use limit orders when you have time and want price precision; use market orders when you need out of a trade now.
What does “float” mean and why should I care?
Quick Answer: Float is the number of shares available for the public to trade. Low-float stocks move faster and more dramatically because there’s less supply.
Imagine two stocks that both receive a sudden wave of buying interest. Stock A has a float of 500 million shares—there’s plenty of supply to absorb the demand, so the price moves gradually. Stock B has a float of 5 million shares—that same buying interest overwhelms the limited supply, and the price rockets upward. This is why day traders obsess over float. Low-float stocks offer explosive moves but also extreme volatility. High-float stocks are more stable but move slower.
Key Takeaway: Float directly impacts how dramatically a stock can move—learn to check it before every trade.
Is day trading lingo the same across all markets (stocks, forex, futures, crypto)?
Quick Answer: About 70% of core terminology overlaps, but each market has unique terms you’ll need to learn separately.
Concepts like long, short, support, resistance, stop-loss, and risk management apply universally. But forex has pips, lots, and currency pairs. Futures have contracts, ticks, and expiration dates. Crypto has wallets, gas fees, and DeFi terminology. If you’re starting with stocks—which we recommend for most beginners—the terms in this article will serve you well. Our Day Trading Markets guide compares the different markets and their unique vocabulary.
Key Takeaway: Start with stock trading terminology (this article), then branch into market-specific lingo as needed.
What does “the spread” cost me on every trade?
Quick Answer: The bid-ask spread is an invisible cost on every trade—you buy at the higher ask price and sell at the lower bid price, so you start each trade at a small loss.
Here’s the math: if a stock has a bid of $25.00 and an ask of $25.05, you buy at $25.05. The moment you own those shares, they’re worth $25.00 (the bid). You’re already down $0.05 per share before the stock moves. On 1,000 shares, that’s $50 gone instantly. Tightly traded, high-liquidity stocks tend to have narrow spreads ($0.01-$0.02), while low-liquidity stocks can have spreads of $0.10 or more. This is one reason day traders focus on liquid stocks.
Key Takeaway: Always check the spread before trading—wider spreads mean higher hidden costs that eat into your profits.
Where can I practice using these terms without risking real money?
Quick Answer: Paper trading (simulated trading) lets you practice everything from reading charts to placing orders with zero financial risk.
Most major brokers offer paper trading accounts that mirror real market conditions. You’ll use the same platform, place the same order types, and watch the same charts—the only difference is the money isn’t real. Our team recommends spending a minimum of two to three months paper trading before going live. This gives you enough time to not only learn the terminology but actually use it in context, which is how you retain it. Our Paper Trading guide walks you through setup and best practices.
Key Takeaway: Paper trading is the risk-free proving ground for your new vocabulary—use it generously before risking real capital.
Disclaimer
The information provided in this article is for educational purposes only and should not be considered financial advice. Day trading involves substantial risk and is not suitable for every investor. Past performance is not indicative of future results.
For our complete disclaimer, please visit: https://daytradingtoolkit.com/disclaimer/
Article Sources
Building a strong understanding of day trading terminology starts with credible, authoritative sources. Our team cross-referenced the following resources while developing the definitions and context in this guide.
- SEC Office of Investor Education — Trading Basics — The SEC’s official guide to fundamental trading concepts and order types.
- SEC Investor Bulletin — Understanding Order Types — Detailed explanations of market, limit, stop, and conditional order types from the SEC.
- FINRA — Day Trading Rules — FINRA’s official rules and guidance on pattern day trader requirements and margin rules.
- Investor.gov — SEC Glossary of Investing Terms — The SEC’s complete, searchable glossary of financial terminology.
- Investopedia — Day Trading — Comprehensive educational definitions for day trading concepts and strategies.
- Charles Schwab — Stock Market Terminology: 200+ Definitions — A broad glossary from a major brokerage covering core market and trading vocabulary.
