Trading Dictionary

139+ Trading Terms Explained

Plain-English definitions for active traders - from order types and chart patterns to options Greeks and trader slang.

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BACK TO BUSINESS SALE, THROUGH SUNDAY

42% Off TrendSpider, Plus 2 Months of Sidekick Free

Through Sunday, discounted pricing applies to your first 12 months on any plan, and every referred customer gets a free 2-month Sidekick Basic upgrade worth $98, no code required. Sidekick now runs on Claude Opus 5 for chart analysis, backtest review, and custom-indicator work.

Shop the Sale

Annual plans

Up to 42% off

The deepest discount, applied to your full first year.

Quarterly plans

25% off

Locked in for your first 12 months.

Monthly plans

25% off

Same 25% and the free Sidekick upgrade, paid month to month.

Free 2-Month Sidekick Basic ($98 value) Every referred customer gets it automatically, no code needed.

Sale runs Aug 20-23, 2026, TrendSpider's dates and terms. "Up to" discounts vary by plan and term. Affiliate link, see our disclosure.