Equity

Trendline

Definition

A straight line drawn on a price chart connecting a series of price highs (resistance trendline) or lows (support trendline) to identify and visualize the direction and strength of a trend.

Example
An upward trendline connecting successive higher lows acts as dynamic support — a break below signals a potential trend reversal.
Frequently Asked Question
What is a Trendline?
A trendline connects price highs (resistance) or lows (support) on a chart to define trend direction. Traders buy pullbacks to support trendlines in uptrends and sell bounces to resistance in downtrends.
APA Citation
Clark, R. (2025). Trendline. VixShield Trading Glossary. Retrieved from https://www.vixshield.com/glossary/trendline
RC
Russell Clark, FNP-C
Author of SPX Mastery series · Founder of VixShield
Last updated:  ·  Source: VixShield Trading Glossary — From SPX Mastery by Russell Clark
⚠️ Not financial advice. This definition is educational content from the SPX Mastery book series by Russell Clark (VixShield). Past performance is not indicative of future results. Trading options involves substantial risk of loss and is not appropriate for all investors. Always paper trade before risking real capital.