Basics

Call Option

By Ryan Silk & Lawrence Polatchek · Reviewed April 2026 · Options Trading Glossary

Right to buy shares at strike price

What is Call Option?

Call Option A contract giving the holder the right to buy 100 shares of the underlying at the strike price before expiration. Call buyers are bullish; call sellers are neutral to bearish.

Complete Definition

A contract giving the holder the right to buy 100 shares of the underlying at the strike price before expiration. Call buyers are bullish; call sellers are neutral to bearish.

Example

Buy AAPL $150 call for $5. If AAPL rises to $160, your call is worth at least $10 (intrinsic value).

Related Terms

Put Option Strike Price Premium

Written by

ApexVol Research Team

Quantitative options research

All calculations use live ORATS institutional data — the same source used by professional volatility desks.

Technical reviewer

Ryan Silk, ApexVol Founder

Reviewed for technical accuracy

10+ years trading options. Built ApexVol's pricing engine, Greeks model, and IV-rank methodology.

This guide is updated as market conditions and ORATS data change. Last revised 2026-05-12. How we research →

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