Back to All Articles
Options Trading July 30, 2026 6 min read

Options Greeks Explained: Delta, Gamma, Theta and Vega

A plain-language walkthrough of the four Greeks every options trader needs to understand before buying or selling a contract.

V

Vikram Malhotra

BULLRISE EDUENGI PVT. LTD. Dehradun

Options Greeks Explained: Delta, Gamma, Theta and Vega

Options pricing looks intimidating until you separate it into the four Greeks that actually drive it. Each one answers a different question about how the option's price will react as conditions change.

Delta and Gamma

Delta tells you how much an option's price moves for every ₹1 move in the underlying. Gamma tells you how fast that Delta itself is changing — important near expiry, when Delta can shift rapidly for at-the-money options.

Theta and Vega

Theta measures time decay: how much value an option loses each day, all else equal. It's the reason option buyers are fighting a clock and option sellers often have time working in their favour. Vega measures sensitivity to implied volatility — a spike in expected volatility (ahead of earnings or an RBI policy announcement, for example) can move an option's price even if the underlying hasn't moved at all.

Our Options Buying & Selling course builds live option-chain exercises around each Greek, so the concepts move from formulas to something you can actually read on a broker's terminal.

Master Financial Markets & Tech Skills in Dehradun

BULLRISE EDUENGI PVT. LTD. offers live market trading labs and hands-on IT courses at Chandel Tower, Doon University Road, Mothrowala.