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Expiry day trading involves high theta decay but gamma plays a crucial role in risk and reward. Gamma explosion can rapidly change option premiums making trades highly volatile. With QuantMan backtesting and InstaOptions analytics traders can identify opportunities and manage risks effectively.

Expiry day trading refers to strategies executed on the day an option contract expires. Sellers often gain from rapid theta decay while buyers face the challenge of time value loss. This blog explains how expiry day trading works its impact on volatility and why risk management is essential.