A long straddle buys an ATM call and an ATM put. It profits if Nifty moves far enough either way to cover both premiums plus the move. It is a long-volatility bet: you want a big move and/or rising IV. The trap is Vega decay — if IV collapses after entry (IV crush), both legs lose even if the index moves.
Enter only when IV rank is low (cheap options) and the model expects a breakout (oi_buildup + vix_z turning up). Avoid after IV has already spiked (you buy expensive, then crash). The filter checks iv_rv_spread before entry. Size by total premium, not by strike.
Q: What is a long straddle?
A: Buy ATM call and put; profits on a large move either direction.
Q: Why does IV matter?
A: You need a move AND/or rising IV; IV crush after entry can kill it.
Q: When to enter?
A: Low IV rank (cheap) plus a breakout signal from OI and VIX.
Q: What is the max loss?
A: Total premium paid if the index stays at the strike at expiry.
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By Shakti Tiwari · Options AI research pillar. NISM XII certified. Educational only, not investment advice; verify before acting.