Introductory Context
"Long vega: all options buying positions benefit from rising IV and suffer from falling IV. Short vega: all options selling positions benefit from falling IV and suffer from rising IV. Matching vega direction to VIX outlook is as important as matching delta to directional outlook. Spreads offer intermediate vega profiles between pure long and pure short volatility."
Long Vega Positions — Betting on Rising Fear
Long vega positions include: long calls, long puts, long straddles, long strangles, any net options-buying strategy. Characteristics:
Benefit from rising IV (rising India VIX) — value increases even without underlying movement
Suffer from falling IV (IV crush after events) — value decreases even with correct directional move
Best entered when: VIX is historically low (IVR below 25), IV is below or near HV, a catalyst approaching that will drive IV higher
Exit signal: when the VIX expansion thesis has played out (IV reaches expected peak level), or when the event resolves and IV crush begins
Long vega positions are not just directional bets — they are bets that the market will become more uncertain. When VIX is already elevated (above 20) and you buy options, you are buying volatility that may be about to normalise downward. The directional thesis may be correct but vega drag can undermine profitability.
Short Vega Positions — Betting on Calming Fear
Short vega positions include: short calls (naked or covered), short puts, short straddles, iron condors, any net options-selling strategy. Characteristics:
Benefit from falling IV (post-event IV crush, VIX normalisation from elevated levels)
Suffer from rising IV (unexpected events, global risk-off, VIX spikes)
Best entered when: VIX is historically elevated (IVR above 65), IV significantly above HV, no imminent catalyst expected
Exit signal: when IV has compressed to normal levels (most of the vega income captured), or when a new catalyst causes unexpected VIX spike
Short Vega and VIX Spikes
Short vega positions suffer when VIX rises unexpectedly. A short straddle with net vega −₹15/unit suffers ₹75/unit loss if VIX spikes 5 points overnight from a global shock. On 5 lots: ₹75 × 75 × 5 = ₹28,125 vega loss from a single overnight VIX spike — before any directional delta impact. Short vega positions require careful sizing and defined-risk structures to prevent VIX spike losses from being catastrophic.
Intermediate Vega Profiles — Spreads
Spread structures create intermediate vega profiles between pure long and pure short vega:
Bull Call Spread (long ATM call, short OTM call): net positive vega, but lower than naked long call. IV expansion helps but less than naked; IV crush hurts but less.
Bear Put Spread (long ATM put, short OTM put): same — net positive vega, moderate exposure.
Iron Condor (short OTM call + short OTM put + long further OTM call + put): net negative vega. Benefits from IV compression. Defined maximum loss from the long wings.
Calendar Spread (long far-month, short near-month at same strike): positive vega — longer-dated leg has more vega than shorter-dated leg. Benefits from IV rises.
Choosing the appropriate vega profile is a separate decision from choosing the directional delta profile. They should both be made explicitly and matched to the current market environment.
Long vega and short vega are two distinct businesses within options trading. Long vega: you are in the insurance-buying business, paying premium for protection that becomes more valuable when uncertainty rises. Short vega: you are in the insurance-selling business, collecting premium from others' desire for protection, betting that the feared events will not materialise or will be less severe than feared. Match your business to the current environment