Long Strangle

Choose a strangle when: (1) You expect a very large move (5%+), (2) You want to reduce capital at risk, (3) IV is somewhat elevated and you want to pay less, or (4) You have a slightly uncertain directional view. Choose a straddle when you expect moderate moves (3-5%) and want higher probability of profit.

Use delta as your guide. A 25-delta strangle means buying a call with 0.25 delta (about 4% OTM) and a put with -0.25 delta (about 4% OTM). More aggressive (30+ delta) = tighter strikes, higher cost. More conservative (20- delta) = wider strikes, lower cost. Match your strike selection to the magnitude of move you expect.

If the stock moves but stays between your strikes, both options expire worthless or are worth very little. You lose most or all of your premium. This is the most common outcome for strangles - they have a low win rate. The strategy relies on occasional large moves to be profitable overall.

No. With a long strangle, your maximum loss is limited to the total premium paid for both options. This makes it a defined-risk strategy. However, you can lose 100% of that premium if the underlying doesn't move enough.

For event plays, hold until shortly after the event - then exit to avoid IV crush. For non-event strangles, exit at 21 DTE if no significant move has occurred. If you're profitable, consider taking profits at 50% gain rather than waiting for the maximum.

When price moves significantly toward one strike, the profitable leg gains value while the other approaches zero. Common approaches: (1) Close entire position - cleanest, locks in profit. (2) Leg out - sell profitable leg, keep losing leg as cheap hedge in case of reversal. (3) Roll profitable leg - take profits and reset to new strike if expecting continued move.

Equal deltas create a neutral position. However, you can skew based on directional bias: slightly higher delta on the side you expect to move creates more profit potential there. Be aware this increases cost and creates directional exposure. Most traders start with equal deltas and only skew when they have strong conviction.

OTM options (strangles) have less vega than ATM options (straddles), so IV crush hurts strangles proportionally less in absolute terms. However, because strangles are cheaper, the percentage loss from IV crush can be similar or even worse. A 20% IV crush on a S$250 strangle might cost S$40-60, which is 16-24% of your position.

Roll when: (1) Your thesis is still valid but needs more time, (2) The position is down due to time decay but price action remains favorable, (3) A new catalyst is emerging that you want to capture. Don't roll when: thesis is invalidated, the underlying has trended making one leg very expensive to roll, or you're just hoping to recover losses.

Rough rule: vega × IV increase = profit. If your strangle has 10 vega and you need 50 points profit to reach your 50% target, you need IV to rise about 5 points. If IV rank is currently 20% and typically rises to 40% before events, that's a 20-point rise - more than enough. Always check historical IV patterns for similar events.

Analyze skew and term structure. In steep put skew (puts expensive), consider tighter put delta or buy call-heavy strangle. In flat skew, standard symmetric strangle works. For term structure: if front month is in backwardation (elevated), short-dated strangles offer relatively better value. Use vol surface analysis tools to identify where options are relatively cheap.

Use Kelly criterion modified for low win-rate strategies. With 30% win rate and 3:1 average win/loss ratio: Kelly = (0.30 × 3 - 0.70) / 3 = 0.067 or 6.7% of capital per trade. Most traders use half-Kelly (3.3%) to reduce volatility. Also ensure no single strangle exceeds 5% of capital and total strangle exposure doesn't exceed 15-20%.

Options: (1) VIX calls - provide positive vega that rises when all vol rises. (2) Diversify across uncorrelated underlyings (hard in Singapore where stocks are correlated). (3) Stagger entries - don't put all strangles on at once; spread entries over time. (4) Maintain cash - keep 50%+ in cash to fund margin expansion and average into cheaper strangles if IV drops.

Convert when: (1) IV spikes but you want to lock in vega gains - sell wings to convert to short vega. (2) Price has moved toward one strike and you want to define risk on that side. (3) You want to reduce capital at risk by collecting premium on short strikes. The conversion locks in some IV profit while maintaining position for further movement. Cost is reduced profit potential.

Vega profits come from IV expansion (before events). Gamma profits come from price movement (delta becomes positive or negative). For event trades, both matter but differently timed: vega profits accrue leading up to event; gamma profits (or losses) occur during/after event. Consider: take vega profits before event (sell half), hold for gamma through event (hold half). This balances the two profit sources.