Index Iron Condor

Volatility Strategies Intermediate Singapore STI

Neutral on Broad Market

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Quick Reference

Strategy Type Iron Condor on Index Options
Market Outlook Neutral on Broad Market
Risk Profile Defined Risk - Cash Settled
Reward Profile Credit from Time Decay on Index Range
Time Horizon 30-45 Days Typical
Iv Environment Moderate to High IV Preferred
Breakeven Short Strikes ± Net Credit

Payoff Profile

An index iron condor has the same payoff shape as equity IC - flat profit zone between short strikes with defined max loss beyond wings. Cash settlement simplifies expiration. • Net credit × S$5 multiplier • (Wing width - Credit) × S$5 multiplier • Short call + Credit • Short put - Credit • Between breakeven points

Singapore Market Details

Primary Instrument STI Index Options (Straits Times Index)
Mas Compliance MAS regulated; SGX traded
Contract Specifications S$5 per index point • 0.1 index points (S$0.50) • 10 or 25 points typically • CASH SETTLED - No stock delivery • 2nd last business day of month • 8:30 AM - 5:15 PM SGT • Based on opening prices on expiration
Sti Characteristics Approximately 3,000-3,500 points • 0.5-1.5% (15-50 points) • 30 largest SGX-listed companies • Heavy financial sector weighting
Tax Treatment No capital gains tax for individuals in Singapore
Liquidity Note STI options less liquid than US index options; wider spreads

Frequently Asked Questions

Why trade STI index options instead of individual stocks?

Index options offer built-in diversification (30 stocks), cash settlement (no assignment), and exposure to the broad market. They're ideal if you have a view on the overall Singapore market rather than a specific company.

What does 'cash settled' mean for my iron condor?

Cash settlement means no stocks change hands at expiration. If options are ITM, you receive (or pay) the cash difference between strike and settlement price. This eliminates the complexity of managing stock positions from assignment.

How do I calculate profit in SGD for an STI IC?

Multiply points by S$5 (the multiplier). If you collect 15 points credit, that's 15 × S$5 = S$75 per contract. If your max loss is 35 points, that's 35 × S$5 = S$175 per contract.

Are STI options liquid enough to trade?

STI options are less liquid than US index options but tradeable for retail sizes. Expect 2-5 point bid-ask spreads. Use limit orders, prefer round number strikes, and be patient. For larger positions, liquidity may be a constraint.

Can I be assigned early on an STI IC?

No. STI options are European style, meaning exercise is only possible at expiration. There is no early assignment risk, unlike American-style equity options.

How does STI composition affect my IC?

The STI is heavily weighted toward financial stocks (banks ~40%). When banks move together, the STI follows. A banking sector event (like MAS policy) can significantly move the index even if other sectors are stable.

Should I adjust strikes for index skew?

Index put skew means puts are relatively expensive. You may favor slightly asymmetric ICs (larger put spreads) to capture this premium. However, this also means more downside risk, so balance accordingly.

How do I handle an event like MAS monetary policy announcement?

Close or reduce position before major events, widen strikes if holding through, or simply avoid having ICs over event dates. Post-event, wait for volatility to settle before entering new positions.

What's the advantage of index ICs for portfolio management?

Index ICs provide broad market exposure in a single trade. They can serve as income generators or partial hedges for equity portfolios. Managing one index position is simpler than multiple equity positions.

How does settlement work if I hold to expiration?

On expiration day, the settlement value is calculated from component stocks' opening prices. Your position is marked against this value. ITM options are automatically exercised (cash settlement). OTM options expire worthless.

How do I exploit term structure in STI options?

In contango (normal), back month IV is higher. When rolling, you sell richer back month options. In backwardation, front month is richer - may favor not rolling or rolling earlier. Analyze term structure before roll decisions.

Can I use STI ICs for correlation trades?

Yes. Pair index ICs with stock-specific positions. Example: Long undervalued Singapore stock + Short STI IC. The IC profits if the market is flat while your stock outperforms. This captures alpha while hedging beta.

How should I adjust my systematic approach across market regimes?

Define regime rules: In sideways markets, use standard approach. In trending markets, skip or reduce size. In high-vol regimes, widen wings. Back-test these rules against historical STI data to validate.

What are the settlement timing risks for index ICs?

Settlement is based on opening prices, which can gap from previous close. Overnight global events can significantly move the settlement value. Consider closing 1-2 days before expiration to avoid this uncertainty, unless position is clearly OTM.

How do I integrate index ICs into a broader options portfolio?

Allocate 15-30% of options capital to index ICs as a core income strategy. Complement with equity ICs (stock-specific views), directional trades (when conviction exists), and hedges (during uncertainty). Rebalance based on performance and market conditions.

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