Strongly Bullish with Unlimited Upside Potential
| Strategy Type | Debit or Credit Spread (Volatility Play) |
| Market Outlook | Strongly Bullish with Unlimited Upside Potential |
| Risk Profile | Limited (maximum loss between strikes) |
| Reward Profile | Unlimited on upside, Limited profit on downside (if credit entry) |
| Time Horizon | 45-60 DTE recommended for time to move |
| Iv Environment | Low IV preferred (buying more options than selling) |
| Breakeven | Complex - depends on credit/debit entry; two potential breakevens |
| Primary Instruments | STI Index Options, DBS Options, OCBC Options, UOB Options |
| Mas Compliance | MAS regulated; retail trading permitted with licensed broker; defined risk strategy |
| Contract Size | S$5 per point for STI; 1,000 shares for equities; 100 shares for ETFs |
| Trading Hours | 9:00 AM - 5:00 PM SGT (Pre-Open 8:30 AM - 9:00 AM) |
| Expiry Options | Monthly expiries; limited weekly options |
| Settlement | T+2 for shares; T+1 for SGX derivatives |
| Tax Treatment | No capital gains tax for individuals in Singapore |
| Stamp Duty | 0.2% on share purchases (buyer and seller each); options exempt |
| Cdp Account | Central Depository (CDP) account required for share ownership; not needed for options |
They're opposites. A ratio call spread sells 2 calls and buys 1 (limited profit, unlimited risk). A call backspread buys 2 calls and sells 1 (unlimited profit, limited risk). Ratio spreads are for collecting premium with a price ceiling thesis. Backspreads are for capturing large moves with defined risk.
If price stays between your strikes (especially at the long strike), you'll lose money - potentially your maximum loss. Backspreads need big moves. Small moves or stagnation is the worst outcome. This is why catalyst identification is crucial.
Credit entry provides a 'safety net.' If you're wrong and price goes down, you still keep the credit. It reduces your overall risk profile. If bullish thesis is correct and price rallies big, you profit from the move. Credit entry means you profit in 2 of 3 scenarios (big rally or decline), only losing if price stagnates at long strike.
Call backspreads have defined risk, so margin is typically the max loss amount. Since you're long more options than short, and the long calls cover the short call above the long strike, the position is fully hedged. It's much simpler margin-wise than ratio spreads.
No. The max loss is truly the maximum because your 2 long calls will always offset your 1 short call above the long strike. As price rises, your long calls gain value faster than your short call loses. The position is designed with defined risk.
Consider this when: (1) You've achieved good profit and want to lock some in, (2) Momentum is slowing, (3) IV is crushing and you want to reduce vega exposure, (4) You're approaching expiration and want to reduce gamma risk. Selling one long call converts unlimited potential to defined profit but removes downside risk.
At 21 DTE: If profitable, consider closing or converting. If at max loss zone, evaluate whether to close for salvage value or hold for possible last-minute rally. At 7 DTE: Close unless positioned well above long strike. Theta accelerates dramatically and being at max loss zone with a week left is very difficult to recover from.
Roll if: Your bullish thesis is still valid but you need more time, and you can roll for minimal additional cost. Don't roll if: Thesis is broken (catalyst passed without expected move), or rolling significantly increases your max loss. Sometimes accepting the loss is better than extending a failing position.
You're net long vega, so IV increase helps and IV decrease hurts. Ideally, enter when IV is low and capture IV expansion leading into your catalyst. After the event, IV typically crushes - if you've made money on the move, consider closing quickly to avoid giving back gains to vega.
Match spread width to expected move. If expecting 3-5% move, narrower spreads (50-100 points) may work. If expecting 7-10%+ move, wider spreads (100-200 points) provide more leverage on the big move. Wider spreads have higher max loss but dramatically higher profit potential when right.
In contango (back months higher IV), front month may be better - your short call IV is relatively higher, improving credit/reducing debit. In backwardation (front months higher), back months are better - your long calls are cheaper relative to front. Also consider event placement - if catalyst is near, front month captures it; if catalyst is far, back month gives more time.
Backspreads are inherently long gamma and long vega. The ideal is entering when vega is cheap (low IV) so you benefit from expansion, and then the gamma kicks in when the price moves. Avoid entering when IV is already elevated - you're paying for vega you may not benefit from, and IV crush after your catalyst can devastate the position.
Compare implied move (from straddle pricing) vs your expected move. If straddle implies 5% move but you expect 8%, there's edge in backspreads because you're positioning for a larger move than priced in. Also consider entry cost - if you can enter for credit and only lose in a small window, the probability-weighted expectancy may be positive even with low win rate.
1x3 provides more leverage on large moves but typically costs more (less credit or more debit) and has larger max loss. Use 1x3 when: extremely bullish, expecting very large move (10%+), willing to accept higher max loss for more upside. Stick with 1x2 for most situations - it provides good leverage with manageable risk.
Backspreads work systematically when you have a process for identifying large move setups - earnings surprises, technical breakouts, or macro catalysts. Accept that win rate will be low (30-40%) but winners must be 3-5x losers. Position size conservatively (2-3% risk per trade) and focus on catalyst quality over quantity. Track expected vs actual move to refine your edge identification.
Full guided lessons, quizzes, and a complete strategy library for the Singapore market. One-time purchase. No subscription, ever.
Get Singapore access →