Drawdown Protector

Your limit should be ABOVE your strategy's expected/historical drawdown (to avoid stopping out during normal operation) but BELOW what would be catastrophic for you. If your strategy historically has a 15% max drawdown, you might set your halt at 25-30%. This gives room for worse-than-historical performance while still protecting against catastrophe. Also consider your emotional tolerance - the limit should be something you can actually stick to.

This is called whipsaw and is a real cost of drawdown protection. You'll miss some recovery. However, this is the price of insurance. The alternative - not having protection and experiencing a 50%+ drawdown - is far worse than occasionally missing a recovery. Over time, avoiding large drawdowns more than compensates for occasional whipsaws. Accept this cost as part of capital preservation.

Both matter but serve different purposes. Drawdown from peak (high-water mark) is standard and captures rolling risk. Drawdown from starting capital tells you if you've lost your original money. Many traders track both: 'I'm 8% from peak but still 12% above starting capital.' If you're below starting capital, that's more serious. Consider having both types of limits.

Pre-commit to your limits before drawdowns happen - decisions made during stress are often poor. Remind yourself of the recovery math: limiting drawdowns protects your future. Take the required actions mechanically without second-guessing. If you hit halt level, use the cooling period productively for review, not for regret. Focus on what you can control (following your system) not what you can't (market direction).

Broker force-closure of leveraged intraday positions, contra squaring, and margin calls are last-resort protections that happen too late and at the worst prices. By the time the broker liquidates, you've already suffered a significant loss. Drawdown protection triggers earlier, on YOUR terms, at better prices, with proper planning. Broker actions are an emergency backstop, not your primary protection.

Base limits on each strategy's characteristics: expected max drawdown, volatility, recovery patterns. A momentum strategy might have a 20% limit (momentum strategies have larger drawdowns by nature). A mean-reversion strategy might have a 12% limit (it should recover faster). Track each strategy separately, halt only the breaching strategy while others continue. Also have a portfolio-level limit as the final backstop across all strategies.

It depends on your situation. Puts provide insurance while maintaining positions (good if you have conviction and want upside participation), but puts cost premium (an explicit cost), and in Singapore single-stock options are thin so you'd typically use index or overseas options. Position reduction is 'free' but you lose upside participation. Consider: high conviction in positions + ability to afford premium - puts. Lower conviction or need for cash - position reduction. Often a combination works well: reduce some positions AND add index puts on the remainder.

In Singapore this is refreshingly simple: there is no capital gains tax, so selling to de-risk during a drawdown generally creates no tax liability, regardless of how large the gain or how short the holding period. That means tax should essentially never delay protective action - paying no tax on a controlled exit is strictly better than refusing to sell and suffering a larger loss. There is no tax-loss harvesting benefit to chase either, since there are no capital gains to offset. The only caveats: extremely frequent, systematic trading could be assessed by IRAS as a trade (taxing profits as income), and any foreign holdings may have their own tax rules - but neither should stop you cutting risk. Don't let a (here, tiny) tax tail wag the risk-management dog.

Options: (1) Reset the HWM - new capital becomes part of the peak. Simple but might artificially lower the drawdown %. (2) Weighted HWM - adjust the peak by the capital-weighted contribution. More accurate but complex. (3) Separate tracking - track original-capital drawdown separately from new capital. Most sophisticated. For simplicity, many traders reset the HWM when adding significant capital (>10% of portfolio), accepting that this 'forgives' some drawdown.

Stop losses are position-level protection; drawdown limits are portfolio-level. Both are needed. Stop losses prevent single positions from excessive damage but don't protect against correlated losses across positions. Drawdown limits catch portfolio-wide damage even if no single stop is hit. Think of stops as the first line of defense, drawdown limits as the second. A portfolio can hit its drawdown limit while all individual stops are intact if many positions move against you moderately.

The CPPI multiplier depends on floor importance and market characteristics. A higher multiplier (5-6x) provides more upside participation but less protection - good for aggressive investors or stable markets. A lower multiplier (2-3x) provides stronger protection with less upside - good for conservative investors or volatile markets. Empirically, 3-4x works well for moderate risk tolerance. Backtest different multipliers on historical data including crisis periods to see the max-drawdown and return tradeoff.

Distinguishing features: Normal drawdown - consistent with historical volatility, market conditions explain the losses, the strategy logic remains sound. Strategy breakdown - drawdown exceeds historical norms, losses don't correspond to the market, the edge appears to have disappeared. Analysis: compare the current drawdown to Monte Carlo simulations of the strategy. If the current DD is beyond 95% of simulated paths, something may be broken. Also check: has the market regime changed? Are correlations different? Is execution quality degraded? Genuine breakdown requires a strategy review, not just waiting for recovery.

Gap risk is significant - the market can open well below your trigger levels, and Singapore's security-level circuit breaker (a 5-minute cooling-off on ±10% moves) pauses but doesn't prevent large moves. Mitigation: use overnight gap scenarios in stress testing. For gap-prone instruments, include option-based protection (puts protect against gaps). Adjust limits for gap risk - if you allow a 20% drawdown but a 10% overnight gap is possible, you might see 25%+ before you can act. Consider market-on-open orders ready to trigger if the opening price is below threshold. Accept that some gap risk cannot be eliminated - size positions accordingly.

Key parameters to optimize: threshold levels (tighter = more protection, more drag), reduction amounts (partial vs full), recovery rules (faster resumption = more participation). Backtesting approach: run the strategy with various parameter combinations through historical data including crises. Measure: return drag, max-drawdown reduction, Sharpe improvement, Calmar improvement. Select parameters that maximize risk-adjusted return (not raw return). Generally, moderate protection (15-20% halt) optimizes better than extremely tight (10%) or loose (30%) limits.

Leverage amplifies drawdowns and requires tighter limits. If using 2x leverage, a 10% market move causes a 20% portfolio move. Rules of thumb: reduce drawdown limits proportionally to leverage (2x leverage - half the limits). Consider leverage as part of the risk budget, not separate. Deleverage before hitting drawdown limits (reduce leverage at warning level, not just at halt). Margin calls can force liquidation at the worst prices - maintain a buffer. Some traders use dynamic leverage: reduce leverage as drawdown increases (similar to the CPPI concept).