UK Index Arbitrage Strategy

Statistical Arbitrage / Index Trading Expert Singapore FTSE 100 Index ISF.L (iShares FTSE 100 ETF) FTSE 100 Futures FTSE 100 Constituent Stocks

Market neutral - profits from price discrepancies between index, ETF, futures, and constituent stocks

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Quick Reference

Strategy Type Index Arbitrage / ETF Arbitrage / Futures Basis Trading
Market Outlook Market neutral - profits from price discrepancies between index, ETF, futures, and constituent stocks
Risk Profile Lower Market Risk (hedged), Higher Execution Risk
Reward Profile Small but consistent gains from arbitrage spreads
Time Horizon Very Short-term (Intraday to Days)
Iv Environment Works in all conditions; opportunities increase during volatility
Breakeven Spread exceeds transaction costs

Payoff Profile

Profit from price discrepancies converging to fair value

Singapore Market Details

Primary Instruments ISF.L (iShares FTSE 100 ETF), FTSE 100 Futures (Z), FTSE 100 constituent stocks
Mas Compliance MAS regulated brokers required; futures and ETF trading permitted
Trading Hours London: 4 PM - 12:30 AM SGT; Futures extended hours available
Contract Size FTSE 100 Futures: £10 per point; ETF: Variable
Settlement Futures: Cash settled; ETF: T+2; Stocks: T+2
Tax Treatment No capital gains tax for individuals in Singapore
Stamp Duty 0.5% on UK stock purchases; ETFs may vary; Futures exempt
Cdp Account Not required for foreign instruments; custody with broker
Singapore Relevance Index arbitrage provides market-neutral returns uncorrelated to Singapore market

Frequently Asked Questions

What is index arbitrage?

Index arbitrage exploits price differences between related instruments (ETF, futures, stocks) that should trade at equivalent values. Long the cheap instrument, short the expensive one. Profit when they converge.

What is ETF premium?

ETF premium is when the ETF trades above its Net Asset Value (NAV). The ETF is 'expensive' vs its underlying holdings. Arbitrageurs short ETF and long basket/futures to capture the spread.

What is futures basis?

Basis = Futures Price - Spot Price. Should equal cost of carry (interest minus dividends). Deviations create opportunity. Contango = positive basis (normal). Backwardation = negative basis.

Why is this market neutral?

Long one instrument, short equivalent value of another. Both track the same index. Market moves cancel out. Only the spread between them matters for profit.

What returns can I expect?

Small but consistent: 0.1-0.3% per trade net of costs. High win rate (70%+). Annualized 3-6% with moderate frequency. Low risk, low reward per trade.

What is reconstitution trading?

Trading stocks being added/removed from index. Additions face buying pressure (index funds must buy). Deletions face selling. Trade 1-5 days before effective date. Can capture 1-5%.

What is dividend arbitrage?

Exploiting timing around ex-dividend. Stocks receive dividends, futures don't. Basis adjusts. Can capture mispricing around ex-dates. More complex, smaller opportunity.

Why use futures instead of stock basket?

Much cheaper: no stamp duty (0.5%), tiny bid-ask (~0.01%), one trade vs 100, lower commissions. Futures are the preferred hedge for retail arb.

What is cross-ETF arbitrage?

Trade spread between ETFs tracking same index (ISF.L vs VUKE.L). When their premiums/discounts diverge, long cheap ETF, short expensive. Convergence captures spread.

What costs should I consider?

ETF: 0.05-0.10% per leg. Futures: 0.02-0.05%. Stocks: 0.6-0.7% (stamp duty!). Need gross spread to exceed costs. ETF vs Futures arb is cheapest.

How do I calculate fair value?

Fair Value = Spot × (1 + (r - d) × t). r = interest rate (SONIA/LIBOR). d = dividend yield. t = time to expiry in years. Compare to actual futures price for basis deviation.

What residual risks exist?

Execution risk (slippage), basis risk (imperfect hedge), dividend uncertainty, liquidity risk, counterparty risk. Hedging reduces but doesn't eliminate risk. Quantify and monitor.

How does HFT affect retail arb?

HFT captures small spreads in milliseconds. Retail can't compete on speed. Focus on: larger spreads, longer horizons (reconstitution), volatility events where HFT may pull back.

What is calendar spread?

Long one futures expiry, short another (e.g., long June, short September). Captures term structure changes or roll premium. Lower margin than outright. Less directional risk.

What metrics should I track?

Sharpe (target >1.0), win rate (target >70%), average P/L per trade, gross vs net returns, slippage, attribution by arb type. Review weekly/monthly.

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