What is hedge fund replication and does it actually work?

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AcadiFi · Accepted Answer

Hedge fund replication attempts to mimic hedge fund index returns using liquid instruments (futures, ETFs, options) without paying 2-and-20. Two main approaches: factor-based and mechanical-strategy-based.

Factor-based replication regresses hedge fund index returns on liquid factors (equity, credit spread, term premium, currency, momentum, VIX). Estimated betas are rebalanced monthly and applied to the current factor exposures. This works best for diversified strategies — long-short equity and macro replicate reasonably well, typically 60-75% of gross hedge fund beta returns.

Mechanical replication mimics a specific strategy's known rules — trend following, merger arbitrage, convertible arb. Because the underlying strategy is rule-based, replication can be higher-fidelity, sometimes tracking within 200-300 bps per year.

At Trellis: switching $150M from a 2%/20% HFRI-tracking mandate to a factor-replication strategy charging 0.5% could save $2.25M per year in management fees plus variable performance fees. Over 10 years, fee savings compound meaningfully.

Limitations AcadiFi candidates must flag: (1) Replication captures beta, not true alpha — manager-specific skill is unreplicable by construction. (2) Strategies with illiquidity premia (distressed, private credit arb) cannot be replicated with liquid instruments. (3) Tail-risk behavior of hedge funds during crises is hard to match without embedded optionality. (4) Some hedge fund indices have survivorship and backfill bias, so the replication target itself is suspect. Net conclusion: replication is a legitimate tool for beta exposure, but not a substitute for best-in-class manager selection where true alpha exists.

What is hedge fund replication and does it actually work?

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