The multistrat book had BTC-USD as 1 of 6 streams — redundant (crypto exposure
already comes from the Bybit book) AND the main source of correlation between the
equity and crypto legs. Measured (437d overlap): dropping BTC cuts multistrat<->crypto
daily-return correlation +0.284 -> +0.175, lifts multistrat's own Sharpe 1.23 -> 1.46,
and the combined portfolio Sharpe ~1.95 -> 2.14. Nothing lost (crypto exposure stays
via the Bybit book); the Alpaca leg is now pure equities (no crypto order).
- multistrat: FUND_INSTRUMENTS = the 5 pure-equity ETFs (SPY/IEF/GLD/PDBC/DBMF);
book_series/target_weights/_build parameterized by instrument list (default = the
original 6, faithful port intact). MultiStratStrategy takes an instruments arg.
- multistrat_nav + execute-multistrat use FUND_INSTRUMENTS (BTC symbol map dropped).
Full suite green (1838). Re-inceptions the multistrat track (return series changed).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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