- Costs updated to evidence-based values (SEC small-cap liquidity study 2013,
Nasdaq spread data 2021, AQR Trading Costs paper 2018):
large ~0.2% RT, mid ~0.5%, small ~1.5%, micro ~5%
- Micro-cap note: Alpaca does not allow new OTC/Pink Sheet positions;
most micro-cap signals are untradeable; at realistic 5% RT, micro-cap
destroys capital (-36% to -81% excess return)
- db.py: get_cached_market_caps returns already_fetched set including null
rows, preventing repeated yfinance re-queries for known-missing tickers
- plot_hp_heatmap: colorbar in dedicated axes (right margin), no overlap
- plot_equity_curves: two-pass approach clips all curves to min end date
- README: updated cost table, shortened insidercopytrading.com section
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Dominik Roth
b615920843