Cross-listing pair spreads (60-day z-score)
| Pair | Base close | Pair close | Ratio | 60d avg | Z-score |
|---|---|---|---|---|---|
| GOOGL / GOOG | 380.36 | 377.13 | 1.0086 | 1.0033 | +1.52σ |
|z| > 2 → 95% tail. Pair list is hard-coded in web/lib/arbitrage-data.ts; add cross-listings there.
Pair ratios computed live from prices_daily. ETF premiums require etf_nav_premium_history (migration 041). ← Back to Tools