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ETH Daily Signal Post-Mortem: +5.99 pp Edge

Ethereum Up or Down on July 20?

POLYMARKET ENTRY30.5%76.1% EXECUTABLE
MARX FAIR AT ENTRY16.1%HISTORICAL · CLOSED
MODELED EDGE+5.99 ppNET AT ENTRY
CONFIDENCE83.3%DOWN UNDERPRICED
RETURN-12.8%SIMULATED
ROUND REPLAY

Interactive Polymarket vs Marx Fair divergence

Market UP 30.5%Marx Fair UP 26.7%
Market UP and Marx Fair UP history0255075100
Jul 20, 11:40 AMJul 20, 12:15 PMJul 20, 12:50 PMJul 20, 01:25 PMJul 20, 02:00 PM UTC

Market UP and Marx Fair UP history

Text equivalent of the chart
TimePolymarketMarx FairEdge
2026-07-20T11:40:44.354Z82.5%87.5%+5.0 pp
2026-07-20T11:44:43.380Z76.5%82.1%+5.6 pp
2026-07-20T11:48:47.308Z74.0%84.9%+10.9 pp
2026-07-20T11:53:43.931Z76.0%85.3%+9.3 pp
2026-07-20T11:58:39.099Z69.5%91.2%+21.7 pp
2026-07-20T11:58:43.342Z78.0%91.2%+13.2 pp
2026-07-20T11:59:43.679Z78.0%89.0%+11.0 pp
2026-07-20T12:57:39.615Z54.5%55.8%+1.3 pp
2026-07-20T12:58:44.547Z51.5%55.8%+4.3 pp
2026-07-20T13:56:39.438Z30.5%16.1%-14.4 pp
2026-07-20T13:57:44.048Z30.5%16.1%-14.4 pp
2026-07-20T13:59:43.719Z30.5%25.0%-5.5 pp
2026-07-20T14:00:44.843Z30.5%26.7%-3.8 pp
AUDIT TRAIL

Signal breakdown and trigger

  • Marx Fair was 16.1% while the Polymarket UP price was 30.5%.
  • The executable DOWN entry was 76.1¢ with a net modeled edge of 6.0 percentage points.
  • Model confidence at the signal was 83.3%.
  • Observed order-book spread at entry was 1.0¢.
MODEL NOTE

Marx AI inference

Buy DOWN: $100 VWAP 76.1%, gross edge 7.9%, slippage 0.1%, fee 1.3%, safety 0.5%, net edge 6.0%. Marx fair UP is 16.1%.

ETH Daily Signal Post-Mortem: +5.99 pp Edge | AntiPredict