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ETH Daily Signal Post-Mortem: +5.52 pp Edge

Ethereum Up or Down on July 21?

POLYMARKET ENTRY89.0%91.0% EXECUTABLE
MARX FAIR AT ENTRY97.6%HISTORICAL · CLOSED
MODELED EDGE+5.52 ppNET AT ENTRY
CONFIDENCE83.3%UP UNDERPRICED
RETURN5.7%SIMULATED
ROUND REPLAY

Interactive Polymarket vs Marx Fair divergence

Market UP 97.3%Marx Fair UP 99.9%
Market UP and Marx Fair UP history0255075100
Jul 21, 10:48 AMJul 21, 11:37 AMJul 21, 12:26 PMJul 21, 01:15 PMJul 21, 02:04 PM UTC

Market UP and Marx Fair UP history

Text equivalent of the chart
TimePolymarketMarx FairEdge
2026-07-21T10:48:08.825Z90.5%94.3%+3.8 pp
2026-07-21T10:51:22.517Z90.5%94.3%+3.8 pp
2026-07-21T11:23:17.791Z84.5%92.5%+8.0 pp
2026-07-21T11:36:22.588Z87.0%95.3%+8.3 pp
2026-07-21T11:56:20.516Z89.5%97.0%+7.5 pp
2026-07-21T11:57:48.971Z89.5%97.0%+7.5 pp
2026-07-21T11:59:19.242Z89.5%97.2%+7.7 pp
2026-07-21T12:12:18.893Z89.5%98.3%+8.8 pp
2026-07-21T12:21:20.973Z91.5%99.2%+7.7 pp
2026-07-21T12:29:20.031Z94.0%99.1%+5.1 pp
2026-07-21T12:33:19.414Z94.0%99.4%+5.4 pp
2026-07-21T12:48:21.331Z93.5%99.4%+5.9 pp
2026-07-21T12:58:34.618Z92.5%99.4%+6.9 pp
2026-07-21T13:58:01.713Z97.5%99.9%+2.4 pp
2026-07-21T13:59:15.116Z97.0%99.9%+2.9 pp
2026-07-21T14:04:25.553Z97.3%99.9%+2.6 pp
AUDIT TRAIL

Signal breakdown and trigger

  • Marx Fair was 97.6% while the Polymarket UP price was 89.0%.
  • The executable UP entry was 91.0¢ with a net modeled edge of 5.5 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 UP: $100 VWAP 92.0%, gross edge 6.3%, slippage 0.0%, fee 0.5%, safety 0.5%, net edge 5.3%. Marx fair UP is 98.3%.

ETH Daily Signal Post-Mortem: +5.52 pp Edge | AntiPredict