Iowa Electronic Markets

University of Iowa academic exchange (CFTC no-action letter; ~$500 position cap)

Country: United States
Taker fee: 0 bps
Typical gas: —

§ Notes

Static HTML scraping of public price browser at iemweb.biz.uiowa.edu. Catalog historically 2–6 simultaneous markets; election cycles expand it. Bid/ask spreads routinely 20–40 ppt — fee-aware spread gating filters most cross-venue signal until participation rises.

§ Coverage

Markets ingested: 3
Active: 3
Delisted: 0
Events linked: 0
Last ingest: 3s ago

§ Top events by volume

No linked markets on this venue yet. As the matcher runs, event_link rows populate this table.

§ Schema health

Storm runs a canary against every venue that compares live API responses against the last-known schema shape. Drift, missing fields, and unexpected null-rates raise alarms routed to the operator queue.

§ Recent markets

2026 Senate Control Market iem_2026-u-s-senate-control-winner-takes-all-market · $0 vol · first seen 16d ago
2026 US House Control Market iem_2026-u-s-house-control-winner-takes-all-market · $0 vol · first seen 16d ago
2026 Congressional Control Market iem_2026-u-s-congressional-control-winner-takes-all-market · $0 vol · first seen 16d ago

§ Ingest cadence and policy

Storm ingests from this venue on the standard pull cadence (default hourly for the daemon; on-demand via storm markets pull iem). The ingester stores the raw payload alongside the normalized fields, so schema changes can be replayed without re-fetching.

Policy note: Static HTML scraping of public price browser at iemweb.biz.uiowa.edu. Catalog historically 2–6 simultaneous markets; election cycles expand it. Bid/ask spreads routinely 20–40 ppt — fee-aware spread gating filters most cross-venue signal until participation rises.