On July 14, 2026, VolRoc recorded 124,743 active prediction markets across Kalshi and Polymarket, holding $1.58B in combined open interest. Day over day, active markets rose 33.9% and open interest rose 11.3% (vs July 13, 2026). Sports was the largest domain by open interest (37%), ahead of Politics & Elections (29%); together they accounted for 66% of all open interest. Kalshi carried 68% of active markets and Polymarket 32%.
Deterministic · template v1 · 2026-07-14
As of 2026-07-14 · 00:00 UTC
Active Markets
124,743
00:00 UTC freeze
Open Interest
$1.58B
Kalshi OI + Polymarket liquidity
Markets Traded · 24h
18,983
with trading activity
Kalshi / Polymarket
68% / 32%
by active-market count
Domain Composition — 12 domains
Sports
75,896
Other
24,898
Mixed / Multi-category
8,524
Politics & Elections
6,285
Entertainment & Culture
2,589
Crypto & Digital Assets
1,832
Climate & Weather
1,188
Companies & Business
1,054
Economics & Inflation
922
World & Geopolitics
514
Technology & AI
495
Monetary Policy
429
Science & Health
117
Venue-agnostic subject taxonomy from Kalshi series prefixes and
Polymarket title keywords. A residual Other bucket is reported honestly.
Yes-price across both venues, 10 buckets from 0 to 100. n = 124,743.
Largest Kalshi Series
Sports — multi-game parlays
51,041
Cross-category multi-markets
8,524
Midterm control
844
Music — artist streams
786
U.S. House races
589
Nextteamnba
433
NFL — next team moves
254
Nextteammlb
220
Nflwins
203
Wcaward
191
Flprimary
189
Pgatour
182
Kalshi market families (Polymarket is not series-structured).
About & Citation
This is the fixed-hour (00:00 UTC) state of every active market on
Kalshi and Polymarket for July 14, 2026. The live
Observatory
shows the current diurnal value; this record is immutable. Open interest combines Kalshi
open interest with Polymarket USD liquidity as comparable USD magnitudes. Sources: Kalshi, Polymarket.
How to cite
“VolRoc Prediction Market Archive — July 14, 2026.” https://volroc.ai/prediction-markets/2026-07-14/
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