Sub-cent parlays supplied 86% of the growth in Kalshi's record Sunday volume
Kalshi set daily volume records of $3.91 billion and $3.96 billion on Oct. 10 and 11, with parlay combos about 70% of each day. Markets outside combos traded $1.11 billion and $1.21 billion but supplied only 13% and 22% of the week-over-week gain.
The Investor · Invest desk
Kalshi's Sunday volume was $279 million above Oct. 4, and the rise in long-shot combo contracts was roughly $240 million of it. Saturday's was $459 million above Oct. 3, and the long-shot rise was roughly $344 million of it.
| Figure | Value | Note | Claim |
|---|---|---|---|
| Sunday long-shot rise | $240M roughly | 18 | |
| Sunday gain vs Oct. 4 | $279 million | 5 | |
| Saturday long-shot rise | $344M roughly | 18 | |
| Saturday gain vs Oct. 3 | $459 million | 5 |
What happened
- Both days beat the previous Kalshi high of $3.68 billion, set on Sunday, Oct. 4, according to the platform's daily market data.
- Saturday's total was $459 million above Oct. 3, with combos up $400 million, and Sunday's was $279 million above Oct. 4, with combos up $218 million.
- The rise in sub-cent long-shot combo contracts alone accounted for about three-quarters of Saturday's increase over the prior Saturday and 86% of Sunday's.
- On Sept. 28 Kalshi told the CFTC its Volume Incentive Program would end on Oct. 13 at the earliest, almost a year ahead of its scheduled Oct. 1, 2027 end.
Why it matters
- Who's exposed exposure A flat weekend from the sub-cent tranche would remove most of the week-over-week gain, because the gain leaned on that one product far more than the daily level did.
- What it limits constraint Notional is a weak guide to money at risk: buyers of the sub-cent contracts paid under $19 million on Saturday and under $16 million on Sunday, and the source does not report Kalshi's revenue on them.
- What it limits constraint Those trades never earned program rewards, so the records do not show how the rewarded 3-to-97-cent range will trade once the incentive program ends.
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The 70% share covers every combo, and the sub-cent long shots are a narrower slice of it. According to news.bitcoin.com's read of Kalshi's daily market data, about 1.9 billion of Saturday's combo contracts and 1.6 billion of Sunday's sat in combos whose Yes side never traded at 1 cent or more [6]. Notional counts each contract at its full $1 payout [3], so that is 49% of Saturday's $3.91 billion and 40% of Sunday's $3.96 billion [1][15][16]. Taking the source's shares of the week-over-week gains, the tranche added roughly $344 million of Saturday's $459 million increase and $240 million of Sunday's $279 million [18].
The 13-leg combo on NFL winners shows what the notional figure is counting. On Sunday it traded 12.1 million contracts at Yes prices between 0.01 cent and 0.44 cent; buyers paid about $13,800, the other side put up about $12.1 million, and the parlay lost [10]. The buyers' cash was 0.11% of the notional that went into the record [21]. That is a story about collateral, or rather about who posts it: in these trades the other side puts up the rest of each $1 [7].
The sub-cent segment grew without program rewards. Kalshi's Volume Incentive Program pays a share of per-market rewards capped at half a cent per contract, and for event contracts only order-book trades between 3 and 97 cents qualify, so the sub-cent combos were outside it [13]. The Sept. 28 filing did not state a reason for ending the program early [12]. The filing arrived during a CFTC review of incentive programs at prediction markets, and after an August staff advisory cautioned that volume rewards built on steep tiers or threshold bonuses can encourage wash trading [14].
We think the next few weekends' totals will follow that sub-cent tranche. The counter-thesis is that the two products are not separate. NFL markets traded $572 million on Sunday, up 18% from a week earlier [11], and a 13-leg parlay on NFL winners [10] draws on the same games, so some of the parlay growth may be the same demand in a different contract.
We would be wrong if a weekend clears the $3.68 billion high [2] with the sub-cent tranche flat or smaller. Seven days above $3 billion, all since Sept. 19 [9], is also a short record to build on.
What to watch
- Whether Kalshi's Volume Incentive Program actually ends on or after Oct. 13, and what volume in the 3-to-97-cent range does afterward.
- Next weekend's split between sub-cent combos and everything else, against the $3.68 billion prior high.
- Any CFTC action on prediction market incentive programs following the August staff advisory on wash trading.
Information, not investment advice. This story is general information about companies and markets, drawn from cited reporting. It is not a recommendation to buy, sell or hold any security; check the cited sources before acting.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence72
- Adoption45
- Hype gap+40
- Incentives30
- Confidence68
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
Kalshi's daily market data, which runs on U.S. Eastern days, shows $3.91 billion in notional volume on Saturday, Oct. 10, and $3.96 billion on Sunday, Oct. 11.
- [2]
Both days were above the previous high of $3.68 billion, set on Sunday, Oct. 4.
- [3]
Notional volume counts each contract at its full $1 payout, which the buyer and seller fund between them according to the price.
- [4]
Combos, Kalshi's parlay-style contracts that bundle several outcomes into one, accounted for $2.80 billion of Saturday's volume, or 71.6%, and $2.75 billion of Sunday's, or 69.4%.
- [5]
Saturday's total was $459 million higher than on Oct. 3, with combos up $400 million, and Sunday's was $279 million higher than on Oct. 4, with combos up $218 million.
- [6]
About 1.9 billion of Saturday's 2.8 billion combo contracts, and 1.6 billion of Sunday's 2.75 billion, were in combos whose Yes side never traded at 1 cent or more that day.
- [7]
In those trades, the parlay buyer paid a fraction of a cent per contract and the other side put up the rest of the $1.
- [8]
The rise in those long-shot contracts alone accounted for about three-quarters of Saturday's increase over the previous Saturday and 86% of Sunday's.
- [9]
Kalshi has now passed $3 billion on seven days, all of them since Sept. 19.
- [10]
One 13-leg combo on NFL winners traded 12.1 million contracts on Sunday at Yes prices between 0.01 cent and 0.44 cent. Parlay buyers paid about $13,800 for them, and the other side put up about $12.1 million. The parlay lost.
- [11]
On Sunday, NFL markets traded $572 million, up 18% from a week earlier.
- [12]
Kalshi told the CFTC in a Sept. 28 filing that it would end its Volume Incentive Program no earlier than Oct. 13, nearly a year before its scheduled Oct. 1, 2027, end. The filing gave no reason.
- [13]
The Volume Incentive Program pays traders a share of per-market rewards, capped at half a cent per contract. For event contracts, only order-book trades at prices between 3 and 97 cents qualify, so the sub-cent combos behind most of the weekend's growth did not.
- [14]
The early end came as the CFTC was reviewing prediction market incentive programs, after an August staff advisory warned that volume-based rewards with steep tiers or threshold bonuses can encourage wash trading.
- [15]
Long-shot combo contracts were about 49% of Saturday's volume.
- [16]
Long-shot combo contracts were about 40% of Sunday's volume.
- [17]
Buyers of the sub-cent long-shot contracts paid under $19 million on Saturday and under $16 million on Sunday, since every Yes trade was below 1 cent.
- [18]
The long-shot tranche's rise was roughly $344 million of Saturday's $459 million increase and roughly $240 million of Sunday's $279 million increase.
- [19]
Markets outside combos supplied about 13% of Saturday's gain ($59 million) and about 22% of Sunday's ($61 million).
- [20]
Markets outside combos traded about $1.11 billion on Saturday and $1.21 billion on Sunday.
- [21]
In the 13-leg NFL combo, buyers' cash was about 0.11% of the notional traded.
Sources
2 independent publishers whose own reporting we read for this story.
- cryptobriefing.comKalshi sets back-to-back daily volume records as parlays drive 70% of trading
1 article · October 13, 2026
- news.bitcoin.comParlays Push Kalshi Past $3.9 Billion in a Day, Twice in a Weekend
1 article · October 12, 2026
Topics and entities
Topics
- Prediction Markets
- Sports Betting Regulation
- Parlay and combo contracts