On-chain wrap, 26 May 2026: combined cluster crosses $680M as Rainbet has its week

Eight clustered casinos this week, two more than the April snapshot once Shuffle and Rollbit completed their Arkham tagging. The cluster total now sits at $680.84 million across the operators Arkham has identified, up roughly $14 million on the week. That is a slow grind, not a regime change. The interesting part this week is who moved inside the cluster.

The numbers

Stake is still half the cluster on its own. That has been the pattern every week we have tracked. What changes is the long tail. Shuffle and Rollbit now sit second and third with a combined $207 million, which is more interesting than the headline. A year ago this cluster was effectively Stake plus everyone else. It is now Stake plus three meaningful peers plus four smaller operators. The market is still concentrated. It is less of a monopoly than it was.

Rainbet's week

Rainbet added $13.2 million in a single week, a +27.6% jump. We have not seen a clustered casino move that fast in a seven-day window since we started running this dashboard. Two readings on what is going on. The first is operator behaviour: a single large transfer in from cold storage, ahead of a planned promotion or a routine working-capital top-up, can produce a move this size without any change in player flows. The second is product traction: Rainbet has been pushing harder on its sportsbook for two quarters, and weekly active deposits could be tracking that.

Both can be true at once. We do not have the deposit-flow data to disentangle them. What we can say is that the on-chain footprint is now the largest it has ever been on our snapshot, and that puts Rainbet meaningfully closer to the BC.Game and Roobet tier on this single metric than it was a month ago.

A +27.6% weekly jump in clustered reserves is not a player-flow signal. It is an operator-treasury signal. We are reading it as both, until the next two snapshots tell us which one was real.

The downside, in two operators

Roobet dropped 24.1% and BC.Game dropped 12.3%. Both of those are within the range we would expect from routine treasury reorganisation rather than a withdrawal-side problem. We have done test withdrawals from both this month and got our funds back inside the published median, so the reserves move is not flagging a slowdown that a player would feel at the cashier. If a player did feel one, we would say so plainly.

We mention this because every time a reserve number falls, someone in the comments asks if it is the start of a slow-payment story. So far this year, in our own withdrawal tests across the cluster, the answer has been no. We track median payout times at payout speeds, and the operators with the largest weekly reserve drops have not been the operators with the slowest withdrawal medians. The two metrics are not correlated. We keep checking anyway, because if that ever changes, that is the story.

Hyperliquid, separately

We added Hyperliquid to the site this month, scored at 8.4 and ranked fourth overall. We do not include its $4.0 billion in clustered DEX liquidity in the casino-cluster total above, because Hyperliquid is a different product. It is a perps and prediction venue with a casino-style overlay, and grouping its order-book collateral into a sportsbook reserves number would be a category error. We still track the figure. It sits at $4.02 billion this week, roughly six times the entire casino cluster. The distinction matters: that capital is in active trading positions, not in player balances.

What this tells you

One: the casino-cluster concentration is real, and Stake's 49.9% share is the headline you should remember from this snapshot. Two: Rainbet had the kind of week that warrants a follow-up read next Tuesday, because a +27% move that holds for two weeks means something. Three: the rest of the cluster is moving in low single digits week-on-week, which is healthy. A market where everyone moves 3% in either direction is a market that is functioning.

We have, between us, made bets on every operator in this table at some point in the last year. We do not have a position on whether Rainbet's number means treasury or traction. We do have an opinion on whether a single weekly snapshot should change anyone's deposit decision: it should not. Two snapshots, maybe. Four, definitely.

Methodology, in one paragraph

Balances are taken from Arkham Intelligence's public entity pages. Totals are converted to USD at Arkham's own spot prices at the snapshot timestamp. We do not aggregate unindexed operators into the totals, and we flag every operator that is unindexed rather than omitting them silently. Hyperliquid is tracked separately from the casino cluster because it is a DEX and the order-book collateral is not player balances. We publish a fresh snapshot every Tuesday. Source entity pages are public. The numbers are checkable. The aggregate index lives at on-chain reserves tracker. Next snapshot drops 2 June 2026.