Research/Research note

Owning the statistic

372 NHL and MLB ETF registrations, and the mechanism behind them.

September 28, 2026 · Revision 3 · 12 registration statements, read in full

A team wins on a Tuesday night. A published index recalculates from the box score. Futures on that index reprice. An ETF holding those futures moves.

The whole chain runs on the score alone.

The exchange side now runs. CME Group listed the hockey contracts on September 28. The baseball ones still need a date. Between August 14 and September 22, 4 trusts registered 372 ETFs to sit at the end of the chain. 192 are on hockey and 180 on baseball. All 372 sit at the registration stage. Every fee is still blank.

The Commission is still deciding whether an ETF is allowed to hold this at all.

Whether, not when

The question in front of the SEC is whether this can be an ETF at all.

Better Markets wrote to the Commission on September 3, asking the SEC to reject ETFs holding election event contracts and sports performance futures. Its argument is about classification: these funds hold something other than securities, so the ETF label misleads buyers, and a familiar wrapper around an unfamiliar thing creates confusion. Approving them, it argues, would turn securities exchanges into venues for gambling. On its stated view, an ETF exists to give people a stake in public companies.

The SEC has paused. It put approvals of electoral event-contract funds on hold while it examines what it calls novel fund structures, and its public comment period on novel ETFs closed at the end of August. Approvals so far stand at zero.

There is also a clock, and it runs underneath that question rather than beside it. REX's hockey filing of September 21 checks the box for 75 days after filing, under Rule 485(a)(2). On that arithmetic the September wave, 244 of the 372, cannot go effective before December 5. The August wave computes to October 28 through November 8 on the same reading, though only the September box has been read.

So the constraint is definitional, and 372 registrations are stacked behind it. Four trusts. Twelve filings. 124 of them leveraged. All of it bets that the answer comes back yes. The index is built. The contracts list. The filings are done. The open question is whether the wrapper is permitted to exist.

Who is racing

These figures come from the registration statements themselves.

Twelve filings, 4 trusts, 372 ETFs. The August wave is 128, all hockey. The September wave is 244, and 180 of those are baseball. 214 of them land on the 21st, most through a REX subsidiary called Alpha Sports. Roundhill added 30 more on the 22nd. 124 of the 372 are leveraged, which is 33%.

Two details separate the sponsors.

The first is leverage. REX takes 200% of the daily performance of its own unlevered ETF, so the leveraged product is a wrapper over a wrapper. LeagueShares takes its exposure straight from the index, and phrases the multiple as a ceiling: up to 2 times the daily return. Two different instruments arrive at the same headline number.

The second is how finished these are. Roundhill and LeagueShares name tickers in all 5 of their filings. REX and Volatility Shares leave the ticker blank in all 6 of theirs.

One name is on more of this than any other. Roundhill runs BETZ, a sports betting and iGaming ETF. It registered 32 team ETFs in August and 30 more on September 22, the most recent filing in this note. It has also filed for prediction-market ETFs. One sponsor, selling the same activity three ways.

Four rungs

Sort these products by what the ETF actually owns, and the field organizes itself.

Ownership. Amplify filed on September 18 for an ETF holding public sports companies, with room for up to 15% in private club stakes. You own pieces of the businesses.

The operators. BETZ and ODDZ hold companies that earn revenue from wagering. Your exposure is to how much gets wagered.

Synthetic performance. The 372 sit here. Futures on a number computed from a box score.

The venue. DICE holds the places where outcomes get traded. It listed on September 9.

Each step down holds the game a little further away.

Today answers one of the two questions. The contracts are listed, they answer to the CFTC, and that part is settled. The 372 registrations answer to the SEC, which has approved none of them and is still deciding whether this can be an ETF at all. Nothing about the listing makes that second answer more likely: a futures market can run for years without an ETF ever holding it.

Past behavior only. Not a forecast, and nothing here is investment advice. How the measurement works →