TBT vs ROM overlap

TBT and ROM overlap 3.0% by weight, across 1 shared holdings.

TBTROM

Pick 2 to 4 ETFs.

3.0%

overlap by weight, across 1 shared holdings

TBT72.2% of the fund is in shared holdings, of 1

ROM3.0% of the fund is in shared holdings, of 74

Top shared holdings

Holding	TBT	ROM	Overlap
ProShares GENIUS Money Market ETF	72.17%	2.95%	2.95%

Overlap by weight adds up the smaller weight of each holding the funds share, so 100% means identical portfolios. Long securities only: derivatives and cash vehicles are left out. Sources: TBT, SEC Form N-PORT, May 31, 2026; ROM, SEC Form N-PORT, May 31, 2026.

institutions report holding both, of 126 holding any

TBT4.8% of its 13F dollars, 10.3% of its 58 holders

ROM7.7% of its 13F dollars, 8.1% of its 74 holders

Largest institutions holding both

Firm	TBT	ROM
Harbour Investments, Inc.	$3K	$4.8M
Citadel Advisors LLC	$2.5M	$653K
Mariner, LLC	$652K	$2.2M
Royal Bank of Canada	$961K	$10K
CoreCap Advisors, LLC	$1K	$7
Morgan Stanley	$73	$173

This compares who owns the funds, not what the funds hold. From SEC Form 13F, for managers with $100M+ in US securities.

Who owns them: TBT institutional holders, ROM institutional holders.

Frequently asked questions

How much do TBT and ROM overlap?

3.0% by weight, with 1 holdings in common, using holdings for TBT as of May 31, 2026 and ROM as of May 31, 2026. The largest shared position is ProShares GENIUS Money Market ETF.

Do institutions hold both TBT and ROM?

6 Form 13F filers report positions in both, out of 126 that report either one.

How is overlap by weight worked out?

For each holding the two funds share, take the smaller of the two weights, then add those up. Identical portfolios score 100%.