RBB Fund, Inc. (TMFX)
Management Company · XNYS · Series S000074884 · View on SEC EDGAR ↗
- Net assets
- $32.1M
- Holdings
- 190
- As of
- May 31, 2026
- Top 10 holdings weight
- 17.51%
- Effective number of positions
- 106.3
- Positions above 1%
- 28
On this page
- Fund flows Money flowing in and out of the fund each month, from N-PORT filings.
- Holdings Every position the fund currently holds, with weights.
- Sector breakdown How the fund's holdings split across market sectors.
- Institutional owners 13F institutions that report holding this ETF.
- Similar funds Other funds with overlapping holdings or comparable size.
Fund flows (SEC-reported)
- Last month (May 2026)
- -$1.1M
- Quarter ending May 2026
- -$1.7M
- Trailing 12 months
- -$2.3M
Jun 2025 – May 2026
Based on the fund's own SEC Form N-PORT monthly flow disclosures (Item C.9 "Flow Information") — sales minus redemptions, reinvested distributions excluded. This is a different, independent metric from the "Net flows" estimate above (which is derived from daily shares-outstanding changes). SEC N-PORT filing lag is up to ~60 days; the most recent month/quarter may not yet be fully reflected.
Full composition 190 holdings
| Name | CUSIP | Value | % | Balance | Category | Country |
|---|---|---|---|---|---|---|
| Middleby Corp/The | 596278101 | $119K | 0.37 | 769 | EC | US |
| Dutch Bros Inc | 26701L100 | $119K | 0.37 | 2,051 | EC | US |
| Paycom Software Inc | 70432V102 | $115K | 0.36 | 826 | EC | US |
| STAG Industrial Inc | 85254J102 | $114K | 0.36 | 3,012 | EC | US |
| LKQ Corp | 501889208 | $111K | 0.35 | 4,101 | EC | US |
| ServiceTitan Inc | 81764X103 | $111K | 0.34 | 1,528 | EC | US |
| Kinsale Capital Group Inc | 49714P108 | $109K | 0.34 | 359 | EC | US |
| Repligen Corp | 759916109 | $107K | 0.33 | 867 | EC | US |
| Urban Outfitters Inc | 917047102 | $107K | 0.33 | 1,471 | EC | US |
| Kymera Therapeutics Inc | 501575104 | $106K | 0.33 | 1,305 | EC | US |
| Etsy Inc | 29786A106 | $105K | 0.33 | 1,547 | EC | US |
| CarMax Inc | 143130102 | $104K | 0.32 | 2,330 | EC | US |
| Crocs Inc | 227046109 | $95K | 0.30 | 802 | EC | US |
| GXO Logistics Inc | 36262G101 | $94K | 0.29 | 1,867 | EC | US |
| Appfolio Inc | 03783C100 | $91K | 0.28 | 567 | EC | US |
| U.S. Bank Money Market Deposit Account | 8AMMF0A92 | $91K | 0.28 | 91,015 | STIV | US |
| Gitlab Inc | 37637K108 | $88K | 0.27 | 2,839 | EC | US |
| TG Therapeutics Inc | 88322Q108 | $87K | 0.27 | 2,291 | EC | US |
| Alaska Air Group Inc | 011659109 | $85K | 0.27 | 1,851 | EC | US |
| Duolingo Inc | 26603R106 | $81K | 0.25 | 723 | EC | US |
| WEX Inc | 96208T104 | $80K | 0.25 | 551 | EC | US |
| Axos Financial Inc | 05465C100 | $79K | 0.25 | 913 | EC | US |
| IPG Photonics Corp | 44980X109 | $79K | 0.25 | 690 | EC | US |
| Life360 Inc | 532206109 | $79K | 0.25 | 1,855 | EC | US |
| Ollie's Bargain Outlet Holding | 681116109 | $78K | 0.24 | 961 | EC | US |
| Perimeter Solutions Inc | 71385M107 | $77K | 0.24 | 2,388 | EC | US |
| Vail Resorts Inc | 91879Q109 | $75K | 0.23 | 561 | EC | US |
| Impinj Inc | 453204109 | $75K | 0.23 | 495 | EC | US |
| Nelnet Inc | 64031N108 | $73K | 0.23 | 559 | EC | US |
| Meritage Homes Corp | 59001A102 | $70K | 0.22 | 1,077 | EC | US |
| RXO Inc | 74982T103 | $70K | 0.22 | 2,730 | EC | US |
| Trex Co Inc | 89531P105 | $69K | 0.22 | 1,670 | EC | US |
| Wingstop Inc | 974155103 | $69K | 0.22 | 440 | EC | US |
| Lemonade Inc | 52567D107 | $69K | 0.21 | 1,190 | EC | US |
| Universal Display Corp | 91347P105 | $67K | 0.21 | 728 | EC | US |
| Planet Fitness Inc | 72703H101 | $65K | 0.20 | 1,211 | EC | US |
| Varonis Systems Inc | 922280102 | $63K | 0.20 | 1,856 | EC | US |
| Doximity Inc | 26622P107 | $62K | 0.19 | 2,892 | EC | US |
| Bread Financial Holdings Inc | 018581108 | $61K | 0.19 | 689 | EC | US |
| Viking Therapeutics Inc | 92686J106 | $61K | 0.19 | 1,854 | EC | US |
| Shift4 Payments Inc | 82452J109 | $59K | 0.18 | 1,320 | EC | US |
| Box Inc | 10316T104 | $59K | 0.18 | 2,172 | EC | US |
| Beam Therapeutics Inc | 07373V105 | $53K | 0.16 | 1,599 | EC | US |
| elf Beauty Inc | 26856L103 | $52K | 0.16 | 936 | EC | US |
| Upstart Holdings Inc | 91680M107 | $52K | 0.16 | 1,525 | EC | US |
| United Natural Foods Inc | 911163103 | $50K | 0.16 | 972 | EC | US |
| Warby Parker Inc | 93403J106 | $49K | 0.15 | 2,014 | EC | US |
| Braze Inc | 10576N102 | $48K | 0.15 | 1,861 | EC | US |
| Under Armour Inc | 904311107 | $48K | 0.15 | 8,103 | EC | US |
| Phinia Inc | 71880K101 | $46K | 0.14 | 601 | EC | US |
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Sector breakdown
Technology
25.3%
Healthcare
17.3%
Industrials
16.3%
Retail
8.7%
Financial Services
7.5%
Consumer Discretionary
5.2%
Communication Services
4.9%
Financials
3.0%
Real Estate
2.3%
Consumer products
2.0%
Telecommunication
1.8%
Consumer Staples
1.7%
Materials
1.5%
Diversified Consumer Services
0.3%
Logistics & Transportation
0.3%
Energy
0.0%
Other/Unmapped
2.0%
Institutional owners (13F) 15 filers
Institutions that report holding this ETF in their quarterly SEC Form 13F. Long positions only; a single filer may appear twice for separate option legs. Large offsetting put/call legs typically reflect market-making or hedged inventory, not directional conviction.
| Institution | Value | % of tracked 13F | Shares | Type | As of |
|---|---|---|---|---|---|
| CITADEL ADVISORS LLC | $498,708 | 26.24% | 21,854 | Shares | June 30, 2026 |
| GTS SECURITIES LLC | $400,856 | 21.09% | 17,566 | Shares | June 30, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $357,635 | 18.82% | 15,672 | Shares | June 30, 2026 |
| HARBOUR INVESTMENTS, INC. | $308,293 | 16.22% | 13,510 | Shares | June 30, 2026 |
| H D Vest Advisory Services | $252,681 | 13.29% | 12,350 | Shares | June 30, 2025 |
| UBS Group AG | $35,280 | 1.86% | 1,546 | Shares | June 30, 2026 |
| OSAIC HOLDINGS, INC. | $14,308 | 0.75% | 627 | Shares | June 30, 2026 |
| Smartleaf Asset Management LLC | $13,705 | 0.72% | 602 | Shares | June 30, 2026 |
| ROYAL BANK OF CANADA | $10,000 | 0.53% | 450 | Shares | June 30, 2026 |
| Golden State Wealth Management, LLC | $4,635 | 0.24% | 203 | Shares | June 30, 2026 |
| CWM, LLC | $1,977 | 0.10% | 99 | Shares | March 31, 2026 |
| JPMORGAN CHASE & CO | $1,750 | 0.09% | 77 | Shares | June 30, 2026 |
| Bogart Wealth, LLC | $776 | 0.04% | 34 | Shares | June 30, 2026 |
| MORGAN STANLEY | $47 | 0.00% | 2 | Shares | June 30, 2026 |
| AE Wealth Management LLC | $19 | 0.00% | 1 | Shares | June 30, 2026 |
Peer funds
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|---|---|
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| GLDY Tidal Trust II | $32.3M |
| SIXD AIM ETF Products Trust | $32.3M |
| EAOR iShares Trust | $32.1M |
| UMDD ProShares Trust | $31.9M |
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