Who owns MultiSensor AI Holdings (MSAI)
Which tracked institutional funds hold MSAI, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MSAI company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-14). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
1 tracked fund added or opened MSAI while 2 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MSAI’s largest tracked holder by dollar value, 325 CAPITAL LLC, sizes it at 0.8% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.8pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MSAI divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 27 tracked filers holding MSAI, 17 increased or opened the position and 18 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MSAI between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
Full exits 1
- SANDERS MORRIS HARRIS LLC$900K
Largest adds
- BOOTHBAY FUND MANAGEMENT, LLC$498K
Largest trims
- 325 CAPITAL LLC$3M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| 325 CAPITAL LLC trimmed | 662,244 | $3M | 45.1% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC | 100,000 | $521K | 6.8% | 2026-Q2 |
| Bleichroeder LP trimmed | 30,562 | $159K | 2.1% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 21,622 | $113K | 1.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 5,870 | $31K | 0.4% | 2026-Q2 |
| Tower Research Capital LLC (TRC) added | 1,756 | $9K | 0.1% | 2026-Q2 |
| BARCLAYS PLC added | 1,751 | $9K | 0.1% | 2026-Q2 |
| UBS Group AG trimmed | 1,316 | $7K | 0.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC | 201,766 | $6K | 0.1% | 2026-Q2 |
| MMCAP International Inc. SPC | 175,250 | $5K | 0.1% | 2026-Q2 |
| WOLVERINE ASSET MANAGEMENT LLC | 158,593 | $5K | 0.1% | 2026-Q2 |
| 683 Capital Management, LLC | 150,000 | $4K | 0.1% | 2026-Q2 |
| O'Connor Alternative Investments LLC | 142,585 | $4K | 0.1% | 2026-Q2 |
| Clear Street Group Inc. trimmed | 128,278 | $4K | 0.0% | 2026-Q2 |
| Yakira Capital Management, Inc. | 104,518 | $3K | 0.0% | 2026-Q2 |
| TORONTO DOMINION BANK trimmed | 99,512 | $3K | 0.0% | 2026-Q2 |
| WHITEBOX ADVISORS LLC | 96,838 | $3K | 0.0% | 2026-Q2 |
| Calamos Advisors LLC | 75,000 | $2K | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. trimmed | 265 | $1K | 0.0% | 2026-Q2 |
| Cruiser Capital Advisors, LLC | 37,500 | $1K | 0.0% | 2026-Q2 |
| Aristides Capital LLC | 37,500 | $1K | 0.0% | 2026-Q2 |
| CHILTON CAPITAL MANAGEMENT LLC trimmed | 187 | $975 | 0.0% | 2026-Q2 |
| D. E. Shaw & Co., Inc. | 31,500 | $914 | 0.0% | 2026-Q2 |
| GABELLI FUNDS LLC | 27,347 | $793 | 0.0% | 2026-Q2 |
| GABELLI & Co INVESTMENT ADVISERS, INC. | 24,900 | $722 | 0.0% | 2026-Q2 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 31,218 | $712 | 0.0% | 2026-Q2 |
| Ancora Advisors LLC | 8,347 | $242 | 0.0% | 2026-Q2 |
| SANDERS MORRIS HARRIS LLC added | 3,892,370 | $900K | 11.8% | 2026-Q1 stale (1 quarter behind) |
| Ghisallo Capital Management LLC added | 960,339 | $222K | 2.9% | 2026-Q1 stale (1 quarter behind) |
| GEODE CAPITAL MANAGEMENT, LLC added | 529,953 | $122K | 1.6% | 2026-Q1 stale (1 quarter behind) |
| STATE STREET CORP | 124,300 | $29K | 0.4% | 2026-Q1 stale (1 quarter behind) |
| U.S. Capital Wealth Advisors, LLC trimmed | 83,573 | $19K | 0.3% | 2026-Q1 stale (1 quarter behind) |
| NORTHERN TRUST CORP | 81,889 | $19K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| XTX Topco Ltd added | 73,642 | $17K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| CITIGROUP INC added | 41,677 | $10K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| TWO SIGMA SECURITIES, LLC trimmed | 21,426 | $5K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 16,338 | $4K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| L1 Global Manager Pty Ltd new | 2,444,988 | $704K | 9.2% | 2025-Q4 stale (2 quarters behind) |
| Hudson Bay Capital Management LP new | 1,222,595 | $352K | 4.6% | 2025-Q4 stale (2 quarters behind) |
| VANGUARD GROUP INC added | 1,043,479 | $301K | 3.9% | 2025-Q4 stale (2 quarters behind) |
| TWO SIGMA INVESTMENTS, LP new | 300,645 | $87K | 1.1% | 2025-Q4 stale (2 quarters behind) |
| JANE STREET GROUP, LLC new | 200,148 | $58K | 0.8% | 2025-Q4 stale (2 quarters behind) |
| Virtu Financial LLC added | 44,902 | $13K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| BANK OF AMERICA CORP /DE/ added | 5,504 | $2K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Fortitude Family Office, LLC new | 1,116 | $321 | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Avion Wealth new | 500 | — | 0.0% | 2025-Q4 stale (2 quarters behind) |
| BARD ASSOCIATES INC trimmed | 578,000 | $373K | 4.9% | 2025-Q3 stale (3 quarters behind) |
| E&G Advisors, LP | 16,000 | $10K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| Polar Asset Management Partners Inc. | 182,850 | $7K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| 272 Capital LP | 112,500 | $4K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| ATW SPAC MANAGEMENT LLC | 100,000 | $4K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| ROYAL BANK OF CANADA | 25,000 | $1K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| CITADEL ADVISORS LLC trimmed | 16,192 | $615 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| CHERRYDALE WEALTH MANAGEMENT, LLC trimmed | 32,835 | $20K | 0.3% | 2025-Q2 stale (4 quarters behind) |
| Skylands Capital, LLC trimmed | 28,350 | $17K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| CLEAR STREET LLC added | 129,579 | $4K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
1 parent filing withheld from the table above, and from the coverage figures, to avoid listing one book twice: OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) (last filed 2025-Q4, 142,585 shares) reconciles to its 1 current affiliate (142,585 shares) — 0.000% apart.
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.