Who owns MAIA Biotechnology, Inc. (MAIA)
Which tracked institutional funds hold MAIA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MAIA company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-15). 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
The tracked-fund tape on MAIA is one-sided between 2025-Q4 and 2026-Q1: 6 added or opened and 1 trimmed or exited — on balance accumulating.
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
MAIA’s largest tracked holder by dollar value, Solas Capital Management, LLC, sizes it at 3.5% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 3.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MAIA 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 2025-Q4 and 2026-Q1, across 32 tracked filers holding MAIA, 20 increased or opened the position and 9 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
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 MAIA between the 2025-Q4 and 2026-Q1 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.
New buyers 6
- Solas Capital Management, LLC$6M
- Alyeska Investment Group, L.P.$4M
- VANGUARD CAPITAL MANAGEMENT LLC$3M
- 683 Capital Management, LLC$1M
- Cable Car Capital, LP$908K
- Bleichroeder LP$700K
Full exits 1
- VANGUARD GROUP INC$2M
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 |
|---|---|---|---|---|
| Solas Capital Management, LLC new | 4,297,004 | $6M | 28.9% | 2026-Q1 |
| Alyeska Investment Group, L.P. new | 2,500,000 | $4M | 16.8% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 2,074,045 | $3M | 13.9% | 2026-Q1 |
| 683 Capital Management, LLC new | 1,066,666 | $1M | 7.2% | 2026-Q1 |
| Centric Wealth Management added | 796,723 | $1M | 5.3% | 2026-Q1 |
| Cable Car Capital, LP new | 648,503 | $908K | 4.4% | 2026-Q1 |
| Bleichroeder LP new | 500,000 | $700K | 3.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 360,481 | $505K | 2.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 199,314 | $279K | 1.3% | 2026-Q1 |
| STATE STREET CORP added | 138,950 | $195K | 0.9% | 2026-Q1 |
| BlackRock, Inc. added | 127,978 | $179K | 0.9% | 2026-Q1 |
| CORSAIR CAPITAL MANAGEMENT, L.P. new | 100,000 | $140K | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP added | 52,539 | $74K | 0.4% | 2026-Q1 |
| UBS Group AG added | 51,917 | $73K | 0.3% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 36,000 | $50K | 0.2% | 2026-Q1 |
| Creative Planning trimmed | 28,602 | $40K | 0.2% | 2026-Q1 |
| RITHOLTZ WEALTH MANAGEMENT | 23,071 | $32K | 0.2% | 2026-Q1 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC new | 20,071 | $28K | 0.1% | 2026-Q1 |
| Centerpoint Advisory Group | 15,730 | $22K | 0.1% | 2026-Q1 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | 14,800 | $20K | 0.1% | 2026-Q1 |
| MORGAN STANLEY added | 13,859 | $19K | 0.1% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 11,401 | $16K | 0.1% | 2026-Q1 |
| Catalyst Funds Management Pty Ltd new | 10,800 | $15K | 0.1% | 2026-Q1 |
| Cambridge Investment Research Advisors, Inc. | 10,620 | $15K | 0.1% | 2026-Q1 |
| OSAIC HOLDINGS, INC. | 8,334 | $12K | 0.1% | 2026-Q1 |
| Daytona Street Capital LLC | 7,500 | $10K | 0.0% | 2026-Q1 |
| CURIO WEALTH, LLC | 2,000 | $3K | 0.0% | 2026-Q1 |
| MAI Capital Management | 675 | $945 | 0.0% | 2026-Q1 |
| JONES FINANCIAL COMPANIES LLLP | 228 | $299 | 0.0% | 2026-Q1 |
| CITIGROUP INC trimmed | 22 | $31 | 0.0% | 2026-Q1 |
| FMR LLC new | 2 | $2 | 0.0% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 268 | — | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC added | 1,154,833 | $2M | 8.5% | 2025-Q4 stale |
| Halter Ferguson Financial Inc. trimmed | 237,356 | $363K | 1.7% | 2025-Q1 stale |
| MARSHALL WACE, LLP added | 110,467 | $170K | 0.8% | 2025-Q3 stale |
| JANE STREET GROUP, LLC added | 78,757 | $120K | 0.6% | 2025-Q4 stale |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 14,288 | $22K | 0.1% | 2025-Q4 stale |
| Naviter Wealth, LLC trimmed | 10,000 | $16K | 0.1% | 2025-Q1 stale |
| StoneX Group Inc. new | 10,249 | $16K | 0.1% | 2025-Q4 stale |
| Tower Research Capital LLC (TRC) added | 4,026 | $6K | 0.0% | 2025-Q3 stale |
| SRH ADVISORS, LLC new | 653 | $999 | 0.0% | 2025-Q4 stale |
| Bernard Wealth Management Corp. | 500 | $765 | 0.0% | 2025-Q1 stale |
| TUCKER ASSET MANAGEMENT LLC | 341 | $522 | 0.0% | 2025-Q4 stale |
| RAYMOND JAMES FINANCIAL INC new | 100 | $180 | 0.0% | 2025-Q2 stale |
| JPMORGAN CHASE & CO added | 50 | $90 | 0.0% | 2025-Q2 stale |
| BANK OF AMERICA CORP /DE/ added | 30 | $46 | 0.0% | 2025-Q4 stale |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale |
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.