Who owns Beyond Air, Inc. (XAIR)
Which tracked institutional funds hold XAIR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See XAIR 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.
Conviction spread
XAIR’s largest tracked holder by dollar value, Alyeska Investment Group, L.P., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in XAIR 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 28 tracked filers holding XAIR, 8 increased or opened the position and 14 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
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 |
|---|---|---|---|---|
| BALYASNY ASSET MANAGEMENT L.P. | 464,161 | $320K | 14.3% | 2026-Q1 |
| Murchinson Ltd. new | 329,987 | $228K | 10.1% | 2026-Q1 |
| Daytona Street Capital LLC new | 156,850 | $115K | 5.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 159,443 | $110K | 4.9% | 2026-Q1 |
| Bleichroeder LP | 86,489 | $60K | 2.7% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 31,941 | $22K | 1.0% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 29,368 | $20K | 0.9% | 2026-Q1 |
| WEALTH EFFECTS LLC trimmed | 28,355 | $20K | 0.9% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 27,521 | $19K | 0.8% | 2026-Q1 |
| BlackRock, Inc. | 22,033 | $15K | 0.7% | 2026-Q1 |
| BALDWIN WEALTH PARTNERS LLC/MA | 14,800 | $10K | 0.5% | 2026-Q1 |
| XTX Topco Ltd trimmed | 12,065 | $8K | 0.4% | 2026-Q1 |
| Virtu Financial LLC trimmed | 10,801 | $7K | 0.3% | 2026-Q1 |
| OSAIC HOLDINGS, INC. | 8,116 | $6K | 0.2% | 2026-Q1 |
| Tower Research Capital LLC (TRC) trimmed | 4,583 | $3K | 0.1% | 2026-Q1 |
| PFS Partners, LLC | 2,000 | $1K | 0.1% | 2026-Q1 |
| IFP Advisors, Inc | 1,136 | $784 | 0.0% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 539 | $372 | 0.0% | 2026-Q1 |
| MAI Capital Management | 500 | $346 | 0.0% | 2026-Q1 |
| GROUP ONE TRADING LLC trimmed | 135 | $93 | 0.0% | 2026-Q1 |
| GODSEY & GIBB, INC | 50 | $35 | 0.0% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS | 41 | $28 | 0.0% | 2026-Q1 |
| MORGAN STANLEY trimmed | 40 | $28 | 0.0% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 40 | $27 | 0.0% | 2026-Q1 |
| CWM, LLC trimmed | 25 | $17 | 0.0% | 2026-Q1 |
| SBI Securities Co., Ltd. trimmed | 12 | $8 | 0.0% | 2026-Q1 |
| JONES FINANCIAL COMPANIES LLLP | 10 | $7 | 0.0% | 2026-Q1 |
| UBS Group AG trimmed | 9 | $6 | 0.0% | 2026-Q1 |
| Alyeska Investment Group, L.P. trimmed | 582,638 | $423K | 18.8% | 2025-Q4 stale |
| WEALTHEDGE INVESTMENT ADVISORS, LLC added | 732,934 | $200K | 8.9% | 2025-Q1 stale |
| LASRY MARC trimmed | 81,950 | $189K | 8.4% | 2025-Q3 stale |
| SOROS FUND MANAGEMENT LLC trimmed | 500,000 | $136K | 6.1% | 2025-Q1 stale |
| KINGDON CAPITAL MANAGEMENT, L.L.C. trimmed | 46,833 | $108K | 4.8% | 2025-Q3 stale |
| RENAISSANCE TECHNOLOGIES LLC added | 358,200 | $62K | 2.7% | 2025-Q2 stale |
| VANGUARD GROUP INC trimmed | 60,437 | $44K | 2.0% | 2025-Q4 stale |
| Alpine Global Management, LLC new | 10,667 | $25K | 1.1% | 2025-Q3 stale |
| STATE STREET CORP | 97,907 | $17K | 0.8% | 2025-Q2 stale |
| NORTHERN TRUST CORP | 97,509 | $17K | 0.7% | 2025-Q2 stale |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 44,306 | $8K | 0.3% | 2025-Q2 stale |
| Squarepoint Ops LLC trimmed | 38,028 | $7K | 0.3% | 2025-Q2 stale |
| FORBES J M & CO LLP | 35,020 | $6K | 0.3% | 2025-Q2 stale |
| CITIGROUP INC trimmed | 2,559 | $6K | 0.3% | 2025-Q3 stale |
| Kaye Capital Management new | 26,200 | $5K | 0.2% | 2025-Q2 stale |
| Modern Wealth Management, LLC new | 26,200 | $5K | 0.2% | 2025-Q2 stale |
| TRUIST FINANCIAL CORP | 24,000 | $4K | 0.2% | 2025-Q2 stale |
| Nordwand Advisors, LLC new | 15,000 | $4K | 0.2% | 2025-Q1 stale |
| Qube Research & Technologies Ltd trimmed | 18,196 | $3K | 0.1% | 2025-Q2 stale |
| Advisory Services Network, LLC trimmed | 1,136 | $3K | 0.1% | 2025-Q3 stale |
| Powell Investment Advisors, LLC | 14,010 | $2K | 0.1% | 2025-Q2 stale |
| Cambridge Investment Research Advisors, Inc. | 11,600 | $2K | 0.1% | 2025-Q2 stale |
| SIMPLEX TRADING, LLC added | 11,934 | $2K | 0.1% | 2025-Q2 stale |
| Wealthspire Advisors, LLC trimmed | 822 | $2K | 0.1% | 2025-Q3 stale |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | 10,000 | $2K | 0.1% | 2025-Q2 stale |
| RAYMOND JAMES FINANCIAL INC new | 5,393 | $929 | 0.0% | 2025-Q2 stale |
| Fortitude Family Office, LLC new | 603 | $438 | 0.0% | 2025-Q4 stale |
| Continuum Advisory, LLC added | 1,372 | $374 | 0.0% | 2025-Q1 stale |
| NewEdge Advisors, LLC | 457 | $332 | 0.0% | 2025-Q4 stale |
| BANK OF AMERICA CORP /DE/ trimmed | 68 | $49 | 0.0% | 2025-Q4 stale |
| Steward Partners Investment Advisory, LLC trimmed | 20 | $46 | 0.0% | 2025-Q3 stale |
| BARCLAYS PLC trimmed | 11 | $3 | 0.0% | 2025-Q1 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.