Who owns Butterfly Network (BFLY)
Which tracked institutional funds hold BFLY, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See BFLY company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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 BFLY is one-sided between 2026-Q1 and 2026-Q2: 109 added or opened and 13 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
BFLY’s largest tracked holder by dollar value, BlackRock, Inc., 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 gap the other way — the median holder sizes BFLY more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in BFLY 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 233 tracked filers holding BFLY, 137 increased or opened the position and 106 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 BFLY 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.
New buyers 19
- KINGDON CAPITAL MANAGEMENT, L.L.C.$14M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$9M
- ExodusPoint Capital Management, LP$6M
- Calamos Advisors LLC$5M
- Allspring Global Investments Holdings, LLC$1M
- Lotus Technology Management, LP$1M
Full exits 7
- JANE STREET GROUP, LLC$8M
- Parkman Healthcare Partners LLC$2M
- Manatuck Hill Partners, LLC$1M
- Aquatic Capital Management LLC$914K
- CloudAlpha Capital Management Limited/Hong Kong$881K
- SIT INVESTMENT ASSOCIATES INC$851K
Largest adds
- BlackRock, Inc.$94M
- Hood River Capital Management LLC$76M
- GLENVIEW CAPITAL MANAGEMENT, LLC$63M
- D. E. Shaw & Co., Inc.$49M
- Fosun International Ltd$43M
- FMR LLC$40M
Largest trims
- MARSHALL WACE, LLP$5M
- BARCLAYS PLC$1M
- Jump Financial, LLC$1M
- UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$355K
- Voleon Capital Management LP$327K
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$319K
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 18,821,463 | $158M | 12.2% | 2026-Q2 |
| GLENVIEW CAPITAL MANAGEMENT, LLC | 14,335,055 | $121M | 9.3% | 2026-Q2 |
| Hood River Capital Management LLC added | 13,190,130 | $111M | 8.5% | 2026-Q2 |
| Fosun International Ltd trimmed | 10,234,923 | $86M | 6.6% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 8,559,346 | $72M | 5.5% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 6,392,827 | $54M | 4.1% | 2026-Q2 |
| STATE STREET CORP added | 5,762,672 | $49M | 3.7% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 5,345,672 | $45M | 3.5% | 2026-Q2 |
| ARK Investment Management LLC trimmed | 5,085,456 | $43M | 3.3% | 2026-Q2 |
| Nuveen, LLC added | 5,056,372 | $43M | 3.3% | 2026-Q2 |
| FMR LLC added | 4,910,388 | $41M | 3.2% | 2026-Q2 |
| AWM Investment Company, Inc. | 4,430,593 | $37M | 2.9% | 2026-Q2 |
| SEI INVESTMENTS CO added | 2,937,872 | $25M | 1.9% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 2,761,860 | $23M | 1.8% | 2026-Q2 |
| First Light Asset Management, LLC trimmed | 2,642,404 | $22M | 1.7% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 2,580,435 | $22M | 1.7% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 2,382,239 | $20M | 1.5% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 2,154,551 | $18M | 1.4% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 2,138,268 | $18M | 1.4% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 1,946,435 | $16M | 1.3% | 2026-Q2 |
| ALGERT GLOBAL LLC trimmed | 1,814,447 | $15M | 1.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 1,777,614 | $15M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP added | 1,765,235 | $15M | 1.1% | 2026-Q2 |
| KINGDON CAPITAL MANAGEMENT, L.L.C. new | 1,700,000 | $14M | 1.1% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 1,503,621 | $13M | 1.0% | 2026-Q2 |
| UBS Group AG trimmed | 1,405,893 | $12M | 0.9% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 1,373,045 | $12M | 0.9% | 2026-Q2 |
| MORGAN STANLEY trimmed | 1,128,702 | $10M | 0.7% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC new | 1,077,227 | $9M | 0.7% | 2026-Q2 |
| PERKINS CAPITAL MANAGEMENT INC trimmed | 867,580 | $7M | 0.6% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 864,834 | $7M | 0.6% | 2026-Q2 |
| GILDER GAGNON HOWE & CO LLC added | 803,792 | $7M | 0.5% | 2026-Q2 |
| ExodusPoint Capital Management, LP added | 761,861 | $6M | 0.5% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 689,672 | $6M | 0.5% | 2026-Q2 |
| Invesco Ltd. added | 676,885 | $6M | 0.4% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL added | 630,954 | $5M | 0.4% | 2026-Q2 |
| Calamos Advisors LLC added | 584,090 | $5M | 0.4% | 2026-Q2 |
| Bank of New York Mellon Corp added | 579,369 | $5M | 0.4% | 2026-Q2 |
| ISTHMUS PARTNERS, LLC trimmed | 564,222 | $5M | 0.4% | 2026-Q2 |
| DNB Asset Management AS trimmed | 557,418 | $5M | 0.4% | 2026-Q2 |
| Palumbo Wealth Management LLC added | 536,472 | $5M | 0.3% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 523,518 | $4M | 0.3% | 2026-Q2 |
| POLEN CAPITAL MANAGEMENT LLC added | 480,502 | $4M | 0.3% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 463,058 | $4M | 0.3% | 2026-Q2 |
| Gotham Asset Management, LLC | 462,155 | $4M | 0.3% | 2026-Q2 |
| Squarepoint Ops LLC added | 450,401 | $4M | 0.3% | 2026-Q2 |
| Stoic Point Capital Management LLC trimmed | 374,237 | $3M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 354,900 | $3M | 0.2% | 2026-Q2 |
| OPPENHEIMER & CO INC | 328,310 | $3M | 0.2% | 2026-Q2 |
| CAPTRUST FINANCIAL ADVISORS added | 300,511 | $3M | 0.2% | 2026-Q2 |
| CITIGROUP INC trimmed | 294,845 | $2M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 290,307 | $2M | 0.2% | 2026-Q2 |
| Jump Financial, LLC trimmed | 279,708 | $2M | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 265,165 | $2M | 0.2% | 2026-Q2 |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd added | 254,635 | $2M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 232,533 | $2M | 0.2% | 2026-Q2 |
| Quent Capital, LLC | 208,500 | $2M | 0.1% | 2026-Q2 |
| LPL Financial LLC trimmed | 204,554 | $2M | 0.1% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) added | 200,856 | $2M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 199,933 | $2M | 0.1% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 192,986 | $2M | 0.1% | 2026-Q2 |
| Man Group plc added | 191,191 | $2M | 0.1% | 2026-Q2 |
| GROUP ONE TRADING LLC added | 189,442 | $2M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. | 188,800 | $763K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 175,183 | $1M | 0.1% | 2026-Q2 |
| TOCQUEVILLE ASSET MANAGEMENT L.P. added | 174,800 | $1M | 0.1% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC new | 174,183 | $1M | 0.1% | 2026-Q2 |
| Green Alpha Advisors, LLC trimmed | 168,668 | $1M | 0.1% | 2026-Q2 |
| Lotus Technology Management, LP new | 163,669 | $1M | 0.1% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC added | 161,160 | $1M | 0.1% | 2026-Q2 |
| Voleon Capital Management LP trimmed | 150,036 | $1M | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 149,108 | $1M | 0.1% | 2026-Q2 |
| Vanguard Global Advisers, LLC added | 146,933 | $1M | 0.1% | 2026-Q2 |
| FirstWave Capital Management LLC new | 145,398 | $1M | 0.1% | 2026-Q2 |
| Pathstone Holdings, LLC added | 145,240 | $1M | 0.1% | 2026-Q2 |
| Legal & General Group Plc added | 144,302 | $1M | 0.1% | 2026-Q2 |
| FRED ALGER MANAGEMENT, LLC trimmed | 142,524 | $1M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd | 136,792 | $1M | 0.1% | 2026-Q2 |
| COMMONWEALTH EQUITY SERVICES, LLC trimmed | 135,206 | $1M | 0.1% | 2026-Q2 |
| Counterpoint Mutual Funds LLC | 134,954 | $1M | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 123,684 | $1M | 0.1% | 2026-Q2 |
| XTX Topco Ltd trimmed | 122,659 | $1M | 0.1% | 2026-Q2 |
| Verition Fund Management LLC trimmed | 121,581 | $1M | 0.1% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 115,220 | $970K | 0.1% | 2026-Q2 |
| Jupiter Topco LLC new | 110,600 | $931K | 0.1% | 2026-Q2 |
| DAVENPORT & Co LLC new | 109,900 | $925K | 0.1% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 108,942 | $917K | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC trimmed | 106,308 | $895K | 0.1% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 102,421 | $862K | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP added | 100,080 | $843K | 0.1% | 2026-Q2 |
| SBI Securities Co., Ltd. trimmed | 99,814 | $840K | 0.1% | 2026-Q2 |
| BARCLAYS PLC trimmed | 99,604 | $839K | 0.1% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 95,792 | $807K | 0.1% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 93,822 | $790K | 0.1% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ new | 90,945 | $766K | 0.1% | 2026-Q2 |
| Graham Capital Management, L.P. | 90,010 | $758K | 0.1% | 2026-Q2 |
| Walleye Trading LLC added | 85,194 | $717K | 0.1% | 2026-Q2 |
| DARK FOREST CAPITAL MANAGEMENT LP added | 84,477 | $711K | 0.1% | 2026-Q2 |
| STRS OHIO new | 83,100 | $700K | 0.1% | 2026-Q2 |
| STIFEL FINANCIAL CORP added | 80,141 | $675K | 0.1% | 2026-Q2 |
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.