BUTTERFLY NETWORK INC BFLY
COM CL A · Common Stock · CUSIP 124155102 · ISIN US1241551027
- SectorHealth care
- IndustryX-Ray Apparatus & Tubes & Related Irradiation Apparatus
- HeadquartersBurlington, MA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($82.3k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $4.04. Options: 8 managers hold calls ($15.3m notional), 8 hold puts ($4.6m).
Trends to Q1 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 199 |
| Q4 2022 | 198 |
| Q1 2023 | 181 |
| Q2 2023 | 185 |
| Q3 2023 | 186 |
| Q4 2023 | 170 |
| Q1 2024 | 171 |
| Q2 2024 | 169 |
| Q3 2024 | 150 |
| Q4 2024 | 174 |
| Q1 2025 | 208 |
| Q2 2025 | 190 |
| Q3 2025 | 176 |
| Q4 2025 | 204 |
| Q1 2026 | 239 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 63 | 86 |
| Q3 2024 | 50 | 85 |
| Q4 2024 | 87 | 58 |
| Q1 2025 | 125 | 61 |
| Q2 2025 | 108 | 89 |
| Q3 2025 | 86 | 91 |
| Q4 2025 | 111 | 60 |
| Q1 2026 | 124 | 75 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $1.2m | $985.6k | 0.80 |
| Q3 2025 | $2.8m | $1.2m | 0.44 |
| Q4 2025 | $19.7m | $3.0m | 0.15 |
| Q1 2026 | $15.3m | $4.6m | 0.30 |
Biggest buyers
| Nuveen, LLC | Added | +3.2m |
| ALGERT GLOBAL LLC | Added | +2.3m |
| MARSHALL WACE, LLP | Added | +1.9m |
| BANK OF AMERICA CORP /DE/ | Added | +1.7m |
| Hood River Capital Management LLC | Added | +1.7m |
| JANE STREET GROUP, LLC | Added | +1.1m |
| D. E. Shaw & Co., Inc. | Added | +1.1m |
| AWM Investment Company, Inc. | Added | +1.0m |
| BlackRock, Inc. | Added | +1.0m |
| Jump Financial, LLC | New | +832.6k |
Biggest sellers
| ARK Investment Management LLC | Reduced | -1.0m |
| UBS Group AG | Reduced | -701.3k |
| MORGAN STANLEY | Reduced | -604.9k |
| HRT FINANCIAL LP | Sold out | -469.3k |
| CITADEL ADVISORS LLC | Reduced | -447.4k |
| Squarepoint Ops LLC | Reduced | -362.2k |
| CLOUGH CAPITAL PARTNERS L P | Sold out | -222.5k |
| Verition Fund Management LLC | Sold out | -172.4k |
| Stoic Point Capital Management LLC | Reduced | -167.0k |
| First Light Asset Management, LLC | Reduced | -152.0k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $7.9m2.0m shares |
| IMC-Chicago, LLC | Reduced | $1.6m398.6k shares |
| GROUP ONE TRADING LLC | Reduced | $1.6m394.5k shares |
| JANE STREET GROUP, LLC | Added | $1.5m365.4k shares |
| CITADEL ADVISORS LLC | Added | $1.2m286.3k shares |
| SIMPLEX TRADING, LLC | Added | $813.7k201.4k shares |
| PEAK6 LLC | New | $721.9k178.7k shares |
| Walleye Capital LLC | Reduced | $19.4k4.8k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $2.2m548.1k shares |
| CITADEL ADVISORS LLC | Added | $663.4k164.2k shares |
| GROUP ONE TRADING LLC | Added | $656.1k162.4k shares |
| IMC-Chicago, LLC | Reduced | $452.1k111.9k shares |
| SIMPLEX TRADING, LLC | Added | $291.7k72.2k shares |
| JANE STREET GROUP, LLC | Reduced | $139.0k34.4k shares |
| Walleye Capital LLC | Reduced | $100.6k24.9k shares |
| Walleye Trading LLC | Unchanged | $53.3k13.2k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
ROTHBERG JONATHAN M
13D · may seek influence
no change · filed 2026-08-17
Stated purposeItem 4 of the Schedule 13D is hereby amended and supplemented by adding the following: In connection with estate planning, Dr. Rothberg, acting on his own and on behalf of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, and Dr. Bonnie Rothberg, Dr. Rothberg's spouse, entered into a trading plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended (the "Plan"), a copy of which is attached hereto as Exhibit 6. Pursuant to the Plan, sales of up to 363,348 shares of Class A common stock and 8,049,929 shares of Class B common stock may be effected during the plan sales period beginning following the cooling-off period contained in Rule 10b5-1(c) and ending on November 12, 2027 in accordance with the terms and conditions of the Plan. … Full filing |
100.0% |
| FMR LLC 13G · institution new · filed 2026-08-07 | 11.8% |
| BlackRock, Inc. 13G · institution +1.5 pts · filed 2026-07-27 | 7.8% |
GLENVIEW CAPITAL MANAGEMENT, LLC
13D · may seek influence
-2.3 pts · filed 2026-08-17
Stated purposeItem 4 of the Schedule 13D is hereby amended and supplemented as follows: On June 22, 2026, Mr. Robbins was granted 25,447 shares of unvested restricted stock units, each representing the right to receive one share of Common Stock upon vesting, which vest in full on the date of the Issuer's 2027 Annual Stockholders Meeting, subject to Mr. Robbins' continued service on the Issuer's board of directors on such date. Full filing |
6.2% |
| Hood River Capital Management LLC 13G · institution new · filed 2026-08-14 | 5.6% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26), Fosun Industrial Co., Ltd (4.7%, 2026-02-05)
Insider purchases and sales in Q1 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2024 | 0 | — | 2 | $72.3k | — |
| Q3 2024 | 2 | $2.0m | 2 | $142.3k | — |
| Q4 2024 | 0 | — | 3 | $650.9k | — |
| Q1 2025 | 0 | — | 1 | $9.0k | — |
| Q2 2025 | 0 | — | 3 | $929.2k | — |
| Q3 2025 | 1 | $82.0k | 3 | $241.7k | — |
| Q4 2025 | 2 | $12.1m | 3 | $16.4m | $16.1m |
| Q1 2026 | 0 | — | 7 | $8.9m | $5.8m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-03-05 | DEVIVO JOSEPH President & CEO, director | Sold | $1.8m482.1k shares |
| 2026-03-03 | DEVIVO JOSEPH President & CEO, director | Sold | $598.3k161.3k shares |
| 2026-03-03 | Cashman Steve Chief Business Officer | Sold | $157.8k42.5k shares |
| 2026-03-03 | Carlson Megan CAO and SVP, Finance | Sold | $155.7k42.0k shares |
| 2026-03-03 | Caezza Nicholas Deputy General Counsel | Sold | $52.7k14.2k shares |
| 2026-02-26 | Cashman Steve Chief Business Officer | Sold plan | $1.1m250.0k shares |
| 2026-01-08 | ROTHBERG JONATHAN M Director · By JAR TR, LLC | Sold plan | $1.4m335.8k shares |
| 2026-01-07 | ROTHBERG JONATHAN M Director · By JAR TR, LLC | Sold plan | $1.9m452.7k shares |
| 2026-01-07 | Doherty John N. EVP, CFO | Sold | $239.5k60.2k shares |
| 2026-01-06 | ROTHBERG JONATHAN M Director · By JAR TR, LLC | Sold plan | $1.4m351.6k shares |
| 2026-01-05 | Ku Victor Chief Technology Officer | Sold | $137.4k36.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 16.0m $64.5m | Added +1.0m |
| GLENVIEW CAPITAL MANAGEMENT, LLC 1.57% of their portfolio | 14.3m $57.9m | Unchanged |
| Fosun International Ltd 10.86% of their portfolio | 10.7m $43.3m | Unchanged |
| Hood River Capital Management LLC 0.35% of their portfolio | 8.6m $34.8m | Added +1.7m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 8.2m $33.1m | First filing |
| STATE STREET CORP 0.00% of their portfolio | 5.5m $22.4m | Added +166.7k |
| ARK Investment Management LLC 0.16% of their portfolio | 5.2m $21.1m | Reduced -1.0m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 4.8m $19.4m | Added +130.0k |
| AWM Investment Company, Inc. 1.98% of their portfolio | 4.4m $17.9m | Added +1.0m |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 4.2m $16.8m | Added +1.7m |
| Nuveen, LLC 0.00% of their portfolio | 3.7m $15.1m | Added +3.2m |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 3.5m $14.1m | Added +314.8k |
| ALGERT GLOBAL LLC 0.16% of their portfolio | 2.7m $10.8m | Added +2.3m |
| First Light Asset Management, LLC 0.96% of their portfolio | 2.7m $10.7m | Reduced -152.0k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 2.4m $9.5m | Added +557.1k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 2.3m $9.3m | Added +539.2k |
| MARSHALL WACE, LLP 0.01% of their portfolio | 2.3m $9.2m | Added +1.9m |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 2.3m $9.1m | Added +611.3k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 1.9m $7.8m | Added +1.1m |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 1.8m $7.4m | First filing |
| MORGAN STANLEY 0.00% of their portfolio | 1.7m $7.0m | Reduced -604.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 1.7m $6.8m | Reduced -96.0k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 1.6m $6.3m | Added +82.1k |
| UBS Group AG 0.00% of their portfolio | 1.5m $5.9m | Reduced -701.3k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 1.4m $5.7m | First filing |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 1.1m $4.5m | Added +1.1m |
| PERKINS CAPITAL MANAGEMENT INC 3.52% of their portfolio | 930.9k $3.8m | Added +7.2k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 896.7k $3.6m | Added +74.1k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 852.2k $3.4m | Reduced -110.2k |
| Jump Financial, LLC 0.05% of their portfolio | 832.6k $3.4m | New |
| DNB Asset Management AS 0.01% of their portfolio | 780.3k $3.2m | Unchanged |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 757.2k $3.1m | Added +736.8k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 719.0k $2.8m | Reduced -44.3k |
| ISTHMUS PARTNERS, LLC 0.29% of their portfolio | 689.2k $2.8m | Unchanged |
| CITIGROUP INC 0.00% of their portfolio | 593.9k $2.4m | Added +313.3k |
| Stoic Point Capital Management LLC 2.32% of their portfolio | 582.9k $2.4m | Reduced -167.0k |
| Parkman Healthcare Partners LLC 0.23% of their portfolio | 544.5k $2.2m | Added +443.6k |
| BARCLAYS PLC 0.00% of their portfolio | 486.1k $2.0m | Added +145.3k |
| Gotham Asset Management, LLC 0.01% of their portfolio | 462.2k $1.9m | Added +233.2k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 447.6k $1.8m | Reduced -48.1k |
| FMR LLC 0.00% of their portfolio | 440.0k $1.8m | Added +392.8k |
| TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio | 431.5k $1.7m | New |
| POLEN CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 406.3k $1.6m | Reduced -66.7k |
| Invesco Ltd. 0.00% of their portfolio | 406.2k $1.6m | Added +18.3k |
| Swiss National Bank 0.00% of their portfolio | 401.2k $1.6m | New |
| Voleon Capital Management LP 0.03% of their portfolio | 393.7k $1.6m | Added +168.0k |
| Palumbo Wealth Management LLC 0.36% of their portfolio | 360.3k $1.5m | Reduced -53.0k |
| Squarepoint Ops LLC 0.00% of their portfolio | 354.6k $1.4m | Reduced -362.2k |
| OPPENHEIMER & CO INC 0.02% of their portfolio | 328.3k $1.3m | Reduced -2.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 328.1k $1.3m | New |
| Manatuck Hill Partners, LLC 0.40% of their portfolio | 300.0k $1.2m | New |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 282.1k $1.1m | Reduced -4.4k |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 268.1k $1.1m | Added +186.8k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 254.3k $1.0m | Added +5.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 240.5k $971.5k | Added +205.8k |
| LPL Financial LLC 0.00% of their portfolio | 235.0k $949.3k | Added +9.4k |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd 0.07% of their portfolio | 231.6k $935.7k | Added +1.3k |
| XTX Topco Ltd 0.02% of their portfolio | 229.6k $927.7k | Added +92.4k |
| Aquatic Capital Management LLC 0.03% of their portfolio | 226.2k $914.0k | New |
| CloudAlpha Capital Management Limited/Hong Kong 0.10% of their portfolio | 218.0k $880.7k | New |
| SIT INVESTMENT ASSOCIATES INC 0.02% of their portfolio | 210.8k $851.0k | New |
| Quent Capital, LLC 0.06% of their portfolio | 208.5k $842.3k | Added +25.0k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 188.8k $717.4k | Reduced -3.2k |
| Green Alpha Advisors, LLC 0.68% of their portfolio | 169.9k $686.5k | Reduced -6.4k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 149.7k $604.8k | Added +14.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 149.5k $605.0k | Added +33.1k |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 147.0k $593.8k | Reduced -8.8k |
| Pathstone Holdings, LLC 0.00% of their portfolio | 143.6k $580.0k | Reduced -1.7k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 140.8k $568.8k | Added +71.5k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 136.8k $552.6k | First filing |
| Legal & General Group Plc 0.00% of their portfolio | 135.2k $546.2k | Added +93.0k |
| Counterpoint Mutual Funds LLC 0.08% of their portfolio | 135.0k $545.2k | New |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 130.0k $525.2k | New |
| SBI Securities Co., Ltd. 0.01% of their portfolio | 120.0k $484.9k | Reduced -18.8k |
| TOCQUEVILLE ASSET MANAGEMENT L.P. 0.01% of their portfolio | 114.5k $462.6k | Added +84.5k |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 110.6k $446.3k | New |
| MetLife Investment Management, LLC 0.00% of their portfolio | 107.5k $434.4k | Added +17.6k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 104.4k $421.9k | Added +40.1k |
| Man Group plc 0.00% of their portfolio | 95.6k $386.2k | New |
| GROUP ONE TRADING LLC 0.01% of their portfolio | 94.5k $381.7k | New |
| GILDER GAGNON HOWE & CO LLC 0.00% of their portfolio | 92.9k $375.3k | New |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 91.8k $370.9k | Added +792 |
| Graham Capital Management, L.P. 0.01% of their portfolio | 90.0k $363.6k | New |
| Keenan, LLC 0.30% of their portfolio | 89.2k $360.3k | Unchanged |
| GSA CAPITAL PARTNERS LLP 0.02% of their portfolio | 87.4k $353.0k | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 83.4k $337.1k | Added +20.0k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 82.8k $334.4k | First filing |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 79.6k $321.7k | Reduced -10.3k |
| BLAIR WILLIAM & CO/IL 0.00% of their portfolio | 79.5k $321.2k | Reduced -50.0k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 78.8k $318.4k | Reduced -143.2k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 77.5k $313.2k | Reduced -1.9k |
| Procyon Advisors, LLC 0.02% of their portfolio | 77.4k $312.6k | Unchanged |
| Integrated Quantitative Investments LLC 0.06% of their portfolio | 77.3k $312.2k | New |
| LEVIN CAPITAL STRATEGIES, L.P. 0.02% of their portfolio | 75.0k $303.0k | New |
| Permanent Capital Management, LP 0.06% of their portfolio | 75.0k $359.2k | New |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 67.1k $271.2k | Reduced -43.9k |
| nVerses Capital, LLC 0.24% of their portfolio | 66.6k $269.2k | New |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 63.1k $254.7k | Added +50.6k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 60.8k $245.6k | Unchanged |
| STIFEL FINANCIAL CORP 0.00% of their portfolio | 60.6k $244.9k | Added +6.1k |