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 ($934.0k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $8.42. Options: 12 managers hold calls ($42.5m notional), 9 hold puts ($12.0m).
Trends to Q2 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 |
| Q2 2026 | 245 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| 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 |
| Q2 2026 | 143 | 94 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $2.8m | $1.2m | 0.44 |
| Q4 2025 | $19.7m | $3.0m | 0.15 |
| Q1 2026 | $15.3m | $4.6m | 0.30 |
| Q2 2026 | $42.5m | $12.0m | 0.28 |
Biggest buyers
| D. E. Shaw & Co., Inc. | Added | +5.3m |
| Hood River Capital Management LLC | Added | +4.6m |
| FMR LLC | Added | +4.5m |
| BlackRock, Inc. | Added | +2.9m |
| GOLDMAN SACHS GROUP INC | Added | +1.9m |
| KINGDON CAPITAL MANAGEMENT, L.L.C. | New | +1.7m |
| Nuveen, LLC | Added | +1.3m |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | New | +1.1m |
| ExodusPoint Capital Management, LP | New | +761.9k |
| GILDER GAGNON HOWE & CO LLC | Added | +710.9k |
Biggest sellers
| BANK OF AMERICA CORP /DE/ | Reduced | -2.0m |
| JANE STREET GROUP, LLC | Sold out | -1.9m |
| MARSHALL WACE, LLP | Reduced | -1.8m |
| MILLENNIUM MANAGEMENT LLC | Reduced | -1.3m |
| ALGERT GLOBAL LLC | Reduced | -847.6k |
| MORGAN STANLEY | Reduced | -592.3k |
| Jump Financial, LLC | Reduced | -552.9k |
| Parkman Healthcare Partners LLC | Sold out | -544.5k |
| Fosun International Ltd | Reduced | -481.7k |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -411.7k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $13.9m1.7m shares |
| JANE STREET GROUP, LLC | Added | $8.5m1.0m shares |
| PEAK6 LLC | Added | $4.8m565.5k shares |
| IMC-Chicago, LLC | Added | $4.2m500.7k shares |
| CITADEL ADVISORS LLC | Added | $3.7m434.7k shares |
| GROUP ONE TRADING LLC | Reduced | $3.3m387.9k shares |
| SIMPLEX TRADING, LLC | Added | $2.4m282.2k shares |
| Walleye Capital LLC | Added | $815.1k96.8k shares |
| Symmetry Investments LP | New | $673.6k80.0k shares |
| HRT FINANCIAL LP | New | $186.0k22.1k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $3.6m428.9k shares |
| JANE STREET GROUP, LLC | Added | $2.7m322.9k shares |
| CITADEL ADVISORS LLC | Added | $2.0m234.2k shares |
| SIMPLEX TRADING, LLC | Added | $1.2m145.3k shares |
| IMC-Chicago, LLC | Reduced | $785.6k93.3k shares |
| GROUP ONE TRADING LLC | Reduced | $665.2k79.0k shares |
| Walleye Capital LLC | Added | $431.9k51.3k shares |
| HRT FINANCIAL LP | New | $354.0k42.1k shares |
| Walleye Trading LLC | Added | $219.8k26.1k 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 since 1 Apr 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 |
|---|---|---|---|---|---|
| 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 |
| Q2 2026 | 0 | — | 3 | $4.2m | $1.0m |
| Q3 2026 | 1 | $999.9k | 8 | $96.2m | $55.1m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-23 | DEVIVO JOSEPH President & CEO, director | Sold plan | $31.8k3.2k shares |
| 2026-09-22 | DEVIVO JOSEPH President & CEO, director | Sold plan | $28.1k2.8k shares |
| 2026-09-04 | Cashman Steve Chief Business Officer | Sold | $1.0m140.1k shares |
| 2026-09-04 | Carlson Megan CAO and SVP, Finance | Sold | $100.8k13.8k shares |
| 2026-09-02 | Caezza Nicholas Deputy General Counsel | Sold | $13.9k1.7k shares |
| 2026-08-17 | ROBBINS LARRY Director · See footnotes | Sold | $5.2m582.5k shares |
| 2026-08-14 | ROBBINS LARRY Director · See footnotes | Sold | $7.2m824.7k shares |
| 2026-08-14 | Phanstiel S. Louise Director · By The Phanstiel Trust u/a/d 2/5/02 | Bought | $999.9k115.2k shares |
| 2026-08-13 | ROBBINS LARRY Director · See footnotes | Sold | $8.2m890.5k shares |
| 2026-08-11 | Caezza Nicholas Deputy General Counsel | Sold | $97.5k10.0k shares |
| 2026-08-10 | DEVIVO JOSEPH President & CEO, director | Sold plan | $684.1k68.3k shares |
| 2026-08-03 | ROBBINS LARRY Director · See footnotes | Sold | $1.3m156.2k shares |
| 2026-07-31 | ROBBINS LARRY Director · See footnotes | Sold | $12.7m1.7m shares |
| 2026-07-31 | Carlson Megan CAO and SVP, Finance | Sold | $541.2k68.9k shares |
| 2026-07-22 | ROTHBERG JONATHAN M Director · By EJR TR, LLC | Sold plan | $3.2m496.7k shares |
| 2026-07-22 | ROTHBERG JONATHAN M Director · By NVR TR, LLC | Sold plan | $470.5k72.7k shares |
| 2026-07-22 | ROTHBERG JONATHAN M Director · By GBR TR, LLC | Sold plan | $350.3k54.1k shares |
| 2026-07-22 | ROTHBERG JONATHAN M Director · By JNR TR, LLC | Sold plan | $235.3k36.4k shares |
| 2026-07-21 | ROTHBERG JONATHAN M Director · By EJR TR, LLC | Sold plan | $5.1m753.3k shares |
| 2026-07-20 | ROTHBERG JONATHAN M Director · By NVR TR, LLC | Sold plan | $7.8m1.2m shares |
| 2026-07-20 | DEVIVO JOSEPH President & CEO, director | Sold | $1.4m211.8k shares |
| 2026-07-20 | Doherty John N. EVP, CFO | Sold | $374.8k57.1k shares |
| 2026-07-20 | Ku Victor Chief Technology Officer | Sold | $318.4k48.5k shares |
| 2026-07-17 | ROTHBERG JONATHAN M Director · By GBR TR, LLC | Sold plan | $7.9m1.2m shares |
| 2026-07-16 | ROTHBERG JONATHAN M Director | Sold plan | $8.6m1.2m shares |
| 2026-07-16 | ROTHBERG JONATHAN M Director | Sold plan | $1.8m253.9k shares |
| 2026-07-15 | ROTHBERG JONATHAN M Director | Sold plan | $12.7m1.7m shares |
| 2026-07-14 | ROTHBERG JONATHAN M Director | Sold plan | $6.3m815.6k shares |
| 2026-07-07 | DEVIVO JOSEPH President & CEO, director | Sold | $1.6m204.7k shares |
| 2026-07-07 | Doherty John N. EVP, CFO | Sold | $434.7k55.2k shares |
The latest 30 of 38 trades.
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, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 18.8m $158.5m | Added +2.9m |
| GLENVIEW CAPITAL MANAGEMENT, LLC 2.41% of their portfolio | 14.3m $120.7m | Unchanged |
| Hood River Capital Management LLC 0.81% of their portfolio | 13.2m $111.1m | Added +4.6m |
| Fosun International Ltd 19.31% of their portfolio | 10.2m $86.2m | Reduced -481.7k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 8.6m $72.1m | Added +367.2k |
| D. E. Shaw & Co., Inc. 0.03% of their portfolio | 6.4m $53.8m | Added +5.3m |
| STATE STREET CORP 0.00% of their portfolio | 5.8m $48.5m | Added +223.0k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 5.3m $45.0m | Added +536.6k |
| ARK Investment Management LLC 0.28% of their portfolio | 5.1m $42.8m | Reduced -142.0k |
| Nuveen, LLC 0.01% of their portfolio | 5.1m $42.6m | Added +1.3m |
| FMR LLC 0.00% of their portfolio | 4.9m $41.3m | Added +4.5m |
| AWM Investment Company, Inc. 3.24% of their portfolio | 4.4m $37.3m | Unchanged |
| SEI INVESTMENTS CO 0.02% of their portfolio | 2.9m $24.7m | Added +639.0k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 2.8m $23.3m | Added +1.9m |
| First Light Asset Management, LLC 1.35% of their portfolio | 2.6m $22.2m | Reduced -17.8k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 2.6m $21.7m | Added +316.9k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 2.4m $20.1m | Added +545.4k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 2.2m $18.1m | Reduced -1.3m |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 2.1m $18.0m | Reduced -2.0m |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 1.9m $16.4m | Reduced -411.7k |
| ALGERT GLOBAL LLC 0.18% of their portfolio | 1.8m $15.3m | Reduced -847.6k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 1.8m $15.0m | Added +101.0k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 1.8m $14.9m | Added +210.0k |
| KINGDON CAPITAL MANAGEMENT, L.L.C. 1.93% of their portfolio | 1.7m $14.3m | New |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 1.5m $12.7m | Added +94.5k |
| UBS Group AG 0.00% of their portfolio | 1.4m $11.8m | Reduced -63.9k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 1.4m $11.6m | Added +615.8k |
| MORGAN STANLEY 0.00% of their portfolio | 1.1m $9.5m | Reduced -592.3k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.04% of their portfolio | 1.1m $9.1m | New |
| PERKINS CAPITAL MANAGEMENT INC 5.49% of their portfolio | 867.6k $7.3m | Reduced -63.4k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 864.8k $7.3m | Reduced -31.9k |
| GILDER GAGNON HOWE & CO LLC 0.07% of their portfolio | 803.8k $6.8m | Added +710.9k |
| ExodusPoint Capital Management, LP 0.06% of their portfolio | 761.9k $6.4m | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 689.7k $6.1m | Reduced -29.3k |
| Invesco Ltd. 0.00% of their portfolio | 676.9k $5.7m | Added +270.7k |
| TUDOR INVESTMENT CORP ET AL 0.02% of their portfolio | 631.0k $5.3m | Added +199.4k |
| Calamos Advisors LLC 0.02% of their portfolio | 584.1k $4.9m | New |
| Bank of New York Mellon Corp 0.00% of their portfolio | 579.4k $4.9m | Added +131.8k |
| ISTHMUS PARTNERS, LLC 0.46% of their portfolio | 564.2k $4.8m | Reduced -125.0k |
| DNB Asset Management AS 0.01% of their portfolio | 557.4k $4.7m | Reduced -222.9k |
| Palumbo Wealth Management LLC 0.95% of their portfolio | 536.5k $4.5m | Added +176.1k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 523.5k $4.4m | Added +419.1k |
| POLEN CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 480.5k $4.0m | Added +74.2k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 463.1k $3.9m | Reduced -1.8m |
| Gotham Asset Management, LLC 0.01% of their portfolio | 462.2k $3.9m | Unchanged |
| Squarepoint Ops LLC 0.01% of their portfolio | 450.4k $3.8m | Added +95.8k |
| Stoic Point Capital Management LLC 2.65% of their portfolio | 374.2k $3.2m | Reduced -208.6k |
| Swiss National Bank 0.00% of their portfolio | 354.9k $3.0m | Reduced -46.3k |
| OPPENHEIMER & CO INC 0.03% of their portfolio | 328.3k $2.8m | Unchanged |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 300.5k $2.5m | Added +18.4k |
| CITIGROUP INC 0.00% of their portfolio | 294.8k $2.5m | Reduced -299.0k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 290.3k $2.4m | Added +36.0k |
| Jump Financial, LLC 0.02% of their portfolio | 279.7k $2.4m | Reduced -552.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 265.2k $2.2m | Added +243.6k |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd 0.14% of their portfolio | 254.6k $2.1m | Added +23.0k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 232.5k $2.0m | Added +221.9k |
| Quent Capital, LLC 0.11% of their portfolio | 208.5k $1.8m | Unchanged |
| LPL Financial LLC 0.00% of their portfolio | 204.6k $1.7m | Reduced -30.4k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 200.9k $1.7m | Added +117.4k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 199.9k $1.7m | Added +121.1k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 193.0k $1.6m | Added +43.3k |
| Man Group plc 0.00% of their portfolio | 191.2k $1.6m | Added +95.6k |
| GROUP ONE TRADING LLC 0.05% of their portfolio | 189.4k $1.6m | Added +95.0k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 188.8k $762.8k | Unchanged |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 175.2k $1.5m | Added +25.6k |
| TOCQUEVILLE ASSET MANAGEMENT L.P. 0.02% of their portfolio | 174.8k $1.5m | Added +60.3k |
| Allspring Global Investments Holdings, LLC 0.00% of their portfolio | 174.2k $1.4m | New |
| Green Alpha Advisors, LLC 0.95% of their portfolio | 168.7k $1.4m | Reduced -1.3k |
| Lotus Technology Management, LP 1.69% of their portfolio | 163.7k $1.4m | New |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 161.2k $1.4m | Added +131.0k |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 160.0k $1.3m | Added +139.3k |
| Voleon Capital Management LP 0.02% of their portfolio | 150.0k $1.3m | Reduced -243.7k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 149.1k $1.3m | Added +57.3k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 146.9k $1.2m | Added +64.2k |
| SIT INVESTMENT ASSOCIATES INC 0.02% of their portfolio | 146.4k $1.2m | Reduced -64.3k |
| FirstWave Capital Management LLC 0.54% of their portfolio | 145.4k $1.2m | New |
| Pathstone Holdings, LLC 0.00% of their portfolio | 145.2k $1.2m | Added +1.7k |
| Legal & General Group Plc 0.00% of their portfolio | 144.3k $1.2m | Added +9.1k |
| FRED ALGER MANAGEMENT, LLC 0.00% of their portfolio | 142.5k $1.2m | New |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 136.8k $1.2m | Unchanged |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 135.2k $1.1m | Reduced -11.8k |
| Counterpoint Mutual Funds LLC 0.11% of their portfolio | 135.0k $1.1m | Unchanged |
| MetLife Investment Management, LLC 0.00% of their portfolio | 123.7k $1.0m | Added +16.2k |
| XTX Topco Ltd 0.01% of their portfolio | 122.7k $1.0m | Reduced -107.0k |
| Verition Fund Management LLC 0.01% of their portfolio | 121.6k $1.0m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 115.2k $970.2k | Reduced -212.9k |
| Jupiter Topco LLC 0.00% of their portfolio | 110.6k $930.7k | First filing |
| DAVENPORT & Co LLC 0.00% of their portfolio | 109.9k $925.4k | New |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 108.9k $917.3k | Reduced -21.1k |
| Schonfeld Strategic Advisors LLC 0.00% of their portfolio | 106.3k $895.1k | Reduced -161.8k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 102.4k $862.4k | Added +22.8k |
| Quantinno Capital Management LP 0.00% of their portfolio | 100.1k $842.7k | Added +82.0k |
| SBI Securities Co., Ltd. 0.02% of their portfolio | 99.8k $840.4k | Reduced -20.2k |
| BARCLAYS PLC 0.00% of their portfolio | 99.6k $838.7k | Reduced -386.5k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 95.8k $806.6k | Added +81.5k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 93.8k $790.0k | New |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.00% of their portfolio | 90.9k $765.8k | New |
| Graham Capital Management, L.P. 0.02% of their portfolio | 90.0k $757.9k | Unchanged |
| GSA CAPITAL PARTNERS LLP 0.05% of their portfolio | 86.4k $728.0k | Reduced -944 |
| Walleye Trading LLC 0.01% of their portfolio | 85.2k $717.3k | Added +82.0k |