Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in BFLY held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 16.0M | $64.5M | +6.9% | 6.100% | 0.00% |
| 2 | GLENVIEW CAPITAL MANAGEMENT, LLC | 14.3M | $57.9M | 0.0% | 5.479% | 1.56% |
| 3 | Fosun International Ltd | 10.7M | $43.3M | 0.0% | 4.096% | 10.86% |
| 4 | Hood River Capital Management LLC | 8.6M | $34.8M | +24.0% | 3.295% | 0.35% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 8.2M | $33.1M | — | 3.131% | 0.00% |
| 6 | STATE STREET CORP | 5.5M | $22.4M | +3.1% | 2.117% | 0.00% |
| 7 | ARK Investment Management LLC | 5.2M | $21.1M | -16.3% | 1.998% | 0.16% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 4.8M | $19.4M | +2.8% | 1.838% | 0.00% |
| 9 | AWM Investment Company, Inc. | 4.4M | $17.9M | +30.3% | 1.693% | 1.98% |
| 10 | BANK OF AMERICA CORP /DE/ | 4.2M | $16.8M | +71.0% | 1.592% | 0.00% |
| 11 | Nuveen, LLC | 3.7M | $15.1M | +579.2% | 1.433% | 0.00% |
| 12 | MILLENNIUM MANAGEMENT LLC | 3.5M | $14.1M | +9.9% | 1.333% | 0.01% |
| 13 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 2.7M | $11.1M | +3.5% | 1.049% | 0.00% |
| 14 | First Light Asset Management, LLC | 2.7M | $10.7M | -5.4% | 1.017% | 0.96% |
| 15 | DIMENSIONAL FUND ADVISORS LP | 2.4M | $9.5M | +30.9% | 0.901% | 0.00% |
| 16 | SEI INVESTMENTS CO | 2.3M | $9.3M | +30.6% | 0.879% | 0.01% |
| 17 | MARSHALL WACE, LLP | 2.3M | $9.2M | +444.3% | 0.873% | 0.01% |
| 18 | DEUTSCHE BANK AG\ | 2.3M | $9.1M | +37.0% | 0.865% | 0.00% |
| 19 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.8M | $7.4M | — | 0.702% | 0.00% |
| 20 | MORGAN STANLEY | 1.7M | $7.0M | -26.0% | 0.658% | 0.00% |
| 21 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.7M | $6.8M | -5.4% | 0.641% | 0.00% |
| 22 | NORTHERN TRUST CORP | 1.6M | $6.3M | +5.6% | 0.594% | 0.00% |
| 23 | UBS Group AG | 1.5M | $5.9M | -32.3% | 0.562% | 0.00% |
| 24 | VANGUARD FIDUCIARY TRUST CO | 1.4M | $5.7M | — | 0.539% | 0.00% |
| 25 | D. E. Shaw & Co., Inc. | 1.1M | $4.5M | +1577.3% | 0.428% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in BFLY — a direct measure of their conviction.
Filings activity in BFLY during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 235 | +19% | 37.86% | +5.54 pp | $549M | +17% |
| Q4 2025 | 198 | +15% | 32.32% | +19.36 pp | $469M | +149% |
| Q3 2025 | 172 | 7.5% | 12.96% | 2.77 pp | $188M | 18% |
| Q2 2025 | 186 | 8.4% | 15.73% | +0.76 pp | $228M | +5.0% |
| Q1 2025 | 203 | +20% | 14.97% | 0.09 pp | $217M | 0.6% |
| Q4 2024 | 169 | +15% | 15.06% | +8.07 pp | $218M | +116% |
| Q3 2024 | 147 | 10% | 6.99% | +1.63 pp | $101M | +30% |
| Q2 2024 | 164 | — | 5.36% | — | $78M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying BFLY stock.
Based on Q1 2026 13F filings, institutional ownership of Butterfly Network, Inc. stands at 37.9%, held across 235 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of BFLY, with approximately 15,961,480 shares worth $0.06B as of Q1 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of BFLY, including ARK Investment Management LLC, MILLENNIUM MANAGEMENT LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for BFLY is 81 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
62 institutions opened new positions in BFLY during Q1 2026, while 25 fully exited. 132 added to existing positions and 38 trimmed.
BFLY institutional ownership rose by 5.54 percentage points quarter-over-quarter, with a net change of +37 holders.
The top 10 institutions account for 60.4% of all reported 13F value in BFLY, and the top 25 account for 84.4%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Butterfly Network, Inc. (BFLY) Institutional Ownership