908 DevicesMASS
13F holders, Q1 2026 (March 31)112holders −6
7new positions
16sold out
5famous investors
$6.12avg. 13F price*
At the end of Q1 2026, 112 institutions reported holding 908 Devices Inc. (MASS) in their 13F filings, down 6 from Q4 2025. 7 opened new positions and 16 sold out. The largest holders were First Light Asset Management, LLC ($37.2M), AWM Investment Company, Inc. ($31.8M) and ARK Investment Management ($11.9M). 5 famous investors held it, including Cathie Wood (0.1% of ARK Investment Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- 908 Devices Inc.
- CUSIP
- 65443P102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 7 | $892K |
| Exits | 16 | $3.2M |
All 13F filers, Q4 2025 → Q1 2026: 3,216,866 shares bought and 1,432,556 shares sold, net +1,784,310 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 112 holders
| First Light Asset Management, LLC | 3.33% | Add +25.6% | 6,072,563 | $37.2M |
| AWM Investment Company, Inc. | 3.52% | No change | 5,199,924 | $31.8M |
| ARK Investment Management | 0.09% | Reduce -2.0% | 1,946,685 | $11.9M |
| BlackRock, Inc. | 0.00% | Reduce -1.9% | 1,767,316 | $10.8M |
| Needham Investment Management LLC | 0.39% | Add +61.0% | 1,240,000 | $7.6M |
| Vanguard Capital Management LLC | 0.00% | — | 1,119,236 | $6.8M |
| First Eagle Investment Management, LLC | 0.01% | Add +28.8% | 803,606 | $4.9M |
| Geode Capital Management, LLC | 0.00% | Add +1.0% | 695,455 | $4.3M |
| Granahan Investment Management, LLC | 0.21% | Add +662.6% | 695,070 | $4.3M |
| State Street Corp. | 0.00% | Add +5.0% | 625,892 | $3.8M |
| Tao Capital Management LP | 2.93% | No change | 568,981 | $3.5M |
| Essex Investment Management Co. LLC | 0.48% | Add +1.8% | 491,221 | $3.0M |
| Morgan Stanley | 0.00% | Reduce -15.3% | 373,258 | $2.3M |
| Meros Investment Management, LP | 0.96% | Add +4.2% | 361,738 | $2.2M |
| Prescott Group Capital Management, L.L.C. | 0.22% | No change | 361,595 | $2.2M |
| HighMark Wealth Management LLC | 0.80% | Add +32.5% | 319,350 | $2.0M |
| Amova Asset Management Americas, Inc. | 0.02% | Reduce -6.3% | 269,873 | $1.7M |
| Sumitomo Mitsui Trust Group, Inc. | 0.00% | Reduce -6.3% | 269,873 | $1.7M |
| Gsa Capital Partners LLP | 0.10% | Add +105.5% | 251,028 | $1.5M |
| Northern Trust Corp. | 0.00% | Add +4.8% | 241,332 | $1.5M |
| GM Advisory Group, LLC | 0.06% | Reduce -14.6% | 238,218 | $1.5M |
| Renaissance Technologies | 0.00% | Add +3.6% | 230,200 | $1.4M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -4.8% | 229,489 | $1.4M |
| Squarepoint Ops LLC | 0.00% | Reduce -2.5% | 213,193 | $1.3M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 180,250 | $1.1M |
| Raymond James Financial Inc. | 0.00% | Reduce -1.0% | 176,520 | $1.1M |
| Sei Investments Co. | 0.00% | Add +101.2% | 164,894 | $1.0M |
| Vanguard Portfolio Management LLC | 0.00% | — | 163,694 | $1.0M |
| Legato Capital Management LLC | 0.09% | Reduce -1.4% | 153,450 | $939K |
| Russell Investments Group, Ltd. | 0.00% | Add +6307.8% | 145,329 | $889K |
| Citadel Advisors | 0.00% | Reduce -45.3% | 144,547 | $885K |
| Millennium Management | 0.00% | Reduce -9.9% | 142,422 | $872K |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Reduce -5.7% | 132,466 | $811K |
| Nano Cap New Millennium Growth Fund L P | 0.69% | No change | 120,000 | $734K |
| Dimensional Fund Advisors LP | 0.00% | Reduce -51.9% | 118,751 | $726K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -44.2% | 111,212 | $681K |
| AQR Capital Management | 0.00% | Reduce -0.4% | 104,406 | $639K |
| Nuveen, LLC | 0.00% | Add +1.1% | 101,074 | $619K |
| UBS Group AG | 0.00% | Reduce -17.1% | 93,445 | $572K |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | 0.04% | Add +15.1% | 89,769 | $549K |
| Bank of Montreal | 0.00% | Reduce -3.8% | 87,375 | $535K |
| Trexquant Investment LP | 0.00% | New | 73,194 | $448K |
| Cassaday & Co Wealth Management LLC | 0.01% | No change | 71,629 | $438K |
| Bruce & Co., Inc. | 0.12% | No change | 68,286 | $418K |
| LPL Financial LLC | 0.00% | Reduce -1.1% | 67,789 | $415K |
| Bank of New York Mellon Corp | 0.00% | Reduce -3.3% | 59,041 | $361K |
| American Century Companies Inc. | 0.00% | No change | 55,894 | $342K |
| Bridgeway Capital Management, LLC | 0.01% | No change | 50,500 | $309K |
| Brooklyn Investment Group | 0.01% | New | 46,259 | $283K |
| Two Sigma Investments, LP | 0.00% | Reduce -39.0% | 44,127 | $270K |
| XTX Topco Ltd | 0.00% | Add +108.4% | 41,365 | $253K |
| Old Port Advisors | 0.05% | No change | 38,629 | $236K |
| Rhumbline Advisers | 0.00% | Reduce -0.6% | 34,550 | $211K |
| Susquehanna International Group, LLP | 0.00% | Add +55.8% | 33,841 | $207K |
| Campbell & CO Investment Adviser LLC | 0.01% | Reduce -63.2% | 29,656 | $181K |
| Alliancebernstein L.P. | 0.00% | Reduce -20.2% | 33,150 | $174K |
| State of Wisconsin Investment Board | 0.00% | Reduce -18.9% | 26,198 | $160K |
| Bank of America Corp. | 0.00% | Reduce -4.8% | 25,078 | $153K |
| Quantinno Capital Management LP | 0.00% | Add +2.1% | 23,725 | $145K |
| T. Rowe Price Associates Inc. | 0.00% | Add +40.2% | 19,385 | $119K |
| Deutsche Bank AG | 0.00% | No change | 18,429 | $113K |
| 49 Wealth Management, LLC | 0.01% | Reduce -2.7% | 17,101 | $105K |
| MetLife Investment Management, LLC | 0.00% | Add +55.5% | 17,022 | $104K |
| Cresset Asset Management, LLC | 0.00% | Reduce -38.0% | 16,343 | $100K |
| Jane Street Group, LLC | 0.00% | Reduce -61.1% | 14,301 | $88K |
| Invesco Ltd. | 0.00% | Reduce -2.1% | 14,128 | $86K |
| Dynamic Technology Lab Private Ltd | 0.01% | New | 13,898 | $85K |
| Graham Capital Management, L.P. | 0.00% | Reduce -36.3% | 13,247 | $81K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +2.4% | 13,028 | $80K |
| Concurrent Investment Advisors, LLC | 0.00% | Add +1.4% | 11,903 | $73K |
| PCM Encore, LLC | 0.01% | No change | 11,830 | $72K |
| JPMorgan Chase & Co. | 0.00% | Add +2.8% | 11,300 | $65K |
| FMR LLC | 0.00% | Reduce -0.1% | 10,543 | $65K |
| Wells Fargo & Company | 0.00% | Reduce -65.8% | 10,480 | $64K |
| Vanguard Global Advisers, LLC | 0.00% | — | 10,286 | $63K |
| Intelligence Driven Advisers, LLC | 0.01% | New | 10,000 | $61K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 8,523 | $52K |
| New York State Common Retirement Fund | 0.00% | No change | 8,487 | $52K |
| Cwm, LLC | 0.00% | Reduce -2.9% | 6,594 | $40K |
| BNP Paribas Financial Markets | 0.00% | Reduce -21.3% | 5,945 | $36K |
| Allworth Financial LP | 0.00% | No change | 5,349 | $33K |
| Osaic Holdings, Inc. | 0.00% | Add +3980.0% | 5,100 | $31K |
| Barclays PLC | 0.00% | Reduce -88.8% | 4,978 | $30K |
| ANTIPODES PARTNERS Ltd | 0.00% | Reduce -13.6% | 4,402 | $27K |
| Pinnacle Wealth Planning Services, Inc. | 0.00% | Reduce -4.1% | 4,180 | $26K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +116.2% | 4,140 | $25K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 2,795 | $17K |
| Legal & General Group Plc | 0.00% | Reduce -8.8% | 2,492 | $15K |
| Signaturefd, LLC | 0.00% | No change | 1,966 | $12K |
| Parallel Advisors, LLC | 0.00% | New | 1,937 | $12K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +878.3% | 1,536 | $9K |
| California State Teachers Retirement System | 0.00% | Reduce -12.1% | 1,482 | $9K |
| Citigroup Inc. | 0.00% | Add +130.5% | 1,429 | $9K |
| Versant Capital Management, Inc | 0.00% | No change | 1,070 | $7K |
| Nisa Investment Advisors, LLC | 0.00% | No change | 684 | $4K |
| GAMMA Investing LLC | 0.00% | Add +28.1% | 606 | $4K |
| Farther Finance Advisors, LLC | 0.00% | New | 393 | $2K |
| Federated Hermes, Inc. | 0.00% | No change | 360 | $2K |
| Sterling Capital Management LLC | 0.00% | Reduce -39.8% | 348 | $2K |
| Royal Bank of Canada | 0.00% | Reduce -46.5% | 418 | $2K |
"% of holder's portfolio" is MASS's weight in each manager's 13F, not the share of 908 Devices Inc. the manager owns.