Latest Period
Q4 2025
- Info
- Insider Trading
- Financials
- Holders
Security Snapshot
908 Devices Inc. - Common Stock, $0.001 par value (MASS) Institutional Ownership
CUSIP: 65443P102
13F Institutional Holders and Ownership History from Q4 2020 to Q1 2026
Institutions Reporting
117
Shares (Excl. Options)
26,160,214
Price
$5.25
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- Type / Class
- Equity / Common Stock, $0.001 par value
- Symbol
- MASS on Nasdaq
- Shares outstanding
- 36,189,228
- Price per share
- $6.12
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 26,160,214
- Total reported value
- $137,342,999
- % of total 13F portfolios
- 0%
- Share change
- +1,545,937
- Value change
- +$6,718,786
- Number of holders
- 117
- Price from insider filings
- $6.12
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- MASS - 908 Devices Inc. - Common Stock, $0.001 par value is tracked under CUSIP 65443P102.
- 117 institutions reported positions in Q4 2025.
- 7 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 117 to 8 between Q4 2025 and Q1 2026.
- Reported value moved from $137,342,999 to $336,293.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 117 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 65443P102?
CUSIP 65443P102 identifies MASS - 908 Devices Inc. - Common Stock, $0.001 par value in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 65443P102:
Significant Owners of 908 Devices Inc. - Common Stock, $0.001 par value (MASS) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| First Light Asset Management, LLC | 17% | +32% | $33,397,591 | +$8,120,952 | 6,184,739 | +32% | Mathew P. Arens | 31 Dec 2025 |
| AWM Investment Company, Inc. | 15% | $27,195,603 | 5,199,924 | AWM Investment Company, Inc. | 31 Mar 2025 | |||
| ARK Investment Management LLC | 5.4% | -32% | $17,115,043 | -$7,312,787 | 1,953,772 | -30% | ARK Investment Management LLC | 30 Sep 2025 |
| BlackRock, Inc. | 4.6% | $8,441,293 | 1,614,014 | BlackRock, Inc. | 31 Mar 2025 | |||
| VANGUARD GROUP INC | 3.8% | $6,927,313 | 1,324,534 | The Vanguard Group | 31 Dec 2024 | |||
| STATE STREET CORP | 1.6% | -80% | $3,219,988 | -$9,127,836 | 596,294 | -74% | STATE STREET CORPORATION | 31 Dec 2025 |
| AMERIPRISE FINANCIAL INC | 0% | $1,653 | 316 | Ameriprise Financial, Inc. | 31 Mar 2025 |
As of 31 Dec 2025, 117 institutional investors reported holding 26,160,214 shares of 908 Devices Inc. - Common Stock, $0.001 par value (MASS). This represents 72% of the company’s total 36,189,228 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of 908 Devices Inc. - Common Stock, $0.001 par value (MASS) together control 63% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| AWM Investment Company, Inc. | 14% | 5,199,924 | 0% | 2.6% | $27,299,601 |
| First Light Asset Management, LLC | 13% | 4,836,186 | +93% | 1.9% | $25,389,977 |
| ARK Investment Management LLC | 5.5% | 1,985,986 | +1.6% | 0.07% | $10,426,428 |
| BlackRock, Inc. | 5% | 1,801,772 | +2.6% | 0% | $9,459,304 |
| VANGUARD GROUP INC | 4.1% | 1,470,864 | +3.5% | 0% | $7,722,037 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 2.1% | 770,000 | +247% | 0.26% | $4,042,500 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9% | 688,566 | +2.5% | 0% | $3,615,638 |
| First Eagle Investment Management, LLC | 1.7% | 623,883 | +3.3% | 0.01% | $3,275,386 |
| STATE STREET CORP | 1.6% | 596,294 | -74% | 0% | $3,130,544 |
| Tao Capital Management LP | 1.6% | 568,981 | 0% | 2.6% | $2,987,150 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 1.3% | 482,614 | -2.3% | 0.39% | $2,533,724 |
| MORGAN STANLEY | 1.2% | 440,485 | -23% | 0% | $2,312,546 |
| Prescott Group Capital Management, L.L.C. | 1% | 361,595 | +90% | 0.18% | $1,898,374 |
| Meros Investment Management, LP | 0.96% | 347,035 | +233% | 0.72% | $1,821,934 |
| Sumitomo Mitsui Trust Group, Inc. | 0.8% | 288,081 | -9.5% | 0% | $1,512,425 |
| Amova Asset Management Americas, Inc. | 0.8% | 288,081 | -9.5% | 0.02% | $1,509,544 |
| GM Advisory Group, LLC | 0.77% | 278,792 | -59% | 0.06% | $1,463,658 |
| CITADEL ADVISORS LLC | 0.73% | 264,373 | 0% | $1,387,959 | |
| DIMENSIONAL FUND ADVISORS LP | 0.68% | 246,614 | -24% | 0% | $1,294,615 |
| HighMark Wealth Management LLC | 0.67% | 241,000 | 0.52% | $1,265,250 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.67% | 240,929 | -0.08% | 0% | $1,264,877 |
| NORTHERN TRUST CORP | 0.64% | 230,294 | +11% | 0% | $1,209,044 |
| RENAISSANCE TECHNOLOGIES LLC | 0.61% | 222,100 | +6.1% | 0% | $1,166,025 |
| Squarepoint Ops LLC | 0.6% | 218,676 | +63% | 0% | $1,148,049 |
| GOLDMAN SACHS GROUP INC | 0.55% | 199,286 | +150% | 0% | $1,046,252 |
Institutional Holders of 908 Devices Inc. - Common Stock, $0.001 par value (MASS) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 54,944 | $336,293 | -$153,237 | $6.12 | 8 |
| 2025 Q4 | 26,160,214 | $137,342,999 | +$6,718,786 | $5.25 | 117 |
| 2025 Q3 | 24,510,470 | $214,708,958 | +$1,943,620 | $8.76 | 105 |
| 2025 Q2 | 24,344,088 | $173,574,077 | +$27,411,966 | $7.13 | 99 |
| 2025 Q1 | 20,622,671 | $92,337,531 | +$24,299,562 | $4.48 | 87 |
| 2024 Q4 | 16,732,616 | $36,807,713 | -$5,746,610 | $2.20 | 80 |
| 2024 Q3 | 18,492,094 | $64,163,900 | -$5,463,890 | $3.47 | 85 |
| 2024 Q2 | 19,504,411 | $100,419,844 | -$10,111,290 | $5.15 | 89 |
| 2024 Q1 | 20,724,192 | $156,449,142 | -$10,708,147 | $7.55 | 74 |
| 2023 Q4 | 22,021,683 | $247,088,380 | +$9,984,843 | $11.22 | 79 |
| 2023 Q3 | 21,144,102 | $140,804,050 | -$774,506 | $6.66 | 82 |
| 2023 Q2 | 21,254,216 | $145,783,534 | -$5,340,434 | $6.86 | 81 |
| 2023 Q1 | 21,933,767 | $187,987,526 | +$2,625,118 | $8.60 | 81 |
| 2022 Q4 | 21,707,424 | $165,394,628 | -$8,272,665 | $7.62 | 87 |
| 2022 Q3 | 21,978,711 | $359,857,638 | +$13,535,482 | $16.45 | 77 |
| 2022 Q2 | 20,102,358 | $389,712,966 | +$11,438,719 | $20.59 | 73 |
| 2022 Q1 | 20,216,228 | $383,706,306 | +$13,800,448 | $19.01 | 79 |
| 2021 Q4 | 18,995,645 | $489,930,434 | +$76,545,064 | $25.87 | 85 |
| 2021 Q3 | 15,985,267 | $519,470,015 | +$123,404,885 | $32.52 | 83 |
| 2021 Q2 | 11,670,999 | $451,896,117 | +$112,113,592 | $38.75 | 73 |
| 2021 Q1 | 8,547,858 | $413,830,255 | +$12,162,543 | $48.50 | 71 |
| 2020 Q4 | 8,054,884 | $457,280,000 | +$457,279,993 | $56.95 | 70 |