Latest Period
Q1 2026
Security Snapshot
908 Devices Inc. - Common Stock (MASS) Institutional Ownership
CUSIP: 65443P102
13F Institutional Holders and Ownership History from Q4 2020 to Q1 2026
Institutions Reporting
111
Shares (Excl. Options)
27,947,303
Price
$6.12
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- Security type / class
- Equity / Common Stock
- Symbol
- MASS on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 27,947,303
- Total 13F value
- $171,004,387
- Portfolio coverage rank
- 0%
- Share change
- +1,785,902
- Value change
- +$11,441,915
- Number of holders
- 111
- Shares outstanding
- 38,121,579
- SEC-reported price per share
- $7.93
- Insider filing price
- $7.93
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MASS - 908 Devices Inc. - Common Stock is tracked under CUSIP 65443P102.
- 111 institutions reported positions in Q1 2026.
- 8 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 118 to 111 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $137,344,144 to $171,004,387.
Research use
- 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.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 111 institutions filings for Q1 2026.
Security key
65443P102
Latest holder period
Q1 2026
13F holders
111
13D/G owners
8
CIK / CUSIP context first
Open Q1 2026 holders
MASS full holder history
908 Devices Inc. SEC filings
908 Devices Inc. company facts
908 Devices Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 65443P102:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
8
Security
MASS
| 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 |
| ARCH Venture Fund VII, L.P. | 15% | $41,477,802 | 5,809,216 | Keith Crandell | 31 Mar 2026 | |||
| AWM Investment Company, Inc. | 15% | $27,195,603 | 5,199,924 | AWM Investment Company, Inc. | 31 Mar 2025 | |||
| ARK Investment Management LLC | 4.9% | -9.4% | $14,933,824 | -$559,588 | 1,883,206 | -3.6% | ARK Investment Management LLC | 31 May 2026 |
| 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 Mar 2026, 111 institutional investors reported holding 27,947,303 shares of 908 Devices Inc. - Common Stock (MASS). This represents 73% of the company’s total 38,121,579 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
65%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| First Light Asset Management, LLC | 16% | 6,072,563 | +26% | 3.3% | $37,164,086 |
| AWM Investment Company, Inc. | 14% | 5,199,924 | 0% | 3.5% | $31,823,535 |
| ARK Investment Management LLC | 5.1% | 1,946,685 | -2% | 0.09% | $11,913,711 |
| BlackRock, Inc. | 4.6% | 1,767,316 | -1.9% | 0% | $10,815,974 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 3.3% | 1,240,000 | +61% | 0.39% | $7,588,800 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.9% | 1,119,236 | 0% | 0% | $6,849,724 |
| First Eagle Investment Management, LLC | 2.1% | 803,606 | +29% | 0.01% | $4,918,069 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.8% | 695,455 | +1% | 0% | $4,257,481 |
| Granahan Investment Management, LLC | 1.8% | 695,070 | +663% | 0.21% | $4,253,828 |
| STATE STREET CORP | 1.6% | 625,892 | +5% | 0% | $3,830,459 |
| Tao Capital Management LP | 1.5% | 568,981 | 0% | 2.9% | $3,482,164 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 1.3% | 491,221 | +1.8% | 0.48% | $3,006,273 |
| MORGAN STANLEY | 0.98% | 373,258 | -15% | 0% | $2,284,340 |
| Meros Investment Management, LP | 0.95% | 361,738 | +4.2% | 0.96% | $2,213,837 |
| Prescott Group Capital Management, L.L.C. | 0.95% | 361,595 | 0% | 0.22% | $2,212,961 |
| HighMark Wealth Management LLC | 0.84% | 319,350 | +33% | 0.8% | $1,954,422 |
| Sumitomo Mitsui Trust Group, Inc. | 0.71% | 269,873 | -6.3% | 0% | $1,651,623 |
| Amova Asset Management Americas, Inc. | 0.71% | 269,873 | -6.3% | 0.02% | $1,651,623 |
| GSA CAPITAL PARTNERS LLP | 0.66% | 251,028 | +106% | 0.1% | $1,536,000 |
| NORTHERN TRUST CORP | 0.63% | 241,332 | +4.8% | 0% | $1,476,952 |
| GM Advisory Group, LLC | 0.62% | 238,218 | -15% | 0.06% | $1,457,894 |
| RENAISSANCE TECHNOLOGIES LLC | 0.6% | 230,200 | +3.6% | 0% | $1,408,824 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.6% | 229,489 | -4.7% | 0% | $1,404,473 |
| Squarepoint Ops LLC | 0.56% | 213,193 | -2.5% | 0% | $1,304,741 |
| VANGUARD FIDUCIARY TRUST CO | 0.47% | 180,250 | 0% | 0% | $1,103,130 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
22
Latest
Q1 2026
Rows shown
1-22 of 22
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 27,947,303 | $171,004,387 | +$11,441,915 | $6.12 | 111 |
| 2025 Q4 | 26,160,432 | $137,344,144 | +$6,718,786 | $5.25 | 118 |
| 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 |