Security Snapshot

908 Devices Inc. - Common Stock (MASS) Institutional Ownership

CUSIP: 65443P102

13F Institutional Holders and Ownership History from Q4 2020 to Q3 2026

13F reference period

Q2 2026

Institutions Reporting

110

Shares (Excl. Options)

28.07MFull value: 28,070,262 · shares · 30 Jun 2026

Price

$8.70

The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.

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Security type / class
Equity / Common Stock
Symbol
MASS on Nasdaq
All holders as of 30 Jun 2026
Q2 2026
Total 13F shares
28,070,262
Latest holder snapshot 5 signals
Total 13F value
$244,099,908
Portfolio coverage rank
0%
Share change
+403,297
Value change
+$6,018,922
Number of holders
110
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
41,621,204
SEC-reported price per share
$12.09
Insider filing price
$12.09
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • MASS - 908 Devices Inc. - Common Stock is tracked under CUSIP 65443P102.
  • 110 institutions reported positions in Q2 2026.
  • 8 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 111 to 110 between Q1 2026 and Q2 2026.
  • SEC-reported value moved from
    $171MFull value: $171,004,387 · USD · 31 Mar 2026
    to
    $244.1MFull value: $244,099,908 · USD · 30 Jun 2026
    .

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

Latest holder context comes from 110 institutions filings for Q2 2026.

Open SEC evidence

Security key

65443P102

13F reference period

Q2 2026

13F holders

110

13D/G owners

8

CIK / CUSIP context first

Open Q2 2026 holders MASS full holder history 908 Devices Inc. SEC filings 908 Devices Inc. company facts 908 Devices Inc. insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

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. 14% -8% $46,307,772 +$124,505 5,824,877 +0.27% Keith Crandell 30 Jun 2026
AWM Investment Company, Inc. 12% -19% $38,794,195 -$2,545,200 4,879,773 -6.2% AWM Investment Company, Inc. 30 Jun 2026
BlackRock, Inc. 4.9% -4% $25,166,677 +$1,218,563 2,039,439 +5.1% BlackRock, Inc. 30 Sep 2026
ARK Investment Management LLC 5.3% +7.6% $16,121,964 +$1,150,476 2,027,920 +7.7% ARK Investment Management LLC 30 Jun 2026
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 30 Jun 2026, 110 institutional investors reported holding
28.07MFull value: 28,070,262 · shares · 30 Jun 2026
shares of 908 Devices Inc. - Common Stock (MASS). This represents 67% of the company’s total
41.62MFull value: 41,621,204 · shares · Stored outstanding share count
outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
61%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
First Light Asset Management, LLC 15% 6,282,804 +3.5% 3.3% $54,660,395
AWM Investment Company, Inc. 12% 4,879,773 -6.2% 3.7% $42,454,025
ARK Investment Management LLC 4.9% 2,027,920 +4.2% 0.11% $17,642,905
BlackRock, Inc. 4.7% 1,944,236 +10% 0% $16,914,853
NEEDHAM INVESTMENT MANAGEMENT LLC 4.4% 1,820,620 +47% 0.48% $15,839,394
VANGUARD CAPITAL MANAGEMENT LLC 3.1% 1,291,570 +15% 0% $11,236,659
First Eagle Investment Management, LLC 2.2% 929,985 +16% 0.01% $8,090,870
GEODE CAPITAL MANAGEMENT, LLC 1.8% 761,797 +9.5% 0% $6,629,605
Granahan Investment Management, LLC 1.7% 692,092 -0.43% 0.21% $6,021,200
STATE STREET CORP 1.5% 606,560 -3.1% 0% $5,277,072
ESSEX INVESTMENT MANAGEMENT CO LLC 1.1% 470,244 -4.3% 0.54% $4,091,123
MORGAN STANLEY 0.97% 404,077 +8.3% 0% $3,515,470
Prescott Group Capital Management, L.L.C. 0.87% 361,595 0% 0.27% $3,145,876
Meros Investment Management, LP 0.87% 361,368 -0.1% 1% $3,143,902
AMERICAN CENTURY COMPANIES INC 0.86% 359,848 +544% 0% $3,130,678
HighMark Wealth Management LLC 0.82% 339,783 +6.4% 0.99% $2,956,112
NORTHERN TRUST CORP 0.64% 266,417 +10% 0% $2,317,828
BANK OF AMERICA CORP /DE/ 0.6% 251,027 +901% 0% $2,183,935
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.56% 233,892 +1.9% 0% $2,034,860
Sumitomo Mitsui Trust Group, Inc. 0.55% 228,681 -15% 0% $1,989,525
Amova Asset Management Americas, Inc. 0.55% 228,681 -15% 0.03% $1,984,951
VANGUARD PORTFOLIO MANAGEMENT LLC 0.47% 194,858 +19% 0% $1,695,265
RENAISSANCE TECHNOLOGIES LLC 0.46% 191,900 -17% 0% $1,669,530
VANGUARD FIDUCIARY TRUST CO 0.45% 186,056 +3.2% 0% $1,618,687
RAYMOND JAMES FINANCIAL INC 0.4% 167,348 -5.2% 0% $1,455,928

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
24
Headline period
Q2 2026
Rows shown
1-24 of 24
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 1,292,054 $15,935,791 +$1,830,104 $12.34 21
2026 Q2 28,070,262 $244,099,908 +$6,018,922 $8.70 110
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
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