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MASS

908 Devices Inc.

Company with tickers: MASS

CIK
1555279
CUSIP
65443P102
Shares Outstanding
37,813,621
13F Activity (30d)
105 filings 102 filers
Price
$7.83
Market Cap
$299.48M
P/E Ratio
14.50
EPS (Diluted)
$0.54
52W High
$9.34
52W Low
$4.61
Price History Institutional Holders Short Volume Short Interest Fails to Deliver Financials SEC Filings Earnings Calls Insider Trades Congressional Trades
Holders: 111
Total Value: $170,161,173
Total Shares: 27,804,124
Showing 1–100 of 112 holdings by value · page 1 of 2

Institutional Ownership Trend

22 quarters

Holder Concentration

Across 111 13F filers · Δ vs Dec 31, 2025
Top Holder
21.8%
Jun 2023 → Mar 2026 · range 17.3% – 27.1%
+2.0 pts
Top 5
58.4%
Jun 2023 → Mar 2026 · range 52.7% – 63.6%
−0.0 pts
Top 10
72.5%
Jun 2023 → Mar 2026 · range 70.8% – 79.3%
+1.8 pts
HHI
1,002
Jun 2023 → Mar 2026 · range 774 – 1,194
Broadly held +76

Quarterly Activity

vs Dec 31, 2025
New
11
Increased
32
Decreased
45
Sold Out
18
Unchanged
23
Holder count: -7
Institutional value: +23.7%
Shares held: +6.1%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds
Mid First Light Asset Management, LLC +1,236,377 6,072,563
Mid Granahan Investment Management, LLC +603,929 695,070
Mid NEEDHAM INVESTMENT MANAGEMENT LLC +470,000 1,240,000
Large First Eagle Investment Management, LLC +179,723 803,606
Large Russell Investments Group, Ltd. +143,061 145,329

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds
Mega CITADEL ADVISORS LLC −142,426 144,547
Mega DIMENSIONAL FUND ADVISORS LP −127,863 118,751
Mega GOLDMAN SACHS GROUP INC −88,074 111,212
Mega MORGAN STANLEY −67,228 373,258
Mid Campbell & CO Investment Adviser LLC −50,897 29,656

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD)
Mega VANGUARD CAPITAL MANAGEMENT LLC 1,119,236 $6,849,724
Mega VANGUARD FIDUCIARY TRUST CO 180,250 $1,103,130
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 163,694 $1,001,807
Large Trexquant Investment LP 73,194 $447,947
Mid Brooklyn Investment Group 46,259 $283,105

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD)
Mega VANGUARD GROUP INC 1,470,864 $7,722,034
Large MARSHALL WACE, LLP 190,635 $1,000,833
Small Legato Capital Management LLC 155,594 $816,868
Large HRT FINANCIAL LP 154,830 $812,857
Large ACADIAN ASSET MANAGEMENT LLC 81,862 $429,775
Filter: New 11 Increased 32 Reduced 45 Sold out 18 Unchanged 23
100 of 100 shown
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Action
Mid First Light Asset Management, LLC $37,164,085 21.84% 6,072,563 View
Small AWM Investment Company, Inc. $31,823,534 18.70% 5,199,924 View
Large ARK Investment Management LLC $11,913,712 7.00% 1,946,685 View
Mega BlackRock, Inc. $10,815,971 6.36% 1,767,316 View
Mid NEEDHAM INVESTMENT MANAGEMENT LLC $7,588,800 4.46% 1,240,000 View
Mega VANGUARD CAPITAL MANAGEMENT LLC $6,849,724 4.03% 1,119,236 View
Large First Eagle Investment Management, LLC $4,918,068 2.89% 803,606 View
Mega GEODE CAPITAL MANAGEMENT, LLC $4,256,184 2.50% 695,455 View
Mid Granahan Investment Management, LLC $4,253,828 2.50% 695,070 View
Mega STATE STREET CORP $3,830,459 2.25% 625,892 View
Small Tao Capital Management LP $3,482,163 2.05% 568,981 View
Small ESSEX INVESTMENT MANAGEMENT CO LLC $3,006,272 1.77% 491,221 View
Mega MORGAN STANLEY $2,284,337 1.34% 373,258 View
Small Meros Investment Management, LP $2,213,836 1.30% 361,738 View
Small Prescott Group Capital Management, L.L.C. $2,212,961 1.30% 361,595 View
Micro HighMark Wealth Management LLC $1,954,422 1.15% 319,350 View
Mega Sumitomo Mitsui Trust Group, Inc. $1,651,622 0.97% 269,873 View
Mid Amova Asset Management Americas, Inc. $1,651,622 0.97% 269,873 View
Mid GSA CAPITAL PARTNERS LLP $1,536,291 0.90% 251,028 View
Mega NORTHERN TRUST CORP Bank $1,476,951 0.87% 241,332 View
Small GM Advisory Group, LLC $1,457,894 0.86% 238,218 View
Large RENAISSANCE TECHNOLOGIES LLC $1,408,824 0.83% 230,200 View
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $1,404,472 0.83% 229,489 View
Large Squarepoint Ops LLC $1,304,741 0.77% 213,193 View
Mega VANGUARD FIDUCIARY TRUST CO Bank $1,103,130 0.65% 180,250 View
Mega RAYMOND JAMES FINANCIAL INC $1,080,301 0.63% 176,520 View
Large SEI INVESTMENTS CO $1,009,151 0.59% 164,894 View
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $1,001,807 0.59% 163,694 View
Large Russell Investments Group, Ltd. $889,411 0.52% 145,329 View
Mega CITADEL ADVISORS LLC $884,627 0.52% 144,547 View
Mega MILLENNIUM MANAGEMENT LLC $871,622 0.51% 142,422 View
Mega Mitsubishi UFJ Asset Management Co., Ltd. $810,691 0.48% 132,466 View
Micro NANO CAP NEW MILLENNIUM GROWTH FUND L P $734,400 0.43% 120,000 View
Mega DIMENSIONAL FUND ADVISORS LP $726,755 0.43% 118,751 View
Mega GOLDMAN SACHS GROUP INC $680,616 0.40% 111,212 View
Mega AQR CAPITAL MANAGEMENT LLC $638,964 0.38% 104,406 View
Mega Nuveen, LLC $618,572 0.36% 101,074 View
Mega UBS Group AG $571,883 0.34% 93,445 View
Mid IQ EQ FUND MANAGEMENT (IRELAND) Ltd $549,386 0.32% 89,769 View
Mega BANK OF MONTREAL /CAN/ Bank $534,734 0.31% 87,375 View
Large Trexquant Investment LP $447,947 0.26% 73,194 View
Small Cassaday & Co Wealth Management LLC $438,369 0.26% 71,629 View
Small Bruce & Co., Inc. $417,910 0.25% 68,286 View
Mega LPL Financial LLC $414,868 0.24% 67,789 View
Mega Bank of New York Mellon Corp Bank $361,329 0.21% 59,041 View
Mega AMERICAN CENTURY COMPANIES INC $342,071 0.20% 55,894 View
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $309,060 0.18% 50,500 View
Mid Brooklyn Investment Group $283,105 0.17% 46,259 View
Mega TWO SIGMA INVESTMENTS, LP $270,057 0.16% 44,127 View
Mid XTX Topco Ltd $253,153 0.15% 41,365 View
Small Old Port Advisors $236,409 0.14% 38,629 View
Mega RHUMBLINE ADVISERS $211,446 0.12% 34,550 View
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $207,106 0.12% 33,841 View
Mega ALLIANCEBERNSTEIN L.P. $202,878 0.12% 33,150 View
Mid Campbell & CO Investment Adviser LLC $181,494 0.11% 29,656 View
Large STATE OF WISCONSIN INVESTMENT BOARD $160,331 0.09% 26,198 View
Mega BANK OF AMERICA CORP /DE/ Bank $153,477 0.09% 25,078 View
Large Quantinno Capital Management LP $145,197 0.09% 23,725 View
Mega PRICE T ROWE ASSOCIATES INC /MD/ $118,636 0.07% 19,385 View
Mega DEUTSCHE BANK AG\ Bank $112,785 0.07% 18,429 View
Small 49 WEALTH MANAGEMENT, LLC $104,658 0.06% 17,101 View
Large MetLife Investment Management, LLC $104,174 0.06% 17,022 View
Large Cresset Asset Management, LLC $100,019 0.06% 16,343 View
Mega JANE STREET GROUP, LLC $87,521 0.05% 14,301 View
Mega Invesco Ltd. $86,462 0.05% 14,128 View
Small Dynamic Technology Lab Private Ltd $85,055 0.05% 13,898 View
Mid Graham Capital Management, L.P. $81,071 0.05% 13,247 View
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $79,731 0.05% 13,028 View
Mid Concurrent Investment Advisors, LLC $72,845 0.04% 11,903 View
Small PCM Encore, LLC $72,399 0.04% 11,830 View
Mega JPMORGAN CHASE & CO $69,155 0.04% 11,300 View
Mega FMR LLC $64,522 0.04% 10,543 View
Mega WELLS FARGO & COMPANY/MN $64,136 0.04% 10,480 View
Mega Vanguard Global Advisers, LLC $62,950 0.04% 10,286 View
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $62,424 0.04% 10,200 View
Micro Intelligence Driven Advisers, LLC $61,200 0.04% 10,000 View
Large Police & Firemen's Retirement System of New Jersey Pension $52,160 0.03% 8,523 View
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $51,940 0.03% 8,487 View
Large CWM, LLC $40,355 0.02% 6,594 View
Mega BNP PARIBAS ARBITRAGE, SA $36,383 0.02% 5,945 View
Mid Allworth Financial LP $32,735 0.02% 5,349 View
Large OSAIC HOLDINGS, INC. $31,212 0.02% 5,100 View
Mega BARCLAYS PLC $30,464 0.02% 4,978 View
Mid ANTIPODES PARTNERS Ltd $26,940 0.02% 4,402 View
Small Pinnacle Wealth Planning Services, Inc. $25,581 0.02% 4,180 View
Mid Tower Research Capital LLC (TRC) $25,336 0.01% 4,140 View
Mid Ameritas Investment Partners, Inc. $17,105 0.01% 2,795 View
Mega Legal & General Group Plc $15,251 0.01% 2,492 View
Mid SIGNATUREFD, LLC $12,031 0.01% 1,966 View
Mid Parallel Advisors, LLC $11,854 0.01% 1,937 View
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $9,400 0.01% 1,536 View
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $9,069 0.01% 1,482 View
Mega CITIGROUP INC $8,745 0.01% 1,429 View
Small Versant Capital Management, Inc $6,548 0.00% 1,070 View
Large NISA INVESTMENT ADVISORS, LLC $4,186 0.00% 684 View
Mid GAMMA Investing LLC $3,708 0.00% 606 View
Mega ROYAL BANK OF CANADA Bank $2,557 0.00% 418 View
Mid Farther Finance Advisors, LLC $2,405 0.00% 393 View
Large FEDERATED HERMES, INC. $2,203 0.00% 360 View
Mid Sterling Capital Management LLC $2,129 0.00% 348 View
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