908 DEVICES INC (MASS) Institutional Shareholders
908 DEVICES INC (MASS) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $244.39M in MASS holdings during the latest filing period.
First Light Asset Management, Llc is currently the largest disclosed institutional shareholder of MASS tracked by InsiderSet, reporting ownership valued at approximately $54.66M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $68.99M, representing an estimated gain of +26.21% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 76% of the total disclosed MASS value among the investors covered in this analysis. Major shareholders include First Light Asset Management, Llc, Awm Investment Company, Inc., ARK Invest, and several other long-term asset managers with concentrated positions in 908 DEVICES INC (MASS).
This page ranks the largest institutional MASS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
111
Total Reported Value
$244.39M
Largest Holder
First Light Asset Management, Llc
Largest Position
$54.66M
Insider Transactions (90d)
25
Latest Filing Quarter
Q2 2026
New Institutional Positions
135
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| First Light Asset Management, Llc | 3.32% | 6,282,804 | $54,660,395 | $68,985,188 | +$14,324,793 | +26.21% | |
| Awm Investment Company, Inc. | 3.68% | 4,879,773 | $42,454,025 | $53,579,908 | +$11,125,883 | +26.21% | |
| ARK Invest | Cathie Wood | 0.11% | 2,027,920 | $17,642,905 | $22,266,562 | +$4,623,657 | +26.21% |
| Blackrock, Inc. | 0.00% | 1,944,236 | $16,914,853 | $21,347,711 | +$4,432,858 | +26.21% | |
| Needham Investment Management Llc | 0.48% | 1,820,620 | $15,839,394 | $19,990,408 | +$4,151,014 | +26.21% | |
| Vanguard Capital Management Llc | 0.00% | 1,291,570 | $11,236,659 | $14,181,439 | +$2,944,780 | +26.21% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.01% | 929,985 | $8,090,870 | $10,211,235 | +$2,120,365 | +26.21% |
| Geode Capital Management, Llc | 0.00% | 761,797 | $6,629,605 | $8,364,531 | +$1,734,926 | +26.17% | |
| Granahan Investment Management, Llc | 0.21% | 692,092 | $6,021,200 | $7,599,170 | +$1,577,970 | +26.21% | |
| State Street Corp | 0.00% | 606,560 | $5,277,072 | $6,660,029 | +$1,382,957 | +26.21% | |
| Essex Investment Management Co Llc | 0.54% | 470,244 | $4,091,123 | $5,163,279 | +$1,072,156 | +26.21% | |
| Morgan Stanley | 0.00% | 404,078 | $3,515,486 | $4,436,776 | +$921,290 | +26.21% | |
| Prescott Group Capital Management, L.L.C. | 0.27% | 361,595 | $3,145,876 | $3,970,313 | +$824,437 | +26.21% | |
| Meros Investment Management, Lp | 1.00% | 361,368 | $3,143,902 | $3,967,821 | +$823,919 | +26.21% | |
| American Century Companies Inc | 0.00% | 359,848 | $3,130,678 | $3,951,131 | +$820,453 | +26.21% | |
| Highmark Wealth Management Llc | 0.99% | 339,783 | $2,956,112 | $3,730,817 | +$774,705 | +26.21% | |
| Northern Trust Corp | 0.00% | 266,417 | $2,317,828 | $2,925,259 | +$607,431 | +26.21% | |
| Bank Of America Corp | 0.00% | 251,027 | $2,183,935 | $2,756,276 | +$572,341 | +26.21% | |
| Charles Schwab Investment Management Inc | 0.00% | 233,892 | $2,034,860 | $2,568,134 | +$533,274 | +26.21% | |
| Sumitomo Mitsui Trust Group, Inc. | 0.00% | 228,681 | $1,989,525 | $2,510,917 | +$521,392 | +26.21% | |
| Amova Asset Management Americas, Inc. | 0.03% | 228,681 | $1,984,951 | $2,510,917 | +$525,966 | +26.50% | |
| Vanguard Portfolio Management Llc | 0.00% | 194,858 | $1,695,265 | $2,139,541 | +$444,276 | +26.21% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 191,900 | $1,669,530 | $2,107,062 | +$437,532 | +26.21% |
| Vanguard Fiduciary Trust Co | 0.00% | 186,056 | $1,618,687 | $2,042,895 | +$424,208 | +26.21% | |
| Gm Advisory Group, Llc | 0.06% | 238,218 | $1,457,894 | $2,615,634 | +$1,157,740 | +79.41% | |
| Raymond James Financial Inc | 0.00% | 167,348 | $1,455,928 | $1,837,481 | +$381,553 | +26.21% | |
| Russell Investments Group, Ltd. | 0.00% | 149,655 | $1,301,996 | $1,643,212 | +$341,216 | +26.21% | |
| Nuveen, Llc | 0.00% | 141,727 | $1,233,026 | $1,556,162 | +$323,136 | +26.21% | |
| Dimensional Fund Advisors Lp | 0.00% | 124,498 | $1,083,434 | $1,366,988 | +$283,554 | +26.17% | |
| Campbell & Co Investment Adviser Llc | 0.05% | 111,190 | $967,353 | $1,220,866 | +$253,513 | +26.21% | |
| Mitsubishi Ufj Asset Management Co., Ltd. | 0.00% | 110,557 | $961,846 | $1,213,916 | +$252,070 | +26.21% | |
| Nano Cap New Millennium Growth Fund L P | 0.72% | 107,500 | $935,250 | $1,180,350 | +$245,100 | +26.21% | |
| Aqr Capital Management Llc | 0.00% | 103,909 | $904,008 | $1,140,921 | +$236,913 | +26.21% | |
| Iq Eq Fund Management (Ireland) Ltd | 0.05% | 98,689 | $858,594 | $1,083,605 | +$225,011 | +26.21% | |
| Bank Of Montreal | 0.00% | 87,346 | $759,911 | $959,059 | +$199,148 | +26.21% | |
| Sei Investments Co | 0.00% | 77,719 | $676,155 | $853,355 | +$177,200 | +26.21% | |
| Ubs Group Ag | 0.00% | 77,416 | $673,519 | $850,028 | +$176,509 | +26.21% | |
| Goldman Sachs Group Inc | 0.00% | 76,230 | $663,201 | $837,005 | +$173,804 | +26.21% | |
| D. E. Shaw & Co., Inc. | 0.00% | 75,446 | $656,380 | $828,397 | +$172,017 | +26.21% | |
| Bank Of New York Mellon Corp | 0.00% | 72,758 | $632,992 | $798,883 | +$165,891 | +26.21% | |
| Acadian Asset Management Llc | 0.00% | 70,374 | $609,000 | $772,707 | +$163,707 | +26.88% | |
| Bruce & Co., Inc. | 0.16% | 68,286 | $594,088 | $749,780 | +$155,692 | +26.21% | |
| Citadel Advisors Llc | 0.00% | 62,747 | $545,899 | $688,962 | +$143,063 | +26.21% | |
| Lpl Financial Llc | 0.00% | 55,451 | $482,424 | $608,852 | +$126,428 | +26.21% | |
| Bridgeway Capital Management, Llc | 0.01% | 50,500 | $439,350 | $554,490 | +$115,140 | +26.21% | |
| Gsa Capital Partners Llp | 0.03% | 49,160 | $428,000 | $539,777 | +$111,777 | +26.12% | |
| Old Port Advisors | 0.07% | 38,629 | $336,072 | $424,146 | +$88,074 | +26.21% | |
| Squarepoint Ops Llc | 0.00% | 37,739 | $328,329 | $414,374 | +$86,045 | +26.21% | |
| Rhumbline Advisers | 0.00% | 36,791 | $320,076 | $403,965 | +$83,889 | +26.21% | |
| Brooklyn Investment Group | 0.01% | 46,259 | $283,106 | $507,924 | +$224,818 | +79.41% |
Frequently asked questions about MASS
Who owns the most MASS stock?
The largest holders of MASS are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for 908 DEVICES INC (MASS).
Is MASS widely held by superinvestors?
Many widely followed stocks like MASS appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MASS is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.