Skip to content
Disclosery

MASS 908 DEVICES INC

Follow

Stock (common), issuer CIK 1555279

117 managers (118 13F filers) reported a position in MASS shares at 2025-12-31, 26,160,462 shares in all. 17 filers opened a position and 10 filers sold out during the quarter.

Managers
117
13F filers
118
New
17
Added
38
Reduced
41
Sold out
10
Shares held by filers
26,160,462

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

The latest Form 4 transactions, non-derivative.
OwnerDateSharesPriceFiling
Brown Christopher D.director2026-10-07+60,000 M$1.75Form 4
Brown Christopher D.director2026-10-07-30,000 S$11.89Form 4
Griffith Joseph H. IVofficer (Chief Financial Officer)2026-10-06-5,000 S$13.03Form 4

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
AWM Investment Company, Inc.5,199,924$27.3M2.64%013F-HRTimeline
First Light Asset Management, LLC4,836,186$25.4M1.94%+2,325,69013F-HRTimeline
ARK Investment Management LLCin group ARK Investment Management LLC1,985,986$10.4M0.07%+32,21413F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.1,801,772$9.46M<0.01%+45,56713F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC1,470,864$7.72M<0.01%+49,13213F-HRTimelineGroup
NEEDHAM INVESTMENT MANAGEMENT LLCin group NEEDHAM INVESTMENT MANAGEMENT…770,000$4.04M0.26%+548,00013F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC688,566$3.62M<0.01%+16,47713F-HRTimelineGroup
First Eagle Investment Management, LLCin group First Eagle Investment Manage…623,883$3.28M0.01%+19,92113F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP596,294$3.13M<0.01%-1,702,35413F-HRTimelineGroup
Tao Capital Management LP568,981$2.99M2.57%013F-HRTimeline
ESSEX INVESTMENT MANAGEMENT CO LLC482,614$2.53M0.39%-11,33513F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY440,486$2.31M<0.01%-131,19413F-HR/ATimelineGroup
Prescott Group Capital Management, L.L.…361,595$1.9M0.18%+171,59013F-HRTimeline
Meros Investment Management, LP347,035$1.82M0.72%+242,71213F-HRTimeline
Sumitomo Mitsui Trust Group, Inc.in group Sumitomo Mitsui Trust Group, …288,081$1.51M<0.01%-30,26913F-HRTimelineGroup
Amova Asset Management Americas, Inc.in group Amova Asset Management Americ…288,081$1.51M0.02%-30,26913F-HRTimelineGroup
GM Advisory Group, LLC278,792$1.46M0.06%-399,29413F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC264,373$1.39M<0.01%new13F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP246,614$1.29M<0.01%-78,17413F-HRTimelineGroup
HighMark Wealth Management LLC241,000$1.27M0.52%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co240,929$1.26M<0.01%-19013F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP230,294$1.21M<0.01%+22,26213F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC222,100$1.17M<0.01%+12,80013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC218,676$1.15M<0.01%+84,90213F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC199,286$1.05M<0.01%+119,59613F-HR/ATimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP190,635$1M<0.01%-249,00413F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC178,267$936K<0.01%-5,01513F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC158,103$830K<0.01%+127,04013F-HRTimelineGroup
Legato Capital Management LLC155,594$817K0.07%+13,53913F-HRTimeline
HRT FINANCIAL LP154,830$812K<0.01%new13F-HRTimeline
Mitsubishi UFJ Asset Management Co., Lt…in group Mitsubishi UFJ Trust & Bankin…140,503$715K<0.01%-61,67213F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP122,137$641K0.06%new13F-HRTimeline
NANO CAP NEW MILLENNIUM GROWTH FUND L P120,000$630K0.54%13F-HRTimeline
UBS Group AGgroup of 2 filers holding112,811$592K+52,147Timeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC104,806$550K<0.01%-37313F-HRTimelineGroup
Nuveen, LLCin group TIAA99,988$525K<0.01%013F-HRTimelineGroup
Granahan Investment Management, LLC91,141$478K0.02%+26,80313F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/90,852$477K<0.01%013F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO81,960$430K<0.01%new13F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC81,862$428K<0.01%+64,98413F-HRTimelineGroup
Campbell & CO Investment Adviser LLC80,553$423K0.02%+14,07213F-HRTimeline
IQ EQ FUND MANAGEMENT (IRELAND) Ltd78,026$410K0.03%+25,23913F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP72,327$380K<0.01%013F-HRTimelineGroup
Cassaday & Co Wealth Management LLC71,629$376K0.01%013F-HRTimeline
LPL Financial LLC68,561$360K<0.01%-61213F-HRTimeline
Bruce & Co., Inc.68,286$359K0.11%013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp61,022$320K<0.01%-5,20113F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.55,945$294K<0.01%new13F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC55,894$293K<0.01%-21413F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC50,500$265K0.01%+20,00013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC44,528$234K<0.01%+5,94313F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.41,550$218K<0.01%-4,30013F-HRTimeline
Old Port Advisors38,629$203K0.05%013F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC36,795$193K<0.01%new13F-HRTimelineGroup
RHUMBLINE ADVISERS34,773$183K<0.01%-1,25513F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD32,294$170K<0.01%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN30,623$161K<0.01%+12,82813F-HRTimelineGroup
STRS OHIO29,700$156K<0.01%+16,80013F-HRTimeline
AXQ CAPITAL, LP28,125$148K0.03%+15,08013F-HRTimeline
Engineers Gate Manager LP26,681$140K<0.01%new13F-HRTimeline
Cresset Asset Management, LLC26,343$138K<0.01%+10,67713F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/26,341$138K<0.01%-243,72813F-HRTimelineGroup
Quantinno Capital Management LP23,226$122K<0.01%+5,08613F-HRTimeline
OPAL CAPITAL LLC17,581$121K0.03%13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…21,723$114K<0.01%-2,05513F-HRTimelineGroup
Graham Capital Management, L.P.20,787$109K<0.01%+2,37413F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd19,852$104K<0.01%-25,18413F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\18,429$96.8K<0.01%+17,89513F-HRTimelineGroup
49 WEALTH MANAGEMENT, LLC17,581$92.3K0.01%-1,60713F-HRTimeline
Invesco Ltd.in group Invesco Ltd.14,428$75.7K<0.01%+17913F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/13,827$73K<0.01%013F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…12,722$66.8K<0.01%+2213F-HRTimelineGroup
PCM Encore, LLC11,830$62.1K0.01%13F-HRTimeline
Concurrent Investment Advisors, LLCin group Concurrent Investment Advisor…11,745$61.7K<0.01%-11,72513F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC11,515$60.5K<0.01%-1,72113F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO10,993$57.7K<0.01%-24513F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…10,948$57.5K<0.01%+58213F-HRTimelineGroup
FMR LLCin group FMR LLC10,551$55.4K<0.01%-24213F-HRTimelineGroup
Police & Firemen's Retirement System of…8,523$44.7K<0.01%013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND8,487$44.6K<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS7,557$39.7K<0.01%+2,18313F-HRTimelineGroup
CWM, LLCin group CWM, LLC6,794$36K<0.01%-5213F-HRTimelineGroup
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.6,750$35K<0.01%-99913F-HRTimelineGroup
Allworth Financial LP5,349$28.1K<0.01%-10013F-HRTimeline
ANTIPODES PARTNERS Ltd5,094$26.7K<0.01%-13313F-HRTimeline
Pinnacle Wealth Planning Services, Inc.4,358$22.9K<0.01%new13F-HRTimeline
State of Wyoming3,544$18.6K<0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,795$14.7K<0.01%013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc2,734$14.4K<0.01%-18413F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…2,268$11.9K<0.01%-8,37213F-HRTimelineGroup
SIGNATUREFD, LLC1,966$10.3K<0.01%+51913F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,915$10.1K<0.01%+76813F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…1,686$8.85K<0.01%-3613F-HRTimeline
Versant Capital Management, Inc1,070$5.62K<0.01%013F-HRTimeline
AMALGAMATED BANK860$5K<0.01%+9413F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA781$4K<0.01%-183,43813F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC684$3.59K<0.01%-3,10013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC620$3.25K<0.01%-1,64013F-HRTimelineGroup
Sterling Capital Management LLC578$3.04K<0.01%+8513F-HRTimeline
FLAGSHIP HARBOR ADVISORS, LLC500$2.62K<0.01%new13F-HRTimeline
GAMMA Investing LLC473$2.48K<0.01%-20613F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.466$2.45K<0.01%013F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.360$1.89K<0.01%new13F-HRTimelineGroup
Essential Partners LLC218$1.15K<0.01%013F-HRTimeline
Quarry LP197$1.03K<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP169$887<0.01%+7013F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…137$719<0.01%-2613F-HRTimelineGroup
GROUP ONE TRADING LLC132$693<0.01%new13F-HRTimeline
Cornerstone Financial Management LLC129$677<0.01%13F-HR/ATimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.125$656<0.01%013F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…120$631<0.01%-25513F-HRTimelineGroup
Arax Advisory Partners114$599<0.01%-16413F-HRTimeline
True Wealth Design, LLC34$179<0.01%-1013F-HRTimeline
Sunbelt Securities, Inc.22$116<0.01%013F-HRTimeline
Caitong International Asset Management …21$110<0.01%new13F-HR/ATimeline
Advocate Investing Services LLC18$95<0.01%13F-HRTimeline
FNY Investment Advisers, LLC50$00%-1013F-HRTimelineValue filed as zero, left out of ratios.

Events

  • Brown Christopher D. acquired 30,000 MASS shares on 2026-10-07, Form 4 filed 2026-10-09. 0001836988-26-000027

    Accepted , ingested

  • Griffith Joseph H. IV sold 5,000 MASS shares on 2026-10-06, Form 4 filed 2026-10-08. 0001431531-26-000009

    Accepted , ingested