Skip to content
Disclosery

MASS 908 DEVICES INC

Follow

Stock (common), issuer CIK 1555279

103 managers (103 13F filers) reported a position in MASS shares at 2025-06-30, 24,344,399 shares in all. 26 filers opened a position and 12 filers sold out during the quarter.

Managers
103
13F filers
103
New
26
Added
36
Reduced
25
Sold out
12
Shares held by filers
24,344,399

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, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, 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$37.1M4.16%013F-HRTimeline
ARK Investment Management LLCin group ARK Investment Management LLC2,648,278$18.9M0.14%-251,06913F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP2,287,135$16.3M<0.01%+1,819,27013F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.1,790,845$12.8M<0.01%+43,86113F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC1,431,115$10.2M<0.01%+68,94513F-HRTimelineGroup
GM Advisory Group, LLC1,165,291$8.31M0.41%new13F-HRTimeline
First Light Asset Management, LLC1,067,613$7.61M0.99%-633,48213F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC658,603$4.7M<0.01%+68,76413F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP648,796$4.63M0.01%+507,56213F-HRTimelineGroup
Tao Capital Management LP568,981$4.06M2.97%013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY554,245$3.95M<0.01%+22,63613F-HRTimelineGroup
ESSEX INVESTMENT MANAGEMENT CO LLC477,342$3.4M0.62%-3,20713F-HRTimeline
Sumitomo Mitsui Trust Group, Inc.in group Sumitomo Mitsui Trust Group, …398,256$2.84M<0.01%-14,31813F-HRTimelineGroup
Amova Asset Management Americas, Inc.in group Amova Asset Management Americ…394,375$2.81M0.03%-18,19913F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/363,217$2.59M<0.01%+250,31113F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP363,007$2.59M<0.01%-21,32513F-HRTimelineGroup
First Eagle Investment Management, LLCin group First Eagle Investment Manage…267,378$1.91M<0.01%new13F-HRTimelineGroup
Schonfeld Strategic Advisors LLC236,438$1.69M0.01%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co232,273$1.66M<0.01%+20,04313F-HRTimelineGroup
Mitsubishi UFJ Asset Management Co., Lt…in group Mitsubishi UFJ Trust & Bankin…212,514$1.52M<0.01%new13F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP211,045$1.5M<0.01%+11,02413F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA191,325$1.36M<0.01%+187,96813F-HR/ATimelineGroup
Prescott Group Capital Management, L.L.…190,005$1.35M0.16%013F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.186,215$1.33M<0.01%-153,50013F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC174,100$1.24M<0.01%+29,50013F-HRTimeline
NEEDHAM INVESTMENT MANAGEMENT LLCin group NEEDHAM INVESTMENT MANAGEMENT…150,000$1.07M0.09%-50,00013F-HRTimelineGroup
Legato Capital Management LLC142,055$1.01M0.12%-38713F-HRTimeline
Campbell & CO Investment Adviser LLC108,689$775K0.05%new13F-HRTimeline
Parkman Healthcare Partners LLC100,000$713K0.08%new13F-HRTimeline
Nuveen, LLCin group TIAA99,988$713K<0.01%-6,96313F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC94,992$677K<0.01%+13,43413F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.92,896$662K<0.01%-556,73413F-HRTimelineGroup
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/90,959$649K<0.01%+68113F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC82,699$590K<0.01%new13F-HRTimelineGroup
LPL Financial LLC80,503$574K<0.01%-2,50613F-HRTimeline
Manatuck Hill Partners, LLC80,000$570K0.21%new13F-HRTimeline
Old Port Advisors73,629$525K0.14%new13F-HRTimeline
Informed Momentum Co LLC72,416$516K0.08%new13F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP70,994$506K<0.01%+1,06713F-HRTimelineGroup
Meros Investment Management, LP69,470$495K0.24%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC69,279$494K<0.01%-5,37713F-HRTimelineGroup
Bruce & Co., Inc.68,286$487K0.16%013F-HRTimeline
UBS Group AGin group UBS Group AG61,726$440K<0.01%+24,60313F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp57,444$410K<0.01%+5,52913F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC56,296$401K<0.01%+10,48213F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.55,790$398K<0.01%+14,60013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC49,756$355K<0.01%+25,72513F-HR/ATimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC47,850$341K<0.01%new13F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…42,461$303K<0.01%-23,26613F-HRTimelineGroup
IQ EQ FUND MANAGEMENT (IRELAND) Ltd38,186$272K0.02%+15,32413F-HRTimeline
RHUMBLINE ADVISERS36,416$260K<0.01%+1,89413F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC30,500$217K0.01%013F-HRTimeline
ZACKS INVESTMENT MANAGEMENT25,720$183K<0.01%+13,33213F-HRTimeline
SG Americas Securities, LLC23,864$170K<0.01%+3,58613F-HRTimeline
Concurrent Investment Advisors, LLCin group Concurrent Investment Advisor…23,470$167K<0.01%013F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS21,290$152K<0.01%-2,94013F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\21,204$151K<0.01%+53413F-HRTimelineGroup
49 WEALTH MANAGEMENT, LLC19,188$137K0.01%-26,55013F-HRTimeline
Dynamic Technology Lab Private Ltd18,537$132K0.02%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…17,821$127K<0.01%new13F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC17,187$123K<0.01%new13F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…14,977$107K<0.01%+1,02013F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN14,951$107K<0.01%+93213F-HRTimelineGroup
Quantinno Capital Management LP14,698$105K<0.01%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO13,248$94.5K<0.01%+71413F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/12,410$89K<0.01%013F-HRTimeline
Cresset Asset Management, LLC11,745$83.7K<0.01%-44213F-HR/ATimeline
Walleye Capital LLCin group Walleye Capital LLC11,504$82K<0.01%new13F-HRTimelineGroup
Catalyst Funds Management Pty Ltd11,400$81.3K0.02%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC10,904$77.7K<0.01%-6,57913F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …10,869$77.5K<0.01%new13F-HRTimelineGroup
FMR LLCin group FMR LLC10,777$76.8K<0.01%+4,50313F-HRTimelineGroup
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.8,490$61K<0.01%new13F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND8,487$60.5K<0.01%013F-HR/ATimeline
CWM, LLCin group CWM, LLC7,875$56K<0.01%+91213F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC6,666$47.5K<0.01%new13F-HRTimelineGroup
ANTIPODES PARTNERS Ltd6,558$46.8K<0.01%+2,17613F-HRTimeline
Police & Firemen's Retirement System of…5,622$40.1K<0.01%013F-HRTimeline
Allworth Financial LP5,449$38.9K<0.01%+18013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…4,548$32.4K<0.01%-3,97513F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC3,784$27K<0.01%+3,10013F-HRTimeline
Larson Financial Group LLC3,467$24.7K<0.01%-17113F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc2,918$20.8K<0.01%+1,09713F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,795$19.9K<0.01%+1,35313F-HRTimelineGroup
SUMMIT SECURITIES GROUP LLC2,277$16.2K0.01%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…1,720$12.3K<0.01%013F-HRTimeline
SIGNATUREFD, LLC1,447$10.3K<0.01%013F-HRTimeline
Versant Capital Management, Inc1,070$7.63K<0.01%-91913F-HRTimeline
Kozak & Associates, Inc.750$5.3K<0.01%new13F-HRTimeline
AMALGAMATED BANK766$5K<0.01%013F-HRTimeline
GAMMA Investing LLC584$4.16K<0.01%new13F-HRTimeline
Arax Advisory Partners245$1.75K<0.01%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…237$1.69K<0.01%+11113F-HRTimelineGroup
Sterling Capital Management LLC224$1.6K<0.01%-15013F-HR/ATimeline
Essential Partners LLC218$1.55K<0.01%13F-HRTimeline
Rise Advisors, LLC207$1.48K<0.01%013F-HRTimeline
SouthState Bank Corpin group SouthState Bank Corp200$1.43K<0.01%013F-HRTimelineGroup
IFP Advisors, Inc0$1.37K<0.01%new13F-HRTimelineAmount filed as zero, left out of ratios.
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…176$1.25K<0.01%-30713F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.125$891<0.01%-12513F-HR/ATimelineGroup
True Wealth Design, LLC44$314<0.01%+1213F-HRTimeline
FNY Investment Advisers, LLC90$00%-75,39913F-HRTimelineValue filed as zero, left out of ratios.
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount 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