908 DEVICES INC

$MASS
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Smart money positioned

7 of the Top-200 alpha managers hold $MASS as of the latest 13F snapshot.

13F holders
108
Insider buys · 90d
0
Congress · 90d
0

Smart Money · top-200 alpha cohort

7 holders · Q1 2026

$MASS is held by 7 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 0.06%, with an average of 0.02% of portfolio. Largest holder: GM Advisory Group, LLC at 0.06%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

01
GM Advisory Group, LLC
0.06% held
α +16.5pts
02
Nikko Asset Management Americas, Inc.
0.02% held
α +22.1pts
03
ANTIPODES PARTNERS Ltd
0.00% held
α +10.8pts
04
Level Financial Advisors
0.00% held
α +30.9pts
05
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.00% held
α +27.5pts

Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.

Institutional holders

Top 10 of 108 · Source: 13F-HR
01
Hartree Partners, LP
3.33% of portfolio
6,072,563 sh
02
Banyan Capital Management, Inc.
—
1,982,519 sh
03
PBMares Wealth Management LLC
2.93% of portfolio
1,137,962 sh
04
Spectrum Asset Management, Inc.
0.01% of portfolio
803,606 sh
05
Cantor Fitzgerald, L. P.
0.21% of portfolio
695,070 sh
06
Axa S.a.
—
625,892 sh
07
State Street
—
596,294 sh
08
Morton Community Bank
0.48% of portfolio
491,221 sh
09
Wealthspan Partners, LLC
0.96% of portfolio
361,738 sh
10
Ci Investments Inc.
0.22% of portfolio
361,595 sh
See all 108 13F holders · Pro →

Insider activity · last 90 days

25 transactions · 5 filers
02 Feb 2026
Knopp Kevin J. —
▼ SOLD
34,764
$6.18
S
02 Feb 2026
Griffith Joseph H. IV —
▼ SOLD
23,175
$6.18
S
03 Oct 2025
Griffith Joseph H. IV —
▼ SOLD
4,292
$9.05
S
02 Oct 2025
Griffith Joseph H. IV —
▼ SOLD
708
$9.04
S
19 Sep 2025
Griffith Joseph H. IV —
▼ SOLD
5,000
$7.07
S
18 Jun 2025
Turner Michael S. —
▼ SOLD
1,373
$7.50
S
17 Jun 2025
Turner Michael S. —
▼ SOLD
7,148
$7.51
S
16 Jun 2025
Turner Michael S. —
▼ SOLD
16,082
$7.51
S
04 Jun 2025
Griffith Joseph H. IV —
▼ SOLD
6,940
$7.08
S
15 May 2025
Knopp Kevin J. —
▲ BOUGHT
15,000
$4.44
P
14 May 2025
Spoto Mark —
▲ BOUGHT
3,000
$4.25
P
14 May 2025
Spoto Mark —
▲ BOUGHT
7,000
$4.30
P

Transaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.

Congress trades · last 90 days

No Congress trades

No STOCK Act filings reference $MASS in the recent window.

Source data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 10:20 UTC.