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Bruce & Co., Inc.

Position in MASS — 908 Devices Inc.

CIK 1358331 CHICAGO, IL

Position in MASS

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$594,088
+$176,178 QoQ
Shares Held
68,286
0.0% QoQ
Ownership
0.165%
of shares outstanding
% of Portfolio
0.19%
of 13F equity value
Holder Rank
#41
of 110 holders
Holding Since
Dec 2022
15 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in MASS Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Jun 30, 2026

Bruce & Co., Inc. holds $21,215,709 across 3 Medical Devices names. MASS ranks #3 (2.8% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 MASS
908 Devices Inc.
This page
68,286 $594,088

All Filings in MASS

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15 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $594,088 68,286
2026-03-31 $417,910 68,286
2025-12-31 $358,501 68,286
2025-09-30 $598,185 68,286
2025-06-30 $486,879 68,286
2025-03-31 $305,921 68,286
2024-12-31 $150,229 68,286
2024-09-30 $236,952 68,286
2024-06-30 $351,672 68,286
2024-03-31 $515,559 68,286
2023-12-31 $766,168 68,286
2023-09-30 $454,784 68,286
2023-06-30 $468,441 68,286
2023-03-31 $587,259 68,286
2022-12-31 $520,339 68,286