908 디바이스 주식회사
US ˙ NasdaqGM ˙ US65443P1021

SecurityMASS / 908 Devices Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership93,445 shares
Latest Disclosed Value $ 571,883
UBS Group AG reports 17.05% decrease in ownership of MASS / 908 Devices Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 93,445 shares of 908 Devices Inc. (US:MASS) valued at $571,883 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 112,654 shares of 908 Devices Inc.. This represents a change in shares of -17.05% during the quarter. The current value of the position is $824,185 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-05 2026-03-31 13F 908 DEVICES COM 65443P102 93,445 -19,209 -17.05 572 -3.38 0.0001
2026-01-29 2025-12-31 13F 908 DEVICES COM 65443P102 112,654 51,990 85.70 591 11.30 0.0001
2025-11-13 2025-09-30 13F 908 DEVICES COM 65443P102 60,664 -1,062 -1.72 531 20.68 0.0001
2025-08-14 2025-06-30 13F 908 DEVICES COM 65443P102 61,726 24,603 66.27 440 165.06 0.0001
2025-05-13 2025-03-31 13F 908 DEVICES COM 65443P102 37,123 15,369 70.65 166 253.19 0.0000
2025-02-14 2024-12-31 13F 908 DEVICES COM 65443P102 21,754 13,105 151.52 48 56.67 0.0000
2024-11-14 2024-09-30 13F 908 DEVICES COM 65443P102 8,649 -1,326 -13.29 30 -41.18 0.0000
2024-08-14 2024-06-30 13F 908 DEVICES COM 65443P102 9,975 -10,451 -51.17 51 -66.88 0.0000
2024-05-13 2024-03-31 13F 908 DEVICES COM 65443P102 20,426 -2,318 -10.19 154 -39.61 0.0000
2024-02-09 2023-12-31 13F 908 DEVICES COM 65443P102 22,744 10,290 82.62 255 210.98 0.0001
2023-11-09 2023-09-30 13F 908 DEVICES COM 65443P102 12,454 -4,593 -26.94 83 -29.31 0.0000
2023-08-11 2023-06-30 13F 908 DEVICES COM 65443P102 17,047 2,031 13.53 117 -10.08 0.0000
2023-05-12 2023-03-31 13F 908 DEVICES COM 65443P102 15,016 10,797 255.91 129 303.13 0.0000
2023-02-08 2022-12-31 13F 908 DEVICES COM 65443P102 4,219 1,780 72.98 32 -20.00 0.0000
2022-11-10 2022-09-30 13F 908 DEVICES COM 65443P102 2,439 1,539 171.00 40 110.53 0.0000
2022-08-10 2022-06-30 13F 908 DEVICES COM 65443P102 900 -1,139 -55.86 19 -51.28 0.0000
2022-05-16 2022-03-31 13F 908 DEVICES COM 65443P102 2,039 -9,258 -81.95 39 -86.64 0.0000
2022-02-14 2021-12-31 13F 908 DEVICES COM 65443P102 11,297 8,526 307.69 292 224.44 0.0001
2021-11-15 2021-09-30 13F 908 DEVICES COM 65443P102 2,771 -677 -19.63 90 -32.84 0.0000
2021-08-13 2021-06-30 13F 908 DEVICES COM 65443P102 3,448 1,065 44.69 134 15.52 0.0000
2021-05-12 2021-03-31 13F 908 DEVICES COM 65443P102 2,383 2,383 116 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.