T-Mobile US, Inc.
US ˙ NasdaqGS ˙ US8725901040

SecurityTMUS / T-Mobile US, Inc.
InstitutionOssiam
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Ossiam closes position in TMUS / T-Mobile US, Inc.

On February 13, 2026 - Ossiam filed a 13F-HR form disclosing ownership of 0 shares of T-Mobile US, Inc. (US:TMUS) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 24,531 shares of T-Mobile US, Inc.. The current value of the position is $0 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-02-13 2025-12-31 13F T-MOBILE US COM 872590104 0 -100.00 0
2025-11-14 2025-09-30 13F T-MOBILE US COM 872590104 24,531 -27,606 -52.95 5,872 -52.73 0.0756
2025-08-13 2025-06-30 13F T-MOBILE US COM 872590104 52,137 17,489 50.48 12,422 34.44 0.1397
2025-05-14 2025-03-31 13F T-MOBILE US COM 872590104 34,648 3,934 12.81 9,241 36.30 0.1290
2025-02-13 2024-12-31 13F T-MOBILE US COM 872590104 30,714 -5,593 -15.40 6,780 -9.52 0.1170
2024-11-13 2024-09-30 13F T-MOBILE US COM 872590104 36,307 3,689 11.31 7,492 30.39 0.1448
2024-08-13 2024-06-30 13F T-MOBILE US COM 872590104 32,618 -52,692 -61.77 5,747 -58.73 0.1089
2024-05-13 2024-03-31 13F T-MOBILE US COM 872590104 85,310 32,658 62.03 13,924 64.96 0.2439
2024-02-13 2023-12-31 13F T-MOBILE US COM 872590104 52,652 -240,047 -82.01 8,442 -79.41 0.1359
2023-11-14 2023-09-30 13F T-MOBILE US COM 872590104 292,699 18,434 6.72 40,992 7.60 0.7244
2023-08-11 2023-06-30 13F T-MOBILE US COM 872590104 274,265 3,430 1.27 38,095 -2.89 0.6844
2023-05-12 2023-03-31 13F T-MOBILE US COM 872590104 270,835 -8,104 -2.91 39,228 0.45 0.8151
2023-02-13 2022-12-31 13F T-MOBILE US COM 872590104 278,939 -2,421 -0.86 39,051 3.45 1.0123
2022-11-14 2022-09-30 13F T-MOBILE US COM 872590104 281,360 22,760 8.80 37,750 8.50 1.0933
2022-08-12 2022-06-30 13F T-MOBILE US COM 872590104 258,600 -83,268 -24.36 34,792 -20.71 1.0469
2022-05-13 2022-03-31 13F T-MOBILE US COM 872590104 341,868 -589,722 -63.30 43,879 -59.39 1.1481
2022-02-14 2021-12-31 13F T-MOBILE US COM 872590104 931,590 239,307 34.57 108,046 22.16 2.8309
2021-11-12 2021-09-30 13F T-MOBILE US COM 872590104 692,283 143,979 26.26 88,446 12.00 2.5031
2021-08-13 2021-06-30 13F T-MOBILE US COM 872590104 548,304 197,969 56.51 78,967 79.91 2.1429
2021-05-17 2021-03-31 13F T-MOBILE US COM 872590104 350,335 16,696 5.00 43,893 -2.44 1.3665
2021-02-12 2020-12-31 13F T-MOBILE US COM 872590104 333,639 308,206 1,211.84 44,991 1,446.61 1.5701
2020-11-12 2020-09-30 13F T-MOBILE US COM 872590104 25,433 10,773 73.49 2,909 90.50 0.1218
2020-08-13 2020-06-30 13F T-MOBILE US COM 872590104 14,660 -253,972 -94.54 1,527 -93.22 0.0976
2020-05-14 2020-03-31 13F T MOBILE US COM 872590104 268,632 241,404 886.60 22,538 955.64 1.5341
2020-02-14 2019-12-31 13F T MOBILE US COM 872590104 27,228 2,542 10.30 2,135 9.77 0.1628
2019-11-13 2019-09-30 13F T MOBILE US COM 872590104 24,686 -47,102 -65.61 1,945 -63.45 0.1356
2019-08-13 2019-06-30 13F T MOBILE US COM 872590104 71,788 9,624 15.48 5,322 23.88 0.4143
2019-05-15 2019-03-31 13F T MOBILE US COM 872590104 62,164 21,458 52.71 4,296 65.93 0.3545
2019-02-14 2018-12-31 13F T MOBILE US COM 872590104 40,706 40,706 2,589 0.3892
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.