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

SecurityTMUS / T-Mobile US, Inc.
InstitutionQuilter Plc
Latest Disclosed Ownership521,057 shares
Latest Disclosed Value $ 109,437,602
Quilter Plc reports 11.85% increase in ownership of TMUS / T-Mobile US, Inc.

On May 13, 2026 - Quilter Plc filed a 13F-HR form disclosing ownership of 521,057 shares of T-Mobile US, Inc. (US:TMUS) valued at $109,437,602 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 465,838 shares of T-Mobile US, Inc.. This represents a change in shares of 11.85% during the quarter. The current value of the position is $94,545,793 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)
2026-05-13 2026-03-31 13F T-MOBILE US COM 872590104 521,057 55,219 11.85 109,438 15.70 1.9214
2026-01-21 2025-12-31 13F T-MOBILE US COM 872590104 465,838 33,813 7.83 94,584 -8.54 1.5881
2025-10-31 2025-09-30 13F T-MOBILE US COM 872590104 432,025 10,745 2.55 103,418 3.03 1.7760
2025-08-12 2025-06-30 13F T-MOBILE US COM 872590104 421,280 6,398 1.54 100,374 -9.29 1.8324
2025-04-24 2025-03-31 13F T-MOBILE US COM 872590104 414,882 -13,091 -3.06 110,653 17.14 2.2979
2025-01-29 2024-12-31 13F T-MOBILE US COM 872590104 427,973 -8,793 -2.01 94,466 4.81 1.8661
2024-11-12 2024-09-30 13F T-MOBILE US COM 872590104 436,766 3,678 0.85 90,131 18.13 1.8390
2024-08-09 2024-06-30 13F T-MOBILE US COM 872590104 433,088 11,252 2.67 76,301 10.82 1.7115
2024-05-15 2024-03-31 13F T-MOBILE US COM 872590104 421,836 49,675 13.35 68,852 16.47 1.6282
2024-02-14 2023-12-31 13F/A-1 T-MOBILE US COM 872590104 372,161 8,438 2.32 59,118 -83.71 1.9969
2024-01-24 2023-12-31 13F T-MOBILE US COM 872590104 372,161 8,438 370,002 1.1600
2023-11-01 2023-09-30 13F T-MOBILE US COM 872590104 363,723 1,732 0.48 362,923 1.04 1.4316
2023-07-19 2023-06-30 13F T-MOBILE US COM 872590104 361,991 23,666 7.00 359,200 6.92 1.3950
2023-05-16 2023-03-31 13F T-MOBILE US COM 872590104 338,325 -3,815 -1.12 335,957 601.38 1.2896
2023-02-08 2022-12-31 13F T-MOBILE US COM 872590104 342,140 -1,298 -0.38 47,900 3.95 1.5761
2022-11-02 2022-09-30 13F T-MOBILE US COM 872590104 343,438 12,302 3.72 46,079 3.43 1.6532
2022-08-04 2022-06-30 13F T-MOBILE US COM 872590104 331,136 144,107 77.05 44,551 85.59 1.5073
2022-05-20 2022-03-31 13F T-MOBILE US COM 872590104 187,029 -44,163 -19.10 24,005 -9.26 0.6525
2022-02-14 2021-12-31 13F T-MOBILE US COM 872590104 231,192 -148,342 -39.09 26,455 -45.44 0.6891
2021-11-04 2021-09-30 13F T-MOBILE US COM 872590104 379,534 -6,162 -1.60 48,489 -13.20 1.3526
2021-08-12 2021-06-30 13F T-MOBILE US COM 872590104 385,696 4,792 1.26 55,860 17.05 1.6064
2021-05-14 2021-03-31 13F/A-1 T-MOBILE US COM 872590104 380,904 18,973 5.24 47,723 -2.22 1.5092
2021-05-12 2021-03-31 13F T-MOBILE US COM 872590104 380,904 18,973 47,723 0.6968
2021-02-12 2020-12-31 13F T-MOBILE US COM 872590104 361,931 3,706 1.03 48,807 19.14 1.6721
2020-11-12 2020-09-30 13F T-MOBILE US COM 872590104 358,225 22,129 6.58 40,967 17.04 1.6221
2020-08-12 2020-06-30 13F T-MOBILE US COM 872590104 336,096 11,999 3.70 35,004 28.73 1.7148
2020-05-08 2020-03-31 13F T MOBILE US COM 872590104 324,097 -5,274 -1.60 27,192 5.28 1.7989
2020-02-13 2019-12-31 13F T MOBILE US COM 872590104 329,371 329,371 25,829 1.5161
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.