T-Mobile US, Inc.
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionNS Partners Ltd
Latest Disclosed Ownership185,851 shares
Latest Disclosed Value $ 39,034,285
NS Partners Ltd reports 1.72% decrease in ownership of TMUS / T-Mobile US, Inc.

On May 11, 2026 - NS Partners Ltd filed a 13F-HR form disclosing ownership of 185,851 shares of T-Mobile US, Inc. (MX:TMUS) valued at $39,034,285 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 189,111 shares of T-Mobile US, Inc.. This represents a change in shares of -1.72% during the quarter.

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)
2026-05-11 2026-03-31 13F T-MOBILE US COM 872590104 185,851 -3,260 -1.72 39,034 1.66 0.9169
2026-02-10 2025-12-31 13F T-MOBILE US COM 872590104 189,111 -5,964 -3.06 38,397 -17.77 1.5042
2025-11-13 2025-09-30 13F T-MOBILE US COM 872590104 195,075 365 0.19 46,697 0.66 1.8064
2025-08-07 2025-06-30 13F T-MOBILE US COM 872590104 194,710 -8,203 -4.04 46,392 -14.28 1.8940
2025-05-12 2025-03-31 13F T-MOBILE US COM 872590104 202,913 2,293 1.14 54,119 22.21 2.3787
2025-02-07 2024-12-31 13F T-MOBILE US COM 872590104 200,620 -2,135 -1.05 44,283 5.84 1.8309
2024-11-08 2024-09-30 13F T-MOBILE US COM 872590104 202,755 4,406 2.22 41,841 19.73 1.7647
2024-08-08 2024-06-30 13F T-MOBILE US COM 872590104 198,349 5,562 2.89 34,945 11.06 1.5847
2024-05-09 2024-03-31 13F T-MOBILE US COM 872590104 192,787 11,306 6.23 31,467 8.15 1.4490
2024-02-09 2023-12-31 13F T-MOBILE US COM 872590104 181,481 4,906 2.78 29,097 17.66 1.4141
2023-11-13 2023-09-30 13F T-MOBILE US COM 872590104 176,575 -1,787 -1.00 24,729 -0.18 1.3304
2023-08-10 2023-06-30 13F T-MOBILE US COM 872590104 178,362 -1,356 -0.75 24,774 -4.83 1.3046
2023-05-10 2023-03-31 13F T-MOBILE US COM 872590104 179,718 239 0.13 26,030 3.59 1.4638
2023-02-10 2022-12-31 13F T-MOBILE US COM 872590104 179,479 869 0.49 25,127 4.85 1.5151
2022-11-10 2022-09-30 13F T-MOBILE US COM 872590104 178,610 7,237 4.22 23,964 3.93 1.5547
2022-08-05 2022-06-30 13F T-MOBILE US COM 872590104 171,373 1,659 0.98 23,057 5.85 1.3997
2022-05-12 2022-03-31 13F T-MOBILE US COM 872590104 169,714 -6,718 -3.81 21,783 6.45 1.1606
2022-02-10 2021-12-31 13F T-MOBILE US COM 872590104 176,432 533 0.30 20,463 -8.94 0.9590
2021-11-12 2021-09-30 13F T-MOBILE US COM 872590104 175,899 935 0.53 22,473 -11.31 1.1450
2021-08-02 2021-06-30 13F T-MOBILE US COM 872590104 174,964 -10,391 -5.61 25,340 9.12 1.3345
2021-04-30 2021-03-31 13F T-MOBILE US COM 872590104 185,355 377 0.20 23,223 -6.90 1.3448
2021-02-10 2020-12-31 13F T-MOBILE US COM 872590104 184,978 1,877 1.03 24,944 19.13 1.4567
2020-11-12 2020-09-30 13F T-MOBILE US COM 872590104 183,101 12,010 7.02 20,939 17.51 1.3793
2020-08-13 2020-06-30 13F T-MOBILE US COM 872590104 171,091 144 0.08 17,819 24.24 1.3180
2020-05-13 2020-03-31 13F T MOBILE US COM 872590104 170,947 5,260 3.17 14,342 10.38 1.3330
2020-02-12 2019-12-31 13F T-Mobile US COM 872590104 165,687 -10 -0.01 12,993 -0.45 1.0343
2019-11-12 2019-09-30 13F T-Mobile US COM 872590104 165,697 2,521 1.54 13,052 7.89 1.1763
2019-08-07 2019-06-30 13F T-Mobile US COM 872590104 163,176 427 0.26 12,098 7.58 1.1121
2019-05-08 2019-03-31 13F T-Mobile US COM 872590104 162,749 -199 -0.12 11,246 8.50 1.0422
2019-02-12 2018-12-31 13F T-Mobile US COM 872590104 162,948 182 0.11 10,365 -9.26 1.1096
2018-11-14 2018-09-30 13F T-Mobile US COM 872590104 162,766 -1,025 -0.63 11,423 16.72 1.0915
2018-08-02 2018-06-30 13F T-Mobile US COM 872590104 163,791 0 0.00 9,787 -2.11 1.0038
2018-05-15 2018-03-31 13F T-Mobile US COM 872590104 163,791 141 0.09 9,998 -3.80 1.0678
2018-02-09 2017-12-31 13F T-Mobile US COM 872590104 163,650 1,802 1.11 10,393 4.14 1.1412
2017-11-14 2017-09-30 13F T-Mobile US COM 872590104 161,848 -726 -0.45 9,980 1.27 1.1913
2017-08-14 2017-06-30 13F T-Mobile US COM 872590104 162,574 9,972 6.53 9,855 -0.02 1.2925
2017-05-15 2017-03-31 13F T-Mobile US COM 872590104 152,602 143 0.09 9,857 12.42 1.4189
2017-02-13 2016-12-31 13F/A-1 T-Mobile US COM 872590104 152,459 2,224 1.48 8,768 24.92 1.3756
2016-11-15 2016-09-30 13F T-Mobile US COM 872590104 150,235 -186 -0.12 7,019 7.84 1.1444
2016-08-15 2016-06-30 13F T-Mobile US COM 872590104 150,421 87,683 139.76 6,509 170.87 1.1100
2016-06-02 2016-03-31 13F/A-1 T-Mobile US COM 872590104 62,738 603 0.97 2,403 -1.15 0.4329
2016-05-13 2016-03-31 13F T-Mobile US COM 872590104 62,135 0 2,431 0.4343
2016-02-12 2015-12-31 13F T-Mobile US COM 872590104 62,135 54,471 710.74 2,431 697.05 0.4343
2015-11-16 2015-09-30 13F T-Mobile US COM 872590104 7,664 -83 -1.07 305 1.67 0.0535
2015-11-16 2015-06-30 13F T-Mobile US COM 872590104 7,747 7,747 300 0.0478
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.