T-Mobile US, Inc.
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionFmr Llc
Latest Disclosed Ownership12,529,473 shares
Latest Disclosed Value $ 2,631,565,064
Fmr Llc reports 20.36% decrease in ownership of TMUS / T-Mobile US, Inc.

On May 15, 2026 - Fmr Llc filed a 13F-HR form disclosing ownership of 12,529,473 shares of T-Mobile US, Inc. (MX:TMUS) valued at $2,631,565,064 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 15,732,362 shares of T-Mobile US, Inc.. This represents a change in shares of -20.36% 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)
2026-05-15 2026-03-31 13F T-MOBILE US COM 872590104 12,529,473 -3,202,889 -20.36 2,631,565 -17.62 0.0275
2026-02-17 2025-12-31 13F T-MOBILE US COM 872590104 15,732,362 995,525 6.76 3,194,299 -9.45 0.1629
2025-11-13 2025-09-30 13F T-MOBILE US COM 872590104 14,736,837 536,739 3.78 3,527,704 4.27 0.1834
2025-08-14 2025-06-30 13F T-MOBILE US COM 872590104 14,200,098 1,117,070 8.54 3,383,315 -3.04 0.1908
2025-05-12 2025-03-31 13F T-MOBILE US COM 872590104 13,083,028 2,915,910 28.68 3,489,374 55.48 0.2228
2025-02-13 2024-12-31 13F T-MOBILE US COM 872590104 10,167,118 -2,726,652 -21.15 2,244,188 -15.66 0.1339
2024-11-13 2024-09-30 13F T-MOBILE US COM 872590104 12,893,770 1,522,394 13.39 2,660,758 32.81 0.1619
2024-08-13 2024-06-30 13F T-MOBILE US COM 872590104 11,371,376 350,317 3.18 2,003,409 11.37 0.1282
2024-05-13 2024-03-31 13F T-MOBILE US COM 872590104 11,021,059 -2,687,300 -19.60 1,798,857 -18.15 0.1208
2024-02-13 2023-12-31 13F T-MOBILE US COM 872590104 13,708,359 -3,220,371 -19.02 2,197,861 -7.30 0.1688
2023-11-13 2023-09-30 13F T-MOBILE US COM 872590104 16,928,730 -2,008,233 -10.60 2,370,869 -9.86 0.2049
2023-08-11 2023-06-30 13F T-MOBILE US COM 872590104 18,936,963 -2,544,442 -11.84 2,630,344 -15.46 0.2205
2023-08-11 2023-03-31 13F/A-1 T-MOBILE US COM 872590104 21,481,405 36,111 0.17 3,111,367 3.63 0.2846
2023-05-11 2023-03-31 13F T-MOBILE US COM 872590104 21,481,405 36,111 3,111,367 0.0566
2023-02-13 2022-12-31 13F T-MOBILE US COM 872590104 21,445,294 202,464 0.95 3,002,341 5.34 0.2982
2022-11-10 2022-09-30 13F T-MOBILE US COM 872590104 21,242,830 697,188 3.39 2,850,150 3.11 0.2972
2022-08-12 2022-06-30 13F T-MOBILE US COM 872590104 20,545,642 221,845 1.09 2,764,211 5.97 0.2754
2022-05-13 2022-03-31 13F T-MOBILE US COM 872590104 20,323,797 -1,826,093 -8.24 2,608,559 1.54 0.2084
2022-02-14 2021-12-31 13F T-MOBILE US COM 872590104 22,149,890 -9,231,263 -29.42 2,568,944 -35.92 0.1897
2022-02-14 2021-09-30 13F/A-1 T-MOBILE US COM 872590104 31,381,153 -5,688,703 -15.35 4,009,256 -25.32 0.3180
2021-11-15 2021-09-30 13F T-MOBILE US COM 872590104 31,381,153 -5,688,703 4,009,256 0.3179
2021-08-13 2021-06-30 13F T-MOBILE US COM 872590104 37,069,856 -1,299,055 -3.39 5,368,827 11.68 0.4206
2021-05-14 2021-03-31 13F T-MOBILE US COM 872590104 38,368,911 -1,765,494 -4.40 4,807,240 -11.18 0.4106
2021-02-08 2020-12-31 13F T-MOBILE US COM 872590104 40,134,405 -3,711,401 -8.46 5,412,124 7.94 0.4815
2020-11-13 2020-09-30 13F T-MOBILE US COM 872590104 43,845,806 1,386,036 3.26 5,014,206 13.39 0.5068
2020-08-24 2020-06-30 13F/A-1 T-MOBILE US COM 872590104 42,459,770 8,614,541 25.45 4,422,185 55.73 0.4862
2020-08-13 2020-06-30 13F T-MOBILE US COM 872590104 42,459,770 8,614,541 4,422,185 108,640.1445
2020-05-14 2020-03-31 13F T MOBILE US COM 872590104 33,845,229 4,290,130 14.52 2,839,615 22.52 0.3932
2020-02-07 2019-12-31 13F T MOBILE US COM 872590104 29,555,099 -283,893 -0.95 2,317,710 -1.39 0.2557
2019-11-13 2019-09-30 13F T MOBILE US COM 872590104 29,838,992 2,072,341 7.46 2,350,417 14.17 0.2819
2019-08-13 2019-06-30 13F T MOBILE US COM 872590104 27,766,651 3,293,710 13.46 2,058,619 21.73 0.2404
2019-05-13 2019-03-31 13F T MOBILE US COM 872590104 24,472,941 2,601,725 11.90 1,691,080 21.55 0.2026
2019-02-13 2018-12-31 13F T MOBILE US COM 872590104 21,871,216 2,227,123 11.34 1,391,228 0.91 0.1906
2018-11-09 2018-09-30 13F T MOBILE US COM 872590104 19,644,093 462,053 2.41 1,378,622 20.29 0.1551
2018-08-10 2018-06-30 13F T MOBILE US COM 872590104 19,182,040 -2,412,524 -11.17 1,146,127 -13.05 0.1353
2018-05-14 2018-03-31 13F T MOBILE US COM 872590104 21,594,564 -5,384,841 -19.96 1,318,132 -23.07 0.1565
2018-02-12 2017-12-31 13F T MOBILE US COM 872590104 26,979,405 -2,026,102 -6.99 1,713,463 -4.19 0.2009
2017-11-13 2017-09-30 13F T MOBILE US COM 872590104 29,005,507 1,168,389 4.20 1,788,479 5.98 0.2162
2017-08-29 2017-06-30 13F/A-1 T MOBILE US COM 872590104 27,837,118 -755,885 -2.64 1,687,486 -8.63 0.2097
2017-08-11 2017-06-30 13F T MOBILE US COM 872590104 27,837,118 -755,885 1,687,486
2017-05-11 2017-03-31 13F T MOBILE US COM 872590104 28,593,003 736,329 2.64 1,846,822 15.28 0.2346
2017-02-10 2016-12-31 13F T MOBILE US COM 872590104 27,856,674 5,160,676 22.74 1,602,038 51.08 0.2141
2016-11-14 2016-09-30 13F T MOBILE US COM 872590104 22,695,998 6,169,994 37.34 1,060,357 48.28 0.1412
2016-08-11 2016-06-30 13F T MOBILE US COM 872590104 16,526,004 2,228,832 15.59 715,081 30.59 0.0976
2016-05-16 2016-03-31 13F T MOBILE US COM 872590104 14,297,172 3,593,734 33.58 547,582 30.78 0.0758
2016-02-12 2015-12-31 13F T MOBILE US COM 872590104 10,703,438 610,095 6.04 418,718 4.21 0.0563
2015-11-10 2015-09-30 13F T MOBILE US COM 872590104 10,093,343 -1,344,741 -11.76 401,816 -9.39 0.0572
2015-08-25 2015-06-30 13F/A-1 T MOBILE US COM 872590104 11,438,084 1,358,103 13.47 443,454 38.82 0.0568
2015-08-13 2015-06-30 13F T MOBILE US COM 872590104 11,438,084 443,454
2015-05-14 2015-03-31 13F T MOBILE US COM 872590104 10,079,981 -1,930,428 -16.07 319,435 -1.27 0.0407
2015-02-17 2014-12-31 13F T MOBILE US COM 872590104 12,010,409 -3,448,938 -22.31 323,560 -27.50 0.0421
2014-11-14 2014-09-30 13F T-MOBILE US COM 872590104 15,459,347 -1,718,234 -10.00 446,311 -22.72 0.0604
2014-08-14 2014-06-30 13F T-MOBILE US COM 872590104 17,177,581 -1,494,281 -8.00 577,510 -6.36 0.0774
2014-05-15 2014-03-31 13F T-MOBILE US COM 872590104 18,671,862 4,243,375 29.41 616,732 27.06 0.0856
2014-02-13 2013-12-31 13F T-MOBILE US COM 872590104 14,428,487 732,095 5.35 485,374 36.46 0.0686
2013-11-14 2013-09-30 13F T-MOBILE US COM 872590104 13,696,392 4,033,164 41.74 355,696 48.36 0.0545
2013-09-24 2013-06-30 13F/A-1 T-MOBILE US COM 872590104 9,663,228 9,663,228 239,744 0.0392
2013-08-14 2013-06-30 13F T-MOBILE US COM 872590104 9,663,228 239,744 0.0392
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.