T-Mobile US, Inc.
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionStifel Financial Corp
Latest Disclosed Ownership405,557 shares
Latest Disclosed Value $ 85,180,602
Stifel Financial Corp reports 13.61% increase in ownership of TMUS / T-Mobile US, Inc.

On May 12, 2026 - Stifel Financial Corp filed a 13F-HR form disclosing ownership of 405,557 shares of T-Mobile US, Inc. (MX:TMUS) valued at $85,180,602 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 356,979 shares of T-Mobile US, Inc.. This represents a change in shares of 13.61% 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)
2026-05-12 2026-03-31 13F T-MOBILE US COM 872590104 405,557 48,578 13.61 85,181 17.51 0.0184
2026-02-13 2025-12-31 13F T-MOBILE US COM 872590104 356,979 -53,863 -13.11 72,488 -26.30 0.0652
2025-11-12 2025-09-30 13F T-MOBILE US COM 872590104 410,842 -4,697 -1.13 98,357 -0.67 0.0898
2025-08-14 2025-06-30 13F T-MOBILE US COM 872590104 415,539 -6,112 -1.45 99,016 -11.96 0.0963
2025-05-14 2025-03-31 13F T-MOBILE US COM 872590104 421,651 62,293 17.33 112,466 41.77 0.1195
2025-02-13 2024-12-31 13F T-MOBILE US COM 872590104 359,358 -4,698 -1.29 79,328 5.58 0.0826
2024-11-14 2024-09-30 13F T-MOBILE US COM 872590104 364,056 -2,100 -0.57 75,132 16.46 0.0788
2024-08-13 2024-06-30 13F T-MOBILE US COM 872590104 366,156 4,994 1.38 64,514 9.43 0.0726
2024-05-14 2024-03-31 13F T-MOBILE US COM 872590104 361,162 90,171 33.27 58,953 35.68 0.0672
2024-02-12 2023-12-31 13F T-MOBILE US COM 872590104 270,991 -7,290 -2.62 43,451 11.49 0.0547
2023-11-13 2023-09-30 13F T-MOBILE US COM 872590104 278,281 51,726 22.83 38,973 23.85 0.0548
2023-08-14 2023-06-30 13F T-MOBILE US COM 872590104 226,555 -10,990 -4.63 31,469 -8.54 0.0431
2023-05-12 2023-03-31 13F T-MOBILE US COM 872590104 237,545 -8,946 -3.63 34,406 -0.30 0.0493
2023-02-13 2022-12-31 13F T-MOBILE US COM 872590104 246,491 24,848 11.21 34,509 16.04 0.0518
2022-11-14 2022-09-30 13F T-MOBILE US COM 872590104 221,643 14,145 6.82 29,739 6.53 0.0487
2022-08-15 2022-06-30 13F T-MOBILE US COM 872590104 207,498 37,321 21.93 27,917 27.81 0.0437
2022-05-13 2022-03-31 13F T-MOBILE US COM 872590104 170,177 41,628 32.38 21,842 46.50 0.0298
2022-02-14 2021-12-31 13F T-MOBILE US COM 872590104 128,549 -5,901 -4.39 14,909 -13.20 0.0197
2021-11-15 2021-09-30 13F T-MOBILE US COM 872590104 134,450 -44,708 -24.95 17,177 -33.80 0.0252
2021-08-13 2021-06-30 13F T-MOBILE US COM 872590104 179,158 33,580 23.07 25,947 42.25 0.0388
2021-05-14 2021-03-31 13F T-MOBILE US COM 872590104 145,578 9,874 7.28 18,241 -0.32 0.0301
2021-02-12 2020-12-31 13F T-MOBILE US COM 872590104 135,704 8,872 7.00 18,300 26.16 0.0327
2020-11-16 2020-09-30 13F T-MOBILE US COM 872590104 126,832 61,907 95.35 14,505 114.54 0.0298
2020-08-14 2020-06-30 13F T-MOBILE US COM 872590104 64,925 18,204 38.96 6,761 72.04 0.0155
2020-05-14 2020-03-31 13F T MOBILE US COM 872590104 46,721 -4,352 -8.52 3,930 -2.09 0.0109
2020-02-13 2019-12-31 13F T MOBILE US COM 872590104 51,073 -9,864 -16.19 4,014 -16.44 0.0084
2019-11-19 2019-09-30 13F/A-1 T MOBILE US COM 872590104 60,937 -2,420 -3.82 4,804 2.63 0.0123
2019-11-13 2019-09-30 13F T MOBILE US COM 872590104 60,916 -2,441 4,802 2,691.7617
2019-08-14 2019-06-30 13F T MOBILE US COM 872590104 63,357 -31,083 -32.91 4,681 -28.22 0.0121
2019-05-14 2019-03-31 13F T MOBILE US COM 872590104 94,440 36,651 63.42 6,521 79.00 0.0184
2019-02-13 2018-12-31 13F T MOBILE US COM 872590104 57,789 2,763 5.02 3,643 -5.30 0.0118
2018-11-13 2018-09-30 13F T MOBILE US COM 872590104 55,026 7,938 16.86 3,847 37.20 0.0110
2018-08-14 2018-06-30 13F T MOBILE US COM 872590104 47,088 22,351 90.35 2,804 85.70 0.0086
2018-05-11 2018-03-31 13F T MOBILE US COM 872590104 24,737 6,059 32.44 1,510 27.86 0.0048
2018-02-14 2017-12-31 13F T MOBILE US COM 872590104 18,678 -3,317 -15.08 1,181 -12.39 0.0037
2017-11-13 2017-09-30 13F T MOBILE US COM 872590104 21,995 325 1.50 1,348 2.90 0.0047
2017-08-14 2017-06-30 13F T MOBILE US COM 872590104 21,670 -38,414 -63.93 1,310 -66.11 0.0049
2017-05-10 2017-03-31 13F T MOBILE US COM 872590104 60,084 -13,491 -18.34 3,866 -8.52 0.0150
2017-02-16 2016-12-31 13F T MOBILE US COM 872590104 73,575 12,359 20.19 4,226 47.20 0.0179
2016-11-15 2016-09-30 13F T MOBILE US COM 872590104 61,216 -9,087 -12.93 2,871 -5.62 0.0129
2016-08-17 2016-06-30 13F T MOBILE US COM 872590104 70,303 8,969 14.62 3,042 29.50 0.0141
2016-05-16 2016-03-31 13F T-MOBILE US COM 872590104 61,334 33,396 119.54 2,349 114.91 0.0125
2016-03-21 2015-12-31 13F/A-2 T MOBILE US COM 872590104 27,938 -2,851 -9.26 1,093 -10.85 0.0057
2016-02-26 2015-12-31 13F/A-1 T MOBILE US COM 872590104 28,011 73 1,096 0.0057
2016-02-16 2015-12-31 13F T MOBILE US COM 872590104 28,046 1,097
2015-11-16 2015-09-30 13F T MOBILE US COM 872590104 30,789 -348 -1.12 1,226 1.66 0.0069
2015-08-17 2015-06-30 13F/A-1 T MOBILE US COM 872590104 31,137 7,430 31.34 1,206 60.59 0.0062
2015-08-17 2015-06-30 13F T MOBILE US COM 872590104 31,065 1,204
2015-05-14 2015-03-31 13F T MOBILE US COM 872590104 23,707 -5,111 -17.74 751 -3.22 0.0041
2015-02-13 2014-12-31 13F T MOBILE US COM 872590104 28,818 -91,424 -76.03 776 -77.65 0.0043
2014-11-13 2014-09-30 13F T-MOBILE US COM 872590104 120,242 9,765 8.84 3,472 -6.52 0.0305
2014-08-14 2014-06-30 13F T-MOBILE US COM 872590104 110,477 -10,145 -8.41 3,714 -6.78 0.0334
2014-05-15 2014-03-31 13F T-MOBILE US COM 872590104 120,622 120,622 3,984 0.0381
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.