T-Mobile US, Inc.
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership3,299,280 shares
Latest Disclosed Value $ 692,947,779
UBS Group AG ownership in TMUS / T-Mobile US, Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 3,299,280 shares of T-Mobile US, Inc. (MX:TMUS) valued at $692,947,779 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 2,954,563 shares of T-Mobile US, Inc.. This represents a change in shares of 11.67% during the quarter.

UBS Group AG has a history of taking positions in derivatives of the underlying security (TMUS) in the form of stock options. The firm currently holds call options representing 84,100 of underlying shares valued at $17,663,523 USD and put options representing 60,500 of underlying shares valued at $12,706,815 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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 .

Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:TMUS / T-Mobile US, Inc. Historical Put/Call Ratio
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)
2026-05-05 2026-03-31 13F T-MOBILE US COM 872590104 3,299,280 344,717 11.67 692,948 15.51 0.0194
2026-01-29 2025-12-31 13F T-MOBILE US COM 872590104 2,954,563 655,691 28.52 599,894 9.01 0.0973
2025-11-13 2025-09-30 13F T-MOBILE US COM 872590104 2,298,872 -397,479 -14.74 550,304 -14.34 0.0862
2025-08-14 2025-06-30 13F T-MOBILE US COM 872590104 2,696,351 -546,993 -16.87 642,433 -25.73 0.1112
2025-05-13 2025-03-31 13F T-MOBILE US COM 872590104 3,243,344 -440,604 -11.96 865,032 6.38 0.1590
2025-02-14 2024-12-31 13F T-MOBILE US COM 872590104 3,683,948 620,805 20.27 813,158 28.64 0.1503
2024-11-14 2024-09-30 13F T-MOBILE US COM 872590104 3,063,143 101,334 3.42 632,110 21.14 0.1377
2024-08-14 2024-06-30 13F T-MOBILE US COM 872590104 2,961,809 475,757 19.14 521,812 28.60 0.1289
2024-05-13 2024-03-31 13F T-MOBILE US COM 872590104 2,486,052 265,654 11.96 405,773 13.98 0.1011
2024-02-09 2023-12-31 13F T-MOBILE US COM 872590104 2,220,398 -273,207 -10.96 355,996 1.94 0.1066
2023-11-09 2023-09-30 13F T-MOBILE US COM 872590104 2,493,605 312,432 14.32 349,229 15.27 0.1204
2023-08-11 2023-06-30 13F T-MOBILE US COM 872590104 2,181,173 411,695 23.27 302,965 18.21 0.1023
2023-05-12 2023-03-31 13F T-MOBILE US COM 872590104 1,769,478 -252,128 -12.47 256,291 -9.45 0.0937
2023-02-08 2022-12-31 13F T-MOBILE US COM 872590104 2,021,606 672,780 49.88 283,025 56.39 0.1057
2022-11-10 2022-09-30 13F T-MOBILE US COM 872590104 1,348,826 -369,445 -21.50 180,973 -21.72 0.0793
2022-08-10 2022-06-30 13F T-MOBILE US COM 872590104 1,718,271 381,433 28.53 231,176 34.73 0.0949
2022-05-16 2022-03-31 13F T-MOBILE US COM 872590104 1,336,838 -291,777 -17.92 171,583 -9.16 0.0572
2022-02-14 2021-12-31 13F T-MOBILE US COM 872590104 1,628,615 111,291 7.33 188,887 -2.56 0.0541
2021-11-15 2021-09-30 13F T-MOBILE US COM 872590104 1,517,324 -197,099 -11.50 193,853 -21.93 0.0610
2021-08-13 2021-06-30 13F T-MOBILE US COM 872590104 1,714,423 565,489 49.22 248,299 72.49 0.0801
2021-05-12 2021-03-31 13F T-MOBILE US COM 872590104 1,148,934 -59,005 -4.88 143,951 -11.63 0.0478
2021-02-11 2020-12-31 13F T-MOBILE US COM 872590104 1,207,939 64,454 5.64 162,891 24.56 0.0551
2020-11-12 2020-09-30 13F T-MOBILE US COM 872590104 1,143,485 235,906 25.99 130,770 38.35 0.0493
2020-07-31 2020-06-30 13F T-MOBILE US COM 872590104 907,579 953 0.11 94,524 24.27 0.0399
2020-05-01 2020-03-31 13F T MOBILE US COM 872590104 906,626 -414,964 -31.40 76,065 -26.61 0.0358
2020-02-14 2019-12-31 13F T MOBILE US COM 872590104 1,321,590 222,702 20.27 103,639 19.73 0.0361
2019-11-14 2019-09-30 13F T MOBILE US COM 872590104 1,098,888 -515,377 -31.93 86,559 -27.68 0.0333
2019-08-14 2019-06-30 13F T MOBILE US COM 872590104 1,614,265 -185,146 -10.29 119,682 -3.75 0.0461
2019-05-14 2019-03-31 13F T MOBILE US COM 872590104 1,799,411 424,812 30.90 124,339 42.20 0.0514
2019-02-14 2018-12-31 13F T MOBILE US COM 872590104 1,374,599 160,532 13.22 87,438 2.62 0.0397
2018-11-14 2018-09-30 13F T MOBILE US COM 872590104 1,214,067 211,439 21.09 85,204 42.23 0.0338
2018-08-14 2018-06-30 13F T MOBILE US COM 872590104 1,002,628 156,100 18.44 59,907 15.94 0.0259
2018-05-15 2018-03-31 13F T MOBILE US COM 872590104 846,528 269,708 46.76 51,672 41.05 0.0223
2018-02-14 2017-12-31 13F T MOBILE US COM 872590104 576,820 -52,970 -8.41 36,634 -5.66 0.0151
2017-11-14 2017-09-30 13F T MOBILE US COM 872590104 629,790 54,547 9.48 38,833 11.36 0.0180
2017-11-14 2017-06-30 13F/A-1 T MOBILE US COM 872590104 575,243 103,984 22.07 34,871 14.56 0.0180
2017-08-14 2017-06-30 13F T MOBILE US COM 872590104 575,243 103,984 34,871
2017-11-14 2017-03-31 13F/A-1 T MOBILE US COM 872590104 471,259 -26,747 -5.37 30,439 6.28 0.0166
2017-05-12 2017-03-31 13F T MOBILE US COM 872590104 471,259 -26,747 30,439
2017-02-14 2016-12-31 13F T MOBILE US COM 872590104 498,006 -139,319 -21.86 28,641 -3.81 0.0158
2016-11-14 2016-09-30 13F T MOBILE US COM 872590104 637,325 -110,618 -14.79 29,776 -8.00 0.0178
2016-08-12 2016-06-30 13F T MOBILE US COM 872590104 747,943 211,705 39.48 32,364 57.58 0.0203
2016-05-12 2016-03-31 13F T MOBILE US COM 872590104 536,238 -43,544 -7.51 20,538 -9.45 0.0138
2016-02-16 2015-12-31 13F T MOBILE US COM 872590104 579,782 -29,295 -4.81 22,682 -6.45 0.0147
2015-11-13 2015-09-30 13F T MOBILE US COM 872590104 609,077 107,566 21.45 24,247 24.70 0.0172
2015-08-14 2015-06-30 13F T MOBILE US COM 872590104 501,511 20,771 4.32 19,444 27.64 0.0129
2015-05-14 2015-03-31 13F T MOBILE US COM 872590104 480,740 39,491 8.95 15,234 28.15 0.0105
2015-02-17 2014-12-31 13F T MOBILE US COM 872590104 441,249 441,249 11,888 0.0083
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-05 2026-03-31 13F T-MOBILE US COM Call 84,100 -71.48 17,664 -70.50 n/a n/a n/a
2026-01-29 2025-12-31 13F T-MOBILE US COM Call 294,900 3.11 59,876 -12.54 n/a n/a n/a
2025-11-13 2025-09-30 13F T-MOBILE US COM Call 286,000 7.92 68,463 8.43 n/a n/a n/a
2025-08-14 2025-06-30 13F T-MOBILE US COM Call 265,000 -49.04 63,139 -54.48 n/a n/a n/a
2025-05-13 2025-03-31 13F T-MOBILE US COM Call 520,000 -37.42 138,689 -24.38 n/a n/a n/a
2025-02-14 2024-12-31 13F T-MOBILE US COM Call 830,900 5.75 183,405 13.12 n/a n/a n/a
2024-11-14 2024-09-30 13F T-MOBILE US COM Call 785,700 -1.58 162,137 15.28 n/a n/a n/a
2024-08-14 2024-06-30 13F T-MOBILE US COM Call 798,300 -30.72 140,644 -25.22 n/a n/a n/a
2024-05-13 2024-03-31 13F T-MOBILE US COM Call 1,152,300 -46.83 188,078 -45.87 n/a n/a n/a
2024-02-09 2023-12-31 13F T-MOBILE US COM Call 2,167,000 48.03 347,435 69.46 n/a n/a n/a
2023-11-09 2023-09-30 13F T-MOBILE US COM Call 1,463,900 15.37 205,019 16.32 n/a n/a n/a
2023-08-11 2023-06-30 13F T-MOBILE US COM Call 1,268,900 81.87 176,250 74.41 n/a n/a n/a
2023-05-12 2023-03-31 13F T-MOBILE US COM Call 697,700 17.81 101,055 21.89 n/a n/a n/a
2023-02-08 2022-12-31 13F T-MOBILE US COM Call 592,200 103.79 82,908 112.64 n/a n/a n/a
2022-11-10 2022-09-30 13F T-MOBILE US COM Call 290,600 73.08 38,990 72.61 n/a n/a n/a
2022-08-10 2022-06-30 13F T-MOBILE US COM Call 167,900 34.97 22,589 41.47 n/a n/a n/a
2022-05-16 2022-03-31 13F T-MOBILE US COM Call 124,400 50.24 15,967 66.27 n/a n/a n/a
2022-02-14 2021-12-31 13F T-MOBILE US COM Call 82,800 -72.22 9,603 -74.78 n/a n/a n/a
2021-11-15 2021-09-30 13F T-MOBILE US COM Call 298,051 368.26 38,079 313.05 n/a n/a n/a
2021-08-13 2021-06-30 13F T-MOBILE US COM Call 63,651 -28.44 9,219 -17.28 n/a n/a n/a
2021-05-12 2021-03-31 13F T-MOBILE US COM Call 88,951 2.13 11,145 -5.11 n/a n/a n/a
2021-02-11 2020-12-31 13F T-MOBILE US COM Call 87,100 40.94 11,745 66.19 n/a n/a n/a
2020-11-12 2020-09-30 13F T-MOBILE US COM Call 61,800 7,067 n/a n/a n/a
2020-02-14 2019-12-31 13F T MOBILE US COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-14 2019-09-30 13F T MOBILE US COM Call 85,700 -72.35 6,751 -70.63 n/a n/a n/a
2019-08-14 2019-06-30 13F T MOBILE US COM Call 310,000 609.38 22,983 661.03 n/a n/a n/a
2019-05-14 2019-03-31 13F T MOBILE US COM Call 43,700 3,020 n/a n/a n/a
2018-08-14 2018-06-30 13F T MOBILE US COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-05-15 2018-03-31 13F T MOBILE US COM Call 50,000 -35.82 3,052 -38.32 n/a n/a n/a
2018-02-14 2017-12-31 13F T MOBILE US COM Call 77,910 -51.31 4,948 -49.85 n/a n/a n/a
2017-11-14 2017-09-30 13F T MOBILE US COM Call 160,000 52.09 9,866 54.71 n/a n/a n/a
2017-11-14 2017-06-30 13F/A T MOBILE US COM Call 105,200 -54.66 6,377 -57.44 n/a n/a n/a
2017-08-14 2017-06-30 13F T MOBILE US COM Call 105,200 6,377 n/a n/a n/a
2017-11-14 2017-03-31 13F/A T MOBILE US COM Call 232,000 123.94 14,985 151.51 n/a n/a n/a
2017-05-12 2017-03-31 13F T MOBILE US COM Call 232,000 14,985 n/a n/a n/a
2017-02-14 2016-12-31 13F T MOBILE US COM Call 103,600 18.94 5,958 46.42 n/a n/a n/a
2016-11-14 2016-09-30 13F T MOBILE US COM Call 87,100 4,069 n/a n/a n/a
2016-02-16 2015-12-31 13F T MOBILE US COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-11-13 2015-09-30 13F T MOBILE US COM Call 669,400 26,649 n/a n/a n/a
2015-08-14 2015-06-30 13F T MOBILE US COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-14 2015-03-31 13F T MOBILE US COM Call 29,600 1,186.96 938 1,412.90 n/a n/a n/a
2015-02-17 2014-12-31 13F T MOBILE US COM Call 2,300 62 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-05 2026-03-31 13F T-MOBILE US COM Put 60,500 -80.46 12,707 -79.79 n/a n/a n/a
2026-01-29 2025-12-31 13F T-MOBILE US COM Put 309,700 5.02 62,881 -10.92 n/a n/a n/a
2025-11-13 2025-09-30 13F T-MOBILE US COM Put 294,900 -1.70 70,593 -1.24 n/a n/a n/a
2025-08-14 2025-06-30 13F T-MOBILE US COM Put 300,000 -48.56 71,478 -54.05 n/a n/a n/a
2025-05-13 2025-03-31 13F T-MOBILE US COM Put 583,200 -55.76 155,545 -46.54 n/a n/a n/a
2025-02-14 2024-12-31 13F T-MOBILE US COM Put 1,318,200 -6.57 290,966 -0.06 n/a n/a n/a
2024-11-14 2024-09-30 13F T-MOBILE US COM Put 1,410,900 39.51 291,153 63.41 n/a n/a n/a
2024-08-14 2024-06-30 13F T-MOBILE US COM Put 1,011,300 -15.02 178,171 -8.28 n/a n/a n/a
2024-05-13 2024-03-31 13F T-MOBILE US COM Put 1,190,100 -13.21 194,248 -11.65 n/a n/a n/a
2024-02-09 2023-12-31 13F T-MOBILE US COM Put 1,371,300 5.64 219,861 20.94 n/a n/a n/a
2023-11-09 2023-09-30 13F T-MOBILE US COM Put 1,298,100 0.82 181,799 1.65 n/a n/a n/a
2023-08-11 2023-06-30 13F T-MOBILE US COM Put 1,287,600 31.19 178,848 25.81 n/a n/a n/a
2023-05-12 2023-03-31 13F T-MOBILE US COM Put 981,500 -15.97 142,160 -13.07 n/a n/a n/a
2023-02-08 2022-12-31 13F T-MOBILE US COM Put 1,168,100 421.94 163,534 444.62 n/a n/a n/a
2022-11-10 2022-09-30 13F T-MOBILE US COM Put 223,800 24.68 30,027 24.34 n/a n/a n/a
2022-08-10 2022-06-30 13F T-MOBILE US COM Put 179,500 815.82 24,150 859.86 n/a n/a n/a
2022-05-16 2022-03-31 13F T-MOBILE US COM Put 19,600 -91.29 2,516 -90.36 n/a n/a n/a
2022-02-14 2021-12-31 13F T-MOBILE US COM Put 225,019 -46.49 26,098 -51.42 n/a n/a n/a
2021-11-15 2021-09-30 13F T-MOBILE US COM Put 420,499 104.03 53,723 79.98 n/a n/a n/a
2021-08-13 2021-06-30 13F T-MOBILE US COM Put 206,095 -11.09 29,849 2.78 n/a n/a n/a
2021-05-12 2021-03-31 13F T-MOBILE US COM Put 231,795 144.25 29,041 126.94 n/a n/a n/a
2021-02-11 2020-12-31 13F T-MOBILE US COM Put 94,900 -78.01 12,797 -74.07 n/a n/a n/a
2020-11-12 2020-09-30 13F T-MOBILE US COM Put 431,600 19,518.18 49,358 21,453.71 n/a n/a n/a
2020-07-31 2020-06-30 13F T-MOBILE US COM Put 2,200 -90.95 229 -88.77 n/a n/a n/a
2020-05-01 2020-03-31 13F T MOBILE US COM Put 24,300 -68.56 2,039 -66.36 n/a n/a n/a
2020-02-14 2019-12-31 13F T MOBILE US COM Put 77,300 -21.44 6,062 -21.79 n/a n/a n/a
2019-11-14 2019-09-30 13F T MOBILE US COM Put 98,400 440.66 7,751 474.15 n/a n/a n/a
2019-08-14 2019-06-30 13F T MOBILE US COM Put 18,200 -77.11 1,350 -75.42 n/a n/a n/a
2019-05-14 2019-03-31 13F T MOBILE US COM Put 79,500 -46.25 5,493 -41.61 n/a n/a n/a
2019-02-14 2018-12-31 13F T MOBILE US COM Put 147,900 0.27 9,407 -9.13 n/a n/a n/a
2018-11-14 2018-09-30 13F T MOBILE US COM Put 147,500 -44.81 10,352 -35.17 n/a n/a n/a
2018-08-14 2018-06-30 13F T MOBILE US COM Put 267,260 -2.07 15,969 -4.14 n/a n/a n/a
2018-05-15 2018-03-31 13F T MOBILE US COM Put 272,910 0.00 16,658 -3.89 n/a n/a n/a
2018-02-14 2017-12-31 13F T MOBILE US COM Put 272,910 103.07 17,333 109.16 n/a n/a n/a
2017-11-14 2017-09-30 13F T MOBILE US COM Put 134,395 -37.95 8,287 -36.88 n/a n/a n/a
2017-11-14 2017-06-30 13F/A T MOBILE US COM Put 216,600 -67.60 13,130 -69.59 n/a n/a n/a
2017-08-14 2017-06-30 13F T MOBILE US COM Put 216,600 13,130 n/a n/a n/a
2017-11-14 2017-03-31 13F/A T MOBILE US COM Put 668,500 2,128.33 43,178 2,403.07 n/a n/a n/a
2017-05-12 2017-03-31 13F T MOBILE US COM Put 668,500 43,178 n/a n/a n/a
2017-02-14 2016-12-31 13F T MOBILE US COM Put 30,000 1,725 n/a n/a n/a
2016-02-16 2015-12-31 13F T MOBILE US COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-11-13 2015-09-30 13F T MOBILE US COM Put 669,400 26,649 n/a n/a n/a
2015-05-14 2015-03-31 13F T MOBILE US COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-02-17 2014-12-31 13F T MOBILE US COM Put 1,000 27 n/a n/a n/a
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.