T-Mobile US, Inc.
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionXponance, Inc.
Latest Disclosed Ownership86,221 shares
Latest Disclosed Value $ 18,108,997
Xponance, Inc. reports 9.06% increase in ownership of TMUS / T-Mobile US, Inc.

On May 13, 2026 - Xponance, Inc. filed a 13F-HR form disclosing ownership of 86,221 shares of T-Mobile US, Inc. (MX:TMUS) valued at $18,108,997 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 79,060 shares of T-Mobile US, Inc.. This represents a change in shares of 9.06% 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.

Upgrade to unlock premium data and export to Excel .

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 86,221 7,161 9.06 18,109 12.81 0.1287
2026-02-12 2025-12-31 13F T-MOBILE US COM 872590104 79,060 -1,689 -2.09 16,052 -16.95 0.1204
2025-11-12 2025-09-30 13F T-MOBILE US COM 872590104 80,749 12,143 17.70 19,330 18.25 0.1531
2025-08-14 2025-06-30 13F T-MOBILE US COM 872590104 68,606 -2,165 -3.06 16,346 -13.40 0.1366
2025-05-01 2025-03-31 13F T-MOBILE US COM 872590104 70,771 329 0.47 18,875 21.40 0.1825
2025-02-11 2024-12-31 13F T-MOBILE US COM 872590104 70,442 873 1.25 15,549 8.30 0.1418
2024-11-12 2024-09-30 13F T-MOBILE US COM 872590104 69,569 -449 -0.64 14,356 16.38 0.1386
2024-08-14 2024-06-30 13F T-MOBILE US COM 872590104 70,018 -128 -0.18 12,336 7.74 0.1261
2024-05-13 2024-03-31 13F T-MOBILE US COM 872590104 70,146 3,803 5.73 11,449 7.64 0.1200
2024-01-31 2023-12-31 13F T-MOBILE US COM 872590104 66,343 3,522 5.61 10,637 20.89 0.1274
2023-10-24 2023-09-30 13F T-MOBILE US COM 872590104 62,821 -3,728 -5.60 8,798 -4.81 0.1197
2023-07-14 2023-06-30 13F T-MOBILE US COM 872590104 66,549 -2,201 -3.20 9,244 -7.17 0.1231
2023-04-18 2023-03-31 13F T-MOBILE US COM 872590104 68,750 1,530 2.28 9,958 5.81 0.1456
2023-01-24 2022-12-31 13F T-MOBILE US COM 872590104 67,220 9,993 17.46 9,411 22.56 0.1525
2022-10-24 2022-09-30 13F T-MOBILE US COM 872590104 57,227 10,406 22.23 7,678 21.89 0.1476
2022-08-02 2022-06-30 13F T-MOBILE US COM 872590104 46,821 8,677 22.75 6,299 28.66 0.1265
2022-04-20 2022-03-31 13F T-MOBILE US COM 872590104 38,144 1,335 3.63 4,896 14.69 0.0814
2022-01-31 2021-12-31 13F T-MOBILE US COM 872590104 36,809 7,176 24.22 4,269 12.76 0.0670
2021-11-05 2021-09-30 13F T-MOBILE US COM 872590104 29,633 -2,838 -8.74 3,786 -19.50 0.0719
2021-08-12 2021-06-30 13F T-MOBILE US COM 872590104 32,471 7,539 30.24 4,703 50.54 0.0864
2021-05-10 2021-03-31 13F T-MOBILE US COM 872590104 24,932 -230 -0.91 3,124 -7.93 0.0662
2021-02-11 2020-12-31 13F T-MOBILE US COM 872590104 25,162 1,579 6.70 3,393 25.81 0.0739
2020-10-26 2020-09-30 13F T-MOBILE US COM 872590104 23,583 605 2.63 2,697 12.70 0.0663
2020-08-14 2020-06-30 13F T-MOBILE US COM 872590104 22,978 22,978 2,393 0.0618
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.