T-Mobile US, Inc.
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionRMR Wealth Builders
Latest Disclosed Ownership2,095 shares
Latest Disclosed Value $ 440,040
RMR Wealth Builders reports 0.10% decrease in ownership of TMUS / T-Mobile US, Inc.

On April 22, 2026 - RMR Wealth Builders filed a 13F-HR form disclosing ownership of 2,095 shares of T-Mobile US, Inc. (MX:TMUS) valued at $440,040 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 2,097 shares of T-Mobile US, Inc.. This represents a change in shares of -0.10% 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)
2026-04-22 2026-03-31 13F T-MOBILE US COM 872590104 2,095 -2 -0.10 440 3.53 0.0347
2026-01-29 2025-12-31 13F T-MOBILE US COM 872590104 2,097 -38 -1.78 426 -16.83 0.0341
2025-11-05 2025-09-30 13F T-MOBILE US COM 872590104 2,135 574 36.77 511 37.74 0.0428
2025-07-08 2025-06-30 13F T-MOBILE US COM 872590104 1,561 0 0.00 372 -10.82 0.0338
2025-04-16 2025-03-31 13F T-MOBILE US COM 872590104 1,561 0 0.00 416 20.93 0.0438
2025-01-14 2024-12-31 13F/A-1 T-MOBILE US COM 872590104 1,561 0 0.00 345 6.83 0.0356
2025-01-10 2024-12-31 13F T-MOBILE US COM 872590104 1,561 0 345 0.0358
2024-10-21 2024-09-30 13F T-MOBILE US COM 872590104 1,561 0 0.00 322 17.09 0.0341
2024-07-23 2024-06-30 13F T-MOBILE US COM 872590104 1,561 -59 -3.64 275 4.17 0.0316
2024-04-15 2024-03-31 13F T-MOBILE US COM 872590104 1,620 -40 -2.41 264 -0.75 0.0320
2024-02-06 2023-12-31 13F T-MOBILE US COM 872590104 1,660 -26 -1.54 266 12.71 0.0374
2023-10-23 2023-09-30 13F T-MOBILE US COM 872590104 1,686 0 0.00 236 0.85 0.0377
2023-07-21 2023-06-30 13F T-MOBILE US COM 872590104 1,686 -15 -0.88 234 -4.88 0.0398
2023-04-11 2023-03-31 13F T-MOBILE US COM 872590104 1,701 125 7.93 246 11.82 0.0468
2023-02-15 2022-12-31 13F/A-1 T-MOBILE US COM 872590104 1,576 0 0.00 221 4.27 0.0500
2022-11-08 2022-09-30 13F T-MOBILE US COM 872590104 1,576 15 0.96 211 0.48 0.0516
2022-08-02 2022-06-30 13F T-MOBILE US COM 872590104 1,561 1,561 210 0.0523
2021-08-13 2021-06-30 13F T-MOBILE US COM 872590104 0 -534 -100.00 0 -100.00
2021-05-13 2021-03-31 13F T-MOBILE US COM 872590104 534 0 0.00 67 -6.94 0.0174
2021-02-26 2020-12-31 13F/A-1 T-MOBILE US COM 872590104 534 534 72 0.0354
2020-11-13 2020-09-30 13F T-MOBILE US COM 872590104 0 -534 -100.00 0 -100.00
2020-08-19 2020-06-30 13F T-MOBILE US COM 872590104 534 534 56 0.0499
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.