T-Mobile US, Inc.
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionTower Bridge Advisors
Latest Disclosed Ownership50,312 shares
Latest Disclosed Value $ 10,567,029
Tower Bridge Advisors reports 0.24% decrease in ownership of TMUS / T-Mobile US, Inc.

On May 12, 2026 - Tower Bridge Advisors filed a 13F-HR form disclosing ownership of 50,312 shares of T-Mobile US, Inc. (MX:TMUS) valued at $10,567,029 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 50,435 shares of T-Mobile US, Inc.. This represents a change in shares of -0.24% 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 Common 872590104 50,312 -123 -0.24 10,567 3.19 0.7410
2026-02-13 2025-12-31 13F T MOBILE US COMMON 872590104 50,435 -1,435 -2.77 10,240 -17.53 1.0342
2025-11-12 2025-09-30 13F T MOBILE US COMMON 872590104 51,870 -1,505 -2.82 12,417 -2.37 1.2400
2025-08-11 2025-06-30 13F T MOBILE US COMMON 872590104 53,375 793 1.51 12,717 -9.32 1.3671
2025-05-08 2025-03-31 13F T MOBILE US COMMON 872590104 52,582 -402 -0.76 14,024 19.91 1.5670
2025-02-05 2024-12-31 13F T MOBILE US COMMON 872590104 52,984 2,298 4.53 11,695 11.82 1.2455
2024-11-06 2024-09-30 13F T MOBILE US COMMON 872590104 50,686 98 0.19 10,460 17.36 1.0854
2024-07-24 2024-06-30 13F T MOBILE US COMMON 872590104 50,588 4,081 8.78 8,913 17.42 0.9906
2024-04-29 2024-03-31 13F T MOBILE US COMMON 872590104 46,507 -797 -1.68 7,591 0.08 0.7726
2024-02-14 2023-12-31 13F T MOBILE US COMMON 872590104 47,304 1,635 3.58 7,584 18.59 0.6524
2023-11-01 2023-09-30 13F T MOBILE US COMMON 872590104 45,669 340 0.75 6,396 1.57 0.5920
2023-07-20 2023-06-30 13F T-MOBILE US COM 872590104 45,329 176 0.39 6,296 -3.72 0.5772
2023-04-26 2023-03-31 13F T MOBILE US COMMON 872590104 45,153 2,150 5.00 6,540 8.62 0.5355
2023-01-27 2022-12-31 13F T MOBILE US COMMON 872590104 43,003 300 0.70 6,020 5.08 0.5000
2022-11-14 2022-09-30 13F T MOBILE US COMMON 872590104 42,703 2,369 5.87 5,729 5.58 0.5091
2022-07-21 2022-06-30 13F T MOBILE US COMMON 872590104 40,334 114 0.28 5,427 5.11 0.4426
2022-05-05 2022-03-31 13F T MOBILE US COMMON 872590104 40,220 1,140 2.92 5,162 13.90 0.3451
2022-02-09 2021-12-31 13F T MOBILE US COMMON 872590104 39,080 14,078 56.31 4,532 41.89 0.2783
2021-10-28 2021-09-30 13F T MOBILE US COMMON 872590104 25,002 -305 -1.21 3,194 -12.85 0.2131
2021-08-10 2021-06-30 13F T MOBILE US COMMON 872590104 25,307 -1,325 -4.98 3,665 9.86 0.2443
2021-05-12 2021-03-31 13F T MOBILE US COMMON 872590104 26,632 1,432 5.68 3,337 -1.82 0.2512
2021-02-11 2020-12-31 13F T MOBILE US COMMON 872590104 25,200 220 0.88 3,398 18.98 0.2768
2020-11-13 2020-09-30 13F T MOBILE US COMMON 872590104 24,980 -1,660 -6.23 2,857 2.96 0.2919
2020-07-22 2020-06-30 13F T MOBILE US COMMON 872590104 26,640 2,350 9.67 2,775 36.18 0.3111
2020-04-27 2020-03-31 13F T MOBILE US COMMON 872590104 24,290 1,975 8.85 2,038 16.47 0.2675
2020-02-05 2019-12-31 13F T MOBILE US COMMON 872590104 22,315 1,055 4.96 1,750 1.69 0.1849
2019-11-12 2019-09-30 13F T MOBILE US COMMON 872590104 21,260 21,260 1,721 0.1884
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.