T-모바일 US, Inc.
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionCerity Partners LLC
Latest Disclosed Ownership155,186 shares
Latest Disclosed Value $ 32,592,621
Cerity Partners LLC reports 39.22% decrease in ownership of TMUS / T-Mobile US, Inc.

On May 15, 2026 - Cerity Partners LLC filed a 13F-HR form disclosing ownership of 155,186 shares of T-Mobile US, Inc. (MX:TMUS) valued at $32,592,621 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 255,339 shares of T-Mobile US, Inc.. This represents a change in shares of -39.22% 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)
2026-05-15 2026-03-31 13F T-MOBILE US COM 872590104 155,186 -100,153 -39.22 32,593 -37.13 0.0229
2026-02-11 2025-12-31 13F T-MOBILE US COM 872590104 255,339 127,376 99.54 51,843 69.24 0.0755
2025-10-22 2025-09-30 13F T-MOBILE US COM 872590104 127,963 2,254 1.79 30,632 2.27 0.0497
2025-08-13 2025-06-30 13F T-MOBILE US Stock 872590104 125,709 2,351 1.91 29,951 -8.96 0.0534
2025-04-30 2025-03-31 13F T-MOBILE US Stock 872590104 123,358 5,879 5.00 32,901 28.65 0.0666
2025-02-13 2024-12-31 13F T-MOBILE US Stock 872590104 117,479 -311 -0.26 25,574 5.21 0.0555
2024-11-12 2024-09-30 13F T-MOBILE US Stock 872590104 117,790 21,487 22.31 24,307 43.27 0.0538
2024-08-13 2024-06-30 13F T-MOBILE US COM 872590104 96,303 3,721 4.02 16,967 12.28 0.0447
2024-05-14 2024-03-31 13F T-MOBILE US COM 872590104 92,582 29,615 47.03 15,111 49.69 0.0399
2024-01-26 2023-12-31 13F T-MOBILE US COM 872590104 62,967 36,374 136.78 10,096 171.08 0.0332
2023-11-14 2023-09-30 13F T-MOBILE US Equities 872590104 26,593 -28,318 -51.57 3,724 -51.17 0.0181
2023-08-14 2023-06-30 13F T-MOBILE US Equities 872590104 54,911 3,357 6.51 7,627 -28.62 0.0297
2023-05-11 2023-03-31 13F T-MOBILE US COM 872590104 51,554 23,035 80.77 10,685 167.64 0.0252
2023-02-15 2022-12-31 13F T-MOBILE US Stock 872590104 28,519 15,458 118.35 3,993 127.85 0.0256
2022-11-14 2022-09-30 13F T-MOBILE US Stock 872590104 13,061 1,897 16.99 1,752 16.72 0.0211
2022-08-10 2022-06-30 13F T-MOBILE US COM 872590104 11,164 6,654 147.54 1,501 158.79 0.0166
2022-04-25 2022-03-31 13F T-MOBILE US COM 872590104 4,510 843 22.99 580 35.83 0.0090
2022-02-14 2021-12-31 13F T-MOBILE US Stock 872590104 3,667 603 19.68 427 9.21 0.0065
2021-10-25 2021-09-30 13F T-Mobile US Stock 872590104 3,064 21 0.69 391 -11.34 0.0086
2021-08-11 2021-06-30 13F T-MOBILE US Stock 872590104 3,043 399 15.09 441 33.23 0.0097
2021-08-11 2021-03-31 13F/A-1 T-MOBILE US Stock 872590104 2,644 108 4.26 331 -3.22 0.0079
2021-05-12 2021-03-31 13F T-MOBILE US Stock 872590104 2,643 107 331 0.0098
2021-02-11 2020-12-31 13F T-MOBILE US Stock 872590104 2,536 162 6.82 342 26.20 0.0110
2020-11-12 2020-09-30 13F T-MOBILE US COM 872590104 2,374 446 23.13 271 34.83 0.0111
2020-08-17 2020-06-30 13F/A-1 T-MOBILE US COM 872590104 1,928 1,928 201 0.0111
2020-08-14 2020-06-30 13F T-MOBILE US COM 872590104 1,928 1,928 201 11,085.6307
2018-05-15 2018-03-31 13F T MOBILE US COM 872590104 0 -9,847 -100.00 0 -100.00
2018-02-14 2017-12-31 13F T MOBILE US COM 872590104 9,847 -125 -1.25 625 1.63 0.0419
2017-11-13 2017-09-30 13F T MOBILE US COM 872590104 9,972 -9,636 -49.14 615 -0.97 0.0435
2017-08-10 2017-06-30 13F T MOBILE US COM 872590104 19,608 15,807 415.86 621 152.44 0.0520
2017-05-02 2017-03-31 13F T MOBILE US COM 872590104 3,801 3,801 246 0.0205
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.