T-Mobile US, Inc.
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionAllstate Corp
Latest Disclosed Ownership42,820 shares
Latest Disclosed Value $ 8,993,484
Allstate Corp reports 12.41% increase in ownership of TMUS / T-Mobile US, Inc.

On May 11, 2026 - Allstate Corp filed a 13F-HR form disclosing ownership of 42,820 shares of T-Mobile US, Inc. (MX:TMUS) valued at $8,993,484 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 38,094 shares of T-Mobile US, Inc.. This represents a change in shares of 12.41% 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)
2026-05-11 2026-03-31 13F T MOBILE US ORD Equity 872590104 42,820 4,726 12.41 8,993 16.28 0.0890
2026-02-09 2025-12-31 13F T MOBILE US ORD Equity 872590104 38,094 19,353 103.27 7,735 72.40 0.1057
2025-10-29 2025-09-30 13F T MOBILE US ORD Equity 872590104 18,741 17,646 1,611.51 4,486 1,625.38 0.1024
2025-08-05 2025-06-30 13F T MOBILE US ORD Equity 872590104 1,095 -20,036 -94.82 261 -95.39 0.0188
2025-05-14 2025-03-31 13F T MOBILE US ORD Equity 872590104 21,131 5,589 35.96 5,636 64.29 0.1656
2025-02-12 2024-12-31 13F T MOBILE US ORD Equity 872590104 15,542 15,542 3,431 0.1010
2024-11-14 2024-09-30 13F T-MOBILE US EQU 872590104 0 -2,130 -100.00 0 -100.00
2024-08-13 2024-06-30 13F T-MOBILE US EQU 872590104 2,130 0 0.00 375 8.07 0.0305
2024-05-10 2024-03-31 13F T-MOBILE US EQU 872590104 2,130 -80 -3.62 348 -1.98 0.0247
2024-02-09 2023-12-31 13F T-MOBILE US EQU 872590104 2,210 -133 -5.68 354 7.93 0.0245
2023-11-13 2023-09-30 13F T-MOBILE US EQU 872590104 2,343 0 0.00 328 0.92 0.0192
2023-08-14 2023-06-30 13F T-MOBILE US EQU 872590104 2,343 24 1.03 325 -2.99 0.0207
2023-05-10 2023-03-31 13F T MOBILE US EQU 872590104 2,319 -25,443 -91.65 336 -91.38 0.0250
2023-02-14 2022-12-31 13F T-MOBILE US EQU 872590104 27,762 220 0.80 3,887 5.17 0.1182
2022-11-14 2022-09-30 13F T-MOBILE US EQU 872590104 27,542 -115 -0.42 3,695 -0.70 0.1063
2022-08-15 2022-06-30 13F T-MOBILE US EQU 872590104 27,657 -6,428 -18.86 3,721 -14.95 0.1145
2022-05-16 2022-03-31 13F T-MOBILE US EQU 872590104 34,085 -20,559 -37.62 4,375 -30.97 0.1168
2022-02-15 2021-12-31 13F T-MOBILE US EQU 872590104 54,644 43,930 410.02 6,338 362.97 0.1211
2021-11-15 2021-09-30 13F T-MOBILE US EQU 872590104 10,714 -805 -6.99 1,369 -17.93 0.0566
2021-08-16 2021-06-30 13F T-MOBILE US EQU 872590104 11,519 -617 -5.08 1,668 9.66 0.0559
2021-05-14 2021-03-31 13F T-MOBILE US EQU 872590104 12,136 564 4.87 1,521 -2.50 0.0477
2021-02-12 2020-12-31 13F T-MOBILE US EQU 872590104 11,572 715 6.59 1,560 25.60 0.0484
2020-11-13 2020-09-30 13F T-MOBILE US EQU 872590104 10,857 -342 -3.05 1,242 6.52 0.0403
2020-08-13 2020-06-30 13F T-MOBILE US EQU 872590104 11,199 3,252 40.92 1,166 74.81 0.0401
2020-05-15 2020-03-31 13F T MOBILE US COMMON 872590104 7,947 -7,305 -47.90 667 -44.23 0.0261
2020-02-14 2019-12-31 13F T MOBILE US COMMON 872590104 15,252 -16,066 -51.30 1,196 -51.52 0.0217
2019-11-14 2019-09-30 13F T MOBILE US COMMON 872590104 31,318 0 0.00 2,467 6.24 0.0424
2019-08-14 2019-06-30 13F T MOBILE US COMMON 872590104 31,318 11,678 59.46 2,322 71.11 0.0415
2019-05-20 2019-03-31 13F T MOBILE US COMMON 872590104 19,640 4,888 33.13 1,357 44.67 0.0366
2019-02-13 2018-12-31 13F T MOBILE US COMMON 872590104 14,752 14,752 938 0.0308
2017-11-14 2017-09-30 13F T MOBILE US COMMON 872590104 0 -14,743 -100.00 0 -100.00
2017-08-14 2017-06-30 13F T MOBILE US COMMON 872590104 14,743 14,743 894 0.0475
2015-08-13 2015-06-30 13F T MOBILE US COMMON 872590104 0 -104,299 -100.00 0 -100.00
2015-05-15 2015-03-31 13F T MOBILE US COMMON 872590104 104,299 -361,727 -77.62 3,305 -73.68 0.2766
2015-02-13 2014-12-31 13F T MOBILE US COMMON 872590104 466,026 -76,900 -14.16 12,555 -19.90 0.9616
2014-11-14 2014-09-30 13F T-MOBILE US COMMON 872590104 542,926 542,926 15,674 0.7132
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.