T-Mobile US, Inc.
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership506,466 shares
Latest Disclosed Value $ 106,373,053
Engineers Gate Manager LP reports 780.61% increase in ownership of TMUS / T-Mobile US, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 506,466 shares of T-Mobile US, Inc. (MX:TMUS) valued at $106,373,053 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 57,513 shares of T-Mobile US, Inc.. This represents a change in shares of 780.61% 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)
2026-05-15 2026-03-31 13F T-MOBILE US COM 872590104 506,466 448,953 780.61 106,373 810.96 1.3296
2026-02-17 2025-12-31 13F T-MOBILE US COM 872590104 57,513 -207,240 -78.28 11,677 -81.58 0.1385
2025-11-14 2025-09-30 13F T-MOBILE US COM 872590104 264,753 194,785 278.39 63,377 280.18 0.7256
2025-08-14 2025-06-30 13F T-MOBILE US COM 872590104 69,968 -13,794 -16.47 16,671 -25.38 0.2074
2025-05-15 2025-03-31 13F T-MOBILE US COM 872590104 83,762 31,291 59.63 22,340 92.90 0.3766
2025-02-14 2024-12-31 13F T-MOBILE US COM 872590104 52,471 23,926 83.82 11,582 96.62 0.2016
2024-11-14 2024-09-30 13F T-MOBILE US COM 872590104 28,545 15,119 112.61 5,891 149.05 0.1150
2024-08-14 2024-06-30 13F T-MOBILE US COM 872590104 13,426 13,426 2,365 0.0533
2023-11-14 2023-09-30 13F T-MOBILE US COM 872590104 0 -67,453 -100.00 0 -100.00
2023-08-14 2023-06-30 13F T-MOBILE US COM 872590104 67,453 43,660 183.50 9,369 171.88 0.3542
2023-05-15 2023-03-31 13F T-MOBILE US COM 872590104 23,793 23,793 3,446 0.1440
2023-02-14 2022-12-31 13F T-MOBILE US COM 872590104 0 -12,420 -100.00 0 -100.00
2022-11-14 2022-09-30 13F T-MOBILE US COM 872590104 12,420 -77,031 -86.12 1,666 -86.16 0.1036
2022-08-15 2022-06-30 13F T-MOBILE US COM 872590104 89,451 -12,527 -12.28 12,035 -8.05 0.4411
2022-05-16 2022-03-31 13F T-MOBILE US COM 872590104 101,978 26,846 35.73 13,089 50.21 0.5122
2022-02-14 2021-12-31 13F T-MOBILE US COM 872590104 75,132 75,132 8,714 0.3919
2021-05-17 2021-03-31 13F T-MOBILE US COM 872590104 0 -55,556 -100.00 0 -100.00
2021-02-16 2020-12-31 13F T-MOBILE US COM 872590104 55,556 42,732 333.22 7,492 410.70 0.3249
2020-11-16 2020-09-30 13F T-MOBILE US COM 872590104 12,824 10,000 354.11 1,467 398.98 0.0688
2020-08-17 2020-06-30 13F T-MOBILE US COM 872590104 2,824 -4,589 -61.90 294 -52.73 0.0150
2020-05-15 2020-03-31 13F T MOBILE US COM 872590104 7,413 -7,916 -51.64 622 -48.25 0.0448
2020-02-14 2019-12-31 13F T MOBILE US COM 872590104 15,329 15,329 1,202 0.0529
2019-11-14 2019-09-30 13F T MOBILE US COM 872590104 0 -58,290 -100.00 0 -100.00
2019-08-14 2019-06-30 13F T MOBILE US COM 872590104 58,290 6,847 13.31 4,321 21.55 0.2385
2019-05-15 2019-03-31 13F T MOBILE US COM 872590104 51,443 46,631 969.06 3,555 1,061.76 0.2153
2019-02-14 2018-12-31 13F T MOBILE US COM 872590104 4,812 4,812 306 0.0245
2018-11-01 2018-09-30 13F T MOBILE US COM 872590104 0 -6,600 -100.00 0 -100.00
2018-08-03 2018-06-30 13F T MOBILE US COM 872590104 6,600 6,600 394 0.0307
2018-05-07 2018-03-31 13F T MOBILE US COM 872590104 0 -64,184 -100.00 0 -100.00
2018-02-01 2017-12-31 13F T MOBILE US COM 872590104 64,184 10,331 19.18 4,076 22.73 0.2798
2017-11-13 2017-09-30 13F T MOBILE US COM 872590104 53,853 42,861 389.93 3,321 398.65 0.2794
2017-08-10 2017-06-30 13F T MOBILE US COM 872590104 10,992 2,593 30.87 666 22.88 0.0600
2017-05-05 2017-03-31 13F T MOBILE US COM 872590104 8,399 -23,515 -73.68 542 -70.46 0.0538
2017-02-10 2016-12-31 13F T MOBILE US COM 872590104 31,914 -59,663 -65.15 1,835 -57.11 0.1969
2016-11-09 2016-09-30 13F T MOBILE US COM 872590104 91,577 -29,253 -24.21 4,278 -18.17 0.4455
2016-08-11 2016-06-30 13F T MOBILE US COM 872590104 120,830 11,529 10.55 5,228 24.89 0.3752
2016-05-09 2016-03-31 13F T MOBILE US COM 872590104 109,301 109,301 0.00 4,186 0.3264
2016-02-05 2015-12-31 13F T MOBILE US COM 872590104 0 -128,648 -100.00 0 -100.00
2015-11-16 2015-09-30 13F T MOBILE US COM 872590104 128,648 73,661 133.96 5,121 140.20 0.4361
2015-08-14 2015-06-30 13F T MOBILE US COM 872590104 54,987 54,987 0.00 2,132 0.2087
2015-05-15 2015-03-31 13F T MOBILE US COM 872590104 0 -21,844 -100.00 0 -100.00
2015-02-17 2014-12-31 13F T MOBILE US COM 872590104 21,844 21,844 588 0.1674
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.