T-Mobile US, Inc.
US ˙ NasdaqGS ˙ US8725901040

SecurityTMUS / T-Mobile US, Inc.
InstitutionSigma Planning Corp
Latest Disclosed Ownership4,408 shares
Latest Disclosed Value $ 925,821
Sigma Planning Corp reports 11.33% decrease in ownership of TMUS / T-Mobile US, Inc.

On May 4, 2026 - Sigma Planning Corp filed a 13F-HR form disclosing ownership of 4,408 shares of T-Mobile US, Inc. (US:TMUS) valued at $925,812 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 4,971 shares of T-Mobile US, Inc.. This represents a change in shares of -11.33% during the quarter. The current value of the position is $799,832 USD.

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)
2026-05-04 2026-03-31 13F T-MOBILE US COM 872590104 4,408 -563 -11.33 926 -8.33 0.0257
2026-01-30 2025-12-31 13F T-MOBILE US COM 872590104 4,971 -6,885 -58.07 1,009 -64.45 0.0279
2025-11-10 2025-09-30 13F T-MOBILE US COM 872590104 11,856 664 5.93 2,838 6.45 0.0807
2025-08-05 2025-06-30 13F T-MOBILE US COM 872590104 11,192 324 2.98 2,667 -8.01 0.0802
2025-05-02 2025-03-31 13F T-MOBILE US COM 872590104 10,868 2,678 32.70 2,899 60.38 0.0924
2025-02-03 2024-12-31 13F T-MOBILE US COM 872590104 8,190 396 5.08 1,808 12.38 0.0568
2024-11-04 2024-09-30 13F T-MOBILE US COM 872590104 7,794 1,869 31.54 1,608 54.17 0.0493
2024-08-06 2024-06-30 13F T-MOBILE US COM 872590104 5,925 -2 -0.03 1,044 7.86 0.0331
2024-05-02 2024-03-31 13F T-MOBILE US COM 872590104 5,927 4,570 336.77 968 345.62 0.0304
2024-02-01 2023-12-31 13F T-MOBILE US COM 872590104 1,357 -4,846 -78.12 218 -75.00 0.0170
2023-11-06 2023-09-30 13F T-MOBILE US COM 872590104 6,203 572 10.16 869 11.00 0.0326
2023-08-02 2023-06-30 13F T-MOBILE US COM 872590104 5,631 -1,398 -19.89 782 -23.18 0.0281
2023-05-08 2023-03-31 13F T-MOBILE US COM 872590104 7,029 372 5.59 1,018 9.34 0.0338
2023-01-24 2022-12-31 13F T-MOBILE US COM 872590104 6,657 884 15.31 932 20.13 0.0333
2022-11-10 2022-09-30 13F T-MOBILE US COM 872590104 5,773 87 1.53 775 1.31 0.0295
2022-08-11 2022-06-30 13F T-MOBILE US COM 872590104 5,686 41 0.73 765 5.52 0.0266
2022-04-20 2022-03-31 13F T-MOBILE US COM 872590104 5,645 -2,241 -28.42 725 -20.77 0.0217
2022-02-02 2021-12-31 13F T-MOBILE US INC COM Stock 872590104 7,886 -293 -3.58 915 -12.44 0.0255
2021-10-28 2021-09-30 13F T-MOBILE US COM 872590104 8,179 40 0.49 1,045 -11.37 0.0314
2021-08-13 2021-06-30 13F T-MOBILE US INC COM Stock 872590104 8,139 721 9.72 1,179 26.91 0.0351
2021-05-06 2021-03-31 13F T-MOBILE US INC COM Stock 872590104 7,418 -2,654 -26.35 929 -31.59 0.0297
2021-02-09 2020-12-31 13F T-MOBILE US COM 872590104 10,072 407 4.21 1,358 22.90 0.0462
2020-11-03 2020-09-30 13F T-MOBILE US COM 872590104 9,665 1,008 11.64 1,105 22.51 0.0437
2020-07-31 2020-06-30 13F T-MOBILE US COM 872590104 8,657 1,939 28.86 902 59.93 0.0396
2020-05-01 2020-03-31 13F T MOBILE US COM 872590104 6,718 139 2.11 564 9.30 0.0335
2020-02-03 2019-12-31 13F T MOBILE US COM 872590104 6,579 112 1.73 516 1.38 0.0218
2019-11-01 2019-09-30 13F T MOBILE US COM 872590104 6,467 -208 -3.12 509 2.83 0.0244
2019-08-01 2019-06-30 13F T MOBILE US COM 872590104 6,675 -122 -1.79 495 5.32 0.0255
2019-05-01 2019-03-31 13F T MOBILE US COM 872590104 6,797 -2,695 -28.39 470 -22.19 0.0267
2019-01-31 2018-12-31 13F T MOBILE US COM 872590104 9,492 2,364 33.16 604 20.80 0.0439
2018-11-07 2018-09-30 13F T MOBILE US COM 872590104 7,128 7,128 500 0.0294
2016-01-20 2015-12-31 13F T MOBILE US COM 872590104 0 -8,844 -100.00 0 -100.00
2015-11-02 2015-09-30 13F T MOBILE US COM 872590104 8,844 8,844 352 0.0558
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.