T-Mobile 美國公司
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionSoftbank Group Corp
Latest Disclosed Ownership10,000,000 shares
Latest Disclosed Value $ 2,100,300,000
Softbank Group Corp reports 64.92% decrease in ownership of TMUS / T-Mobile US, Inc.

On May 15, 2026 - Softbank Group Corp filed a 13F-HR form disclosing ownership of 10,000,000 shares of T-Mobile US, Inc. (MX:TMUS) valued at $2,100,300,000 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 28,503,696 shares of T-Mobile US, Inc.. This represents a change in shares of -64.92% 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 10,000,000 -18,503,696 -64.92 2,100,300 -63.71 18.4070
2026-02-17 2025-12-31 13F T-MOBILE US COM 872590104 28,503,696 -16,671,036 -36.90 5,787,390 -46.48 37.4153
2025-11-14 2025-09-30 13F T-MOBILE US COM 872590104 45,174,732 -18,686,333 -29.26 10,813,927 -28.93 41.6386
2025-08-14 2025-06-30 13F T-MOBILE US COM 872590104 63,861,065 -21,500,000 -25.19 15,215,537 -33.17 61.0109
2025-05-15 2025-03-31 13F T-MOBILE US COM 872590104 85,361,065 0 0.00 22,766,650 20.83 77.6864
2025-02-14 2024-12-31 13F T-MOBILE US COM 872590104 85,361,065 0 0.00 18,841,748 6.96 80.6360
2024-11-14 2024-09-30 13F T-MOBILE US COM 872590104 85,361,065 0 0.00 17,615,109 17.13 80.2605
2024-11-14 2024-06-30 13F/A-1 T-MOBILE US COM 872590104 85,361,065 -6,728,701 -7.31 15,038,912 0.05 75.5279
2024-08-14 2024-06-30 13F T-MOBILE US COM 872590104 85,361,065 -6,728,701 15,038,912 78.3517
2024-05-15 2024-03-31 13F T-MOBILE US COM 872590104 92,089,766 0 0.00 15,030,892 1.80 78.8691
2024-02-14 2023-12-31 13F T-MOBILE US COM 872590104 92,089,766 48,751,557 112.49 14,764,752 143.26 79.6168
2024-02-14 2023-09-30 13F/A-1 T-MOBILE US COM 872590104 43,338,209 0 0.00 6,069,516 0.83 66.8631
2023-11-14 2023-09-30 13F T-MOBILE US COM 872590104 43,338,209 0 6,069,516 71.5607
2023-08-14 2023-06-30 13F T-MOBILE US COM 872590104 43,338,209 3,566,400 8.97 6,019,677 4.50 67.4641
2023-05-15 2023-03-31 13F T-MOBILE US COM 872590104 39,771,809 0 0.00 5,760,549 3.46 74.2088
2023-02-14 2022-12-31 13F T-MOBILE US COM 872590104 39,771,809 0 0.00 5,568,053 4.35 83.5422
2022-11-14 2022-09-30 13F T-MOBILE US COM 872590104 39,771,809 0 0.00 5,336,184 -0.28 78.9742
2022-08-15 2022-06-30 13F T-MOBILE US COM 872590104 39,771,809 -21,153,145 -34.72 5,350,899 -31.57 68.3166
2022-09-21 2022-03-31 13F/A-1 T-MOBILE US COM 872590104 60,924,954 0 0.00 7,819,718 10.67 78.3022
2022-05-16 2022-03-31 13F T-MOBILE US COM 872590104 60,924,954 0 7,819,718 79.6482
2022-09-21 2021-12-31 13F/A-1 T-MOBILE US COM 872590104 60,924,954 0 0.00 7,066,076 -9.22 65.7049
2022-02-14 2021-12-31 13F T-MOBILE US COM 872590104 60,924,954 0 7,066,076 66.9904
2022-02-22 2021-09-30 13F/A-1 T-MOBILE US COM 872590104 60,924,954 -45,366,669 -42.68 7,783,772 -49.44 69.1159
2021-11-15 2021-09-30 13F T-MOBILE US COM 872590104 60,924,954 -45,366,669 7,783,772 66.8497
2021-11-15 2021-06-30 13F/A-1 T-MOBILE US COM 872590104 106,291,623 106,291,623 15,394,216 15.60 79.6272
2021-08-16 2021-06-30 13F T-MOBILE US COM 872590104 0 0 15,394,216 74.7870
2021-05-17 2021-03-31 13F T-MOBILE US COM 872590104 0 -106,291,623 -100.00 13,317,277 -7.09 91.3459
2021-02-16 2020-12-31 13F T-MOBILE US COM 872590104 106,291,623 0 0.00 14,333,425 17.92 89.8514
2020-11-12 2020-09-30 13F T-Mobile US COM 872590104 106,291,623 -24,750,000 -18.89 12,155,210 -10.94 94.0735
2020-08-17 2020-06-30 13F T-MOBILE US COM 872590104 131,041,623 131,041,623 13,648,000 77.9088
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.