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

SecurityTMUS / T-Mobile US, Inc.
InstitutionGts Securities Llc
Latest Disclosed Ownership5,121 shares
Latest Disclosed Value $ 1,075,564
Gts Securities Llc ownership in TMUS / T-Mobile US, Inc.

On May 14, 2026 - Gts Securities Llc filed a 13F-HR form disclosing ownership of 5,121 shares of T-Mobile US, Inc. (US:TMUS) valued at $1,075,564 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 13,865 shares of T-Mobile US, Inc.. This represents a change in shares of -63.07% during the quarter. The current value of the position is $912,050 USD.

Gts Securities Llc has a history of taking positions in derivatives of the underlying security (TMUS) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

TMUS / T-Mobile US, Inc. Historical Put/Call Ratio
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)
2026-05-14 2026-03-31 13F T-MOBILE US COM 872590104 5,121 -8,744 -63.07 1,076 -61.81 0.0380
2026-02-13 2025-12-31 13F T-MOBILE US COM 872590104 13,865 -14,308 -50.79 2,815 -58.26 0.0960
2025-11-14 2025-09-30 13F T-MOBILE US COM 872590104 28,173 25,164 836.29 6,744 841.90 0.2590
2025-08-08 2025-06-30 13F T-MOBILE US COM 872590104 3,009 -13,089 -81.31 717 -83.32 0.0320
2025-05-15 2025-03-31 13F T-MOBILE US COM 872590104 16,098 11,475 248.22 4,293 320.88 0.1858
2025-02-18 2024-12-31 13F T-MOBILE US COM 872590104 4,623 -70,603 -93.85 1,020 -93.43 0.0497
2024-11-13 2024-09-30 13F T-MOBILE US COM 872590104 75,226 36,312 93.31 15,524 126.45 0.0338
2024-08-14 2024-06-30 13F T-MOBILE US COM 872590104 38,914 -14,032 -26.50 6,856 -20.67 0.0146
2024-05-15 2024-03-31 13F T-MOBILE US COM 872590104 52,946 43,976 490.26 8,642 500.90 0.0159
2024-02-15 2023-12-31 13F T-MOBILE US COM 872590104 8,970 -4,833 -35.01 1,438 -25.61 0.0024
2023-11-15 2023-09-30 13F T-MOBILE US COM 872590104 13,803 10,759 353.45 1,933 358.06 0.0035
2023-08-16 2023-06-30 13F T-MOBILE US COM 872590104 3,044 3,044 423 0.0134
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-02-18 2024-12-31 13F T-MOBILE US COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-13 2024-09-30 13F T-MOBILE US COM Call 40,800 2.77 8,419 20.37 n/a n/a n/a
2024-08-14 2024-06-30 13F T-MOBILE US COM Call 39,700 29.32 6,994 39.60 n/a n/a n/a
2024-05-15 2024-03-31 13F T-MOBILE US COM Call 30,700 -77.23 5,011 -76.82 n/a n/a n/a
2024-02-15 2023-12-31 13F T-MOBILE US COM Call 134,800 -38.56 21,612 -29.66 n/a n/a n/a
2023-11-15 2023-09-30 13F T-MOBILE US COM Call 219,400 30,727 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-02-18 2024-12-31 13F T-MOBILE US COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-13 2024-09-30 13F T-MOBILE US COM Put 72,000 213.04 14,858 266.66 n/a n/a n/a
2024-08-14 2024-06-30 13F T-MOBILE US COM Put 23,000 -82.62 4,052 -81.24 n/a n/a n/a
2024-05-15 2024-03-31 13F T-MOBILE US COM Put 132,300 80.00 21,594 83.25 n/a n/a n/a
2024-02-15 2023-12-31 13F T-MOBILE US COM Put 73,500 -19.23 11,784 -7.53 n/a n/a n/a
2023-11-15 2023-09-30 13F T-MOBILE US COM Put 91,000 12,745 n/a n/a n/a
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.