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

SecurityTMUS / T-Mobile US, Inc.
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Parallel Advisors, LLC ownership in TMUS / T-Mobile US, Inc.

On June 2, 2026 - Parallel Advisors, LLC filed a 13F-HR/A form disclosing ownership of 0 shares of T-Mobile US, Inc. (US:TMUS) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 12,621 shares of T-Mobile US, Inc.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Parallel Advisors, 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 .

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)
2026-06-02 2026-03-31 13F/A-1 T-MOBILE US INC COM Stock 872590104 0 -12,621 -100.00 0 -100.00
2026-02-11 2025-12-31 13F T-MOBILE US INC COM Stock 872590104 12,621 667 5.58 2,563 -10.45 0.0469
2025-11-13 2025-09-30 13F T-MOBILE US INC COM Stock 872590104 11,954 -233 -1.91 2,862 -1.45 0.0524
2025-07-08 2025-06-30 13F T-MOBILE US INC COM Stock 872590104 12,187 108 0.89 2,904 -9.87 0.0580
2025-04-08 2025-03-31 13F T-MOBILE US INC COM Stock 872590104 12,079 -263 -2.13 3,221 18.25 0.0726
2025-02-10 2024-12-31 13F T-MOBILE US INC COM Stock 872590104 12,342 202 1.66 2,724 8.74 0.0613
2024-11-13 2024-09-30 13F T-MOBILE US INC COM Stock 872590104 12,140 935 8.34 2,505 26.90 0.0589
2024-08-08 2024-06-30 13F T-MOBILE US INC COM Stock 872590104 11,205 1,262 12.69 1,974 21.70 0.0506
2024-05-06 2024-03-31 13F T-MOBILE US INC COM Stock 872590104 9,943 501 5.31 1,623 7.20 0.0440
2024-02-12 2023-12-31 13F T-MOBILE US INC COM Stock 872590104 9,442 -1,727 -15.46 1,514 -3.26 0.0449
2024-05-20 2023-09-30 13F/A-1 T-MOBILE US INC COM Stock 872590104 11,169 1,437 14.77 1,564 15.77 0.0521
2023-11-14 2023-09-30 13F T-MOBILE US INC COM Stock 872590104 11,169 1,437 1,564 0.0521
2024-05-20 2023-06-30 13F/A-1 T-MOBILE US INC COM Stock 872590104 9,732 837 9.41 1,352 4.89 0.0435
2023-08-04 2023-06-30 13F T-MOBILE US INC COM Stock 872590104 9,732 837 1,352 0.0435
2024-05-20 2023-03-31 13F/A-1 T-MOBILE US INC COM Stock 872590104 8,895 1,440 19.32 1,288 23.49 0.0434
2023-04-25 2023-03-31 13F T-MOBILE US INC COM Stock 872590104 8,895 1,440 1,288 0.0434
2023-02-06 2022-12-31 13F T-MOBILE US INC COM Stock 872590104 7,455 741 11.04 1,044 15.76 0.0453
2022-11-10 2022-09-30 13F T-MOBILE US INC COM Stock 872590104 6,714 624 10.25 901 10.01 0.0415
2022-08-01 2022-06-30 13F T-MOBILE US INC COM Stock 872590104 6,090 659 12.13 819 17.34 0.0376
2022-04-28 2022-03-31 13F T-MOBILE US INC COM Stock 872590104 5,431 -447 -7.60 698 2.35 0.0277
2022-01-20 2021-12-31 13F T-MOBILE US INC COM Stock 872590104 5,878 -174 -2.88 682 -11.77 0.0253
2021-11-02 2021-09-30 13F/A-1 T-MOBILE US INC COM Stock 872590104 6,052 -131 -2.12 773 -13.63 0.0312
2021-08-06 2021-06-30 13F T-MOBILE US INC COM Stock 872590104 6,183 -570 -8.44 895 5.79 0.0379
2021-04-23 2021-03-31 13F T-MOBILE US INC COM Stock 872590104 6,753 394 6.20 846 -1.40 0.0399
2021-02-02 2020-12-31 13F T-MOBILE US INC COM Stock 872590104 6,359 -191 -2.92 858 14.55 0.0466
2020-10-27 2020-09-30 13F T-MOBILE US INC COM Stock 872590104 6,550 96 1.49 749 11.46 0.0463
2020-07-16 2020-06-30 13F T-MOBILE US INC COM Stock 872590104 6,454 938 17.01 672 45.45 0.0439
2020-04-27 2020-03-31 13F T-MOBILE US INC COM Stock 872590104 5,516 491 9.77 462 17.26 0.0374
2020-01-30 2019-12-31 13F T MOBILE US INC COM Stock 872590104 5,025 -962 -16.07 394 -16.53 0.0296
2019-11-01 2019-09-30 13F T MOBILE US INC COM Stock 872590104 5,987 159 2.73 472 9.26 0.0404
2019-08-05 2019-06-30 13F T MOBILE US INC COM Stock 872590104 5,828 -116 -1.95 432 5.11 0.0421
2019-05-01 2019-03-31 13F T MOBILE US INC COM Stock 872590104 5,944 298 5.28 411 14.80 0.0461
2019-02-05 2018-12-31 13F T MOBILE US INC COM Stock 872590104 5,646 102 1.84 358 -7.73 0.0499
2018-11-01 2018-09-30 13F T MOBILE US INC COM Stock 872590104 5,544 33 0.60 388 17.93 0.0482
2018-07-30 2018-06-30 13F T MOBILE US INC COM Stock 872590104 5,511 -1,152 -17.29 329 -19.16 0.0470
2018-05-08 2018-03-31 13F T MOBILE US INC COM Stock 872590104 6,663 1,116 20.12 407 15.63 0.0636
2018-02-13 2017-12-31 13F T MOBILE US INC COM Stock 872590104 5,547 5,187 1,440.83 352 1,660.00 0.0576
2017-11-15 2017-09-30 13F/A-1 T MOBILE US INC COM Stock 872590104 360 -113 -23.89 20 -31.03 0.0034
2017-08-07 2017-06-30 13F T MOBILE US INC COM Stock 872590104 473 56 13.43 29 7.41 0.0055
2017-05-12 2017-03-31 13F/A-1 T MOBILE US INC COM Stock 872590104 417 298 250.42 27 285.71 0.0054
2017-05-12 2017-03-31 13F T MOBILE US INC COM Stock 872590104 417 27
2017-02-14 2016-12-31 13F T MOBILE US INC COM Stock 872590104 119 119 7 0.0016
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
(%)
2022-01-19 2021-12-31 13F T-MOBILE US INC COM Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F T-MOBILE US INC COM Stock Call 6,183 895 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.