T-Mobile US, Inc.
MX ˙ BMV ˙ US8725901040
SecurityMX:TMUS / T-Mobile US, Inc.
InstitutionSquarepoint Ops LLC
Latest Disclosed Ownership993,469 shares
Latest Disclosed Value $ 208,658,294
Squarepoint Ops LLC ownership in TMUS / T-Mobile US, Inc.

On May 15, 2026 - Squarepoint Ops LLC filed a 13F-HR form disclosing ownership of 993,469 shares of T-Mobile US, Inc. (MX:TMUS) valued at $208,658,294 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,235,312 shares of T-Mobile US, Inc.. This represents a change in shares of -19.58% during the quarter.

Squarepoint Ops 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 227,400 of underlying shares valued at $47,760,822 USD and put options representing 202,200 of underlying shares valued at $42,468,066 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.

MX: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)
2026-05-15 2026-03-31 13F T-MOBILE US COM 872590104 993,469 -241,843 -19.58 208,658 -16.81 0.2451
2026-02-13 2025-12-31 13F T-MOBILE US COM 872590104 1,235,312 1,034,704 515.78 250,818 422.31 0.2669
2025-11-14 2025-09-30 13F T-MOBILE US COM 872590104 200,608 -222,073 -52.54 48,022 -52.32 0.0482
2025-08-27 2025-06-30 13F/A-1 T-MOBILE US COM 872590104 422,681 219,297 107.82 100,708 85.66 0.1047
2025-08-14 2025-06-30 13F T-MOBILE US COM 872590104 422,681 219,297 100,708 0.1047
2025-08-27 2025-03-31 13F/A-1 T-MOBILE US COM 872590104 203,384 -417,659 -67.25 54,245 -60.43 0.0658
2025-05-15 2025-03-31 13F T-MOBILE US COM 872590104 203,384 -417,659 54,245 0.0658
2025-02-14 2024-12-31 13F T-MOBILE US COM 872590104 621,043 545,183 718.67 137,083 775.70 0.1352
2024-11-14 2024-09-30 13F T-MOBILE US COM 872590104 75,860 -250,045 -76.72 15,654 -72.74 0.0245
2024-08-14 2024-06-30 13F T-MOBILE US COM 872590104 325,905 -6,870 -2.06 57,418 5.71 0.0949
2024-05-15 2024-03-31 13F T-MOBILE US COM 872590104 332,775 -63,491 -16.02 54,316 -14.51 0.0935
2024-02-14 2023-12-31 13F T-MOBILE US COM 872590104 396,266 -3,328 -0.83 63,533 13.53 0.1202
2023-11-14 2023-09-30 13F T-MOBILE US COM 872590104 399,594 -98,392 -19.76 55,963 -19.09 0.1382
2023-08-14 2023-06-30 13F T-MOBILE US COM 872590104 497,986 483,327 3,297.13 69,170 3,158.13 0.2118
2023-05-15 2023-03-31 13F T-MOBILE US COM 872590104 14,659 -234,703 -94.12 2,123 -93.92 0.0087
2023-02-14 2022-12-31 13F T-MOBILE US COM 872590104 249,362 225,068 926.43 34,911 970.86 0.1380
2022-11-14 2022-09-30 13F T-MOBILE US COM 872590104 24,294 24,294 3,260 0.0165
2022-05-16 2022-03-31 13F T-MOBILE US COM 872590104 0 -207,692 -100.00 0 -100.00
2022-02-14 2021-12-31 13F T-MOBILE US COM 872590104 207,692 84,551 68.66 24,088 53.11 0.0637
2021-11-15 2021-09-30 13F T-MOBILE US COM 872590104 123,141 114,652 1,350.59 15,732 1,180.07 0.0452
2021-08-16 2021-06-30 13F T-MOBILE US COM 872590104 8,489 -224,267 -96.35 1,229 -95.79 0.0047
2021-05-17 2021-03-31 13F T-MOBILE US COM 872590104 232,756 73,052 45.74 29,162 35.41 0.1709
2021-02-16 2020-12-31 13F T-MOBILE US COM 872590104 159,704 106,004 197.40 21,536 250.69 0.1607
2020-11-16 2020-09-30 13F T-MOBILE US COM 872590104 53,700 53,700 6,141 0.0828
2020-05-15 2020-03-31 13F T MOBILE US COM 872590104 0 -496,756 -100.00 0 -100.00
2020-02-14 2019-12-31 13F T MOBILE US COM 872590104 496,756 463,320 1,385.69 38,956 1,378.97 0.2317
2019-11-14 2019-09-30 13F T MOBILE US COM 872590104 33,436 -75,457 -69.29 2,634 -67.37 0.0235
2019-08-14 2019-06-30 13F T MOBILE US COM 872590104 108,893 108,893 8,073 0.0787
2019-02-14 2018-12-31 13F T MOBILE US COM 872590104 0 -23,800 -100.00 0 -100.00
2018-11-14 2018-09-30 13F T MOBILE US COM 872590104 23,800 23,800 1,670 0.0200
2018-08-14 2018-06-30 13F T MOBILE US COM 872590104 0 -76,895 -100.00 0 -100.00
2018-05-15 2018-03-31 13F T MOBILE US COM 872590104 76,895 -147,131 -65.68 4,694 -67.01 0.0745
2018-02-14 2017-12-31 13F T MOBILE US COM 872590104 224,026 -101,885 -31.26 14,228 -29.20 0.2479
2017-11-14 2017-09-30 13F T MOBILE US COM 872590104 325,911 95,090 41.20 20,096 43.62 0.3866
2017-08-14 2017-06-30 13F T MOBILE US COM 872590104 230,821 221,721 2,436.49 13,992 2,279.59 0.2753
2017-05-15 2017-03-31 13F T MOBILE US COM 872590104 9,100 -31,635 -77.66 588 -74.90 0.0162
2017-02-14 2016-12-31 13F T MOBILE US COM 872590104 40,735 1,935 4.99 2,343 29.23 0.0958
2016-11-14 2016-09-30 13F T MOBILE US COM 872590104 38,800 14,300 58.37 1,813 71.04 0.1204
2016-08-15 2016-06-30 13F T MOBILE US COM 872590104 24,500 24,500 0.00 1,060 0.0662
2016-05-16 2016-03-31 13F T MOBILE US COM 872590104 0 -44,700 -100.00 0 -100.00
2016-02-16 2015-12-31 13F T MOBILE US COM 872590104 44,700 -700 -1.54 1,749 -3.21 0.1918
2015-11-16 2015-09-30 13F T MOBILE US COM 872590104 45,400 12,900 39.69 1,807 43.41 0.4509
2015-08-14 2015-06-30 13F T MOBILE US COM 872590104 32,500 32,500 1,260 0.4089
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
(%)
2026-05-15 2026-03-31 13F T-MOBILE US COM Call 227,400 14.04 47,761 17.97 n/a n/a n/a
2026-02-13 2025-12-31 13F T-MOBILE US COM Call 199,400 183.24 40,486 140.24 n/a n/a n/a
2025-11-14 2025-09-30 13F T-MOBILE US COM Call 70,400 -54.61 16,852 -54.40 n/a n/a n/a
2025-08-27 2025-06-30 13F/A T-MOBILE US COM Call 155,100 9.07 36,954 -2.56 n/a n/a n/a
2025-08-14 2025-06-30 13F T-MOBILE US COM Call 155,100 36,954 n/a n/a n/a
2025-08-27 2025-03-31 13F/A T-MOBILE US COM Call 142,200 -14.03 37,926 3.88 n/a n/a n/a
2025-05-15 2025-03-31 13F T-MOBILE US COM Call 142,200 37,926 n/a n/a n/a
2025-02-14 2024-12-31 13F T-MOBILE US COM Call 165,400 42.34 36,509 52.25 n/a n/a n/a
2024-11-14 2024-09-30 13F T-MOBILE US COM Call 116,200 11.30 23,979 30.37 n/a n/a n/a
2024-08-14 2024-06-30 13F T-MOBILE US COM Call 104,400 -40.55 18,393 -35.83 n/a n/a n/a
2024-05-15 2024-03-31 13F T-MOBILE US COM Call 175,600 -64.00 28,661 -63.35 n/a n/a n/a
2024-02-14 2023-12-31 13F T-MOBILE US COM Call 487,800 8,167.80 78,209 9,368.28 n/a n/a n/a
2023-11-14 2023-09-30 13F T-MOBILE US COM Call 5,900 -77.65 826 -77.47 n/a n/a n/a
2023-08-14 2023-06-30 13F T-MOBILE US COM Call 26,400 33.33 3,667 27.87 n/a n/a n/a
2023-05-15 2023-03-31 13F T-MOBILE US COM Call 19,800 -70.36 2,868 -69.34 n/a n/a n/a
2023-02-14 2022-12-31 13F T-MOBILE US COM Call 66,800 173.77 9,352 185.64 n/a n/a n/a
2022-11-14 2022-09-30 13F T-MOBILE US COM Call 24,400 12.44 3,274 12.12 n/a n/a n/a
2022-08-15 2022-06-30 13F T-MOBILE US COM Call 21,700 -34.04 2,920 -30.85 n/a n/a n/a
2022-05-16 2022-03-31 13F T-MOBILE US COM Call 32,900 -51.83 4,223 -46.69 n/a n/a n/a
2022-02-14 2021-12-31 13F T-MOBILE US COM Call 68,300 -42.85 7,921 -48.12 n/a n/a n/a
2021-11-15 2021-09-30 13F T-MOBILE US COM Call 119,500 -1.73 15,267 -13.31 n/a n/a n/a
2021-08-16 2021-06-30 13F T-MOBILE US COM Call 121,600 166.08 17,611 207.56 n/a n/a n/a
2021-05-17 2021-03-31 13F T-MOBILE US COM Call 45,700 1,205.71 5,726 1,113.14 n/a n/a n/a
2021-02-16 2020-12-31 13F T-MOBILE US COM Call 3,500 472 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
(%)
2026-05-15 2026-03-31 13F T-MOBILE US COM Put 202,200 51.57 42,468 56.80 n/a n/a n/a
2026-02-13 2025-12-31 13F T-MOBILE US COM Put 133,400 164.68 27,086 124.51 n/a n/a n/a
2025-11-14 2025-09-30 13F T-MOBILE US COM Put 50,400 -48.78 12,065 -48.54 n/a n/a n/a
2025-08-27 2025-06-30 13F/A T-MOBILE US COM Put 98,400 -20.58 23,445 -29.05 n/a n/a n/a
2025-08-14 2025-06-30 13F T-MOBILE US COM Put 98,400 23,445 n/a n/a n/a
2025-08-27 2025-03-31 13F/A T-MOBILE US COM Put 123,900 -53.84 33,045 -44.22 n/a n/a n/a
2025-05-15 2025-03-31 13F T-MOBILE US COM Put 123,900 33,045 n/a n/a n/a
2025-02-14 2024-12-31 13F T-MOBILE US COM Put 268,400 45.63 59,244 55.77 n/a n/a n/a
2024-11-14 2024-09-30 13F T-MOBILE US COM Put 184,300 39.83 38,032 63.79 n/a n/a n/a
2024-08-14 2024-06-30 13F T-MOBILE US COM Put 131,800 -30.19 23,221 -24.65 n/a n/a n/a
2024-05-15 2024-03-31 13F T-MOBILE US COM Put 188,800 331.05 30,816 338.84 n/a n/a n/a
2024-02-14 2023-12-31 13F T-MOBILE US COM Put 43,800 7,022 n/a n/a n/a
2023-11-14 2023-09-30 13F T-MOBILE US COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-08-14 2023-06-30 13F T-MOBILE US COM Put 33,900 32.94 4,709 27.48 n/a n/a n/a
2023-05-15 2023-03-31 13F T-MOBILE US COM Put 25,500 -76.37 3,693 -75.55 n/a n/a n/a
2023-02-14 2022-12-31 13F T-MOBILE US COM Put 107,900 106.31 15,106 115.28 n/a n/a n/a
2022-11-14 2022-09-30 13F T-MOBILE US COM Put 52,300 -7.27 7,017 -7.53 n/a n/a n/a
2022-08-15 2022-06-30 13F T-MOBILE US COM Put 56,400 71.43 7,588 79.68 n/a n/a n/a
2022-05-16 2022-03-31 13F T-MOBILE US COM Put 32,900 -88.45 4,223 -87.22 n/a n/a n/a
2022-02-14 2021-12-31 13F T-MOBILE US COM Put 284,900 -30.50 33,043 -36.90 n/a n/a n/a
2021-11-15 2021-09-30 13F T-MOBILE US COM Put 409,900 47.55 52,369 30.16 n/a n/a n/a
2021-08-16 2021-06-30 13F T-MOBILE US COM Put 277,800 37.39 40,234 58.81 n/a n/a n/a
2021-05-17 2021-03-31 13F T-MOBILE US COM Put 202,200 998.91 25,334 921.12 n/a n/a n/a
2021-02-16 2020-12-31 13F T-MOBILE US COM Put 18,400 2,481 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.