T-MOBILE US INC (TMUS) Institutional Shareholders
T-MOBILE US INC (TMUS) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $85.43B in TMUS holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of TMUS tracked by InsiderSet, reporting ownership valued at approximately $8.22B in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $6.76B, representing an estimated loss of -17.77% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 44% of the total disclosed TMUS value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, State Street Corp, and several other long-term asset managers with concentrated positions in T-MOBILE US INC (TMUS).
This page ranks the largest institutional TMUS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
1,655
Total Reported Value
$85.43B
Largest Holder
Blackrock, Inc.
Largest Position
$8.22B
Insider Transactions (90d)
10
Latest Filing Quarter
Q2 2026
New Institutional Positions
33
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.14% | 39,115,867 | $8,215,505,457 | $6,755,701,390 | -$1,459,804,067 | -17.77% | |
| Vanguard Capital Management Llc | 0.16% | 29,726,319 | $6,243,418,779 | $5,134,032,554 | -$1,109,386,225 | -17.77% | |
| State Street Corp | 0.17% | 23,719,298 | $4,981,764,159 | $4,096,559,958 | -$885,204,201 | -17.77% | |
| Wellington Management Group Llp | 0.67% | 17,200,244 | $3,612,567,247 | $2,970,654,141 | -$641,913,106 | -17.77% | |
| Morgan Stanley | 0.18% | 14,387,032 | $3,021,708,941 | $2,484,784,297 | -$536,924,644 | -17.77% | |
| Fmr Llc | 0.14% | 12,529,473 | $2,631,565,064 | $2,163,965,282 | -$467,599,782 | -17.77% | |
| Geode Capital Management, Llc | 0.16% | 12,431,706 | $2,601,707,350 | $2,147,079,943 | -$454,627,407 | -17.47% | |
| Softbank Group Corp. | 18.41% | 10,000,000 | $2,100,300,000 | $1,727,100,000 | -$373,200,000 | -17.77% | |
| Vanguard Portfolio Management Llc | 0.11% | 9,935,386 | $2,086,729,122 | $1,715,940,516 | -$370,788,606 | -17.77% | |
| Invesco Ltd. | 0.26% | 8,111,959 | $1,703,754,831 | $1,401,016,439 | -$302,738,392 | -17.77% | |
| Franklin Resources Inc | 0.36% | 7,048,146 | $1,480,322,083 | $1,217,285,296 | -$263,036,787 | -17.77% | |
| Barclays Plc | 0.50% | 6,610,449 | $1,388,392,607 | $1,141,690,647 | -$246,701,960 | -17.77% | |
| Goldman Sachs Group Inc | 0.17% | 6,279,935 | $1,318,974,849 | $1,084,607,574 | -$234,367,275 | -17.77% | |
| Dodge & Cox Stock Fund | V. D. Dodge, E. M. Cox | 0.71% | 6,157,799 | $1,293,322,524 | $1,063,513,465 | -$229,809,059 | -17.77% |
| Canada Pension Plan Investment Board | 0.82% | 6,062,911 | $1,273,393,197 | $1,047,125,359 | -$226,267,838 | -17.77% | |
| Capital International Investors | 0.30% | 6,033,107 | $1,267,688,190 | $1,041,977,910 | -$225,710,280 | -17.80% | |
| Bank Of New York Mellon Corp | 0.20% | 5,113,509 | $1,073,990,136 | $883,154,139 | -$190,835,997 | -17.77% | |
| Northern Trust Corp | 0.13% | 4,594,338 | $964,948,811 | $793,488,116 | -$171,460,695 | -17.77% | |
| Jane Street Group, Llc | 1.01% | 4,468,259 | $938,468,437 | $771,713,012 | -$166,755,425 | -17.77% | |
| Nuveen, Llc | 0.25% | 4,371,891 | $918,228,162 | $755,069,295 | -$163,158,867 | -17.77% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.18% | 4,032,597 | $846,966,347 | $696,469,828 | -$150,496,519 | -17.77% | |
| Neuberger Berman Group Llc | 0.63% | 3,936,458 | $826,900,755 | $679,865,661 | -$147,035,094 | -17.78% | |
| Two Sigma Investments, Lp | 0.68% | 3,891,468 | $817,325,024 | $672,095,438 | -$145,229,586 | -17.77% | |
| Dimensional Fund Advisors Lp | 0.17% | 3,813,709 | $801,211,380 | $658,665,681 | -$142,545,699 | -17.79% | |
| Charles Schwab Investment Management Inc | 0.12% | 3,725,281 | $782,420,769 | $643,393,282 | -$139,027,487 | -17.77% | |
| Amundi | 0.21% | 3,679,795 | $772,867,344 | $635,537,394 | -$137,329,950 | -17.77% | |
| Ameriprise Financial Inc | 0.18% | 3,678,860 | $772,673,715 | $635,375,911 | -$137,297,804 | -17.77% | |
| Legal & General Group Plc | 0.17% | 3,502,746 | $735,681,742 | $604,959,262 | -$130,722,480 | -17.77% | |
| Storebrand Asset Management As | 0.24% | 5,399,034 | $731,613,922 | $932,467,162 | +$200,853,240 | +27.45% | |
| Deutsche Bank Ag\ | 0.23% | 3,338,296 | $701,142,309 | $576,557,102 | -$124,585,207 | -17.77% | |
| Alliancebernstein L.P. | 0.22% | 3,417,824 | $693,954,985 | $590,292,383 | -$103,662,602 | -14.94% | |
| Ubs Group Ag | 0.12% | 3,299,280 | $692,947,779 | $569,818,649 | -$123,129,130 | -17.77% | |
| Clearbridge Investments, Llc | 0.58% | 3,171,930 | $666,200,360 | $547,824,030 | -$118,376,330 | -17.77% | |
| Bank Of America Corp | 0.05% | 3,153,473 | $662,323,897 | $544,636,322 | -$117,687,575 | -17.77% | |
| Viking Global Investors | Ole Andreas Halvorsen | 1.74% | 2,967,374 | $623,237,561 | $512,495,164 | -$110,742,397 | -17.77% |
| Aqr Capital Management Llc | 0.26% | 2,690,107 | $565,003,111 | $464,608,380 | -$100,394,731 | -17.77% | |
| Vanguard Fiduciary Trust Co | 0.14% | 2,641,971 | $554,893,169 | $456,294,811 | -$98,598,358 | -17.77% | |
| Citadel Advisors Llc | 0.37% | 2,512,094 | $527,615,103 | $433,863,755 | -$93,751,348 | -17.77% | |
| Royal Bank Of Canada | 0.10% | 2,503,456 | $525,802,000 | $432,371,886 | -$93,430,114 | -17.77% | |
| Boston Partners | 0.53% | 2,402,550 | $503,853,105 | $414,944,411 | -$88,908,695 | -17.65% | |
| Marshall Wace, Llp | 0.53% | 2,369,508 | $497,667,764 | $409,237,727 | -$88,430,037 | -17.77% | |
| Principal Financial Group Inc | 0.22% | 1,971,069 | $413,983,959 | $340,423,327 | -$73,560,632 | -17.77% | |
| Capital Research Global Investors | 0.06% | 1,814,581 | $381,120,621 | $313,396,285 | -$67,724,336 | -17.77% | |
| Pacer Advisors, Inc. | 0.97% | 1,755,286 | $368,662,719 | $303,155,445 | -$65,507,274 | -17.77% | |
| Raymond James Financial Inc | 0.11% | 1,728,290 | $364,829,427 | $298,492,966 | -$66,336,461 | -18.18% | |
| Victory Capital Management Inc | 0.23% | 1,732,888 | $363,958,482 | $299,287,086 | -$64,671,396 | -17.77% | |
| Assenagon Asset Management S.A. | 0.41% | 1,873,621 | $314,262,450 | $323,593,083 | +$9,330,633 | +2.97% | |
| Citigroup Inc | 0.20% | 1,490,552 | $313,060,595 | $257,433,236 | -$55,627,359 | -17.77% | |
| Millennium Management Llc | 0.23% | 1,488,585 | $312,647,508 | $257,093,515 | -$55,553,993 | -17.77% | |
| Swiss National Bank | 0.18% | 1,477,202 | $310,256,736 | $255,127,557 | -$55,129,179 | -17.77% |
Frequently asked questions about TMUS
Who owns the most TMUS stock?
The largest holders of TMUS are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for T-MOBILE US INC (TMUS).
Is TMUS widely held by superinvestors?
Many widely followed stocks like TMUS appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly TMUS is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.