Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
1,681 institutional managers reported holding TMUS for the quarter ended Mar 31, 2026. Together they hold about 40% of shares outstanding; the top 10 hold 19%. 180 opened new positions; 180 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 44.54M | 4.04% | $9.35B | added +3.8% | ≤2013 |
| BlackRock | 39.12M | 3.55% | $8.22B | unchanged | ≤2013 |
| T. Rowe Price | 28.49M | 2.58% | $5.98B | added +2.5% | ≤2013 |
| State Street | 23.72M | 2.15% | $4.98B | trimmed -6.2% | ≤2013 |
| Wellington Management | 17.20M | 1.56% | $3.61B | added +3.7% | ≤2013 |
| Morgan Stanley | 14.39M | 1.30% | $3.02B | added +14.3% | ≤2013 |
| FMR (Fidelity) | 12.53M | 1.14% | $2.63B | trimmed -20.4% | ≤2013 |
| Geode Capital | 12.43M | 1.13% | $2.61B | added +1.8% | ≤2013 |
| Softbank Group CORP. (focused) | 10.00M | 0.91% | $2.10B | trimmed -64.9% | 2021 Q3 |
| Invesco | 8.11M | 0.74% | $1.70B | trimmed -7.1% | ≤2013 |
| UBS | 7.33M | 0.67% | $1.54B | trimmed -7.3% | ≤2013 |
| Franklin Resources | 7.05M | 0.64% | $1.48B | added +10.2% | 2015 Q3 |
| Barclays PLC | 6.61M | 0.60% | $1.39B | added +111.7% | ≤2013 |
| Goldman Sachs | 6.28M | 0.57% | $1.32B | added +19% | ≤2013 |
| Dodge & Cox | 6.16M | 0.56% | $1.29B | unchanged | 2020 Q2 |
| CPP Investment Board | 6.06M | 0.55% | $1.27B | added +4.7% | ≤2013 |
| Capital International Investors | 6.03M | 0.55% | $1.27B | trimmed -59.4% | 2022 Q4 |
| BNY Mellon | 5.11M | 0.46% | $1.07B | trimmed -2.8% | ≤2013 |
| Northern Trust | 4.59M | 0.42% | $964.9M | trimmed -4.2% | ≤2013 |
| Jane Street | 4.47M | 0.41% | $938.4M | added +234.5% | 2014 Q4 |
| Nuveen | 4.37M | 0.40% | $918.2M | added +93.4% | 2015 Q1 |
| Neuberger Berman Group LLC | 3.94M | 0.36% | $826.7M | trimmed -11.7% | 2015 Q1 |
| Two Sigma | 3.89M | 0.35% | $817.3M | added +228.7% | 2022 Q4 |
| Dimensional Fund Advisors | 3.81M | 0.35% | $801.0M | unchanged | ≤2013 |
| Charles Schwab Investment Management | 3.73M | 0.34% | $782.4M | added +3.5% | ≤2013 |
| Amundi | 3.68M | 0.33% | $772.8M | added +40.6% | 2017 Q4 |
| Ameriprise Financial INC | 3.68M | 0.33% | $772.6M | added +40.1% | ≤2013 |
| Legal & General Group PLC | 3.50M | 0.32% | $735.6M | added +2% | ≤2013 |
| AllianceBernstein | 3.42M | 0.31% | $717.8M | added +19.1% | ≤2013 |
| Deutsche Bank AG\ | 3.34M | 0.30% | $701.1M | added +54.7% | ≤2013 |
| Clearbridge Investments, LLC | 3.17M | 0.29% | $666.2M | added +14.7% | 2020 Q1 |
| Bank OF America CORP /DE/ | 3.15M | 0.29% | $662.3M | trimmed -1.4% | ≤2013 |
| Viking Global | 2.97M | 0.27% | $623.2M | trimmed -21% | 2023 Q4 |
| AQR Capital | 2.69M | 0.24% | $565.0M | added +115.2% | 2015 Q3 |
| Citadel Advisors | 2.51M | 0.23% | $527.6M | added +141.8% | ≤2013 |
| Royal Bank OF Canada | 2.50M | 0.23% | $525.8M | trimmed -16.6% | ≤2013 |
| Boston Partners | 2.40M | 0.22% | $504.6M | added +3.1% | 2020 Q2 |
| Marshall Wace | 2.37M | 0.21% | $497.6M | added +226.6% | ≤2013 |
| BNP Paribas Financial Markets | 2.01M | 0.18% | $422.8M | trimmed -47.5% | ≤2013 |
| Principal Financial Group INC | 1.99M | 0.18% | $416.9M | added +10% | 2015 Q2 |
| Capital Research Global Investors | 1.81M | 0.17% | $381.1M | opened | 2026 Q1 |
| Pacer Advisors, INC. | 1.76M | 0.16% | $368.6M | added +1375.9% | 2015 Q4 |
| Victory Capital Management INC | 1.73M | 0.16% | $363.9M | added +114.8% | 2016 Q3 |
| Raymond James Financial INC | 1.73M | 0.16% | $363.0M | trimmed -4.2% | 2014 Q3 |
| Mitsubishi UFJ Asset Management CO., LTD. | 1.64M | 0.15% | $344.4M | added +4.9% | ≤2013 |
| Citigroup INC | 1.49M | 0.14% | $313.0M | added +15.4% | ≤2013 |
| Millennium Management | 1.49M | 0.14% | $312.6M | added +41% | ≤2013 |
| Swiss National Bank | 1.48M | 0.13% | $310.2M | added +6.4% | ≤2013 |
| ProShare Advisors LLC | 1.47M | 0.13% | $309.8M | trimmed -19.7% | 2013 Q4 |
| CalPERS | 1.45M | 0.13% | $304.4M | added +15.9% | ≤2013 |
Largest 50 of 1,681 shown; the full ranked, searchable register is at boothcheck.com/holders/TMUS. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.