Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in TMUS held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 39.1M | $8.22B | +0.1% | 3.614% | 0.14% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 29.7M | $6.24B | β | 2.747% | 0.16% |
| 3 | STATE STREET CORP | 23.7M | $4.98B | -6.2% | 2.192% | 0.17% |
| 4 | WELLINGTON MANAGEMENT GROUP LLP | 17.2M | $3.61B | +3.7% | 1.589% | 0.67% |
| 5 | MORGAN STANLEY | 14.4M | $3.02B | +14.3% | 1.329% | 0.18% |
| 6 | FMR LLC | 12.5M | $2.63B | -20.4% | 1.158% | 0.14% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 12.4M | $2.60B | +1.8% | 1.149% | 0.16% |
| 8 | SOFTBANK GROUP CORP | 10.0M | $2.10B | -64.9% | 0.924% | 18.41% |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 9.9M | $2.09B | β | 0.918% | 0.11% |
| 10 | Invesco Ltd. | 8.1M | $1.70B | -7.1% | 0.750% | 0.26% |
| 11 | FRANKLIN RESOURCES INC | 7.0M | $1.48B | +10.2% | 0.651% | 0.36% |
| 12 | GOLDMAN SACHS GROUP INC | 6.8M | $1.43B | +13.6% | 0.630% | 0.16% |
| 13 | BARCLAYS PLC | 6.6M | $1.39B | β | 0.612% | 0.57% |
| 14 | DODGE & COX | 6.2M | $1.29B | -0.5% | 0.569% | 0.71% |
| 15 | CANADA PENSION PLAN INVESTMENT BOARD | 6.1M | $1.27B | +4.7% | 0.560% | 0.82% |
| 16 | Capital International Investors | 6.0M | $1.27B | -59.4% | 0.557% | 0.30% |
| 17 | Bank of New York Mellon Corp | 5.1M | $1.07B | -2.8% | 0.473% | 0.20% |
| 18 | NORTHERN TRUST CORP | 4.6M | $964.9M | -4.2% | 0.424% | 0.13% |
| 19 | Nuveen, LLC | 4.4M | $918.2M | +93.4% | 0.404% | 0.25% |
| 20 | CITADEL ADVISORS LLC | 4.2M | $890.3M | +42.1% | 0.392% | 0.41% |
| 21 | UBS ASSET MANAGEMENT AMERICAS INC | 4.0M | $847.0M | -18.7% | 0.373% | 0.18% |
| 22 | Neuberger Berman Group LLC | 3.9M | $826.9M | -11.7% | 0.364% | 0.63% |
| 23 | TWO SIGMA INVESTMENTS, LP | 3.9M | $817.3M | +228.7% | 0.360% | 0.66% |
| 24 | DIMENSIONAL FUND ADVISORS LP | 3.8M | $801.2M | +0.2% | 0.352% | 0.17% |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 3.7M | $782.4M | +3.5% | 0.344% | 0.12% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in TMUS β a direct measure of their conviction.
Filings activity in TMUS during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new TMUS position in Q1 2026
Institutions that fully closed their TMUS position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 1,693 | +1.4% | 41.86% | 0.82 pp | $85.67B | 1.9% |
| Q4 2025 | 1,670 | 0.4% | 42.68% | 8.63 pp | $87.35B | 17% |
| Q3 2025 | 1,677 | 2.4% | 51.31% | 1.33 pp | $105.00B | 2.5% |
| Q2 2025 | 1,719 | +0.2% | 52.64% | 6.06 pp | $107.72B | 10% |
| Q1 2025 | 1,716 | +7.5% | 58.70% | +8.37 pp | $120.13B | +17% |
| Q4 2024 | 1,597 | +9.7% | 50.33% | +2.85 pp | $103.00B | +6.0% |
| Q3 2024 | 1,456 | +5.1% | 47.48% | +4.43 pp | $97.17B | +10% |
| Q2 2024 | 1,386 | β | 43.05% | β | $88.11B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying TMUS stock.
Based on Q1 2026 13F filings, institutional ownership of T-Mobile US, Inc. stands at 41.9%, held across 1,693 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of TMUS, with approximately 39,115,867 shares worth $8.22B as of Q1 2026.
Yes β 2 widely-followed marquee investors appear among the top 25 institutional holders of TMUS, including CITADEL ADVISORS LLC, TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for TMUS is 51 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
218 institutions opened new positions in TMUS during Q1 2026, while 195 fully exited. 997 added to existing positions and 470 trimmed.
TMUS institutional ownership fell by 0.82 percentage points quarter-over-quarter, with a net change of +23 holders.
The top 10 institutions account for 43.4% of all reported 13F value in TMUS, and the top 25 account for 62.2%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
T-Mobile US, Inc. (TMUS) Institutional Ownership