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TMUS · T-Mobile US, Inc. · Holdings

Track TMUS — free
Market Cap
$159.25B
Shares
1.06B
Volume · Oct 29 7.19M Avg daily vol (3M) 5.33M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 1,681
Total Value: $82,008,526,634
Total Shares: 489,370,154
Showing 1–100 of 1,751 holdings by value · page 1 of 18

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 1,678 13F filers
Top Holder
8.1%
Sep 2023 → Jun 2026 · range 8.1% – 17.2%
of institutional value
Top 5
30.9%
Sep 2023 → Jun 2026 · range 30.7% – 41.0%
of institutional value
Top 10
44.5%
Sep 2023 → Jun 2026 · range 44.5% – 52.8%
of institutional value
HHI
270
Sep 2023 → Jun 2026 · range 270 – 511
Broadly held

Who Holds TMUS

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 1,669 filers, like-for-like change -0.5%; actively managed books -3.6%; index-like books +4.6%.

Holder type Share Filers Change
Registered adviser 33.8% 975 +1.2%
Exempt adviser 1.5% 12 +74.9%
Adviser 10.9% 24 +13.9%
Bank 13.4% 50 -1.3%
Insurer 0.5% 4 -26.3%
Broker-dealer 0.1% 3 -3.4%
Registered fund 0.0% 1 -36.5%
Benefit plan 0.5% 10 -22.1%
Non-US 4.4% 24 -21.7%
Holding company 19.4% 17 -8.1%
Unknown 15.6% 549 +0.5%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 24 holders with no observed 2026-03-31 13F and 20 holders with no observed 2026-06-30 13F. Compared across CIK changes: 4 filers continue as Evelyn Partners Group Ltd; JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.

Conviction and Crowding

1,669 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
13
0.779% of filers hold it in their top 10
Mar 31, 2026: 19
Holders above 5%
4
median weight 0.060%
Mar 31, 2026: 5
Crowding
9.01%
of shares outstanding, 27th percentile
Mar 31, 2026: 8.80%
Private-fund advisers
8.56%
of shares outstanding
Institutional ownership
43.0%
93.9% of the estimated free float
Top 10 holders
45.3%
of 13F shares, Herfindahl 0.029
Active holders
-3.6%
like-for-like share change of active filers
5% stakes on record
1
1 13D, 0 13G
How long holders have held it value-weighted 19.7 quarters
Under 1 year 12.2% 1 to 3 years 14.5% 3 years or more 73.3% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$186.05
estimated per share
Mar 31, 2026: $189.81
Quarter-end price
$167.52
implied by 13F values
Estimated gain or loss
-10.0%
price against the estimated cost
Estimated at a loss
71.0%
of costed 13F value

Estimated cost covers 15.4% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies TMUS's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 META Meta Platforms, Inc. 490
2 AVGO Broadcom Inc. 478
3 V Visa Inc. 455
4 LLY ELI LILLY & Co 457
5 GOOGL Alphabet Inc. 534
6 MSFT Microsoft Corp 526
7 AMZN Amazon Com Inc 522
8 NVDA Nvidia Corp 513
9 AAPL Apple Inc. 521
10 COST Costco Wholesale Corp 415

Shareholder Targets

13F filers that own its peers but not TMUS, quarter ended Jun 30, 2026

Found through its holder-overlap peers: META, AVGO, V, LLY, GOOGL, MSFT, AMZN, NVDA, AAPL, COST, JPM, WMT, JNJ, AMD, ABBV, NFLX, CSCO, MA, MRK, HD. 5,630 filers in all.

# Filer In peers
1 Capital World Investors Adviser, Diversified active $239,920,446,383 18 held
2 LILLY ENDOWMENT INC Unknown, Unknown $108,400,867,760 1 held
3 Berkshire Hathaway Inc Insurer, Concentrated $103,714,385,303 2 held
4 JENNISON ASSOCIATES LLC Registered adviser, Diversified active $85,634,318,888 18 held
5 STATE FARM MUTUAL AUTOMOBILE INSURANCE CO Insurer, Diversified active $45,717,726,878 12 held
6 Sanders Capital, LLC Registered adviser, Concentrated $42,537,434,004 11 held
7 LOOMIS SAYLES & CO L P Registered adviser, Diversified active $33,744,249,903 20 held
8 MASTERCARD FOUNDATION ASSET MANAGEMENT CORP Unknown, Unknown $30,994,616,726 1 held
9 T. Rowe Price Investment Management, Inc. Adviser, Diversified active $29,542,869,849 20 held
10 CANADA LIFE ASSURANCE Co Unknown, Diversified active $24,099,402,763 19 held

Fund Ownership of TMUS by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 8.77% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 2.06% 21,781,305
Index ETFs 6.71% 71,123,260
Active ETFs 0.59% 6,255,103
Active funds 5.56% 58,944,696
Unclassified 2.87% 30,365,047
All registered funds 17.79% 188,469,411
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Showing 100 of 1,751
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 1,751 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1283699 CUSIP 872590104 13F (30d) 577 filings 545 filers Visit website Investor relations