DOSSIER · 13F Holders · Q1 2026Communication Services · Telephone Communications (No Radiotelephone)
TDS

TELEPHONE & DATA SYS INC

368 institutions still hold TELEPHONE & DATA SYS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 879433829·Telephone Communications (No Radiotelephone)·368 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$3.1B
visible holders
Holders
368
filers reporting
Concentration
20.47%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

Congress Asset Management controls 53.8% of Telephone & Data Systems' $24.3 million in tracked institutional value — more than every other holder combined — and it grew that position further this quarter, adding shares from 278,324 to 352,497 (+26.7%, a $1.3 million increase) during a stretch when the data implies TDS shares fell roughly 12%. That buying happened against a backdrop where several other holders were losing ground even while holding steady or adding: Cooper Investors Pty Ltd, the second-largest holder at 32.5% of the book, increased its share count 8.4% yet still saw its position's dollar value fall $391,931 because the price decline outpaced the new buying. First Citizens Bank & Trust actively cut its stake by 10.0%, and GAMMA Investing trimmed 4.0%. With just 15 tracked institutional holders and one manager controlling more than half the book, TDS's institutional ownership story is close to a referendum on a single firm's conviction — and that firm just doubled down into a down quarter.

Telephone & Data Systems (TDS) carries $24.3 million in tracked institutional value across just 15 holders as of the quarter ended June 30, 2026 — a small, concentrated sample. Within it, one name stands out overwhelmingly: Congress Asset Management holds 53.8% of the entire tracked book, more than the other 14 holders combined.

Buying more during a decline

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$628M14.9M0.01%Q1 2026
02
Third Point LLC
CIK 0001040273
$278M6.6M13.34%Q1 2026
03
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$273M6.5M0.06%Q1 2026
04
Vanguard Portfolio Management
CIK 0002100121· Index
$263M6.3M0.01%Q1 2026
05
CARRONADE CAPITAL MANAGEMENT, LP
CIK 0001866872
$195M4.6M2.54%Q1 2026
06
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$181M4.3M0.00%Q1 2026
07
OAKTREE CAPITAL MANAGEMENT LP
CIK 0000949509
$181M4.3M2.76%Q1 2026
08
STATE STREET CORP
CIK 0000093751
$176M4.2M0.01%Q1 2026
09
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$155M3.7M0.08%Q1 2026
10
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$101M2.4M0.01%Q1 2026
11
GOLDMAN SACHS GROUP INC
CIK 0000886982
$92M2.2M0.01%Q1 2026
12
Rubric Capital Management LP
CIK 0001687509
$76M1.9M0.91%Q4 2025
13
MORGAN STANLEY
CIK 0000895421
$72M1.7M0.00%Q1 2026
14
GABELLI FUNDS LLC
CIK 0001081407
$64M1.5M0.43%Q1 2026
15
GAMCO INVESTORS, INC. ET AL
CIK 0000807249
$63M1.5M0.62%Q1 2026
16
DAVIDSON KEMPNER CAPITAL MANAGEMENT LP
CIK 0001595082
$59M1.4M0.81%Q1 2026
17
140 Summer Partners LP
CIK 0001820788
$56M1.3M3.44%Q1 2026
18
REDWOOD CAPITAL MANAGEMENT, LLC
CIK 0001316622
$54M1.3M7.96%Q1 2026
19
Qube Research & Technologies Ltd
CIK 0001729829
$53M1.2M0.06%Q1 2026
20
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$48M1.1M0.01%Q1 2026
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Insiders at TELEPHONE & DATA SYS INC
Carlson Leroy T JrKroll Anita JVillacrez Vicki LDixon Kenneth S.Carlson Walter CdCarlson Prudence ECarlson Letitia G CHanley Joseph R