13F Insight
DOSSIER · 13F Holders · Q2 2026

WARNER BROS DISCOVERY INC

10 institutions still hold WARNER BROS DISCOVERY INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 934423954·10 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$142M
visible holders
Holders
10
filers reporting
Concentration
28.69%
WATER ISLAND CAPITAL LLC #1
top holder share
AI Holders Summary · Q2 2026

10 institutions reported WARNER BROS DISCOVERY INC in Q2 2026. WATER ISLAND CAPITAL LLC leads at 28.7% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
WATER ISLAND CAPITAL LLC
CIK 0001222765
$41M1.5M3.78%Q2 202602
HRT FINANCIAL LP
CIK 0001475597
$28M981K0.09%Q4 202503
GROUP ONE TRADING LLC
CIK 0000932540
$27M1.0M0.04%Q2 202604
IMC-Chicago, LLC
CIK 0001452861· Market maker
$24M895K0.01%Q2 202605
SIMPLEX TRADING, LLC
CIK 0001488542
$11M427K0.01%Q2 202606
Marathon Trading Investment Management LLC
CIK 0001572748
$7M280K0.23%Q2 202607
Varenne Capital Partners
CIK 0001902567
$2M21K0.34%Q2 202608
BOUSSARD & GAVAUDAN GESTION SAS
CIK 0001569001
$1M7K0.05%Q2 202609
Alpine Global Management, LLC
CIK 0001581655
$18K1K0.00%Q2 202610
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025