DOSSIER · 13F Holders · Q4 2025

HOLOGIC INC

2 institutions still hold HOLOGIC INC as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 436440951·2 13F holders·last filed Dec 31, 2025
Market cap
13F value held
$5M
visible holders
Holders
2
filers reporting
Concentration
100.00%
WATER ISLAND CAPITAL LLC #1
top holder share
AI Holders Summary · Q4 2025

2 institutions reported HOLOGIC INC in Q4 2025. WATER ISLAND CAPITAL LLC leads at 100.0% 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
$5M61K0.49%Q4 2025
02
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025