DOSSIER · 13F Holders · Q3 2026
ZS 0 07/15/28

ZSCALER INC

2 institutions still hold ZSCALER INC as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 98980GAD4·2 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$23M
visible holders
Holders
2
filers reporting
Concentration
69.79%
MACKAY SHIELDS LLC #1
top holder share
AI Holders Summary · Q3 2026

2 institutions reported ZS 0 07/15/28 in Q3 2026. MACKAY SHIELDS LLC leads at 69.8% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
MACKAY SHIELDS LLC
CIK 0000061227
$16M17.3M0.59%Q3 2026
02
ABSOLUTE INVESTMENT ADVISERS, LLC
CIK 0001316187
$7M7.5M0.65%Q3 2026