Zscaler

ZS · NASDAQ

$214.51+$1.98 (+0.93%)TodayMarket closed · Oct 20, 4:05 PM ET

Prev close $212.53

Who owns ZS

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 51.5% of ZS’s shares.

Mangal (Ajay)18.0%
Chaudhry (Jyoti)15.1%
BlackRock Institutional Trust Company, N.A.3.8%
Vanguard Portfolio Management, LLC3.8%
Next 6 largest institutions10.8%
All other shareholders48.5%

Top institutional holders of ZS
Holder	Shares	% of shares	Change, last filing	Filed
Mangal (Ajay)	29.08M	17.99%	−184.61K	Nov 1, 2025
Chaudhry (Jyoti)	24.34M	15.05%	−47.96K	Nov 1, 2025
BlackRock Institutional Trust Company, N.A.	6.21M	3.84%	+698.42K	Jun 30, 2026
Vanguard Portfolio Management, LLC	6.20M	3.83%	+266.09K	Jun 30, 2026
Vanguard Capital Management, LLC	4.72M	2.92%	+60.50K	Jun 30, 2026
First Trust Advisors L.P.	3.53M	2.18%	+10.54K	Jun 30, 2026
Chaudhry (Jagtar Singh)	2.51M	1.55%	−2.88K	Jun 16, 2026
State Street Investment Management (US)	2.49M	1.54%	+109.15K	Jun 30, 2026
Pictet Asset Management Ltd.	2.10M	1.30%	+184.08K	Jun 30, 2026
Goldman Sachs Asset Management, L.P.	2.10M	1.30%	+285.34K	Jun 30, 2026

Largest mutual fund holders

Top mutual fund holders of ZS
Holder	Shares	% of shares	Change, last filing	Filed
Vanguard Total Stock Market Index Fund	3.35M	2.07%	+9.91K	Jul 31, 2026
First Trust Nasdaq Cybersecurity ETF	3.12M	1.93%	+100.67K	Aug 31, 2026
Vanguard Mid-Cap Index Fund	2.27M	1.41%	−2.90K	Jul 31, 2026
Pictet-Security	1.74M	1.07%	+312.03K	Apr 30, 2026
Vanguard Growth Index Fund	1.62M	1.00%	−9.21K	Jul 31, 2026

Insider trades

Form 4 filings by officers, directors and large holders

Over the last 6 months, insiders sold $13.78M (45 trades) of ZS on the open market, with no buys.

Latest ZS insider transactions
Insider	Date	Type	Shares	Price	Value
Geller Adam	Oct 12, 2026	Option exercise	1.04K	$205.61	$214.25K
Geller Adam	Oct 12, 2026	Sale	1.04K	$235.95	$245.86K
Geller Adam	Oct 12, 2026	Option exercise	1.04K	$205.61	$214.25K
Geller Adam	Oct 9, 2026	Option exercise	23.96K	$205.61	$4.93M
Geller Adam	Oct 9, 2026	Sale	2.08K	$230.00	$479.09K
Geller Adam	Oct 9, 2026	Sale	21.88K	$225.00	$4.92M
Geller Adam	Oct 9, 2026	Option exercise	23.96K	$205.61	$4.93M
RUBIN KEVIN	Sep 25, 2026	Sale	3	$207.80	$623
RUBIN KEVIN	Sep 25, 2026	Sale	4	$205.99	$824
RUBIN KEVIN	Sep 25, 2026	Sale	20	$205.35	$4.11K

Short interest

Settled Sep 30, 2026

Shares short: 5.80M
Days to cover: 1.80
% of shares outstanding: 3.59%
Average daily volume: 3.22M
Change since last report: −10.8%

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