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QLYS Institutional Ownership & 13F Holders | SmartMoneyDB

QLYSQUALYS INC

COM · CUSIP 74758T303

Smart Money Ownership

Of the 14 tracked institutions holding QLYS, 7 have a 3-year clone track record — 7 of them beat the S&P. Average holder's clone alpha: +5.8pt. It's a gauge of who owns the name, not just how many.

Steve Cohen

$39.3M · 0.1% of book

+10.6pt

Jim Simons

$39.1M · 0.1% of book

QLYS (QUALYS INC) Institutional Ownership Summary

Among the 14 tracked institutional investors we monitor, QLYS (QUALYS INC) is held with a combined value of $2.06B across 15,168,563 shares. The largest holder is BlackRock, Inc. with a position worth $792.32M (0.01% of their portfolio). 2 funds opened new positions in the most recent quarter. 7 funds increased their holdings. 5 funds reduced their position.

Total Institutional Value

$2.06B

Total Shares Held

15,168,563

Institutional Holders

This Quarter's Biggest Movers

Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.

Biggest Buyers

MILLENNIUM MANAGEMENT LLC+224% shares~$72.5M BlackRock, Inc.+8% shares~$55.3M AQR CAPITAL MANAGEMENT LLC+34% shares~$48.7M Point72 Asset Management, L.P.New position~$39.3M CITADEL ADVISORS LLC+86% shares~$24.0M

13F Institutional Holders

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AQR CAPITAL MANAGEMENT LLC

0.07% of book+34.3%

$190.60M

MILLENNIUM MANAGEMENT LLC

Point72 Asset Management, L.P.

0.06% of bookNew

$39.31M

RENAISSANCE TECHNOLOGIES LLC

0.05% of book-42.9%

$39.06M

WELLINGTON MANAGEMENT GROUP LLP

0.00% of bookNew

$19.45M

Fisher Asset Management, LLC

0.00% of book-1.1%

$15.80M

#	Fund	Value↓	Shares	Portfolio %	Change
1	BlackRock, Inc.	$792.32M	5,762,721	0.01%	+7.5%
2	VANGUARD GROUP INC	$580.16M	4,365,407	0.01%	-0.8%
3	STATE STREET CORP	$200.21M	1,456,158	0.01%	+4.9%
4	AQR CAPITAL MANAGEMENT LLC	$190.60M	1,394,771	0.07%	+34.3%
5	MILLENNIUM MANAGEMENT LLC	$104.86M	762,709	0.07%	+224.0%
6	CITADEL ADVISORS LLC	$51.99M	378,139	0.03%	+85.8%
7	Point72 Asset Management, L.P.	$39.31M	285,895	0.06%	New
8	RENAISSANCE TECHNOLOGIES LLC	$39.06M	284,100	0.05%	-42.9%
9	WELLINGTON MANAGEMENT GROUP LLP	$19.45M	141,444	0.00%	New
10	Fisher Asset Management, LLC	$15.80M	114,929	0.00%	-1.1%

Congress Trading

2 members · 6 disclosed trades in QLYS

Member	Type	Amount	Date
Lisa McClain	Sell	$1,001 - $15,000	Oct 31, 2025
Lisa McClain	Sell	$1,001 - $15,000	Oct 30, 2025
Lisa McClain	Buy	$1,001 - $15,000	Oct 30, 2025
Lisa McClain	Buy	$1,001 - $15,000

Frequently Asked Questions

Which institutional investors own the most QLYS stock?

As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of QLYS with a position worth $792.32M, representing 0.01% of their portfolio. In total, 14 institutional investors hold QLYS with a combined value of $2.06B.

Are hedge funds buying or selling QLYS?

In the most recent quarter, 2 funds opened a new position in QLYS. Additionally, 7 increased their holdings and 5 reduced their positions.

What percentage of QLYS is owned by institutional investors?

Institutional investors hold $2.06B worth of QLYS stock across 14 positions. The largest institutional holder is BlackRock, Inc. with $792.32M in holdings.

What is a 13F filing and why does it matter for QLYS?

A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For QLYS, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.

Track QLYS institutional moves

Get notified when hedge funds change their QLYS positions.