Company · Ownership research

QUALYS, INC. QLYS

CIK 0001107843 · CUSIP 74758T303

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 74758T303 (QLYS), not CUSIP 74758T903 (QLYS), and does not merge CUSIPs.

This page lists the top 20 of 452 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock Inc. CIK 1364742 · View history	$856.53M 5,132,944 shares	0.02%	-305.10K(-5.60%)Reduced	SEC filing ↗ May 10, 2024	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$640.75M 3,839,801 shares	0.01%	+83.50K(+2.20%)Added	SEC filing ↗ May 10, 2024	▾
03	NEUBERGER BERMAN GROUP LLC CIK 1465109 · Amended · View history	$317.34M 1,901,713 shares	0.26%	-36.86K(-1.90%)Reduced	SEC filing ↗ Nov 14, 2024	▾
04	FIRST TRUST ADVISORS LP CIK 1125816 · View history	$250.33M 1,500,153 shares	0.25%	+368.24K(+32.50%)Added	SEC filing ↗ May 13, 2024	▾
05	STATE STREET CORP CIK 93751 · View history	$225.21M 1,349,642 shares	0.01%	+51.66K(+4.00%)Added	SEC filing ↗ May 15, 2024	▾
06	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$191.40M 1,143,811 shares	0.02%	+108.41K(+10.50%)Added	SEC filing ↗ May 13, 2024	▾
07	CONGRESS ASSET MANAGEMENT CO /MA CIK 897378 · View history	$167.07M 1,001,202 shares	1.19%	-103.15K(-9.30%)Reduced	SEC filing ↗ Apr 11, 2024	▾
08	MORGAN STANLEY CIK 895421 · Amended · View history	$144.57M 866,354 shares	0.01%	-401.37K(-31.70%)Reduced	SEC filing ↗ Oct 17, 2024	▾
09	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$124.13M 743,844 shares	0.03%	+4.64K(+0.60%)Added	SEC filing ↗ May 10, 2024	▾
10	Boston Trust Walden Corp CIK 1534866 · View history	$122.94M 736,753 shares	0.88%	+85.42K(+13.10%)Added	SEC filing ↗ Apr 22, 2024	▾
11	Legal & General Group Plc CIK 764068 · Amended · View history	$115.73M 693,515 shares	0.03%	-103.50K(-13.00%)Reduced	SEC filing ↗ May 29, 2025	▾
12	JPMORGAN CHASE & CO CIK 19617 · Amended · View history	$114.12M 683,909 shares	0.01%	+304.50K(+80.30%)Added	SEC filing ↗ Dec 26, 2024	▾
13	AMERICAN CAPITAL MANAGEMENT INC CIK 1320168 · View history	$109.63M 656,984 shares	3.51%	-27.26K(-4.00%)Reduced	SEC filing ↗ May 15, 2024	▾
14	Invesco Ltd. CIK 914208 · View history	$101.58M 608,737 shares	0.02%	+223.29K(+57.90%)Added	SEC filing ↗ May 14, 2024	▾
15	Fundsmith LLP CIK 1569205 · View history	$94.32M 565,246 shares	0.37%	-58.71K(-9.40%)Reduced	SEC filing ↗ May 15, 2024	▾
16	NORTHERN TRUST CORP CIK 73124 · View history	$85.50M 512,358 shares	0.01%	-47.76K(-8.50%)Reduced	SEC filing ↗ May 14, 2024	▾
17	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$76.47M 458,250 shares	0.02%	-5.02K(-1.10%)Reduced	SEC filing ↗ May 9, 2024	▾
18	Bank of New York Mellon Corp CIK 1390777 · View history	$72.77M 436,077 shares	0.01%	+10.42K(+2.40%)Added	SEC filing ↗ Apr 25, 2024	▾
19	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$68.60M 411,100 shares	0.11%	+253.50K(+160.90%)Added	SEC filing ↗ May 13, 2024	▾
20	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$67.18M 404,034 shares	0.02%	+108.26K(+36.60%)Added	SEC filing ↗ May 15, 2024	▾

Showing 20 / 452 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

452

Cancelled or null records excluded

Disclosed shares

36,994,829

Not deduplicated across managers

Disclosed value

$6.15B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

QUALYS, INC. · Q1 2024

Explore all 452 reporting institutions.

This page includes 20 of 452 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.