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 429 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 2012383 · View history	$719.96M 5,717,106 shares	0.02%	-141.70K(-2.40%)Reduced	SEC filing ↗ May 2, 2025	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$538.51M 4,276,304 shares	0.01%	-36.36K(-0.80%)Reduced	SEC filing ↗ May 9, 2025	▾
03	STATE STREET CORP CIK 93751 · View history	$181.90M 1,444,427 shares	0.01%	+5.01K(+0.30%)Added	SEC filing ↗ May 15, 2025	▾
04	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$160.37M 1,261,119 shares	0.01%	-1.81K(-0.10%)Reduced	SEC filing ↗ May 13, 2025	▾
05	NEUBERGER BERMAN GROUP LLC CIK 1465109 · Amended · View history	$139.19M 1,105,310 shares	0.12%	-1.09K(-0.10%)Reduced	SEC filing ↗ Oct 27, 2026	▾
06	FIRST TRUST ADVISORS LP CIK 1125816 · View history	$134.96M 1,071,717 shares	0.12%	+151.55K(+16.50%)Added	SEC filing ↗ May 14, 2025	▾
07	Boston Trust Walden Corp CIK 1534866 · View history	$132.20M 1,049,813 shares	0.97%	+190(0.00%)Added	SEC filing ↗ Apr 21, 2025	▾
08	Legal & General Group Plc CIK 764068 · View history	$124.14M 985,749 shares	0.03%	+31.17K(+3.30%)Added	SEC filing ↗ May 15, 2025	▾
09	MORGAN STANLEY CIK 895421 · View history	$108.04M 857,929 shares	0.01%	-85.68K(-9.10%)Reduced	SEC filing ↗ May 15, 2025	▾
10	Fundsmith LLP CIK 1569205 · View history	$90.49M 718,602 shares	0.41%	+170.59K(+31.10%)Added	SEC filing ↗ May 15, 2025	▾
11	AQR CAPITAL MANAGEMENT LLC CIK 1167557 · View history	$85.39M 688,776 shares	0.09%	+338.70K(+96.80%)Added	SEC filing ↗ May 15, 2025	▾
12	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$84.29M 669,315 shares	0.02%	+5.31K(+0.80%)Added	SEC filing ↗ May 13, 2025	▾
13	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC CIK 861177 · View history	$81.00M 643,238 shares	0.02%	+308.63K(+92.20%)Added	SEC filing ↗ May 19, 2025	▾
14	CDAM (UK) Ltd CIK 1719387 · View history	$77.01M 611,533 shares	12.46%	-260(0.00%)Reduced	SEC filing ↗ May 14, 2025	▾
15	NORTHERN TRUST CORP CIK 73124 · View history	$70.30M 558,235 shares	0.01%	-12.78K(-2.20%)Reduced	SEC filing ↗ May 13, 2025	▾
16	AMERICAN CAPITAL MANAGEMENT INC CIK 1320168 · View history	$67.46M 535,691 shares	2.75%	-1.61K(-0.30%)Reduced	SEC filing ↗ May 15, 2025	▾
17	Penserra Capital Management LLC CIK 1593324 · View history	$62.85M 499,084 shares	1.12%	+173.51K(+53.30%)Added	SEC filing ↗ Apr 29, 2025	▾
18	JPMORGAN CHASE & CO CIK 19617 · View history	$61.89M 491,446 shares	0.00%	-73.10K(-12.90%)Reduced	SEC filing ↗ May 12, 2025	▾
19	LONDON CO OF VIRGINIA CIK 1259887 · View history	$58.93M 467,975 shares	0.34%	+3.67K(+0.80%)Added	SEC filing ↗ May 15, 2025	▾
20	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · Amended · View history	$57.53M 456,857 shares	0.01%	+317(+0.10%)Added	SEC filing ↗ Sep 15, 2025	▾

Showing 20 / 429 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

429

Cancelled or null records excluded

Disclosed shares

34,941,332

Not deduplicated across managers

Disclosed value

$4.40B

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 2025

Explore all 429 reporting institutions.

This page includes 20 of 429 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.