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QLYS · Qualys, Inc. · Holdings

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Market Cap
$5.59B
Shares
34.60M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 438
Total Value: $5,156,282,879
Total Shares: 37,523,532
Showing 1–100 of 448 holdings by value · page 1 of 5

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 438 13F filers · Δ vs Mar 31, 2026
Top Holder
15.4%
Sep 2023 → Jun 2026 · range 13.7% – 16.3%
+1.0 pts
Top 5
34.5%
Sep 2023 → Jun 2026 · range 32.6% – 39.4%
+1.9 pts
Top 10
50.3%
Sep 2023 → Jun 2026 · range 45.7% – 53.5%
+4.5 pts
HHI
432
Sep 2023 → Jun 2026 · range 375 – 531
Broadly held+56

Quarterly Activity

vs Mar 31, 2026
New
92
Increased
163
Decreased
143
Sold Out
79
Unchanged
40
Holder count: +13
Institutional value: +57.0%
Shares held: +0.4%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 448
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1107843 CUSIP 74758T303 13F (30d) 163 filings 160 filers Visit website Investor relations