William Blair & Company’s Qualys QLYS Stock Holding History

William Blair & Company’s Portfolio QLYS Stock Details QLYS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$258K	Buy	+1,879	New	+$185K	﹤0.01%	1480
2026 Q1	–	Sell	-47,958	Closed	-$6.37M	–	1994
2025 Q4	$6.37M	Buy	47,958 +695	+1%	+$95.6K	0.02%	460
2025 Q3	$6.25M	Buy	47,263 +2,000	+4%	+$271K	0.02%	467
2025 Q2	$6.47M	Buy	45,263 +2,440	+6%	+$323K	0.02%	439
2025 Q1	$5.39M	Sell	42,823 -17,315	-29%	-$2.34M	0.02%	464
2024 Q4	$8.43M	Sell	60,138 -1,527	-2%	-$213K	0.02%	368
2024 Q3	$7.92M	Buy	61,665 +29,865	+94%	+$3.94M	0.02%	392
2024 Q2	$4.53M	Buy	31,800 +642	+2%	+$97.8K	0.01%	513
2024 Q1	$5.2M	Buy	31,158 +5,113	+20%	+$903K	0.02%	471
2023 Q4	$5.11M	Buy	26,045 +4,780	+22%	+$836K	0.02%	460
2023 Q3	$3.24M	Sell	21,265 -9	-0%	-$1.29K	0.01%	538
2023 Q2	$2.75M	Buy	+21,274	New	+$2.62M	0.01%	591

Other funds holding QLYS

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Legal & General Group London, United Kingdom $480B AUM 42.84% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

BTW

Boston Trust Walden Boston, Massachusetts $13.1B AUM 24.63% 1-Year Est. Return

William Blair & Company's QLYS Position: Q2 2026 in Review

William Blair & Company opened a new position in Qualys (QLYS) in Q2 2026: 1,879 shares worth $258K. The stake represents ﹤0.01% of the portfolio and ranks #1480 among its holdings. This is a return to the name: William Blair & Company previously reported a position in QLYS as recently as Q4 2025.

William Blair & Company first reported a position in QLYS in Q2 2023 and has held it in 12 quarters since. The position peaked at $8.43M in Q4 2024. 430 funds tracked by Wall St. Rank hold QLYS as of Q2 2026.

William Blair & Company held 1,879 shares of Qualys worth $258K as of Q2 2026.
Qualys was a new William Blair & Company position in Q2 2026.
Qualys made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1480 holding.
William Blair & Company first reported a position in Qualys in Q2 2023 and has held it in 12 quarters since.
William Blair & Company's Qualys position peaked at $8.43M in Q4 2024.
430 funds tracked by Wall St. Rank held Qualys as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.