Oberweis Asset Management’s Qualys QLYS Stock Holding History

Oberweis Asset Management’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 Q1	$10.4M	Buy	118,900 +11,100	+10%	+$1.23M	0.31%	116
2025 Q4	$14.3M	Buy	107,800 +23,800	+28%	+$3.27M	0.52%	75
2025 Q3	$11.1M	Hold	84,000	–	–	0.43%	90
2025 Q2	$12M	Buy	84,000 +11,900	+17%	+$1.58M	0.52%	75
2025 Q1	$9.08M	Buy	72,100 +24,300	+51%	+$3.29M	0.45%	79
2024 Q4	$6.7M	Buy	+47,800	New	+$6.65M	0.32%	115
2024 Q1	–	Sell	-17,600	Closed	-$3.45M	–	216
2023 Q4	$3.45M	Buy	17,600 +1,000	+6%	+$175K	0.32%	122
2023 Q3	$2.53M	Buy	+16,600	New	+$2.39M	0.27%	134

Other funds holding QLYS

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

Legal & General Group London, United Kingdom $432B AUM 29.4% 1-Year Est. Return

BTW

Boston Trust Walden Boston, Massachusetts $12.2B AUM 12.45% 1-Year Est. Return

First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return

Oberweis Asset Management's QLYS Position: Q1 2026 in Review

Oberweis Asset Management increased its Qualys (QLYS) stake by 10% in Q1 2026, buying an estimated $1.23M and bringing the position to 118,900 shares worth $10.4M. The position accounts for 0.31% of the portfolio, ranked #116.

Oberweis Asset Management first reported a position in QLYS in Q3 2023 and has held it in 8 quarters since. The position peaked at $14.3M in Q4 2025. 420 funds tracked by Wall St. Rank hold QLYS as of Q1 2026.

Oberweis Asset Management held 118,900 shares of Qualys worth $10.4M as of Q1 2026.
Oberweis Asset Management bought 11,100 Qualys shares in Q1 2026, an estimated $1.23M.
Qualys made up 0.31% of Oberweis Asset Management's portfolio in Q1 2026, its #116 holding.
Oberweis Asset Management first reported a position in Qualys in Q3 2023 and has held it in 8 quarters since.
Oberweis Asset Management's Qualys position peaked at $14.3M in Q4 2025.
420 funds tracked by Wall St. Rank held Qualys as of Q1 2026.

Based on Oberweis Asset Management's 13F filing for Q1 2026, filed 15 May 2026.