Oberweis Asset Management’s Halozyme HALO Stock Holding History

Oberweis Asset Management’s Portfolio HALO Stock Details HALO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$25.1M	Buy	321,030 +101,100	+46%	+$6.89M	0.52%	72
2026 Q1	$14.2M	Buy	219,930 +102,350	+87%	+$7.22M	0.42%	94
2025 Q4	$7.91M	Hold	117,580	–	–	0.29%	124
2025 Q3	$8.62M	Sell	117,580 -64,620	-35%	-$4.29M	0.33%	113
2025 Q2	$9.48M	Buy	+182,200	New	+$10.4M	0.41%	89
2024 Q1	–	Sell	-96,300	Closed	-$3.56M	–	204
2023 Q4	$3.56M	Buy	96,300 +45,800	+91%	+$1.72M	0.33%	119
2023 Q3	$1.93M	Buy	+50,500	New	+$2.07M	0.2%	161
2023 Q2	–	Sell	-164,040	Closed	-$6.26M	–	190
2023 Q1	$6.26M	Buy	164,040 +20,650	+14%	+$969K	0.97%	17
2022 Q4	$8.16M	Buy	143,390 +26,850	+23%	+$1.37M	1.73%	10
2022 Q3	$4.61M	Buy	116,540 +13,490	+13%	+$596K	1.08%	14
2022 Q2	$4.53M	Sell	103,050 -4,400	-4%	-$190K	1.15%	12
2022 Q1	$4.29M	Buy	107,450 +1,800	+2%	+$64.1K	0.86%	17
2021 Q4	$4.25M	Buy	105,650 +35,670	+51%	+$1.33M	0.78%	22
2021 Q3	$2.85M	Buy	69,980 +780	+1%	+$32.6K	0.59%	23
2021 Q2	$3.14M	Buy	69,200 +300	+0.4%	+$13.3K	0.69%	22
2021 Q1	$2.87M	Buy	+68,900	New	+$3.15M	0.59%	26

Other funds holding HALO

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

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

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

William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return

Oberweis Asset Management's HALO Position: Q2 2026 in Review

Oberweis Asset Management increased its Halozyme (HALO) stake by 46% in Q2 2026, buying an estimated $6.89M and bringing the position to 321,030 shares worth $25.1M. The position accounts for 0.52% of the portfolio, ranked #72.

Oberweis Asset Management first reported a position in HALO in Q1 2021 and has held it in 16 quarters since. 671 funds tracked by Wall St. Rank hold HALO as of Q2 2026.

Oberweis Asset Management held 321,030 shares of Halozyme worth $25.1M as of Q2 2026.
Oberweis Asset Management bought 101,100 Halozyme shares in Q2 2026, an estimated $6.89M.
Halozyme made up 0.52% of Oberweis Asset Management's portfolio in Q2 2026, its #72 holding.
Oberweis Asset Management first reported a position in Halozyme in Q1 2021 and has held it in 16 quarters since.
671 funds tracked by Wall St. Rank held Halozyme as of Q2 2026.

Based on Oberweis Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.