CSS LLC’s Halozyme HALO Stock Holding History

CSS LLC’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 Q1	$430K	Buy	+6,655	New	+$469K	0.02%	570
2023 Q3	–	Sell	-10,700	Closed	-$386K	–	864
2023 Q2	$386K	Buy	+10,700	New	+$365K	0.02%	475

Other funds holding HALO

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

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

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return

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

CSS LLC's HALO Position: Q1 2026 in Review

CSS LLC opened a new position in Halozyme (HALO) in Q1 2026: 6,655 shares worth $430K. The stake represents 0.02% of the portfolio and ranks #570 among its holdings. This is a return to the name: CSS LLC previously reported a position in HALO as recently as Q2 2023.

CSS LLC first reported a position in HALO in Q2 2023 and has held it in 2 quarters since. 635 funds tracked by Wall St. Rank hold HALO as of Q1 2026.

CSS LLC held 6,655 shares of Halozyme worth $430K as of Q1 2026.
Halozyme was a new CSS LLC position in Q1 2026.
Halozyme made up 0.02% of CSS LLC's portfolio in Q1 2026, its #570 holding.
CSS LLC first reported a position in Halozyme in Q2 2023 and has held it in 2 quarters since.
635 funds tracked by Wall St. Rank held Halozyme as of Q1 2026.

Based on CSS LLC's 13F filing for Q1 2026, filed 15 May 2026.