Twin Tree Management’s Halozyme HALO Stock Holding History

Twin Tree 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 Q1	$2.91M	Buy	+45,100	New	+$3.18M	0.06%	359
2025 Q3	–	Sell	-17,600	Closed	-$916K	–	1614
2025 Q2	$916K	Buy	+17,600	New	+$1M	﹤0.01%	1371
2025 Q1	–	Sell	-3,000	Closed	-$143K	–	1701
2024 Q4	$143K	Buy	+3,000	New	+$154K	﹤0.01%	1406
2021 Q3	–	Sell	-5,900	Closed	-$268K	–	1655
2021 Q2	$268K	Buy	+5,900	New	+$261K	﹤0.01%	1166

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

Twin Tree Management's HALO Position: Q1 2026 in Review

Twin Tree Management opened a new position in Halozyme (HALO) in Q1 2026: 10,248 shares worth $662K. The stake represents 0.01% of the portfolio and ranks #860 among its holdings. This is a return to the name: Twin Tree Management previously reported a position in HALO as recently as Q2 2025.

Twin Tree Management first reported a position in HALO in Q4 2020 and has held it in 12 quarters since. The position peaked at $1.96M in Q4 2022. 634 funds tracked by Wall St. Rank hold HALO as of Q1 2026.

Twin Tree Management held 10,248 shares of Halozyme worth $662K as of Q1 2026.
Halozyme was a new Twin Tree Management position in Q1 2026.
Halozyme made up 0.01% of Twin Tree Management's portfolio in Q1 2026, its #860 holding.
Twin Tree Management first reported a position in Halozyme in Q4 2020 and has held it in 12 quarters since.
Twin Tree Management's Halozyme position peaked at $1.96M in Q4 2022.
634 funds tracked by Wall St. Rank held Halozyme as of Q1 2026.

Based on Twin Tree Management's 13F filing for Q1 2026, filed 14 May 2026.