Marshall Wace
HALO icon

Marshall Wace’s Halozyme HALO Stock Holding History

Marshall Wace’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 		$7.82M Sell
121,006
-376,194
-76% -$26.5M 0.01% 1087
2025
Q4 		$33.5M Buy
497,200
+103,445
+26% +$6.96M 0.03% 462
2025
Q3 		$28.9M Buy
393,755
+4,624
+1% +$307K 0.03% 507
2025
Q2 		$20.2M Sell
389,131
-74,477
-16% -$4.24M 0.02% 580
2025
Q1 		$29.6M Buy
463,608
+459,182
+10,375% +$26.7M 0.04% 408
2024
Q4 		$212K Buy
+4,426
New +$227K ﹤0.01% 2339
2024
Q2 		– Sell
-75,533
Closed -$3.07M – 2704
2024
Q1 		$3.07M Sell
75,533
-570,635
-88% -$21.4M ﹤0.01% 1184
2023
Q4 		$23.9M Sell
646,168
-2,078,643
-76% -$78.3M 0.04% 425
2023
Q3 		$104M Buy
2,724,811
+401,288
+17% +$16.4M 0.21% 92
2023
Q2 		$83.8M Buy
2,323,523
+1,433,856
+161% +$48.9M 0.16% 137
2023
Q1 		$34M Buy
+889,667
New +$41.7M 0.07% 300
2022
Q3 		– Sell
-110,861
Closed -$4.88M – 3521
2022
Q2 		$4.88M Buy
+110,861
New +$4.79M 0.01% 1358
2020
Q1 		– Sell
-8,317
Closed -$147K – 1814
2019
Q4 		$147K Buy
+8,317
New +$144K ﹤0.01% 1401
2019
Q3 		– Sell
-513,083
Closed -$8.81M – 1773
2019
Q2 		$8.81M Buy
513,083
+467,136
+1,017% +$7.54M 0.07% 319
2019
Q1 		$740K Buy
+45,947
New +$744K 0.01% 1022

Other funds holding HALO

BlackRock
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
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Marshall Wace's HALO Position: Q1 2026 in Review

Marshall Wace reduced its Halozyme (HALO) stake by 76% in Q1 2026, selling an estimated $26.5M and leaving 121,006 shares worth $7.82M. The position accounts for 0.01% of the portfolio, ranked #1087.

Marshall Wace first reported a position in HALO in Q1 2019 and has held it in 15 quarters since. The position peaked at $104M in Q3 2023. 634 funds tracked by Wall St. Rank hold HALO as of Q1 2026.

  • Marshall Wace held 121,006 shares of Halozyme worth $7.82M as of Q1 2026.
  • Marshall Wace sold 376,194 Halozyme shares in Q1 2026, an estimated $26.5M.
  • Halozyme made up 0.01% of Marshall Wace's portfolio in Q1 2026, its #1087 holding.
  • Marshall Wace first reported a position in Halozyme in Q1 2019 and has held it in 15 quarters since.
  • Marshall Wace's Halozyme position peaked at $104M in Q3 2023.
  • 634 funds tracked by Wall St. Rank held Halozyme as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.