AIM
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Aigen Investment Management’s Halozyme HALO Stock Holding History

Aigen Investment 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
2025
Q4 		– Sell
-3,714
Closed -$272K – 755
2025
Q3 		$272K Buy
+3,714
New +$247K 0.04% 569
2024
Q2 		– Sell
-24,033
Closed -$978K – 875
2024
Q1 		$978K Buy
24,033
+15,091
+169% +$566K 0.21% 148
2023
Q4 		$330K Buy
8,942
+2,361
+36% +$88.9K 0.06% 460
2023
Q3 		$251K Buy
+6,581
New +$270K 0.05% 586
2022
Q3 		– Sell
-23,084
Closed -$1.02M – 643
2022
Q2 		$1.02M Sell
23,084
-2,211
-9% -$95.6K 0.17% 177
2022
Q1 		$1.01M Buy
25,295
+10,769
+74% +$384K 0.17% 161
2021
Q4 		$486K Buy
14,526
+2,703
+23% +$101K 0.03% 633
2021
Q3 		$481K Buy
+11,823
New +$494K 0.09% 258
2021
Q2 		– Sell
-20,593
Closed -$859K – 584
2021
Q1 		$859K Sell
20,593
-12,189
-37% -$556K 0.11% 203
2020
Q4 		$1.4M Sell
32,782
-17,097
-34% -$615K 0.18% 149
2020
Q3 		$1.31M Buy
49,879
+41,717
+511% +$1.16M 0.17% 196
2020
Q2 		$219K Buy
8,162
+5,205
+176% +$117K 0.03% 689
2020
Q1 		$53K Sell
2,957
-37,575
-93% -$713K 0.01% 975
2019
Q4 		$719K Buy
+40,532
New +$702K 0.12% 248

Other funds holding HALO

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
SCM
Snyder Capital Management San Francisco, California $5.79B AUM 33.56% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Aigen Investment Management's HALO Position: Q4 2025 in Review

Aigen Investment Management sold out of Halozyme (HALO) in Q4 2025, closing a stake of 3,714 shares — an estimated $272K sold.

Aigen Investment Management first reported a position in HALO in Q4 2019 and held it in 14 quarters. The position peaked at $1.4M in Q4 2020. 619 funds tracked by Wall St. Rank hold HALO as of Q4 2025.

  • Aigen Investment Management reported no remaining Halozyme position as of Q4 2025 after selling out during the quarter.
  • Aigen Investment Management sold 3,714 Halozyme shares in Q4 2025, an estimated $272K.
  • Aigen Investment Management first reported a position in Halozyme in Q4 2019 and held it in 14 quarters.
  • Aigen Investment Management's Halozyme position peaked at $1.4M in Q4 2020.
  • 619 funds tracked by Wall St. Rank held Halozyme as of Q4 2025.

Based on Aigen Investment Management's 13F filing for Q4 2025, filed 13 Feb 2026.