Mariner
HALO icon

Mariner’s Halozyme HALO Stock Holding History

Mariner’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 		$4.86M Sell
62,044
-24,661
-28% -$1.68M 0.01% 1050
2026
Q1 		$5.6M Sell
86,705
-7,871
-8% -$555K 0.01% 1015
2025
Q4 		$6.37M Buy
94,576
+22,413
+31% +$1.51M 0.01% 903
2025
Q3 		$5.29M Buy
72,163
+8,079
+13% +$537K 0.01% 903
2025
Q2 		$3.33M Buy
64,084
+18,750
+41% +$1.07M ﹤0.01% 1049
2025
Q1 		$2.89M Buy
45,334
+19
+0% +$1.1K ﹤0.01% 1040
2024
Q4 		$2.17M Buy
45,315
+4,799
+12% +$246K ﹤0.01% 1175
2024
Q3 		$2.32M Sell
40,516
-327
-0.8% -$18.7K ﹤0.01% 1117
2024
Q2 		$2.14M Sell
40,843
-3,853
-9% -$169K ﹤0.01% 1081
2024
Q1 		$1.82M Sell
44,696
-1,205
-3% -$45.2K ﹤0.01% 1164
2023
Q4 		$1.7M Sell
45,901
-12,807
-22% -$482K ﹤0.01% 1133
2023
Q3 		$2.24M Sell
58,708
-14,116
-19% -$578K 0.01% 919
2023
Q2 		$2.63M Sell
72,824
-5,737
-7% -$196K 0.01% 871
2023
Q1 		$3M Sell
78,561
-3,394
-4% -$159K 0.01% 801
2022
Q4 		$4.66M Sell
81,955
-1,503
-2% -$77K 0.02% 630
2022
Q3 		$3.3M Buy
83,458
+72,762
+680% +$3.22M 0.01% 619
2022
Q2 		$471K Buy
+10,696
New +$463K ﹤0.01% 1150

Other funds holding HALO

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return

Mariner's HALO Position: Q2 2026 in Review

Mariner reduced its Halozyme (HALO) stake by 28% in Q2 2026, selling an estimated $1.68M and leaving 62,044 shares worth $4.86M. The position accounts for 0.01% of the portfolio, ranked #1050.

Mariner first reported a position in HALO in Q2 2022 and has held it in 17 quarters since. The position peaked at $6.37M in Q4 2025. 671 funds tracked by Wall St. Rank hold HALO as of Q2 2026.

  • Mariner held 62,044 shares of Halozyme worth $4.86M as of Q2 2026.
  • Mariner sold 24,661 Halozyme shares in Q2 2026, an estimated $1.68M.
  • Halozyme made up 0.01% of Mariner's portfolio in Q2 2026, its #1050 holding.
  • Mariner first reported a position in Halozyme in Q2 2022 and has held it in 17 quarters since.
  • Mariner's Halozyme position peaked at $6.37M in Q4 2025.
  • 671 funds tracked by Wall St. Rank held Halozyme as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.