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PDT Partners’s Halozyme HALO Stock Holding History

PDT Partners’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
-67,685
Closed -$4.96M – 602
2025
Q3 		$4.96M Sell
67,685
-1
-0% -$66 0.31% 107
2025
Q2 		$3.52M Sell
67,686
-39,439
-37% -$2.24M 0.2% 180
2025
Q1 		$6.84M Buy
107,125
+23,063
+27% +$1.34M 0.49% 22
2024
Q4 		$4.02M Buy
84,062
+66,647
+383% +$3.42M 0.36% 74
2024
Q3 		$997K Hold
17,415
– – 0.09% 366
2024
Q2 		$912K Sell
17,415
-29
-0.2% -$1.27K 0.09% 359
2024
Q1 		$710K Sell
17,444
-15,437
-47% -$579K 0.07% 393
2023
Q4 		$1.22M Buy
+32,881
New +$1.24M 0.13% 254
2022
Q4 		– Sell
-6,000
Closed -$237K – 742
2022
Q3 		$237K Buy
+6,000
New +$265K 0.04% 662
2022
Q1 		– Sell
-28,002
Closed -$1.13M – 995
2021
Q4 		$1.13M Buy
28,002
+5,301
+23% +$198K 0.09% 339
2021
Q3 		$923K Buy
+22,701
New +$949K 0.07% 362
2020
Q2 		– Sell
-125,603
Closed -$2.26M – 727
2020
Q1 		$2.26M Buy
125,603
+27,669
+28% +$525K 0.18% 151
2019
Q4 		$1.74M Buy
97,934
+9,534
+11% +$165K 0.11% 206
2019
Q3 		$1.37M Hold
88,400
– – 0.08% 245
2019
Q2 		$1.52M Sell
88,400
-31
-0% -$500 0.09% 215
2019
Q1 		$1.42M Sell
88,431
-152,449
-63% -$2.47M 0.08% 232
2018
Q4 		$3.52M Sell
240,880
-19,564
-8% -$312K 0.2% 148
2018
Q3 		$4.73M Sell
260,444
-91,856
-26% -$1.61M 0.2% 148
2018
Q2 		$5.94M Sell
352,300
-1,089
-0.3% -$20.6K 0.23% 140
2018
Q1 		$6.92M Sell
353,389
-57,630
-14% -$1.12M 0.23% 139
2017
Q4 		$8.33M Buy
+411,019
New +$7.56M 0.24% 140
2015
Q3 		– Sell
-29,096
Closed -$657K – 1392
2015
Q2 		$657K Buy
+29,096
New +$511K 0.02% 886
2014
Q2 		– Sell
-38,899
Closed -$494K – 1486
2014
Q1 		$494K Buy
+38,899
New +$577K 0.01% 959

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 $3.37T AUM 44.26% 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

PDT Partners's HALO Position: Q4 2025 in Review

PDT Partners sold out of Halozyme (HALO) in Q4 2025, closing a stake of 67,685 shares — an estimated $4.96M sold.

PDT Partners first reported a position in HALO in Q1 2014 and held it in 23 quarters. The position peaked at $8.33M in Q4 2017. 618 funds tracked by Wall St. Rank hold HALO as of Q4 2025.

  • PDT Partners reported no remaining Halozyme position as of Q4 2025 after selling out during the quarter.
  • PDT Partners sold 67,685 Halozyme shares in Q4 2025, an estimated $4.96M.
  • PDT Partners first reported a position in Halozyme in Q1 2014 and held it in 23 quarters.
  • PDT Partners's Halozyme position peaked at $8.33M in Q4 2017.
  • 618 funds tracked by Wall St. Rank held Halozyme as of Q4 2025.

Based on PDT Partners's 13F filing for Q4 2025, filed 17 Feb 2026.