Citadel Advisors’s Halozyme HALO Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $12.3M | Buy |
+191,051
| New | +$13.5M | ﹤0.01% | 2954 |
|
|
2025
Q4 | – | Sell |
-244,801
| Closed | -$16.5M | – | 13209 |
|
|
2025
Q3 | $18M | Sell |
244,801
-66,597
| -21% | -$4.42M | ﹤0.01% | 2474 |
|
|
2025
Q2 | $16.2M | Buy |
311,398
+231,991
| +292% | +$13.2M | ﹤0.01% | 2400 |
|
|
2025
Q1 | $5.07M | Sell |
79,407
-1,183,350
| -94% | -$68.7M | ﹤0.01% | 3848 |
|
|
2024
Q4 | $60.4M | Buy |
+1,262,757
| New | +$64.8M | 0.01% | 1117 |
|
|
2024
Q3 | – | Sell |
-347,699
| Closed | -$19.9M | – | 14611 |
|
|
2024
Q2 | $18.2M | Buy |
347,699
+46,333
| +15% | +$2.03M | ﹤0.01% | 2087 |
|
|
2024
Q1 | $12.3M | Buy |
301,366
+116,602
| +63% | +$4.37M | ﹤0.01% | 2658 |
|
|
2023
Q4 | $6.83M | Buy |
184,764
+254
| +0.1% | +$9.57K | ﹤0.01% | 3359 |
|
|
2023
Q3 | $7.05M | Sell |
184,510
-967,309
| -84% | -$39.6M | ﹤0.01% | 3148 |
|
|
2023
Q2 | $41.5M | Buy |
1,151,819
+230,398
| +25% | +$7.86M | 0.01% | 1206 |
|
|
2023
Q1 | $35.2M | Buy |
921,421
+669,147
| +265% | +$31.4M | 0.01% | 1391 |
|
|
2022
Q4 | $14.4M | Buy |
252,274
+232,326
| +1,165% | +$11.9M | ﹤0.01% | 2351 |
|
|
2022
Q3 | $789K | Sell |
19,948
-522,398
| -96% | -$23.1M | ﹤0.01% | 7499 |
|
|
2022
Q2 | $23.9M | Buy |
542,346
+532,478
| +5,396% | +$23M | 0.01% | 1664 |
|
|
2022
Q1 | $394K | Sell |
9,868
-137,702
| -93% | -$4.9M | ﹤0.01% | 9943 |
|
|
2021
Q4 | $5.93M | Buy |
147,570
+80,421
| +120% | +$3M | ﹤0.01% | 4003 |
|
|
2021
Q3 | $2.73M | Sell |
67,149
-37,252
| -36% | -$1.56M | ﹤0.01% | 5582 |
|
|
2021
Q2 | $4.74M | Sell |
104,401
-62,785
| -38% | -$2.78M | ﹤0.01% | 4564 |
|
|
2021
Q1 | $6.97M | Buy |
167,186
+4,559
| +3% | +$208K | ﹤0.01% | 3593 |
|
|
2020
Q4 | $6.95M | Sell |
162,627
-42,773
| -21% | -$1.54M | ﹤0.01% | 3133 |
|
|
2020
Q3 | $5.4M | Sell |
205,400
-84,316
| -29% | -$2.35M | ﹤0.01% | 3034 |
|
|
2020
Q2 | $7.77M | Sell |
289,716
-90,572
| -24% | -$2.04M | ﹤0.01% | 2523 |
|
|
2020
Q1 | $6.84M | Buy |
380,288
+98,911
| +35% | +$1.88M | ﹤0.01% | 2313 |
|
|
2019
Q4 | $4.99M | Buy |
281,377
+8,439
| +3% | +$146K | ﹤0.01% | 3082 |
|
|
2019
Q3 | $4.23M | Sell |
272,938
-655,754
| -71% | -$10.8M | ﹤0.01% | 3334 |
|
|
2019
Q2 | $16M | Buy |
928,692
+310,599
| +50% | +$5.01M | 0.01% | 1647 |
|
|
2019
Q1 | $9.95M | Buy |
618,093
+368,770
| +148% | +$5.98M | ﹤0.01% | 2082 |
|
|
2018
Q4 | $3.65M | Sell |
249,323
-3,299
| -1% | -$52.6K | ﹤0.01% | 3250 |
|
|
2018
Q3 | $4.59M | Buy |
252,622
+127,877
| +103% | +$2.24M | ﹤0.01% | 3123 |
|
|
2018
Q2 | $2.1M | Buy |
124,745
+70,296
| +129% | +$1.33M | ﹤0.01% | 4033 |
|
|
2018
Q1 | $1.07M | Sell |
54,449
-96,814
| -64% | -$1.87M | ﹤0.01% | 4715 |
|
|
2017
Q4 | $3.06M | Buy |
151,263
+125,642
| +490% | +$2.31M | ﹤0.01% | 3067 |
|
|
2017
Q3 | $445K | Sell |
25,621
-211,157
| -89% | -$2.86M | ﹤0.01% | 5490 |
|
|
2017
Q2 | $3.04M | Buy |
236,778
+206,052
| +671% | +$2.75M | ﹤0.01% | 2645 |
|
|
2017
Q1 | $398K | Sell |
30,726
-222,226
| -88% | -$2.81M | ﹤0.01% | 5416 |
|
|
2016
Q4 | $2.5M | Buy |
252,952
+221,260
| +698% | +$2.42M | ﹤0.01% | 2693 |
|
|
2016
Q3 | $383K | Sell |
31,692
-13,913
| -31% | -$142K | ﹤0.01% | 5268 |
|
|
2016
Q2 | $394K | Buy |
+45,605
| New | +$450K | ﹤0.01% | 4810 |
|
|
2016
Q1 | – | Sell |
-89,623
| Closed | -$843K | – | 7243 |
|
|
2015
Q4 | $1.55M | Sell |
89,623
-189,870
| -68% | -$3.03M | ﹤0.01% | 3031 |
|
|
2015
Q3 | $3.75M | Buy |
279,493
+245,332
| +718% | +$4.93M | ﹤0.01% | 2231 |
|
|
2015
Q2 | $771K | Sell |
34,161
-242,774
| -88% | -$4.27M | ﹤0.01% | 4332 |
|
|
2015
Q1 | $3.96M | Buy |
276,935
+255,605
| +1,198% | +$3.69M | ﹤0.01% | 2275 |
|
|
2014
Q4 | $206K | Sell |
21,330
-170,708
| -89% | -$1.52M | ﹤0.01% | 5951 |
|
|
2014
Q3 | $1.75M | Sell |
192,038
-5,160
| -3% | -$49.1K | ﹤0.01% | 3004 |
|
|
2014
Q2 | $1.95M | Buy |
197,198
+107,293
| +119% | +$910K | ﹤0.01% | 2751 |
|
|
2014
Q1 | $1.14M | Sell |
89,905
-41,659
| -32% | -$618K | ﹤0.01% | 3269 |
|
|
2013
Q4 | $1.97M | Buy |
131,564
+97,497
| +286% | +$1.25M | ﹤0.01% | 2565 |
|
|
2013
Q3 | $376K | Sell |
34,067
-427,587
| -93% | -$3.56M | ﹤0.01% | 4112 |
|
|
2013
Q2 | $3.67M | Buy |
+461,654
| New | +$2.94M | 0.01% | 1860 |
|
Other funds holding HALO
VCM
VPM
Citadel Advisors's HALO Position: Q1 2026 in Review
Citadel Advisors opened a new position in Halozyme (HALO) in Q1 2026: 191,051 shares worth $12.3M. The stake represents ﹤0.01% of the portfolio and ranks #2954 among its holdings. This is a return to the name: Citadel Advisors previously reported a position in HALO as recently as Q3 2025.
Citadel Advisors first reported a position in HALO in Q2 2013 and has held it in 49 quarters since. The position peaked at $60.4M in Q4 2024. 634 funds tracked by Wall St. Rank hold HALO as of Q1 2026.
- Citadel Advisors held 191,051 shares of Halozyme worth $12.3M as of Q1 2026.
- Halozyme was a new Citadel Advisors position in Q1 2026.
- Halozyme made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #2954 holding.
- Citadel Advisors first reported a position in Halozyme in Q2 2013 and has held it in 49 quarters since.
- Citadel Advisors's Halozyme position peaked at $60.4M in Q4 2024.
- 634 funds tracked by Wall St. Rank held Halozyme as of Q1 2026.
Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.