Adage Capital Partners
ANNX icon

Adage Capital Partners’s Annexon ANNX Stock Holding History

Adage Capital Partners’s Portfolio ANNX Stock Details ANNX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$20M Sell
3,500,000
-800,000
-19% -$4.42M 0.03% 496
2026
Q1 		$23.8M Sell
4,300,000
-1,200,000
-22% -$6.76M 0.04% 427
2025
Q4 		$27.6M Buy
5,500,000
+4,000,000
+267% +$15.3M 0.04% 394
2025
Q3 		$4.58M Buy
+1,500,000
New +$3.72M 0.01% 744
2024
Q4 		– Sell
-2,840,145
Closed -$16.8M – 874
2024
Q3 		$16.8M Hold
2,840,145
– – 0.03% 498
2024
Q2 		$13.9M Sell
2,840,145
-1,479,830
-34% -$7.65M 0.03% 528
2024
Q1 		$31M Sell
4,319,975
-680,000
-14% -$3.53M 0.06% 344
2023
Q4 		$22.7M Buy
4,999,975
+2,650,000
+113% +$6.56M 0.05% 395
2023
Q3 		$5.55M Hold
2,349,975
– – 0.01% 656
2023
Q2 		$8.27M Sell
2,349,975
-1,200,000
-34% -$5.25M 0.02% 601
2023
Q1 		$13.7M Hold
3,549,975
– – 0.03% 541
2022
Q4 		$18.4M Sell
3,549,975
-43,000
-1% -$236K 0.04% 459
2022
Q3 		$22.2M Buy
3,592,975
+2,637,345
+276% +$14.3M 0.06% 378
2022
Q2 		$3.6M Sell
955,630
-4,200
-0.4% -$12.8K 0.01% 835
2022
Q1 		$2.62M Hold
959,830
– – 0.01% 882
2021
Q4 		$11M Sell
959,830
-50,000
-5% -$808K 0.02% 665
2021
Q3 		$18.8M Buy
1,009,830
+50,000
+5% +$1.01M 0.04% 478
2021
Q2 		$21.6M Sell
959,830
-50,000
-5% -$1.11M 0.04% 439
2021
Q1 		$28.1M Hold
1,009,830
– – 0.06% 347
2020
Q4 		$25.3M Sell
1,009,830
-100,000
-9% -$2.57M 0.06% 353
2020
Q3 		$33.5M Buy
+1,109,830
New +$26M 0.08% 249

Other funds holding ANNX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RG
Redmile Group San Francisco, California $1.49B AUM 208.7% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
BI
BVF Inc San Francisco, California $3.91B AUM 304.52% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
MCO
MAK Capital One New York $714M AUM 68.07% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $4.94B AUM 244.43% 1-Year Est. Return

Adage Capital Partners's ANNX Position: Q2 2026 in Review

Adage Capital Partners reduced its Annexon (ANNX) stake by 19% in Q2 2026, selling an estimated $4.42M and leaving 3,500,000 shares worth $20M. The position accounts for 0.03% of the portfolio, ranked #496.

Adage Capital Partners first reported a position in ANNX in Q3 2020 and has held it in 21 quarters since. The position peaked at $33.5M in Q3 2020. 216 funds tracked by Wall St. Rank hold ANNX as of Q2 2026.

  • Adage Capital Partners held 3,500,000 shares of Annexon worth $20M as of Q2 2026.
  • Adage Capital Partners sold 800,000 Annexon shares in Q2 2026, an estimated $4.42M.
  • Annexon made up 0.03% of Adage Capital Partners's portfolio in Q2 2026, its #496 holding.
  • Adage Capital Partners first reported a position in Annexon in Q3 2020 and has held it in 21 quarters since.
  • Adage Capital Partners's Annexon position peaked at $33.5M in Q3 2020.
  • 216 funds tracked by Wall St. Rank held Annexon as of Q2 2026.

Based on Adage Capital Partners's 13F filing for Q2 2026, filed 14 Aug 2026.