State of Wisconsin Investment Board
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State of Wisconsin Investment Board’s Annexon ANNX Stock Holding History

State of Wisconsin Investment Board’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
Q1 		$276K Buy
+49,746
New +$280K ﹤0.01% 2246
2025
Q2 		– Sell
-81,636
Closed -$158K – 2318
2025
Q1 		$158K Buy
81,636
+12,388
+18% +$41.2K ﹤0.01% 2131
2024
Q4 		$355K Buy
69,248
+43,293
+167% +$266K ﹤0.01% 1948
2024
Q3 		$154K Sell
25,955
-38,354
-60% -$227K ﹤0.01% 2184
2024
Q2 		$315K Buy
+64,309
New +$333K ﹤0.01% 2014
2023
Q1 		– Sell
-26,800
Closed -$139K – 2547
2022
Q4 		$139K Sell
26,800
-17,000
-39% -$93.4K ﹤0.01% 2304
2022
Q3 		$271K Sell
43,800
-41,900
-49% -$227K ﹤0.01% 2272
2022
Q2 		$323K Sell
85,700
-61,500
-42% -$188K ﹤0.01% 2294
2022
Q1 		$402K Buy
147,200
+106,900
+265% +$658K ﹤0.01% 2011
2021
Q4 		$463K Hold
40,300
– – ﹤0.01% 1708
2021
Q3 		$750K Buy
40,300
+6,611
+20% +$134K ﹤0.01% 1546
2021
Q2 		$758K Buy
33,689
+12,889
+62% +$286K ﹤0.01% 1548
2021
Q1 		$579K Hold
20,800
– – ﹤0.01% 1549
2020
Q4 		$521K Buy
+20,800
New +$535K ﹤0.01% 1522

Other funds holding ANNX

RG
Redmile Group San Francisco, California $1.51B AUM 164.17% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BI
BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.11B AUM 171.34% 1-Year Est. Return
BG
Bellevue Group Kuesnacht, Switzerland $4.2B AUM 54.85% 1-Year Est. Return
MCO
MAK Capital One New York $679M AUM 29.02% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return

State of Wisconsin Investment Board's ANNX Position: Q1 2026 in Review

State of Wisconsin Investment Board opened a new position in Annexon (ANNX) in Q1 2026: 49,746 shares worth $276K. The stake represents ﹤0.01% of the portfolio and ranks #2246 among its holdings. This is a return to the name: State of Wisconsin Investment Board previously reported a position in ANNX as recently as Q1 2025.

State of Wisconsin Investment Board first reported a position in ANNX in Q4 2020 and has held it in 14 quarters since. The position peaked at $758K in Q2 2021. 217 funds tracked by Wall St. Rank hold ANNX as of Q1 2026.

  • State of Wisconsin Investment Board held 49,746 shares of Annexon worth $276K as of Q1 2026.
  • Annexon was a new State of Wisconsin Investment Board position in Q1 2026.
  • Annexon made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #2246 holding.
  • State of Wisconsin Investment Board first reported a position in Annexon in Q4 2020 and has held it in 14 quarters since.
  • State of Wisconsin Investment Board's Annexon position peaked at $758K in Q2 2021.
  • 217 funds tracked by Wall St. Rank held Annexon as of Q1 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.