State of Wisconsin Investment Board
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State of Wisconsin Investment Board’s AnaptysBio ANAB Stock Holding History

State of Wisconsin Investment Board’s Portfolio ANAB Stock Details ANAB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$4.17M Buy
61,753
+34,134
+124% +$2.07M 0.01% 1137
2026
Q1 		$1.53M Buy
27,619
+18,664
+208% +$1M ﹤0.01% 1512
2025
Q4 		$434K Buy
+8,955
New +$349K ﹤0.01% 2010
2025
Q1 		– Sell
-26,677
Closed -$353K – 2246
2024
Q4 		$353K Buy
26,677
+6,804
+34% +$165K ﹤0.01% 1950
2024
Q3 		$666K Buy
19,873
+10,543
+113% +$360K ﹤0.01% 1735
2024
Q2 		$234K Buy
+9,330
New +$217K ﹤0.01% 2101
2023
Q4 		– Sell
-14,340
Closed -$258K – 2370
2023
Q3 		$258K Sell
14,340
-361
-2% -$6.89K ﹤0.01% 2126
2023
Q2 		$299K Sell
14,701
-609
-4% -$12.3K ﹤0.01% 1999
2023
Q1 		$333K Sell
15,310
-1,703
-10% -$41.4K ﹤0.01% 2046
2022
Q4 		$527K Sell
17,013
-1,043
-6% -$29.5K ﹤0.01% 1877
2022
Q3 		$461K Sell
18,056
-844
-4% -$19.8K ﹤0.01% 2016
2022
Q2 		$384K Sell
18,900
-9,900
-34% -$219K ﹤0.01% 2210
2022
Q1 		$713K Sell
28,800
-8,900
-24% -$269K ﹤0.01% 1716
2021
Q4 		$1.31M Buy
37,700
+6,600
+21% +$209K ﹤0.01% 1369
2021
Q3 		$843K Buy
31,100
+2,300
+8% +$58.4K ﹤0.01% 1495
2021
Q2 		$747K Hold
28,800
– – ﹤0.01% 1554
2021
Q1 		$621K Sell
28,800
-4,900
-15% -$124K ﹤0.01% 1514
2020
Q4 		$725K Sell
33,700
-4,200
-11% -$102K ﹤0.01% 1419
2020
Q3 		$559K Hold
37,900
– – ﹤0.01% 1442
2020
Q2 		$847K Sell
37,900
-6,700
-15% -$122K ﹤0.01% 1274
2020
Q1 		$630K Buy
44,600
+7,800
+21% +$118K ﹤0.01% 1288
2019
Q4 		$598K Hold
36,800
– – ﹤0.01% 1379
2019
Q3 		$1.29M Buy
36,800
+6,100
+20% +$290K ﹤0.01% 1089
2019
Q2 		$1.73M Buy
30,700
+2,000
+7% +$144K ﹤0.01% 1040
2019
Q1 		$2.1M Buy
28,700
+9,100
+46% +$628K 0.01% 997
2018
Q4 		$1.25M Buy
19,600
+700
+4% +$52.1K ﹤0.01% 1066
2018
Q3 		$1.89M Hold
18,900
– – 0.01% 1048
2018
Q2 		$1.34M Buy
18,900
+700
+4% +$58.7K ﹤0.01% 1074
2018
Q1 		$1.89M Buy
18,200
+6,300
+53% +$710K 0.01% 979
2017
Q4 		$1.2M Buy
+11,900
New +$876K ﹤0.01% 1064

Other funds holding ANAB

EC
EcoR1 Capital San Francisco, California $2.06B AUM 215.32% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $2.2B AUM 156.35% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AAA
Affinity Asset Advisors New York $2.21B AUM 431.26% 1-Year Est. Return
S
Sanofi Paris, France $534M AUM 205.96% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return
6CM
683 Capital Management New York $2.04B AUM 94.26% 1-Year Est. Return

State of Wisconsin Investment Board's ANAB Position: Q2 2026 in Review

State of Wisconsin Investment Board increased its AnaptysBio (ANAB) stake by 124% in Q2 2026, buying an estimated $2.07M and bringing the position to 61,753 shares worth $4.17M. The position accounts for 0.01% of the portfolio, ranked #1137.

State of Wisconsin Investment Board first reported a position in ANAB in Q4 2017 and has held it in 30 quarters since. 213 funds tracked by Wall St. Rank hold ANAB as of Q2 2026.

  • State of Wisconsin Investment Board held 61,753 shares of AnaptysBio worth $4.17M as of Q2 2026.
  • State of Wisconsin Investment Board bought 34,134 AnaptysBio shares in Q2 2026, an estimated $2.07M.
  • AnaptysBio made up 0.01% of State of Wisconsin Investment Board's portfolio in Q2 2026, its #1137 holding.
  • State of Wisconsin Investment Board first reported a position in AnaptysBio in Q4 2017 and has held it in 30 quarters since.
  • 213 funds tracked by Wall St. Rank held AnaptysBio as of Q2 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q2 2026, filed 14 Aug 2026.