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XTX Topco’s AnaptysBio ANAB Stock Holding History

XTX Topco’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 		$1.45M Sell
21,411
-29,126
-58% -$1.77M 0.02% 1441
2026
Q1 		$2.8M Buy
50,537
+11,900
+31% +$640K 0.05% 602
2025
Q4 		$1.87M Buy
38,637
+20,526
+113% +$800K 0.05% 606
2025
Q3 		$555K Sell
18,111
-12,531
-41% -$288K 0.03% 991
2025
Q2 		$680K Buy
+30,642
New +$641K 0.03% 897
2025
Q1 		– Sell
-40,013
Closed -$530K – 2369
2024
Q4 		$530K Buy
40,013
+19,727
+97% +$478K 0.04% 726
2024
Q3 		$680K Buy
20,286
+6,683
+49% +$228K 0.05% 615
2024
Q2 		$341K Sell
13,603
-2,101
-13% -$48.9K 0.03% 877
2024
Q1 		$354K Buy
15,704
+5,023
+47% +$119K 0.05% 712
2023
Q4 		$229K Buy
+10,681
New +$184K 0.05% 852

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

XTX Topco's ANAB Position: Q2 2026 in Review

XTX Topco reduced its AnaptysBio (ANAB) stake by 58% in Q2 2026, selling an estimated $1.77M and leaving 21,411 shares worth $1.45M. The position accounts for 0.02% of the portfolio, ranked #1441.

XTX Topco first reported a position in ANAB in Q4 2023 and has held it in 10 quarters since. The position peaked at $2.8M in Q1 2026. 213 funds tracked by Wall St. Rank hold ANAB as of Q2 2026.

  • XTX Topco held 21,411 shares of AnaptysBio worth $1.45M as of Q2 2026.
  • XTX Topco sold 29,126 AnaptysBio shares in Q2 2026, an estimated $1.77M.
  • AnaptysBio made up 0.02% of XTX Topco's portfolio in Q2 2026, its #1441 holding.
  • XTX Topco first reported a position in AnaptysBio in Q4 2023 and has held it in 10 quarters since.
  • XTX Topco's AnaptysBio position peaked at $2.8M in Q1 2026.
  • 213 funds tracked by Wall St. Rank held AnaptysBio as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.