XT
HOWL icon

XTX Topco’s Werewolf Therapeutics HOWL Stock Holding History

XTX Topco’s Portfolio HOWL Stock Details HOWL Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$97.7K Buy
271,478
+220,549
+433% +$134K ﹤0.01% 3541
2026
Q1 		$42.4K Buy
+50,929
New +$34.9K ﹤0.01% 3360
2025
Q1 		– Sell
-24,905
Closed -$36.9K – 2681
2024
Q4 		$36.9K Buy
24,905
+3,696
+17% +$7.54K ﹤0.01% 1945
2024
Q3 		$45K Buy
+21,209
New +$48.2K ﹤0.01% 1711

Other funds holding HOWL

RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $80.2B AUM 51.53% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
LCM
Lynx1 Capital Management San Juan, Puerto Rico $866M AUM 231.68% 1-Year Est. Return
SFM
Sphera Funds Management Tel Aviv, Israel $767M AUM 119.71% 1-Year Est. Return
DF
DC Funds Mclean, Virginia $1.25M AUM 26.51% 1-Year Est. Return
VA
Verdad Advisers Boston, Massachusetts $104M AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

XTX Topco's HOWL Position: Q2 2026 in Review

XTX Topco increased its Werewolf Therapeutics (HOWL) stake by 433% in Q2 2026, buying an estimated $134K and bringing the position to 271,478 shares worth $97.7K. The position accounts for ﹤0.01% of the portfolio, ranked #3541.

XTX Topco first reported a position in HOWL in Q3 2024 and has held it in 4 quarters since. 45 funds tracked by Wall St. Rank hold HOWL as of Q2 2026.

  • XTX Topco held 271,478 shares of Werewolf Therapeutics worth $97.7K as of Q2 2026.
  • XTX Topco bought 220,549 Werewolf Therapeutics shares in Q2 2026, an estimated $134K.
  • Werewolf Therapeutics made up ﹤0.01% of XTX Topco's portfolio in Q2 2026, its #3541 holding.
  • XTX Topco first reported a position in Werewolf Therapeutics in Q3 2024 and has held it in 4 quarters since.
  • 45 funds tracked by Wall St. Rank held Werewolf Therapeutics as of Q2 2026.

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