Simplex Trading
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Simplex Trading’s Werewolf Therapeutics HOWL Stock Holding History

Simplex Trading’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
2025
Q3 		– Sell
-7,900
Closed -$8K – 9447
2025
Q2 		$8K Buy
7,900
+6,700
+558% +$6.9K ﹤0.01% 7467
2025
Q1 		$1K Sell
1,200
-300
-20% -$393 ﹤0.01% 8217
2024
Q4 		$2K Buy
+1,500
New +$3.06K ﹤0.01% 8017
2023
Q4 		– Sell
-3,700
Closed -$7K – 9232
2023
Q3 		$7K Sell
3,700
-100
-3% -$276 ﹤0.01% 7419
2023
Q2 		$11K Buy
+3,800
New +$10.7K ﹤0.01% 7312

Other funds holding HOWL

RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
MB
MPM BioImpact Boston, Massachusetts $1.29B AUM 141.72% 1-Year Est. Return
LCM
Lynx1 Capital Management San Juan, Puerto Rico $633M AUM 173.22% 1-Year Est. Return
SFM
Sphera Funds Management Tel Aviv, Israel $630M AUM 108.65% 1-Year Est. Return
DF
DC Funds Mclean, Virginia $1.49M AUM 18.57% 1-Year Est. Return
SCM
Squadron Capital Management Westmont, Illinois $273M AUM
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Simplex Trading's HOWL Position: Q1 2026 in Review

Simplex Trading increased its Werewolf Therapeutics (HOWL) stake by 35% in Q1 2026, buying an estimated $5.8K and bringing the position to 32,526 shares worth $27.1K. The position accounts for ﹤0.01% of the portfolio, ranked #6494.

Simplex Trading first reported a position in HOWL in Q2 2023 and has held it in 12 quarters since. The position peaked at $30K in Q3 2025. 48 funds tracked by Wall St. Rank hold HOWL as of Q1 2026.

  • Simplex Trading held 32,526 shares of Werewolf Therapeutics worth $27.1K as of Q1 2026.
  • Simplex Trading bought 8,472 Werewolf Therapeutics shares in Q1 2026, an estimated $5.8K.
  • Werewolf Therapeutics made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #6494 holding.
  • Simplex Trading first reported a position in Werewolf Therapeutics in Q2 2023 and has held it in 12 quarters since.
  • Simplex Trading's Werewolf Therapeutics position peaked at $30K in Q3 2025.
  • 48 funds tracked by Wall St. Rank held Werewolf Therapeutics as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.