Simplex Trading
GRAL

Simplex Trading’s GRAIL Inc GRAL Stock Holding History

Simplex Trading’s Portfolio GRAL Stock Details GRAL Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$131K Sell
2,541
-13,510
-84% -$1.05M ﹤0.01% 4771
2025
Q4 		$1.37M Buy
+16,051
New +$1.39M ﹤0.01% 2306
2025
Q2 		– Sell
-8,169
Closed -$296K – 9944
2025
Q1 		$208K Buy
8,169
+3,960
+94% +$122K ﹤0.01% 4288
2024
Q4 		$75K Buy
+4,209
New +$68.4K ﹤0.01% 5460

Other funds holding GRAL

BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
FCM
Farallon Capital Management San Francisco, California $17.5B AUM 50.95% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.12B AUM 144% 1-Year Est. Return
SC
Sessa Capital New York $5.51B AUM 47.23% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
APCM
Arbiter Partners Capital Management New York $175M AUM 99.81% 1-Year Est. Return

Simplex Trading's GRAL Position: Q1 2026 in Review

Simplex Trading reduced its GRAIL Inc (GRAL) stake by 84% in Q1 2026, selling an estimated $1.05M and leaving 2,541 shares worth $131K. The position accounts for ﹤0.01% of the portfolio, ranked #4771.

Simplex Trading first reported a position in GRAL in Q4 2024 and has held it in 4 quarters since. The position peaked at $1.37M in Q4 2025. 365 funds tracked by Wall St. Rank hold GRAL as of Q1 2026.

  • Simplex Trading held 2,541 shares of GRAIL Inc worth $131K as of Q1 2026.
  • Simplex Trading sold 13,510 GRAIL Inc shares in Q1 2026, an estimated $1.05M.
  • GRAIL Inc made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #4771 holding.
  • Simplex Trading first reported a position in GRAIL Inc in Q4 2024 and has held it in 4 quarters since.
  • Simplex Trading's GRAIL Inc position peaked at $1.37M in Q4 2025.
  • 365 funds tracked by Wall St. Rank held GRAIL Inc as of Q1 2026.

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