Mariner
GRAL

Mariner’s GRAIL Inc GRAL Stock Holding History

Mariner’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 		$808K Sell
15,632
-6,127
-28% -$475K ﹤0.01% 2119
2025
Q4 		$1.86M Buy
21,759
+6,256
+40% +$540K ﹤0.01% 1544
2025
Q3 		$917K Sell
15,503
-805
-5% -$30.8K ﹤0.01% 1979
2025
Q2 		$838K Buy
+16,308
New +$590K ﹤0.01% 1935
2025
Q1 		– Sell
-10,619
Closed -$190K – 3609
2024
Q4 		$190K Buy
+10,619
New +$173K ﹤0.01% 3020

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

Mariner's GRAL Position: Q1 2026 in Review

Mariner reduced its GRAIL Inc (GRAL) stake by 28% in Q1 2026, selling an estimated $475K and leaving 15,632 shares worth $808K. The position accounts for ﹤0.01% of the portfolio, ranked #2119.

Mariner first reported a position in GRAL in Q4 2024 and has held it in 5 quarters since. The position peaked at $1.86M in Q4 2025. 364 funds tracked by Wall St. Rank hold GRAL as of Q1 2026.

  • Mariner held 15,632 shares of GRAIL Inc worth $808K as of Q1 2026.
  • Mariner sold 6,127 GRAIL Inc shares in Q1 2026, an estimated $475K.
  • GRAIL Inc made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #2119 holding.
  • Mariner first reported a position in GRAIL Inc in Q4 2024 and has held it in 5 quarters since.
  • Mariner's GRAIL Inc position peaked at $1.86M in Q4 2025.
  • 364 funds tracked by Wall St. Rank held GRAIL Inc as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.