William Blair & Company
GRAL

William Blair & Company’s GRAIL Inc GRAL Stock Holding History

William Blair & Company’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 		$330K Buy
6,376
+1,020
+19% +$79K ﹤0.01% 1297
2025
Q4 		$458K Hold
5,356
– – ﹤0.01% 1177
2025
Q3 		$317K Buy
5,356
+268
+5% +$10.2K ﹤0.01% 1285
2025
Q2 		$262K Buy
+5,088
New +$184K ﹤0.01% 1309

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

William Blair & Company's GRAL Position: Q1 2026 in Review

William Blair & Company increased its GRAIL Inc (GRAL) stake by 19% in Q1 2026, buying an estimated $79K and bringing the position to 6,376 shares worth $330K. The position accounts for ﹤0.01% of the portfolio, ranked #1297.

William Blair & Company first reported a position in GRAL in Q2 2025 and has held it in 4 quarters since. The position peaked at $458K in Q4 2025. 365 funds tracked by Wall St. Rank hold GRAL as of Q1 2026.

  • William Blair & Company held 6,376 shares of GRAIL Inc worth $330K as of Q1 2026.
  • William Blair & Company bought 1,020 GRAIL Inc shares in Q1 2026, an estimated $79K.
  • GRAIL Inc made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #1297 holding.
  • William Blair & Company first reported a position in GRAIL Inc in Q2 2025 and has held it in 4 quarters since.
  • William Blair & Company's GRAIL Inc position peaked at $458K in Q4 2025.
  • 365 funds tracked by Wall St. Rank held GRAIL Inc as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.