Primecap Management’s GRAIL Inc GRAL Stock Holding History

Primecap Management’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 Q2	$149M	Buy	2,180,106 +336,334	+18%	+$19.8M	0.09%	137
2026 Q1	$95.3M	Buy	1,843,772 +5,088	+0.3%	+$394K	0.08%	155
2025 Q4	$157M	Sell	1,838,684 -182,256	-9%	-$15.7M	0.12%	121
2025 Q3	$119M	Sell	2,020,940 -33,346	-2%	-$1.27M	0.09%	139
2025 Q2	$106M	Buy	2,054,286 +2,714	+0.1%	+$98.2K	0.08%	146
2025 Q1	$52.4M	Sell	2,051,572 -27,844	-1%	-$860K	0.04%	177
2024 Q4	$37.1M	Sell	2,079,416 -103,090	-5%	-$1.68M	0.03%	207
2024 Q3	$30M	Buy	2,182,506 +317,230	+17%	+$4.81M	0.02%	216
2024 Q2	$28.7M	Buy	+1,865,276	New	+$30.3M	0.02%	215

Other funds holding GRAL

FCM

Farallon Capital Management San Francisco, California $21.7B AUM 79.24% 1-Year Est. Return

BBA

Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Sessa Capital New York $5.98B AUM 99.85% 1-Year Est. Return

DTC

Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

APCM

Arbiter Partners Capital Management New York $190M AUM 50.42% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Primecap Management's GRAL Position: Q2 2026 in Review

Primecap Management increased its GRAIL Inc (GRAL) stake by 18% in Q2 2026, buying an estimated $19.8M and bringing the position to 2,180,106 shares worth $149M. The position accounts for 0.09% of the portfolio, ranked #137.

Primecap Management first reported a position in GRAL in Q2 2024 and has held it in 9 quarters since. The position peaked at $157M in Q4 2025. 373 funds tracked by Wall St. Rank hold GRAL as of Q2 2026.

Primecap Management held 2,180,106 shares of GRAIL Inc worth $149M as of Q2 2026.
Primecap Management bought 336,334 GRAIL Inc shares in Q2 2026, an estimated $19.8M.
GRAIL Inc made up 0.09% of Primecap Management's portfolio in Q2 2026, its #137 holding.
Primecap Management first reported a position in GRAIL Inc in Q2 2024 and has held it in 9 quarters since.
Primecap Management's GRAIL Inc position peaked at $157M in Q4 2025.
373 funds tracked by Wall St. Rank held GRAIL Inc as of Q2 2026.

Based on Primecap Management's 13F filing for Q2 2026, filed 14 Aug 2026.