GRAIL INC (GRAL) Institutional Shareholders
GRAIL INC (GRAL) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $2.29B in GRAL holdings during the latest filing period.
Baker Bros. Advisors Lp is currently the largest disclosed institutional shareholder of GRAL tracked by InsiderSet, reporting ownership valued at approximately $275.03M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $322.09M, representing an estimated gain of +17.11% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 63% of the total disclosed GRAL value among the investors covered in this analysis. Major shareholders include Baker Bros. Advisors Lp, Blackrock, Inc., State Street Corp, and several other long-term asset managers with concentrated positions in GRAIL INC (GRAL).
This page ranks the largest institutional GRAL shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
366
Total Reported Value
$2.29B
Largest Holder
Baker Bros. Advisors Lp
Largest Position
$275.03M
Insider Transactions (90d)
5
Latest Filing Quarter
Q2 2026
New Institutional Positions
51
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Baker Bros. Advisors Lp | 1.38% | 4,028,614 | $275,033,478 | $322,087,689 | +$47,054,211 | +17.11% | |
| Blackrock, Inc. | 0.00% | 3,577,075 | $244,206,968 | $285,987,146 | +$41,780,178 | +17.11% | |
| State Street Corp | 0.00% | 2,385,514 | $162,859,041 | $190,721,844 | +$27,862,803 | +17.11% | |
| Primecap Management Co/Ca/ | 0.09% | 2,180,106 | $148,835,838 | $174,299,475 | +$25,463,637 | +17.11% | |
| Sessa Capital Im, L.P. | 2.41% | 2,037,518 | $139,101,354 | $162,899,564 | +$23,798,210 | +17.11% | |
| Deep Track Capital, Lp | 1.85% | 1,834,944 | $125,271,627 | $146,703,773 | +$21,432,146 | +17.11% | |
| Vanguard Capital Management Llc | 0.00% | 1,641,117 | $112,039,058 | $131,207,304 | +$19,168,246 | +17.11% | |
| Morgan Stanley | 0.01% | 1,462,163 | $99,821,986 | $116,899,932 | +$17,077,946 | +17.11% | |
| Arbiter Partners Capital Management | Paul Isaac | 37.73% | 1,034,297 | $70,611,456 | $82,692,045 | +$12,080,589 | +17.11% |
| Geode Capital Management, Llc | 0.00% | 991,380 | $67,690,664 | $79,260,831 | +$11,570,167 | +17.09% | |
| Goldman Sachs Group Inc | 0.01% | 748,015 | $51,066,984 | $59,803,799 | +$8,736,815 | +17.11% | |
| Jefferies Financial Group Inc. | 0.45% | 724,000 | $49,427,480 | $57,883,800 | +$8,456,320 | +17.11% | |
| Bank Of America Corp | 0.00% | 723,437 | $49,389,043 | $57,838,788 | +$8,449,745 | +17.11% | |
| Dimensional Fund Advisors Lp | 0.01% | 679,587 | $46,395,822 | $54,332,981 | +$7,937,159 | +17.11% | |
| Casdin Capital, Llc | 1.64% | 480,000 | $32,769,600 | $38,376,000 | +$5,606,400 | +17.11% | |
| Vanguard Portfolio Management Llc | 0.00% | 477,982 | $32,631,831 | $38,214,661 | +$5,582,830 | +17.11% | |
| Northern Trust Corp | 0.00% | 372,588 | $25,436,582 | $29,788,411 | +$4,351,829 | +17.11% | |
| Citigroup Inc | 0.01% | 371,253 | $25,345,470 | $29,681,677 | +$4,336,207 | +17.11% | |
| Kingdon Capital Management, L.L.C. | 3.13% | 340,000 | $23,211,800 | $27,183,000 | +$3,971,200 | +17.11% | |
| Granahan Investment Management, Llc | 0.78% | 321,176 | $21,926,686 | $25,678,021 | +$3,751,335 | +17.11% | |
| Charles Schwab Investment Management Inc | 0.00% | 300,628 | $20,523,874 | $24,035,209 | +$3,511,335 | +17.11% | |
| Raymond James Financial Inc | 0.01% | 292,829 | $19,991,413 | $23,411,679 | +$3,420,266 | +17.11% | |
| T. Rowe Price Investment Management, Inc. | 0.01% | 250,380 | $17,094,000 | $20,017,881 | +$2,923,881 | +17.10% | |
| Ubs Group Ag | 0.00% | 249,796 | $17,053,573 | $19,971,190 | +$2,917,617 | +17.11% | |
| Aberdeen Group Plc | 0.02% | 229,503 | $15,668,170 | $18,348,765 | +$2,680,595 | +17.11% | |
| Vanguard Fiduciary Trust Co | 0.00% | 224,950 | $15,357,337 | $17,984,753 | +$2,627,416 | +17.11% | |
| Slow Capital, Inc. | 1.73% | 217,262 | $14,832,477 | $17,370,097 | +$2,537,620 | +17.11% | |
| Aqr Capital Management Llc | 0.00% | 211,341 | $14,159,852 | $16,896,713 | +$2,736,861 | +19.33% | |
| Wells Fargo & Company/Mn | 0.00% | 194,227 | $13,259,897 | $15,528,449 | +$2,268,552 | +17.11% | |
| Carnegie Investment Counsel | 0.22% | 217,100 | $11,219,728 | $17,357,145 | +$6,137,417 | +54.70% | |
| Douglas Lane & Associates, Llc | 0.15% | 162,340 | $11,082,952 | $12,979,083 | +$1,896,131 | +17.11% | |
| Susquehanna International Group, Llp | 0.01% | 155,295 | $10,601,990 | $12,415,835 | +$1,813,845 | +17.11% | |
| Bank Of New York Mellon Corp | 0.00% | 154,127 | $10,522,219 | $12,322,454 | +$1,800,235 | +17.11% | |
| Newtyn Management, Llc | 1.28% | 150,000 | $10,240,500 | $11,992,500 | +$1,752,000 | +17.11% | |
| 180 Wealth Advisors, Llc | 0.87% | 127,774 | $8,723,113 | $10,215,531 | +$1,492,418 | +17.11% | |
| Fmr Llc | 0.00% | 126,726 | $8,651,636 | $10,131,744 | +$1,480,108 | +17.11% | |
| Voleon Capital Management Lp | 0.15% | 121,062 | $8,264,903 | $9,678,907 | +$1,414,004 | +17.11% | |
| Jpmorgan Chase & Co | 0.00% | 114,806 | $7,972,838 | $9,178,740 | +$1,205,902 | +15.13% | |
| D. E. Shaw & Co., Inc. | 0.00% | 116,102 | $7,926,284 | $9,282,355 | +$1,356,071 | +17.11% | |
| Invesco Ltd. | 0.00% | 113,374 | $7,740,043 | $9,064,251 | +$1,324,208 | +17.11% | |
| Wim Investment Management Ltd | 2.38% | 106,400 | $7,263,928 | $8,506,680 | +$1,242,752 | +17.11% | |
| Alyeska Investment Group, L.P. | 0.02% | 105,000 | $7,168,350 | $8,394,750 | +$1,226,400 | +17.11% | |
| Legal & General Group Plc | 0.00% | 100,638 | $6,870,557 | $8,046,008 | +$1,175,451 | +17.11% | |
| American Century Companies Inc | 0.00% | 99,227 | $6,774,228 | $7,933,199 | +$1,158,971 | +17.11% | |
| Nuveen, Llc | 0.00% | 91,761 | $6,264,523 | $7,336,292 | +$1,071,769 | +17.11% | |
| Nomura Asset Management International Inc. | 0.01% | 85,089 | $5,809,000 | $6,802,866 | +$993,866 | +17.11% | |
| Swiss National Bank | 0.00% | 76,200 | $5,202,174 | $6,092,190 | +$890,016 | +17.11% | |
| Susquehanna Portfolio Strategies, Llc | 0.08% | 71,088 | $4,853,178 | $5,683,486 | +$830,308 | +17.11% | |
| Natixis | 0.02% | 70,226 | $4,794,329 | $5,614,569 | +$820,240 | +17.11% | |
| Barclays Plc | 0.00% | 69,989 | $4,778,149 | $5,595,621 | +$817,472 | +17.11% |
Frequently asked questions about GRAL
Who owns the most GRAL stock?
The largest holders of GRAL are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for GRAIL INC (GRAL).
Is GRAL widely held by superinvestors?
Many widely followed stocks like GRAL appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly GRAL is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.