GRAL Institutional Ownership & Shareholders
GRAIL INC (GRAL) is currently held by 388 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $2.40B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
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 $538.87M, representing an estimated gain of +95.93% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 60% 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
388
Total Reported Value
$2.40B
Largest Holder
Baker Bros. Advisors Lp
Largest Position
$275.03M
Insider Transactions (90d)
25
Latest Filing Quarter
Q2 2026
New Institutional Positions
62
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 | $538,867,409 | +$263,833,931 | +95.93% | |
| Blackrock, Inc. | 0.00% | 3,577,075 | $244,206,968 | $478,469,552 | +$234,262,584 | +95.93% | |
| State Street Corp | 0.00% | 2,385,514 | $162,859,041 | $319,086,353 | +$156,227,312 | +95.93% | |
| Primecap Management Co/Ca/ | 0.09% | 2,180,106 | $148,835,838 | $291,610,979 | +$142,775,141 | +95.93% | |
| Sessa Capital Im, L.P. | 2.41% | 2,037,518 | $139,101,354 | $272,538,408 | +$133,437,054 | +95.93% | |
| Deep Track Capital, Lp | 1.85% | 1,834,944 | $125,271,627 | $245,442,109 | +$120,170,482 | +95.93% | |
| Vanguard Capital Management Llc | 0.00% | 1,641,117 | $112,039,058 | $219,515,810 | +$107,476,752 | +95.93% | |
| Morgan Stanley | 0.01% | 1,462,163 | $99,821,986 | $195,578,923 | +$95,756,937 | +95.93% | |
| Arbiter Partners Capital Management | Paul Isaac | 37.73% | 1,034,297 | $70,611,456 | $138,347,567 | +$67,736,111 | +95.93% |
| Geode Capital Management, Llc | 0.00% | 991,380 | $67,690,664 | $132,606,989 | +$64,916,325 | +95.90% | |
| Goldman Sachs Group Inc | 0.01% | 748,015 | $51,066,984 | $100,054,486 | +$48,987,502 | +95.93% | |
| Jefferies Financial Group Inc. | 0.45% | 724,000 | $49,427,480 | $96,842,240 | +$47,414,760 | +95.93% | |
| Bank Of America Corp | 0.00% | 723,437 | $49,389,043 | $96,766,933 | +$47,377,890 | +95.93% | |
| Dimensional Fund Advisors Lp | 0.01% | 679,587 | $46,395,822 | $90,901,557 | +$44,505,735 | +95.93% | |
| Casdin Capital, Llc | 1.64% | 480,000 | $32,769,600 | $64,204,800 | +$31,435,200 | +95.93% | |
| Vanguard Portfolio Management Llc | 0.00% | 477,982 | $32,631,831 | $63,934,872 | +$31,303,041 | +95.93% | |
| Slow Capital, Inc. | 3.44% | 218,363 | $30,597,024 | $29,208,235 | -$1,388,789 | -4.54% | |
| Northern Trust Corp | 0.00% | 372,588 | $25,436,582 | $49,837,371 | +$24,400,789 | +95.93% | |
| Citigroup Inc | 0.01% | 371,253 | $25,345,470 | $49,658,801 | +$24,313,331 | +95.93% | |
| Kingdon Capital Management, L.L.C. | 3.13% | 340,000 | $23,211,800 | $45,478,400 | +$22,266,600 | +95.93% | |
| Douglas Lane & Associates, Llc | 0.30% | 161,580 | $22,640,590 | $21,612,941 | -$1,027,649 | -4.54% | |
| Granahan Investment Management, Llc | 0.78% | 321,176 | $21,926,686 | $42,960,502 | +$21,033,816 | +95.93% | |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 0.62% | 155,762 | $21,825,359 | $20,834,725 | -$990,634 | -4.54% | |
| Charles Schwab Investment Management Inc | 0.00% | 300,628 | $20,523,874 | $40,212,001 | +$19,688,127 | +95.93% | |
| Raymond James Financial Inc | 0.01% | 292,829 | $19,991,413 | $39,168,807 | +$19,177,394 | +95.93% | |
| 180 Wealth Advisors, Llc | 1.65% | 122,339 | $17,142,104 | $16,364,065 | -$778,039 | -4.54% | |
| T. Rowe Price Investment Management, Inc. | 0.01% | 250,380 | $17,094,000 | $33,490,829 | +$16,396,829 | +95.92% | |
| Ubs Group Ag | 0.00% | 249,796 | $17,053,573 | $33,412,713 | +$16,359,140 | +95.93% | |
| Aberdeen Group Plc | 0.02% | 229,503 | $15,668,170 | $30,698,321 | +$15,030,151 | +95.93% | |
| Vanguard Fiduciary Trust Co | 0.00% | 224,950 | $15,357,337 | $30,089,312 | +$14,731,975 | +95.93% | |
| Aqr Capital Management Llc | 0.00% | 211,341 | $14,159,852 | $28,268,972 | +$14,109,120 | +99.64% | |
| Wells Fargo & Company/Mn | 0.00% | 194,227 | $13,259,897 | $25,979,804 | +$12,719,907 | +95.93% | |
| Principal Financial Group Inc | 0.01% | 84,695 | $11,867,463 | $11,328,803 | -$538,660 | -4.54% | |
| Susquehanna International Group, Llp | 0.01% | 155,295 | $10,601,990 | $20,772,259 | +$10,170,269 | +95.93% | |
| Bank Of New York Mellon Corp | 0.00% | 154,127 | $10,522,219 | $20,616,028 | +$10,093,809 | +95.93% | |
| Newtyn Management, Llc | 1.28% | 150,000 | $10,240,500 | $20,064,000 | +$9,823,500 | +95.93% | |
| Reynders Mcveigh Capital Management, Llc | 0.39% | 63,696 | $8,925,084 | $8,519,977 | -$405,107 | -4.54% | |
| Fmr Llc | 0.00% | 126,726 | $8,651,636 | $16,950,870 | +$8,299,234 | +95.93% | |
| Creative Planning | 0.00% | 61,428 | $8,607,229 | $8,216,609 | -$390,620 | -4.54% | |
| Voleon Capital Management Lp | 0.15% | 121,062 | $8,264,903 | $16,193,253 | +$7,928,350 | +95.93% | |
| Jpmorgan Chase & Co | 0.00% | 114,806 | $7,972,838 | $15,356,451 | +$7,383,613 | +92.61% | |
| D. E. Shaw & Co., Inc. | 0.00% | 116,102 | $7,926,284 | $15,529,804 | +$7,603,520 | +95.93% | |
| Invesco Ltd. | 0.00% | 113,374 | $7,740,043 | $15,164,906 | +$7,424,863 | +95.93% | |
| Wim Investment Management Ltd | 2.38% | 106,400 | $7,263,928 | $14,232,064 | +$6,968,136 | +95.93% | |
| Alyeska Investment Group, L.P. | 0.02% | 105,000 | $7,168,350 | $14,044,800 | +$6,876,450 | +95.93% | |
| Legal & General Group Plc | 0.00% | 100,638 | $6,870,557 | $13,461,339 | +$6,590,782 | +95.93% | |
| Legal Advantage Investments, Inc. | 1.46% | 48,625 | $6,813,335 | $6,504,080 | -$309,255 | -4.54% | |
| American Century Companies Inc | 0.00% | 99,227 | $6,774,228 | $13,272,604 | +$6,498,376 | +95.93% | |
| Nuveen, Llc | 0.00% | 91,761 | $6,264,523 | $12,273,951 | +$6,009,428 | +95.93% | |
| Simplify Asset Management Inc. | 0.10% | 42,969 | $6,020,816 | $5,747,533 | -$273,283 | -4.54% |
Frequently asked questions about GRAL
Who are the largest institutional holders of GRAL?
The largest institutional holders of GRAL reported in the latest SEC Form 13F filings include Baker Bros. Advisors Lp, Blackrock, Inc., State Street Corp, Primecap Management Co/Ca/, and Sessa Capital Im, L.P.. InsiderSet ranks institutional holders by their latest reported GRAL position.
What is GRAL institutional ownership?
This page tracks GRAL positions reported by institutional investment managers through SEC Form 13F. GRAIL INC (GRAL) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own GRAL?
InsiderSet currently tracks 388 institutional managers reporting GRAL holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of GRAL shareholders.
How much GRAL stock do institutions own?
Institutional investment managers disclosed approximately $2.40B in GRAL holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was GRAL institutional ownership last updated?
The latest GRAL institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional GRAL holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its GRAL position after the reporting date.
Are institutions buying or selling GRAL?
Institutional buying and selling can be analyzed by comparing GRAL positions across consecutive 13F reporting periods. InsiderSet's GRAL Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View GRAL ownership changes.
How has GRAL institutional ownership changed over time?
InsiderSet tracks GRAL institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.