GENERAL AMERICAN INVESTORS CO INC
Position in IDYA — IDEAYA Biosciences, Inc.
CIK 40417
NEW YORK, NY
Position in IDYA
as of Jun 30, 2026
· filed Jul 31, 2026
Position Value
$11,488,104
+$2,149,808 QoQ
Shares Held
308,240
+10.0% QoQ
Ownership
0.319%
of shares outstanding
% of Portfolio
0.78%
of 13F equity value
Holder Rank
#45
of 282 holders
Holding Since
Sep 2024
8 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in IDYA Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026GENERAL AMERICAN INVESTORS CO INC holds $67,512,742 across 6 Biotechnology names. IDYA ranks #3 (17.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | REGN |
Regeneron Pharmaceuticals, Inc.
|
36,362 | $22,673,161 | |
| 2 | RVMD |
Revolution Medicines, Inc.
|
62,545 | $11,713,427 | |
| 3 | IDYA |
IDEAYA Biosciences, Inc.
This page
|
308,240 | $11,488,104 | |
| 4 | MRVI |
Maravai Lifesciences Holdings, Inc.
|
1,716,193 | $10,709,044 | |
| 5 | SPRY |
ARS Pharmaceuticals, Inc.
|
1,133,046 | $9,075,698 | |
| 6 | VALN |
Valneva SE
|
354,361 | $1,853,308 |
All Filings in IDYA
Export CSV
8 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $11,488,104 | 308,240 | Shares | Sole | 2026-07-31 | |
| 2026-03-31 | $9,338,296 | 280,261 | Shares | Sole | 2026-05-01 | |
| 2025-12-31 | $9,688,622 | 280,261 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $7,625,901 | 280,261 | Shares | Sole | 2025-10-31 | |
| 2025-06-30 | $5,470,686 | 260,261 | Shares | Sole | 2025-08-01 | |
| 2025-03-31 | $4,263,075 | 260,261 | Shares | Sole | 2025-05-02 | |
| 2024-12-31 | $3,090,707 | 120,261 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $2,851,200 | 90,000 | Shares | Sole | 2024-10-31 | |
| No filing history on record for this holder in this stock. | ||||||