Ideaya Biosciences Inc
$40.17+0.6%
+$412.6M
Net Activity
+10.06% total shares
Institutions Holding
285
Popularity Rank
#2227
Avg Weight
0.15%
Total Value
$3.9B
Market Cap
$3.6B
285 institutions currently hold IDYA, with 157 net buyers and 124 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
124
Net Buying Institutions
157
Top 5 by Value
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Across its top 20 institutional holders, IDYA's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 11/100, avg. turnover score 32/100).
IDYA ranks #2227 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
IDYA is a top-conviction position for GSK plc — at 8.3% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in IDYA belongs to FMR LLC, but the position matters far more to GSK plc, who has 8.3% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
California State Teachers Retirement System has added to its IDYA position for two straight quarters, increasing it by $91.3M to reach $93.9M today.
Federated Hermes, Inc. has trimmed its IDYA position for two straight quarters, cutting it by $64.0M while still holding $53.4M.
IDYA is up 0.6% today, and institutions have been net buyers of $412.6M this quarter — today's price move and the underlying institutional flow are pointing the same direction.
IDYA reported a net loss of $175.0M over the trailing twelve months.
+$674.4M
Total Buy Value
$393.0M
Total Sell Value
157
Net Buyers
124
Net Sellers
IDYA
Q2 2026
Top 5 Institutional Movers
+$319.7M
+$87.0M
+$55.2M
+$50.7M
IDYA does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
1
Filings (90d)
$382K
Total Est. Value
10K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| Andres Ruiz Briseno | 2026-07-07 | $382K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
No Schedule 13D/13G filings for this ticker
1
Filings (14d)
IDEAYA Biosciences (ticker: IDYA) reported its financial results for the second quarter ended June 30, 2026, on August 4, 2026, and attached the full press release as Exhibit 99.1 to this Form 8-K. The filing excerpt doesn't include any specific numbers—just the fact that results were announced—so the actual revenue, expenses, and cash position are in the press release itself.
View Full Filing (SEC EDGAR)45166A102
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,239
Total reported value
$2.2T
3224 13F institutions increased their position this quarter
Institutions Holding
5,987
Total reported value
$3.6T
3028 13F institutions increased their position this quarter
Institutions Holding
6,149
Total reported value
$1.8T
2966 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,580
Total reported value
$528.7B
Held by 4580 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,416
Total reported value
$354.5B
Held by 4416 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,320
Total reported value
$864.3B
Held by 4320 institutions — one of the most-tracked stocks on AlphaSMO
Access IDYA's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/IDYACLI
npx alphasmo stocks get IDYA