IDEAYA Biosciences (IDYA)
IDEAYA Biosciences on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as pharmaceutical preparations.
9.1M
Short interest
settlement 2026-10-15
12.0
Days to cover
+3.6 days vs prior
70.7%
Short share of volume
2026-11-02
86,800
Fails to deliver
settlement 2026-10-01
Tue 3 Nov
Next earnings
estimated date
-$985K
Insider flow, 90 days
0 buys, 2 sells
As of 2026-11-02.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in IDYA is 9,079,434 shares, down 852,188 shares over the last month. Over the last 48 readings it ranged from 7,223,004 shares (15 December 2025) to 11,735,589 shares (15 July 2025). At the reported average volume of 755K shares a day that is 12.0 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 9,079,434 | -1.1% | 754,634 | 12.03 |
| 2026-09-30 | 9,183,217 | -7.5% | 1,088,895 | 8.43 |
| 2026-09-15 | 9,931,622 | -1.7% | 575,248 | 17.26 |
| 2026-08-31 | 10,103,757 | -2.8% | 827,360 | 12.21 |
| 2026-08-14 | 10,398,078 | +2.8% | 629,939 | 16.51 |
| 2026-07-31 | 10,113,206 | +5.6% | 766,531 | 13.19 |
| 2026-07-15 | 9,573,580 | -7.4% | 1,111,934 | 8.61 |
| 2026-06-30 | 10,334,969 | -2.8% | 1,701,073 | 6.08 |
| 2026-06-15 | 10,629,114 | -6.3% | 1,411,672 | 7.53 |
| 2026-05-29 | 11,338,312 | -3.1% | 693,874 | 16.34 |
| 2026-05-15 | 11,704,298 | -0.0% | 838,482 | 13.96 |
| 2026-04-30 | 11,705,770 | +10.8% | 1,046,757 | 11.18 |
| 2026-04-15 | 10,564,351 | +8.2% | 2,329,800 | 4.53 |
| 2026-03-31 | 9,761,427 | +0.4% | 1,043,838 | 9.35 |
| 2026-03-13 | 9,723,966 | -0.1% | 854,734 | 11.38 |
| 2026-02-27 | 9,732,265 | -2.6% | 768,278 | 12.67 |
| 2026-02-13 | 9,995,587 | +7.3% | 867,763 | 11.52 |
| 2026-01-30 | 9,316,949 | +7.0% | 803,680 | 11.59 |
| 2026-01-15 | 8,705,576 | +5.6% | 1,039,411 | 8.38 |
| 2025-12-31 | 8,247,135 | +14.2% | 871,295 | 9.47 |
| 2025-12-15 | 7,223,004 | -6.4% | 964,775 | 7.49 |
| 2025-11-28 | 7,717,025 | -3.9% | 844,033 | 9.14 |
| 2025-11-14 | 8,033,340 | +2.2% | 943,130 | 8.52 |
| 2025-10-31 | 7,859,556 | -7.3% | 1,375,884 | 5.71 |
| 2025-10-15 | 8,481,677 | +1.1% | 1,150,901 | 7.37 |
| 2025-09-30 | 8,393,673 | -11.3% | 1,287,969 | 6.52 |
| 2025-09-15 | 9,459,498 | -6.2% | 1,671,284 | 5.66 |
| 2025-08-29 | 10,088,795 | +4.6% | 766,620 | 13.16 |
| 2025-08-15 | 9,648,848 | -4.7% | 941,797 | 10.25 |
| 2025-07-31 | 10,120,270 | -13.8% | 1,124,095 | 9.00 |
| 2025-07-15 | 11,735,589 | +1.3% | 829,039 | 14.16 |
| 2025-06-30 | 11,584,970 | +2.1% | 1,141,972 | 10.14 |
| 2025-06-13 | 11,344,383 | +8.1% | 1,151,625 | 9.85 |
| 2025-05-30 | 10,496,238 | -1.8% | 1,566,297 | 6.70 |
| 2025-05-15 | 10,684,460 | -1.8% | 1,298,800 | 8.23 |
| 2025-04-30 | 10,880,195 | +1.9% | 1,453,998 | 7.48 |
| 2025-04-15 | 10,672,253 | +7.3% | 2,049,662 | 5.21 |
| 2025-03-31 | 9,945,435 | +0.6% | 938,442 | 10.60 |
| 2025-03-14 | 9,884,508 | +7.6% | 934,931 | 10.57 |
| 2025-02-28 | 9,188,885 | +3.3% | 904,590 | 10.16 |
| 2025-02-14 | 8,898,446 | -7.1% | 840,342 | 10.59 |
| 2025-01-31 | 9,582,473 | -0.9% | 937,246 | 10.22 |
| 2025-01-15 | 9,673,001 | -3.3% | 829,801 | 11.66 |
| 2024-12-31 | 9,999,282 | +10.2% | 969,421 | 10.31 |
| 2024-12-13 | 9,076,315 | +1.6% | 746,548 | 12.16 |
| 2024-11-29 | 8,934,689 | -11.2% | 1,401,222 | 6.38 |
| 2024-11-15 | 10,063,884 | +8.1% | 803,074 | 12.53 |
| 2024-10-31 | 9,306,160 | -3.1% | 669,928 | 13.89 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of IDYA volume is 70.7%, up 8.3 points over the last five sessions. Over the last 30 readings it ranged from 24.3% (15 October 2026) to 88.7% (6 October 2026). The latest reading is 6.1 points above the 30-session average of 64.6%, on 201K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 142K | 201K | 70.7% | 65 |
| 2026-10-30 | 193K | 285K | 67.6% | 53 |
| 2026-10-29 | 306K | 942K | 32.5% | 224 |
| 2026-10-28 | 379K | 577K | 65.6% | 1,500 |
| 2026-10-27 | 168K | 329K | 51.0% | 0 |
| 2026-10-26 | 289K | 463K | 62.4% | 0 |
| 2026-10-23 | 257K | 469K | 54.7% | 0 |
| 2026-10-22 | 135K | 197K | 68.5% | 0 |
| 2026-10-21 | 165K | 227K | 72.9% | 0 |
| 2026-10-20 | 153K | 382K | 40.0% | 0 |
| 2026-10-19 | 196K | 262K | 74.5% | 0 |
| 2026-10-16 | 149K | 236K | 63.1% | 0 |
| 2026-10-15 | 145K | 595K | 24.3% | 0 |
| 2026-10-14 | 129K | 433K | 29.6% | 0 |
| 2026-10-13 | 131K | 348K | 37.6% | 0 |
| 2026-10-12 | 118K | 151K | 78.5% | 0 |
| 2026-10-09 | 260K | 313K | 83.0% | 0 |
| 2026-10-08 | 162K | 217K | 74.5% | 0 |
| 2026-10-07 | 170K | 208K | 81.5% | 0 |
| 2026-10-06 | 329K | 371K | 88.7% | 12,700 |
| 2026-10-05 | 223K | 257K | 86.7% | 0 |
| 2026-10-02 | 189K | 226K | 83.4% | 0 |
| 2026-10-01 | 151K | 204K | 74.2% | 0 |
| 2026-09-30 | 231K | 272K | 84.9% | 1,462 |
| 2026-09-29 | 231K | 341K | 67.8% | 9,361 |
| 2026-09-28 | 317K | 421K | 75.4% | 0 |
| 2026-09-25 | 116K | 150K | 77.6% | 0 |
| 2026-09-24 | 246K | 571K | 43.1% | 0 |
| 2026-09-23 | 323K | 589K | 54.8% | 300 |
| 2026-09-22 | 150K | 221K | 67.8% | 12,553 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 1 October 2026, the fails-to-deliver balance in IDYA is 86,800 shares, up 85,380 shares over the last settlement date. Over the last 30 readings it ranged from 3 shares (2 July 2026) to 100,732 shares (30 June 2026).
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-01 | 86,800 | $38.42 | $3.3M |
| 2026-09-30 | 1,420 | $37.86 | $54K |
| 2026-09-28 | 14,252 | $36.69 | $523K |
| 2026-09-02 | 19 | $39.95 | $759 |
| 2026-08-28 | 1,912 | $41.77 | $80K |
| 2026-08-26 | 7,182 | $42.48 | $305K |
| 2026-08-14 | 3 | $36.68 | $110 |
| 2026-08-13 | 3 | $36.96 | $111 |
| 2026-08-11 | 1,136 | $36.74 | $42K |
| 2026-07-30 | 6 | $35.59 | $214 |
| 2026-07-23 | 1,266 | $35.00 | $44K |
| 2026-07-17 | 3,615 | $35.93 | $130K |
| 2026-07-16 | 44 | $36.74 | $2K |
| 2026-07-02 | 3 | $36.17 | $109 |
| 2026-06-30 | 100,732 | $36.55 | $3.7M |
| 2026-06-29 | 15,073 | $36.74 | $554K |
| 2026-06-26 | 40,520 | $36.29 | $1.5M |
| 2026-06-25 | 4,912 | $36.28 | $178K |
| 2026-06-24 | 1,786 | $34.91 | $62K |
| 2026-06-23 | 105 | $34.23 | $4K |
| 2026-06-18 | 67 | $31.26 | $2K |
| 2026-06-12 | 24,425 | $28.84 | $704K |
| 2026-06-11 | 87 | $27.60 | $2K |
| 2026-05-28 | 118 | $29.28 | $3K |
| 2026-05-27 | 193 | $29.35 | $6K |
| 2026-05-22 | 49,404 | $29.54 | $1.5M |
| 2026-05-21 | 22,594 | $29.65 | $670K |
| 2026-05-11 | 6 | $28.32 | $170 |
| 2026-05-07 | 702 | $28.74 | $20K |
| 2026-05-04 | 97 | $28.19 | $3K |
Insider trades
SEC Form 4, newest first. JSONInsiders at IDYA reported 2 open-market sells worth $985K in the last 90 days and no open-market buys. Latest filing: Hata Yujiro S (President and CEO) on 2026-10-06.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-06 | Hata Yujiro S | President and CEO | Sell | 800 | $38.26 | $31K | 691K |
| 2026-10-06 | Hata Yujiro S | President and CEO | Sell | 26K | $37.39 | $955K | 691K |
| 2026-10-06 | Hata Yujiro S | President and CEO | Exercise or conversion | 26K | $4.31 | $114K | 717K |
| 2026-07-07 | Ruiz Briseno Andres | Chief Accounting Officer | Sell | 10K | $40.01 | $382K | 26K |
| 2026-07-07 | Ruiz Briseno Andres | Chief Accounting Officer | Exercise or conversion | 10K | $12.86 | $123K | 36K |
| 2026-03-02 | Stein Jeffrey | Director | Buy | 50K | $32.96 | $1.6M | 54K |
| 2025-11-28 | Snyder Douglas B. | SVP, General Counsel | Grant | 1K | $16.91 | $18K | 2K |
| 2025-11-28 | Ruiz Briseno Andres | See Remarks | Grant | 1K | $16.91 | $21K | 26K |
| 2025-05-30 | Snyder Douglas B. | SVP, General Counsel | Grant | 1K | $16.91 | $18K | 1K |
| 2025-02-18 | Hata Yujiro S | President and CEO | Exercise or conversion | 13K | $19.52 | $250K | 691K |
| 2024-11-29 | Ruiz Briseno Andres | See Remarks | Grant | 682 | $23.26 | $16K | 25K |
| 2024-06-27 | Throne Jason | Chief Legal Officer | Exercise or conversion | 6K | $13.34 | $86K | 16K |
| 2024-06-27 | Throne Jason | Chief Legal Officer | Exercise or conversion | 47K | $7.01 | $330K | 63K |
| 2024-05-29 | WHITE MICHAEL ANTHONY | Chief Scientific Officer | Sell | 851 | $36.78 | $31K | 0 |
| 2024-05-29 | WHITE MICHAEL ANTHONY | Chief Scientific Officer | Exercise or conversion | 29K | $12.86 | $367K | 29K |
| 2024-05-29 | WHITE MICHAEL ANTHONY | Chief Scientific Officer | Sell | 28K | $36.23 | $1.0M | 851 |
| 2024-05-16 | Hata Yujiro S | President and CEO | Sell | 30K | $41.73 | $1.3M | 682K |
| 2024-05-16 | Hata Yujiro S | President and CEO | Exercise or conversion | 34K | $4.31 | $148K | 712K |
| 2024-05-16 | Hata Yujiro S | President and CEO | Sell | 4K | $42.37 | $184K | 678K |
| 2024-05-15 | Hata Yujiro S | President and CEO | Exercise or conversion | 84K | $4.31 | $361K | 762K |
| 2024-05-15 | Hata Yujiro S | President and CEO | Sell | 503 | $44.12 | $22K | 678K |
| 2024-05-15 | Hata Yujiro S | President and CEO | Sell | 30K | $43.48 | $1.3M | 678K |
| 2024-05-15 | Hata Yujiro S | President and CEO | Sell | 54K | $42.57 | $2.3M | 708K |
| 2024-05-14 | Hata Yujiro S | President and CEO | Sell | 2K | $41.84 | $96K | 678K |
| 2024-05-14 | Hata Yujiro S | President and CEO | Sell | 54K | $41.60 | $2.3M | 680K |
| 2024-05-14 | Hata Yujiro S | President and CEO | Exercise or conversion | 57K | $4.31 | $244K | 735K |
| 2024-02-09 | Hata Yujiro S | President and CEO | Sell | 24K | $45.54 | $1.1M | 678K |
| 2024-02-09 | Hata Yujiro S | President and CEO | Exercise or conversion | 24K | $4.31 | $102K | 701K |
| 2024-02-09 | Ruiz Briseno Andres | See Remarks | Sell | 2K | $46.02 | $92K | 25K |
| 2024-02-08 | Hata Yujiro S | President and CEO | Sell | 76K | $45.15 | $3.4M | 678K |
| 2024-02-08 | Hata Yujiro S | President and CEO | Exercise or conversion | 76K | $4.31 | $327K | 754K |
| 2024-02-01 | Hata Yujiro S | President and CEO | Sell | 624 | $45.00 | $28K | 678K |
| 2024-02-01 | Hata Yujiro S | President and CEO | Sell | 4 | $45.01 | $180 | 678K |
| 2024-02-01 | Hata Yujiro S | President and CEO | Exercise or conversion | 628 | $4.31 | $3K | 679K |
| 2024-01-22 | Ruiz Briseno Andres | See Remarks | Sell | 2K | $42.03 | $84K | 27K |
| 2024-01-16 | Hata Yujiro S | President and CEO | Sell | 63K | $40.17 | $2.5M | 678K |
| 2024-01-16 | Hata Yujiro S | President and CEO | Exercise or conversion | 63K | $4.31 | $270K | 741K |
| 2024-01-12 | Hata Yujiro S | President and CEO | Exercise or conversion | 12K | $4.31 | $53K | 690K |
| 2024-01-12 | Hata Yujiro S | President and CEO | Sell | 12K | $40.04 | $491K | 678K |
| 2024-01-12 | Ruiz Briseno Andres | See Remarks | Sell | 2K | $38.01 | $76K | 29K |
| 2023-12-18 | Throne Jason | Chief Legal Officer | Exercise or conversion | 10K | $7.01 | $70K | 10K |
| 2023-12-15 | Hata Yujiro S | President and CEO | Sell | 75K | $35.03 | $2.6M | 678K |
| 2023-12-15 | Hata Yujiro S | President and CEO | Exercise or conversion | 75K | $4.31 | $323K | 753K |
| 2023-12-15 | Throne Jason | Chief Legal Officer | Exercise or conversion | 10K | $13.34 | $133K | 10K |
| 2023-12-15 | Throne Jason | Chief Legal Officer | Sell | 10K | $35.04 | $350K | 0 |
| 2023-12-14 | Ruiz Briseno Andres | See Remarks | Sell | 2K | $34.00 | $57K | 31K |
| 2023-12-14 | Ruiz Briseno Andres | See Remarks | Sell | 328 | $34.01 | $11K | 31K |
| 2023-11-03 | Throne Jason | Chief Legal Officer | Sell | 5K | $30.09 | $155K | 0 |
| 2023-11-03 | Throne Jason | Chief Legal Officer | Exercise or conversion | 5K | $12.86 | $66K | 5K |
| 2023-09-12 | Throne Jason | Chief Legal Officer | Sell | 500 | $30.00 | $15K | 500 |
| 2023-09-12 | Throne Jason | Chief Legal Officer | Sell | 500 | $30.01 | $15K | 0 |
| 2023-09-12 | Throne Jason | Chief Legal Officer | Exercise or conversion | 1K | $12.86 | $13K | 1K |
| 2023-09-05 | Throne Jason | Chief Legal Officer | Exercise or conversion | 2K | $12.86 | $22K | 2K |
| 2023-09-05 | Throne Jason | Chief Legal Officer | Sell | 2K | $30.03 | $52K | 0 |
| 2023-09-01 | Ruiz Briseno Andres | See Remarks | Sell | 2K | $30.01 | $60K | 33K |
| 2023-09-01 | Throne Jason | Chief Legal Officer | Exercise or conversion | 2K | $12.86 | $27K | 2K |
| 2023-09-01 | Throne Jason | Chief Legal Officer | Sell | 2K | $30.03 | $63K | 0 |
| 2023-08-29 | Stone Paul A. | Chief Financial Officer | Sell | 5K | $28.87 | $144K | 9K |
| 2023-08-21 | Stone Paul A. | Chief Financial Officer | Sell | 978 | $26.40 | $26K | 14K |
| 2023-08-18 | Stone Paul A. | Chief Financial Officer | Sell | 4K | $26.38 | $101K | 15K |
| 2023-08-16 | Stone Paul A. | Chief Financial Officer | Sell | 100 | $26.40 | $3K | 19K |
| 2023-08-16 | Stone Paul A. | Chief Financial Officer | Sell | 100 | $26.45 | $3K | 19K |
| 2023-08-09 | Stone Paul A. | Chief Financial Officer | Sell | 3K | $25.05 | $63K | 19K |
| 2023-08-09 | Throne Jason | Chief Legal Officer | Exercise or conversion | 5K | $13.34 | $67K | 5K |
| 2023-08-09 | Throne Jason | Chief Legal Officer | Sell | 5K | $25.09 | $125K | 0 |
| 2023-07-10 | Throne Jason | Chief Legal Officer | Sell | 9K | $23.00 | $218K | 0 |
| 2023-07-10 | Throne Jason | Chief Legal Officer | Exercise or conversion | 4K | $7.01 | $31K | 4K |
| 2023-07-10 | Throne Jason | Chief Legal Officer | Exercise or conversion | 5K | $12.86 | $64K | 9K |
| 2023-06-01 | Throne Jason | Chief Legal Officer | Sell | 4K | $23.02 | $82K | 0 |
| 2023-06-01 | Throne Jason | Chief Legal Officer | Exercise or conversion | 4K | $7.01 | $25K | 4K |
| 2023-05-31 | Throne Jason | Chief Legal Officer | Sell | 432 | $23.00 | $10K | 0 |
| 2023-05-31 | Throne Jason | Chief Legal Officer | Exercise or conversion | 432 | $7.01 | $3K | 432 |
| 2023-05-22 | Throne Jason | Chief Legal Officer | Exercise or conversion | 500 | $7.01 | $4K | 500 |
| 2023-05-22 | Throne Jason | Chief Legal Officer | Sell | 500 | $23.00 | $12K | 0 |
| 2023-04-13 | Stone Paul A. | Chief Financial Officer | Exercise or conversion | 8K | $4.62 | $37K | 22K |
| 2023-04-12 | Hata Yujiro S | President and CEO | Exercise or conversion | 12K | $4.31 | $50K | 678K |
| 2021-10-04 | Dillon Michael P. | SVP, Chief Scientific Officer | Exercise or conversion | 2K | $11.08 | $17K | 80K |
| 2021-10-04 | Dillon Michael P. | SVP, Chief Scientific Officer | Sell | 1K | $26.62 | $27K | 79K |
| 2021-10-04 | Dillon Michael P. | SVP, Chief Scientific Officer | Sell | 500 | $25.85 | $13K | 80K |
| 2021-09-08 | Dillon Michael P. | SVP, Chief Scientific Officer | Exercise or conversion | 7K | $4.31 | $30K | 86K |
| 2021-09-08 | Dillon Michael P. | SVP, Chief Scientific Officer | Sell | 11K | $27.41 | $307K | 79K |
| 2021-09-08 | Dillon Michael P. | SVP, Chief Scientific Officer | Exercise or conversion | 4K | $11.08 | $48K | 90K |
| 2021-09-08 | Dillon Michael P. | SVP, Chief Scientific Officer | Sell | 200 | $27.67 | $6K | 79K |
| 2021-09-07 | Stone Paul A. | SVP, Chief Financial Officer | Sell | 3K | $27.42 | $69K | 13K |
| 2021-09-07 | Dillon Michael P. | SVP, Chief Scientific Officer | Sell | 116 | $27.46 | $3K | 79K |
| 2021-09-07 | Dillon Michael P. | SVP, Chief Scientific Officer | Exercise or conversion | 116 | $4.31 | $500 | 79K |
| 2021-09-02 | Dillon Michael P. | SVP, Chief Scientific Officer | Sell | 10K | $25.09 | $251K | 79K |
| 2021-08-09 | Dillon Michael P. | SVP, Chief Scientific Officer | Sell | 11K | $22.96 | $255K | 89K |
| 2021-08-09 | Dillon Michael P. | SVP, Chief Scientific Officer | Sell | 400 | $23.52 | $9K | 89K |
| 2021-08-09 | Dillon Michael P. | SVP, Chief Scientific Officer | Exercise or conversion | 2K | $4.31 | $6K | 100K |
| 2021-07-27 | Dillon Michael P. | SVP, Chief Scientific Officer | Exercise or conversion | 5K | $4.31 | $22K | 109K |
| 2021-07-27 | Throne Jason | SVP, General Counsel | Sell | 10K | $25.17 | $252K | 0 |
| 2021-07-27 | Throne Jason | SVP, General Counsel | Exercise or conversion | 10K | $13.34 | $133K | 10K |
| 2021-07-27 | Dillon Michael P. | SVP, Chief Scientific Officer | Sell | 10K | $25.15 | $252K | 99K |
| 2021-07-27 | Dillon Michael P. | SVP, Chief Scientific Officer | Exercise or conversion | 5K | $6.92 | $35K | 104K |
| 2021-07-06 | Throne Jason | SVP, General Counsel | Sell | 6K | $22.16 | $143K | 4K |
| 2021-07-06 | Throne Jason | SVP, General Counsel | Sell | 2K | $22.16 | $45K | 359 |
| 2021-07-06 | Throne Jason | SVP, General Counsel | Sell | 1K | $22.68 | $26K | 2K |
| 2021-07-06 | Throne Jason | SVP, General Counsel | Sell | 359 | $22.68 | $8K | 0 |
| 2021-07-06 | Throne Jason | SVP, General Counsel | Exercise or conversion | 2K | $13.34 | $32K | 10K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON7 holders report 5% or more of IDYA in their latest filing, all on Schedule 13G (passive). The largest reported stake is JANUS HENDERSON GROUP PLC at 8.3% of the class (7,265,253 shares), filed 2026-05-15 for an event on 2026-03-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-14 | 13G | Baker Bros. Advisors LPinvestment adviser, partnership | 5.0M | 5.2% | 2026-06-30 |
| 2026-08-14 | 13G | Baker Bros. Advisors (GP) LLCparent holding company, other entity | 5.0M | 5.2% | 2026-06-30 |
| 2026-08-14 | 13G | Julian C. Bakerparent holding company, individual | 5.0M | 5.2% | 2026-06-30 |
| 2026-08-14 | 13G | Felix J. Bakerparent holding company, individual | 5.0M | 5.2% | 2026-06-30 |
| 2026-07-31 | 13G | Vanguard Capital Managementinvestment adviser | 4.8M | 5.1% | 2026-06-30 |
| 2026-05-15 | 13G/Ano. 6 | JANUS HENDERSON GROUP PLCparent holding company | 7.3M | 8.3% | 2026-03-31 |
| 2026-03-27 | 13G/Ano. 1 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-02-17 | 13G/Ano. 1 | Point72 Asset Management, L.P.partnership | 1.8M | 2.1% | 2025-12-31 |
| 2026-02-17 | 13G/Ano. 1 | Point72 Capital Advisors, Inc.corporation | 1.8M | 2.1% | 2025-12-31 |
| 2026-02-17 | 13G/Ano. 1 | Steven A. Cohenindividual | 1.8M | 2.1% | 2025-12-31 |
| 2026-02-12 | 13G/Ano. 1 | Capital Research Global Investorsinvestment adviser | 5.3M | 6.0% | 2025-12-31 |
| 2026-01-08 | 13G/Ano. 3 | Federated Hermes, Inc.parent holding company | 3.4M | 3.9% | 2025-12-31 |
| 2026-01-08 | 13G/Ano. 3 | Voting Shares Irrevocable Trustother entity | 3.4M | 3.9% | 2025-12-31 |
| 2026-01-08 | 13G/Ano. 3 | Thomas R. Donahueindividual | 3.4M | 3.9% | 2025-12-31 |
| 2026-01-08 | 13G/Ano. 3 | Ann C. Donahueindividual | 3.4M | 3.9% | 2025-12-31 |
| 2026-01-08 | 13G/Ano. 3 | J. Christopher Donahueindividual | 3.4M | 3.9% | 2025-12-31 |
13F holders
Tracked managers holding IDYA at their latest 13F. JSON6 of the 30 tracked managers held IDYA at their latest 13F, $48.2M in total at quarter-end prices. Fisher Asset Management is the largest at $31.7M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 4 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Fisher Asset Management | 2026-06-30 | 851K | $31.7M | 0.01% | -31K |
| Citadel Advisors | 2026-06-30 | 300K | $11.2M | 0.00% | -379K |
| AQR Capital Management | 2026-06-30 | 68K | $2.5M | 0.00% | +26K |
| Two Sigma Investments | 2026-06-30 | 41K | $1.5M | 0.00% | -78K |
| D. E. Shaw & Co. | 2026-06-30 | 21K | $774K | 0.00% | new |
| Millennium Management | 2026-06-30 | 11K | $391K | 0.00% | -218K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
IDEAYA Biosciences in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows IDEAYA Biosciences (IDYA), SEC CIK 1676725, listed on Nasdaq, classified by the SEC as pharmaceutical preparations. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-01.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-14.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-04.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-06.JSON and CSV
- Company record
- EDGAR filing index for CIK 1676725Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of IDYA is sold short?
9,079,434 shares were held short at the 2026-10-15 settlement, 12.0 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is IDYA's daily short volume?
On 2026-11-02, 141,841 of the 200,714 IDYA shares reported to FINRA were sold short, 70.7% of the day's reported volume. Short volume is a flow for one day, not a position.
Does IDYA have fails to deliver?
The SEC's latest file shows 86,800 IDYA shares failed to deliver at settlement 2026-10-01. Fails are reported per settlement date and published twice a month with a lag.
Are IDYA insiders buying or selling?
Insiders at IDYA reported 2 open-market sells worth $985K in the last 90 days and no open-market buys. Latest filing: Hata Yujiro S (President and CEO) on 2026-10-06.
Who owns 5% or more of IDYA?
7 holders report 5% or more of IDYA in their latest filing, all on Schedule 13G (passive). The largest reported stake is JANUS HENDERSON GROUP PLC at 8.3% of the class (7,265,253 shares), filed 2026-05-15 for an event on 2026-03-31.
Which tracked 13F managers own IDYA?
6 of the 30 tracked 13F managers held IDYA shares at their latest filing, $48.2M in all. The largest: Ken Fisher's Fisher Asset Management (851K shares, $31.7M), Ken Griffin's Citadel Advisors (300K shares, $11.2M), Cliff Asness's AQR Capital Management (68K shares, $2.5M), Two Sigma Investments (41K shares, $1.5M), D. E. Shaw & Co. (21K shares, $774K), Izzy Englander's Millennium Management (11K shares, $391K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.