13F reference period
Q2 2026
CUSIP: 687604108
13F reference period
Q2 2026
Institutions Reporting
255
Shares (Excl. Options)
Price
$95.17
The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.
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Latest holder context comes from 255 institutions filings for Q2 2026.
Security key
687604108
13F reference period
Q2 2026
13F holders
255
13D/G owners
7
CIK / CUSIP context first
Broader feeds
Open recent reporting periods for CUSIP 687604108:
13D/G owners
Large-stake holder rows connected to Schedule 13D/G evidence.
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Fairmount Funds Management LLC | 20% | -2.4% | $997,807,627 | +$62,159,599 | 14,572,917 | +6.6% | Harwin Peter Evan | 01 Jul 2026 |
| Venrock Healthcare Capital Partners III, L.P. | 7.4% | -25% | $384,606,749 | -$29,765,095 | 4,556,952 | -7.2% | Venrock Healthcare Capital Partners III, L.P. | 30 Jun 2026 |
| Capital World Investors | 5.6% | $287,098,332 | 3,401,639 | Capital World Investors | 30 Jun 2026 | |||
| BlackRock, Inc. | 6.6% | +42% | $96,248,890 | +$29,642,149 | 3,175,483 | +45% | BlackRock, Inc. | 31 Dec 2025 |
| RTW INVESTMENTS, LP | 5.2% | +22% | $264,934,132 | +$91,226,441 | 3,139,030 | +53% | RTW Investments, LP | 30 Jun 2026 |
| Deep Track Capital, LP | 4.5% | -12% | $65,515,368 | +$8,023,966 | 2,161,510 | +14% | Deep Track Capital, LP | 31 Dec 2025 |
| VIKING GLOBAL INVESTORS LP | 2.5% | -56% | $126,893,543 | -$98,175,093 | 1,503,478 | -44% | VIKING GLOBAL INVESTORS LP | 30 Jun 2026 |
13F concentration
Largest 13F positions for this security by reported shares and value.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| FMR LLC | 15% | 9,057,645 | +22% | 0.04% | $862,016,075 |
| BlackRock, Inc. | 8.1% | 4,990,181 | +41% | 0.01% | $474,915,526 |
| Venrock Adviser, LLC | 6.7% | 4,148,428 | 0% | 12% | $394,805,893 |
| Fairmount Funds Management LLC | 6% | 3,705,262 | 0% | 23% | $352,629,785 |
| Capital World Investors | 5.5% | 3,401,639 | 0.04% | $323,733,984 | |
| RTW INVESTMENTS, LP | 5.1% | 3,139,030 | +53% | 2.6% | $298,741,485 |
| STATE STREET CORP | 4.3% | 2,673,090 | +66% | 0.01% | $254,384,117 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.8% | 2,360,971 | +27% | 0% | $224,693,610 |
| Paradigm Biocapital Advisors LP | 3.5% | 2,144,526 | -7.6% | 3.8% | $204,094,539 |
| Deep Track Capital, LP | 3.1% | 1,926,000 | -5.3% | 2.7% | $183,297,420 |
| Bellevue Group AG | 2.7% | 1,657,190 | +227% | 3.3% | $157,714,772 |
| FRANKLIN RESOURCES INC | 2.6% | 1,621,451 | +61% | 0.03% | $154,313,446 |
| Remedium Capital Partners, LLC | 2.5% | 1,565,661 | 0% | 33% | $149,003,957 |
| RA CAPITAL MANAGEMENT, L.P. | 2.5% | 1,554,597 | 1.3% | $147,950,996 | |
| VIKING GLOBAL INVESTORS LP | 2.4% | 1,503,478 | -44% | 0.41% | $143,086,001 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.3% | 1,429,954 | +50% | 0.01% | $136,113,846 |
| Jupiter Topco LLC | 2.2% | 1,375,844 | 0% | 0.05% | $130,968,336 |
| PERCEPTIVE ADVISORS LLC | 2.2% | 1,345,063 | -3.6% | 2% | $128,009,646 |
| Polar Capital Holdings Plc | 2% | 1,228,609 | +17% | 0.33% | $116,926,719 |
| CITADEL ADVISORS LLC | 1.8% | 1,119,011 | +11% | 0.06% | $106,496,277 |
| T. Rowe Price Investment Management, Inc. | 1.8% | 1,103,743 | 0.07% | $105,044,000 | |
| BNP PARIBAS FINANCIAL MARKETS | 1.8% | 1,079,015 | 0% | 0.05% | $102,689,858 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.4% | 838,603 | +15% | 0.01% | $79,811,000 |
| Avidity Partners Management LP | 1.2% | 760,424 | 0% | 12% | $72,369,552 |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 1.1% | 658,301 | 1.6% | $62,650,506 |
Quarter history
Holder count, reported shares/value, and median price by quarter.
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q3 | 250,002 | $20,808,780 | -$3,010,096 | $83.29 | 33 |
| 2026 Q2 | 74,139,131 | $7,051,100,780 | +$1,979,836,886 | $95.17 | 255 |
| 2026 Q1 | 52,018,172 | $2,550,553,925 | +$46,411,060 | $49.05 | 183 |
| 2025 Q4 | 52,853,967 | $1,602,044,506 | +$170,793,609 | $30.31 | 144 |
| 2025 Q3 | 45,557,412 | $875,823,009 | +$220,884,566 | $19.23 | 104 |
| 2025 Q2 | 34,429,035 | $385,950,468 | +$30,431,109 | $11.21 | 81 |
| 2025 Q1 | 31,776,517 | $326,087,518 | -$21,453,560 | $10.26 | 70 |
| 2024 Q4 | 31,038,311 | $606,624,310 | +$125,781,752 | $19.39 | 66 |
| 2024 Q3 | 24,559,501 | $604,174,991 | +$603,646,384 | $24.51 | 41 |