ENANTA PHARMACEUTICALS INC ENTA
COM · Common Stock · CUSIP 29251M106
Company in Watertown, United States
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersWatertown, MA
- Founded1995
- Websiteenanta.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($295.9k this quarter). Holder counts are more reliable. Shares outstanding: 29.1m as of 2026-08-07, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $14.57. Options: 4 managers hold calls ($654.6k notional), 3 hold puts ($341.2k).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 160 |
| Q4 2022 | 148 |
| Q1 2023 | 146 |
| Q2 2023 | 135 |
| Q3 2023 | 134 |
| Q4 2023 | 107 |
| Q1 2024 | 109 |
| Q2 2024 | 102 |
| Q3 2024 | 113 |
| Q4 2024 | 109 |
| Q1 2025 | 111 |
| Q2 2025 | 109 |
| Q3 2025 | 122 |
| Q4 2025 | 132 |
| Q1 2026 | 133 |
| Q2 2026 | 122 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 54 | 37 |
| Q4 2024 | 52 | 58 |
| Q1 2025 | 54 | 51 |
| Q2 2025 | 48 | 60 |
| Q3 2025 | 58 | 53 |
| Q4 2025 | 78 | 52 |
| Q1 2026 | 69 | 54 |
| Q2 2026 | 58 | 57 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $3.7m | $869.9k | 0.24 |
| Q4 2025 | $2.1m | $25.2k | 0.01 |
| Q1 2026 | $496.4k | $214.7k | 0.43 |
| Q2 2026 | $654.6k | $341.2k | 0.52 |
Biggest buyers
| ADAR1 Capital Management, LLC | Added | +1.3m |
| SummitTX Capital, L.P. | New | +257.7k |
| GOLDMAN SACHS GROUP INC | Added | +199.6k |
| ACADIAN ASSET MANAGEMENT LLC | Added | +198.3k |
| Spruce Street Capital LP | Added | +156.1k |
| Rockefeller Capital Management L.P. | Added | +148.0k |
| BlackRock, Inc. | Added | +140.7k |
| DIMENSIONAL FUND ADVISORS LP | Added | +79.4k |
| MACKENZIE FINANCIAL CORP | New | +67.4k |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Added | +62.6k |
Biggest sellers
| Deep Track Capital, LP | Reduced | -512.7k |
| FARALLON CAPITAL MANAGEMENT, L.L.C. | Reduced | -453.7k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -238.1k |
| CITADEL ADVISORS LLC | Reduced | -211.7k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -196.2k |
| Invesco Ltd. | Reduced | -122.5k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -107.7k |
| MARSHALL WACE, LLP | Reduced | -78.1k |
| DIADEMA PARTNERS LP | Sold out | -65.0k |
| AQR CAPITAL MANAGEMENT LLC | Reduced | -56.3k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $382.0k26.2k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $185.2k12.7k shares |
| SIMPLEX TRADING, LLC | Added | $84.6k5.8k shares |
| GROUP ONE TRADING LLC | Reduced | $2.9k200 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $296.0k20.3k shares |
| SIMPLEX TRADING, LLC | Added | $42.3k2.9k shares |
| GROUP ONE TRADING LLC | Unchanged | $2.9k200 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| JANUS HENDERSON GROUP PLC 13G · institution new · filed 2025-11-07 | 12.1% |
| Farallon Capital Partners, L.P. 13G · passive investor -0.1 pts · filed 2026-02-05 | 9.8% |
| FARALLON CAPITAL MANAGEMENT, L.L.C. 13G · institution filed 2026-08-14 | 8.3% |
| BlackRock, Inc. 13G · institution filed 2025-04-17 | 7.8% |
| Luly Jay R. 13D · may seek influence filed 2025-02-14 | 7.7% |
| BlackRock Portfolio Management LLC 13G · institution new · filed 2026-10-27 | 5.4% |
Fell to 5% or below in the last year: Deep Track Capital, LP (5.0%, 2026-08-14), VANGUARD GROUP INC (0.0%, 2026-03-26), INTEGRATED CORE STRATEGIES (US) LLC (2.3%, 2026-01-20)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 6 | $87.7k | $87.7k |
| Q1 2025 | 1 | $256.1k | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 7 | $183.2k | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| Jupiter Topco LLC 0.02% of their portfolio | 3.7m $53.3m | First filing |
| BlackRock, Inc. 0.00% of their portfolio | 3.2m $47.3m | Added +140.7k |
| Krensavage Asset Management, LLC 15.88% of their portfolio | 2.9m $41.8m | Unchanged |
| FARALLON CAPITAL MANAGEMENT, L.L.C. 0.21% of their portfolio | 2.4m $35.3m | Reduced -453.7k |
| Deep Track Capital, LP 0.31% of their portfolio | 1.4m $21.1m | Reduced -512.7k |
| ADAR1 Capital Management, LLC 0.92% of their portfolio | 1.3m $19.6m | Added +1.3m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.2m $17.7m | Added +33.7k |
| Spruce Street Capital LP 3.11% of their portfolio | 1.1m $15.9m | Added +156.1k |
| ACADIAN ASSET MANAGEMENT LLC 0.02% of their portfolio | 1.1m $15.7m | Added +198.3k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 1.0m $14.7m | Added +62.6k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 776.6k $11.3m | Added +51.6k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 644.0k $9.4m | Reduced -238.1k |
| STATE STREET CORP 0.00% of their portfolio | 576.1k $8.4m | Added +14.0k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 557.6k $8.1m | Reduced -107.7k |
| Hillsdale Investment Management Inc. 0.16% of their portfolio | 468.0k $6.8m | Added +32.5k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 464.6k $6.8m | Added +199.6k |
| MORGAN STANLEY 0.00% of their portfolio | 315.7k $4.6m | Added +6.2k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 301.2k $4.4m | Added +6.2k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 282.7k $4.1m | Added +79.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 259.7k $3.8m | Added +18.7k |
| SummitTX Capital, L.P. 0.10% of their portfolio | 257.7k $3.8m | New |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 256.9k $3.7m | Reduced -56.3k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 185.6k $2.7m | Added +9.8k |
| Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio | 153.0k $2.2m | Added +27.2k |
| Rockefeller Capital Management L.P. 0.00% of their portfolio | 150.5k $2.2m | Added +148.0k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 132.0k $1.9m | Reduced -78.1k |
| Opaleye Management Inc. 0.17% of their portfolio | 125.0k $1.8m | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 96.8k $1.4m | Reduced -6.3k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 84.2k $1.2m | Added +11.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 81.6k $1.2m | Added +6.7k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 81.0k $1.2m | Reduced -36.0k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 76.8k $1.1m | Added +6.0k |
| XTX Topco Ltd 0.01% of their portfolio | 75.5k $1.1m | Added +42.3k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 71.2k $1.0m | Reduced -196.2k |
| Campbell & CO Investment Adviser LLC 0.05% of their portfolio | 70.8k $1.0m | Added +30.6k |
| Trexquant Investment LP 0.01% of their portfolio | 69.6k $1.0m | Added +13.4k |
| MACKENZIE FINANCIAL CORP 0.00% of their portfolio | 67.4k $982.2k | New |
| SEI INVESTMENTS CO 0.00% of their portfolio | 66.7k $972.3k | Reduced -42.4k |
| UBS Group AG 0.00% of their portfolio | 64.3k $937.8k | Added +515 |
| Invesco Ltd. 0.00% of their portfolio | 59.5k $867.9k | Reduced -122.5k |
| Nuveen, LLC 0.00% of their portfolio | 57.1k $833.0k | Added +4.9k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 50.8k $741.3k | Reduced -211.7k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 48.5k $707.4k | Reduced -18.4k |
| Quantinno Capital Management LP 0.00% of their portfolio | 45.1k $657.7k | Added +10.0k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 40.9k $596.4k | Added +22.3k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 39.9k $581.2k | Added +1.9k |
| IEQ CAPITAL, LLC 0.00% of their portfolio | 38.5k $561.4k | Reduced -164 |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 37.9k $478.7k | Added +4.2k |
| PANAGORA ASSET MANAGEMENT INC 0.00% of their portfolio | 34.8k $507.2k | Reduced -54.8k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 34.6k $504.0k | Added +3.2k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 34.5k $503.6k | Reduced -36.3k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 33.9k $493.8k | Unchanged |
| GSA CAPITAL PARTNERS LLP 0.03% of their portfolio | 32.5k $474.0k | New |
| ALPS ADVISORS INC 0.00% of their portfolio | 29.5k $430.2k | New |
| FMR LLC 0.00% of their portfolio | 29.5k $430.2k | Added +2.2k |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 28.4k $414.0k | Unchanged |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 28.0k $407.5k | Added +8.6k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 24.9k $363.6k | Added +14.5k |
| Portland Global Advisors LLC 0.03% of their portfolio | 24.3k $353.9k | Unchanged |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 24.1k $351.6k | Added +9.9k |
| MARTINGALE ASSET MANAGEMENT L P 0.01% of their portfolio | 23.8k $346.7k | Added +7.2k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 23.3k $340.0k | Added +4.6k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 21.5k $314.0k | Reduced -5.1k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 20.4k $297.4k | Reduced -1.8k |
| BARCLAYS PLC 0.00% of their portfolio | 18.7k $272.0k | Added +261 |
| Headlands Technologies LLC 0.03% of their portfolio | 17.7k $257.9k | Reduced -4.9k |
| Susquehanna Portfolio Strategies, LLC 0.00% of their portfolio | 17.2k $251.4k | New |
| MetLife Investment Management, LLC 0.00% of their portfolio | 15.5k $226.6k | Unchanged |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 14.9k $217.5k | New |
| CITIGROUP INC 0.00% of their portfolio | 13.9k $202.3k | Added +11.8k |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio | 13.3k $182.4k | Reduced -304 |
| Engineers Gate Manager LP 0.00% of their portfolio | 13.1k $190.7k | Reduced -3.9k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 13.1k $190.5k | Added +93 |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 10.5k $153.8k | Reduced -12.5k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 9.9k $145.0k | Added +3.3k |
| Arax Advisory Partners 0.00% of their portfolio | 7.2k $104.7k | Added +7.1k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 6.1k $88.5k | Unchanged |
| Clearstead Trust, LLC 0.01% of their portfolio | 5.1k $73.8k | Unchanged |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 4.6k $67.5k | Reduced -522 |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 4.3k $62.4k | Reduced -12.5k |
| STRS OHIO 0.00% of their portfolio | 3.2k $46.7k | Unchanged |
| Legal & General Group Plc 0.00% of their portfolio | 2.8k $41.0k | Added +372 |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 2.6k $37.5k | Added +602 |
| Pinnacle Wealth Planning Services, Inc. 0.00% of their portfolio | 2.5k $36.9k | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 1.9k $27.0k | Added +947 |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 1.6k $23.4k | Reduced -3.1k |
| Versant Capital Management, Inc 0.00% of their portfolio | 1.4k $20.8k | Unchanged |
| GAMMA Investing LLC 0.00% of their portfolio | 1.4k $19.8k | Reduced -46 |
| Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio | 1.3k $19.0k | Reduced -214 |
| EverSource Wealth Advisors, LLC 0.00% of their portfolio | 1.2k $17.1k | Reduced -124 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 940 $13.0k | Added +830 |
| True Wealth Design, LLC 0.00% of their portfolio | 645 $9.4k | Unchanged |
| GF FUND MANAGEMENT CO. LTD. 0.00% of their portfolio | 617 $9.0k | Reduced -23 |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 556 $8.1k | Unchanged |
| State of Wyoming 0.00% of their portfolio | 530 $7.7k | Reduced -12.9k |
| Allworth Financial LP 0.00% of their portfolio | 403 $5.9k | Reduced -22 |
| IFP Advisors, Inc 0.00% of their portfolio | 402 $5.9k | Added +6 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 382 $5.6k | Reduced -1.1k |
| Essential Partners LLC 0.00% of their portfolio | 380 $5.5k | Reduced -1.1k |
| FIFTH THIRD BANCORP 0.00% of their portfolio | 367 $5.4k | Unchanged |