ELEDON PHARMACEUTICALS INC ELDN
COM · Common Stock · CUSIP 28617K101
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersIrvine, CA
- 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 ($22.8k this quarter). Holder counts are more reliable. Shares outstanding: 81.3m as of 2026-08-10, 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 ≈ $3.94. Options: 6 managers hold calls ($939.8k notional), 5 hold puts ($5.3m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 32 |
| Q4 2022 | 28 |
| Q1 2023 | 31 |
| Q2 2023 | 34 |
| Q3 2023 | 29 |
| Q4 2023 | 30 |
| Q1 2024 | 30 |
| Q2 2024 | 33 |
| Q3 2024 | 34 |
| Q4 2024 | 76 |
| Q1 2025 | 84 |
| Q2 2025 | 86 |
| Q3 2025 | 83 |
| Q4 2025 | 95 |
| Q1 2026 | 121 |
| Q2 2026 | 161 |
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 | 11 | 8 |
| Q4 2024 | 58 | 5 |
| Q1 2025 | 34 | 31 |
| Q2 2025 | 49 | 40 |
| Q3 2025 | 44 | 43 |
| Q4 2025 | 59 | 36 |
| Q1 2026 | 73 | 35 |
| Q2 2026 | 112 | 31 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $16.0k | $1.4m | 85.81 |
| Q4 2025 | $152.7k | $86.7k | 0.57 |
| Q1 2026 | $649.3k | $37.9k | 0.06 |
| Q2 2026 | $939.8k | $5.3m | 5.62 |
Biggest buyers
| GOLDMAN SACHS GROUP INC | Added | +2.1m |
| MILLENNIUM MANAGEMENT LLC | New | +979.7k |
| BlackRock, Inc. | Added | +741.6k |
| UBS Group AG | Added | +500.8k |
| DIMENSIONAL FUND ADVISORS LP | Added | +471.7k |
| STATE STREET CORP | Added | +467.3k |
| AQR CAPITAL MANAGEMENT LLC | Added | +408.6k |
| MORGAN STANLEY | Added | +339.9k |
| Triumph Capital Management | New | +303.4k |
| CITADEL ADVISORS LLC | New | +216.0k |
Biggest sellers
| Jefferies Financial Group Inc. | Sold out | -1.1m |
| Blue Owl Capital Holdings LP | Reduced | -853.4k |
| Sanofi | Sold out | -815.0k |
| SG Americas Securities, LLC | Sold out | -635.8k |
| SPHERA FUNDS MANAGEMENT LTD. | Reduced | -580.9k |
| Ensign Peak Advisors, Inc | Reduced | -363.7k |
| ADAR1 Capital Management, LLC | Reduced | -326.6k |
| Zimmer Partners, LP | Reduced | -278.4k |
| CM Management, LLC | Reduced | -75.0k |
| Defilade Capital Management, L.P. | Reduced | -38.8k |
Biggest calls
| Blue Owl Capital Holdings LP | New | $285.0k200.0k shares |
| GROUP ONE TRADING LLC | Reduced | $270.7k68.7k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $236.0k59.9k shares |
| CITADEL ADVISORS LLC | Reduced | $60.3k15.3k shares |
| JANE STREET GROUP, LLC | Reduced | $57.5k14.6k shares |
| SIMPLEX TRADING, LLC | Reduced | $30.3k7.7k shares |
Biggest puts
| SIMPLEX TRADING, LLC | Added | $1.3m318.7k shares |
| CITADEL ADVISORS LLC | New | $1.1m279.4k shares |
| JANE STREET GROUP, LLC | New | $1.1m278.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $978.3k248.3k shares |
| GROUP ONE TRADING LLC | Added | $847.5k215.1k 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 |
|---|---|
| BIOTECHNOLOGY VALUE FUND L P 13G · passive investor filed 2026-05-15 | 10.0% |
| BlackRock, Inc. 13G · institution +1.2 pts · filed 2026-04-27 | 5.8% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-07-31 | 5.0% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC), RA CAPITAL MANAGEMENT, L.P. (0.0%, 2026-02-17), Coastlands Capital LP (5.0%, 2026-02-13)
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.
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BVF INC/IL 0.63% of their portfolio | 6.3m $24.8m | Unchanged |
| BlackRock, Inc. 0.00% of their portfolio | 5.1m $20.2m | Added +741.6k |
| Defilade Capital Management, L.P. 1.86% of their portfolio | 3.5m $13.9m | Reduced -38.8k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 3.4m $13.5m | Added +124.1k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 2.5m $9.9m | Added +2.1m |
| Ensign Peak Advisors, Inc 0.01% of their portfolio | 2.1m $8.3m | Reduced -363.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.0m $7.7m | Added +164.8k |
| Catalio Capital Management, LP 1.26% of their portfolio | 1.7m $6.7m | Added +55.3k |
| STATE STREET CORP 0.00% of their portfolio | 1.6m $6.4m | Added +467.3k |
| Zimmer Partners, LP 0.15% of their portfolio | 1.6m $6.3m | Reduced -278.4k |
| SPHERA FUNDS MANAGEMENT LTD. 0.67% of their portfolio | 1.2m $4.7m | Reduced -580.9k |
| AWM Investment Company, Inc. 0.38% of their portfolio | 1.1m $4.3m | Unchanged |
| UBS Group AG 0.00% of their portfolio | 1.0m $4.1m | Added +500.8k |
| KINGDON CAPITAL MANAGEMENT, L.L.C. 0.55% of their portfolio | 1.0m $4.1m | Unchanged |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 979.7k $3.9m | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 883.1k $3.5m | Added +13.6k |
| ADAR1 Capital Management, LLC 0.12% of their portfolio | 647.8k $2.6m | Reduced -326.6k |
| 22NW, LP 2.40% of their portfolio | 636.4k $2.5m | Unchanged |
| NORTHERN TRUST CORP 0.00% of their portfolio | 616.4k $2.4m | Added +72.6k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 581.0k $2.3m | Added +408.6k |
| CM Management, LLC 1.44% of their portfolio | 575.0k $2.3m | Reduced -75.0k |
| Blue Owl Capital Holdings LP 0.34% of their portfolio | 566.5k $2.2m | Reduced -853.4k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 538.7k $2.1m | Added +471.7k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 533.4k $2.1m | Added +103.5k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 529.0k $2.1m | Added +25.2k |
| MORGAN STANLEY 0.00% of their portfolio | 485.1k $1.9m | Added +339.9k |
| Brevan Howard Capital Management LP 0.02% of their portfolio | 304.7k $1.2m | Added +76.2k |
| Triumph Capital Management 0.22% of their portfolio | 303.4k $1.2m | New |
| BIT Capital GmbH 0.04% of their portfolio | 266.0k $1.0m | Added +132.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 252.2k $993.8k | Added +142.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 247.4k $974.8k | Added +53.4k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 216.0k $850.9k | New |
| Nuveen, LLC 0.00% of their portfolio | 209.1k $823.8k | Added +132.8k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 200.9k $791.5k | Added +176.3k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 166.9k $657.7k | Added +22.8k |
| Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio | 119.9k $472.0k | Added +71.7k |
| LPL Financial LLC 0.00% of their portfolio | 111.7k $440.1k | Added +36.7k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.00% of their portfolio | 109.8k $432.8k | New |
| Maven Securities LTD 0.04% of their portfolio | 100.0k $394.0k | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 88.6k $349.1k | Added +41.0k |
| SIMPLEX TRADING, LLC 0.01% of their portfolio | 88.6k $349.1k | New |
| Prodigy Asset Management LLC 0.10% of their portfolio | 86.7k $341.6k | New |
| Daytona Street Capital LLC 0.23% of their portfolio | 81.2k $313.3k | Unchanged |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 76.6k $302.0k | Reduced -12.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 74.9k $295.3k | Added +38.4k |
| Rockefeller Capital Management L.P. 0.00% of their portfolio | 72.7k $286.3k | Added +1.0k |
| Susquehanna Portfolio Strategies, LLC 0.00% of their portfolio | 71.9k $283.4k | Added +61.8k |
| Shay Capital LLC 0.03% of their portfolio | 64.0k $252.2k | New |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 64.0k $253.0k | Added +13.8k |
| Invesco Ltd. 0.00% of their portfolio | 59.3k $233.6k | Added +28.3k |
| PW Nova Financial Services LLC 0.05% of their portfolio | 58.0k $228.7k | Unchanged |
| INGALLS & SNYDER LLC 0.01% of their portfolio | 51.8k $204.0k | Unchanged |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 51.0k $201.0k | New |
| Mariner, LLC 0.00% of their portfolio | 50.0k $197.1k | New |
| IEQ CAPITAL, LLC 0.00% of their portfolio | 48.2k $189.8k | New |
| GSA CAPITAL PARTNERS LLP 0.01% of their portfolio | 42.0k $166.0k | New |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 40.9k $161.2k | Added +35.6k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 40.9k $161.2k | Reduced -1.2k |
| Kera Capital Partners, Inc. 0.02% of their portfolio | 40.2k $158.4k | Added +300 |
| Virtu Financial LLC 0.00% of their portfolio | 40.0k $158.0k | New |
| XTX Topco Ltd 0.00% of their portfolio | 38.3k $150.9k | Reduced -27.9k |
| CITIGROUP INC 0.00% of their portfolio | 36.1k $142.1k | Added +32.6k |
| NAVELLIER & ASSOCIATES INC 0.01% of their portfolio | 35.9k $141.5k | New |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 35.5k $139.8k | Added +419 |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 35.4k $139.5k | Added +21.4k |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio | 34.6k $133.3k | New |
| MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio | 33.5k $132.0k | Added +18.4k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 32.9k $129.8k | New |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 32.4k $99.8k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 32.3k $125.4k | Added +1.9k |
| MARCO INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 30.3k $119.6k | Unchanged |
| Retirement Planning Group, LLC 0.00% of their portfolio | 30.0k $118.2k | New |
| HOWARD FINANCIAL SERVICES, LTD. 0.01% of their portfolio | 30.0k $118.2k | Unchanged |
| Cetera Investment Advisers 0.00% of their portfolio | 28.9k $113.7k | Added +520 |
| KESTRA PRIVATE WEALTH SERVICES, LLC 0.00% of their portfolio | 27.5k $108.3k | Added +2.5k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 27.1k $106.9k | New |
| Cerity Partners LLC 0.00% of their portfolio | 26.6k $104.8k | New |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 24.9k $98.2k | Added +2.7k |
| GROUP ONE TRADING LLC 0.00% of their portfolio | 24.7k $97.4k | Reduced -5.1k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 23.5k $92.6k | Added +11.7k |
| Creative Planning 0.00% of their portfolio | 23.5k $92.4k | New |
| Scientech Research LLC 0.07% of their portfolio | 22.8k $90.0k | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 22.4k $88.2k | New |
| Private Advisor Group, LLC 0.00% of their portfolio | 21.8k $85.7k | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 21.5k $84.5k | Added +1.0k |
| Jump Financial, LLC 0.00% of their portfolio | 21.3k $83.8k | New |
| JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio | 20.0k $75.4k | Added +5.0k |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 19.4k $76.6k | Reduced -897 |
| Corient Private Wealth LP 0.00% of their portfolio | 18.1k $71.4k | New |
| Relyea Zuckerberg Hanson LLC 0.01% of their portfolio | 17.0k $67.0k | Added +5.0k |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 16.6k $65.2k | New |
| Baker Ellis Asset Management LLC 0.01% of their portfolio | 16.0k $63.0k | Reduced -3.0k |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 16.0k $63.0k | New |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 15.9k $62.7k | Added +2.7k |
| BLAIR WILLIAM & CO/IL 0.00% of their portfolio | 14.9k $58.9k | Added +427 |
| Independent Advisor Alliance 0.00% of their portfolio | 14.3k $56.3k | New |
| Revolve Wealth Partners, LLC 0.01% of their portfolio | 14.1k $55.7k | Unchanged |
| Waverly Advisors, LLC 0.00% of their portfolio | 13.9k $54.6k | Added +1.3k |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 13.7k $53.8k | New |
| NEUBERGER BERMAN GROUP LLC 0.00% of their portfolio | 13.2k $52.2k | New |