Who owns Eledon Pharmaceuticals, Inc. (ELDN)
Which tracked institutional funds hold ELDN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ELDN company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on ELDN is one-sided between 2025-Q4 and 2026-Q1: 29 added or opened and 4 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ELDN’s largest tracked holder by dollar value, BVF INC/IL, sizes it at 0.6% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.6pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ELDN divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 121 tracked filers holding ELDN, 77 increased or opened the position and 36 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ELDN between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 3
- VANGUARD CAPITAL MANAGEMENT LLC$10M
- VANGUARD FIDUCIARY TRUST CO$2M
- VANGUARD PORTFOLIO MANAGEMENT LLC$1M
Full exits 3
- VANGUARD GROUP INC$6M
- Caligan Partners LP$840K
- JANE STREET GROUP, LLC$739K
Largest adds
- BVF INC/IL$10M
- BlackRock, Inc.$8M
- Defilade Capital Management, L.P.$6M
- Ensign Peak Advisors, Inc$4M
- GEODE CAPITAL MANAGEMENT, LLC$3M
- Catalio Capital Management, LP$3M
Largest trims
- Stonepine Capital Management, LLC$1M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BVF INC/IL | 6,293,282 | $19M | 10.5% | 2026-Q1 |
| BlackRock, Inc. added | 4,382,245 | $13M | 7.3% | 2026-Q1 |
| Defilade Capital Management, L.P. added | 3,564,127 | $11M | 6.0% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 3,293,134 | $10M | 5.5% | 2026-Q1 |
| Ensign Peak Advisors, Inc | 2,464,919 | $8M | 4.1% | 2026-Q1 |
| Zimmer Partners, LP trimmed | 1,875,000 | $6M | 3.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,791,783 | $6M | 3.0% | 2026-Q1 |
| SPHERA FUNDS MANAGEMENT LTD. trimmed | 1,772,131 | $5M | 3.0% | 2026-Q1 |
| Catalio Capital Management, LP added | 1,639,816 | $5M | 2.7% | 2026-Q1 |
| Blue Owl Capital Holdings LP trimmed | 1,419,912 | $4M | 2.4% | 2026-Q1 |
| STATE STREET CORP added | 1,154,671 | $4M | 1.9% | 2026-Q1 |
| AWM Investment Company, Inc. | 1,100,000 | $3M | 1.8% | 2026-Q1 |
| Jefferies Financial Group Inc. trimmed | 1,094,456 | $3M | 1.8% | 2026-Q1 |
| KINGDON CAPITAL MANAGEMENT, L.L.C. | 1,039,275 | $3M | 1.7% | 2026-Q1 |
| ADAR1 Capital Management, LLC trimmed | 974,421 | $3M | 1.6% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 869,544 | $3M | 1.5% | 2026-Q1 |
| Sanofi | 814,980 | $3M | 1.4% | 2026-Q1 |
| CM Management, LLC | 650,000 | $2M | 1.1% | 2026-Q1 |
| 22NW, LP | 636,364 | $2M | 1.1% | 2026-Q1 |
| SG Americas Securities, LLC added | 635,845 | $2M | 1.1% | 2026-Q1 |
| UBS Group AG trimmed | 547,447 | $2M | 0.9% | 2026-Q1 |
| NORTHERN TRUST CORP added | 543,842 | $2M | 0.9% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 503,764 | $2M | 0.8% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 429,889 | $1M | 0.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 370,090 | $1M | 0.6% | 2026-Q1 |
| Brevan Howard Capital Management LP added | 228,557 | $680K | 0.4% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 194,022 | $598K | 0.3% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 164,619 | $507K | 0.3% | 2026-Q1 |
| MORGAN STANLEY trimmed | 145,158 | $447K | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp added | 144,148 | $444K | 0.2% | 2026-Q1 |
| BIT Capital GmbH new | 134,000 | $413K | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 109,949 | $339K | 0.2% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 89,350 | $275K | 0.1% | 2026-Q1 |
| Daytona Street Capital LLC added | 81,166 | $254K | 0.1% | 2026-Q1 |
| Nuveen, LLC | 76,292 | $235K | 0.1% | 2026-Q1 |
| LPL Financial LLC added | 74,960 | $231K | 0.1% | 2026-Q1 |
| Rockefeller Capital Management L.P. | 71,666 | $221K | 0.1% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 67,081 | $204K | 0.1% | 2026-Q1 |
| XTX Topco Ltd trimmed | 66,235 | $204K | 0.1% | 2026-Q1 |
| PW Nova Financial Services LLC | 58,041 | $179K | 0.1% | 2026-Q1 |
| INGALLS & SNYDER LLC | 51,849 | $160K | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 50,162 | $155K | 0.1% | 2026-Q1 |
| Cambridge Investment Research Advisors, Inc. new | 48,202 | $148K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 47,626 | $147K | 0.1% | 2026-Q1 |
| MetLife Investment Management, LLC added | 42,105 | $130K | 0.1% | 2026-Q1 |
| Kera Capital Partners, Inc. added | 39,908 | $123K | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 36,569 | $113K | 0.1% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 35,054 | $108K | 0.1% | 2026-Q1 |
| Stonepine Capital Management, LLC trimmed | 35,000 | $108K | 0.1% | 2026-Q1 |
| Invesco Ltd. trimmed | 30,968 | $95K | 0.1% | 2026-Q1 |
| MARCO INVESTMENT MANAGEMENT LLC | 30,344 | $93K | 0.1% | 2026-Q1 |
| HOWARD FINANCIAL SERVICES, LTD. | 30,000 | $92K | 0.1% | 2026-Q1 |
| MITCHELL & PAHL PRIVATE WEALTH, LLC new | 30,000 | $92K | 0.1% | 2026-Q1 |
| GROUP ONE TRADING LLC added | 29,874 | $92K | 0.1% | 2026-Q1 |
| Cetera Investment Advisers added | 28,347 | $87K | 0.0% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 30,363 | $82K | 0.0% | 2026-Q1 |
| KESTRA PRIVATE WEALTH SERVICES, LLC new | 25,000 | $77K | 0.0% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 24,600 | $76K | 0.0% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 22,231 | $68K | 0.0% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 20,434 | $63K | 0.0% | 2026-Q1 |
| INTECH INVESTMENT MANAGEMENT LLC trimmed | 20,331 | $63K | 0.0% | 2026-Q1 |
| Baker Ellis Asset Management LLC new | 19,000 | $59K | 0.0% | 2026-Q1 |
| RA CAPITAL MANAGEMENT, L.P. | 3,566,338 | $9M | 5.0% | 2025-Q3 stale |
| First Light Asset Management, LLC added | 2,600,498 | $7M | 3.8% | 2025-Q2 stale |
| VANGUARD GROUP INC added | 4,039,686 | $6M | 3.3% | 2025-Q4 stale |
| Siren, L.L.C. added | 2,072,767 | $5M | 2.9% | 2025-Q3 stale |
| WELLINGTON MANAGEMENT GROUP LLP added | 1,283,939 | $3M | 1.8% | 2025-Q3 stale |
| Nantahala Capital Management, LLC | 1,141,237 | $3M | 1.6% | 2025-Q3 stale |
| Ikarian Capital, LLC trimmed | 1,000,221 | $3M | 1.5% | 2025-Q2 stale |
| Schonfeld Strategic Advisors LLC trimmed | 998,454 | $3M | 1.5% | 2025-Q2 stale |
| Alyeska Investment Group, L.P. | 933,475 | $3M | 1.4% | 2025-Q2 stale |
| Woodline Partners LP trimmed | 800,822 | $2M | 1.1% | 2025-Q3 stale |
| Kovitz Investment Group Partners, LLC new | 732,975 | $2M | 1.0% | 2025-Q3 stale |
| Velan Capital Investment Management LP added | 346,973 | $899K | 0.5% | 2025-Q3 stale |
| Caligan Partners LP new | 555,978 | $840K | 0.5% | 2025-Q4 stale |
| JANE STREET GROUP, LLC added | 489,376 | $739K | 0.4% | 2025-Q4 stale |
| Qube Research & Technologies Ltd added | 175,891 | $596K | 0.3% | 2025-Q1 stale |
| Focus Partners Wealth new | 317,443 | $479K | 0.3% | 2025-Q4 stale |
| CITADEL ADVISORS LLC added | 152,460 | $413K | 0.2% | 2025-Q2 stale |
| HRT FINANCIAL LP new | 113,275 | $384K | 0.2% | 2025-Q1 stale |
| Informed Momentum Co LLC | 109,555 | $371K | 0.2% | 2025-Q1 stale |
| Allostery Investments LP | 100,000 | $339K | 0.2% | 2025-Q1 stale |
| Exome Asset Management LLC | 114,145 | $309K | 0.2% | 2025-Q2 stale |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 151,569 | $229K | 0.1% | 2025-Q4 stale |
| Jain Global LLC new | 67,212 | $228K | 0.1% | 2025-Q1 stale |
| BALYASNY ASSET MANAGEMENT L.P. added | 61,520 | $209K | 0.1% | 2025-Q1 stale |
| OMERS ADMINISTRATION Corp trimmed | 56,500 | $192K | 0.1% | 2025-Q1 stale |
| DIADEMA PARTNERS LP | 64,613 | $175K | 0.1% | 2025-Q2 stale |
| Quadrature Capital Ltd added | 106,014 | $160K | 0.1% | 2025-Q4 stale |
| WOLVERINE TRADING, LLC added | 59,574 | $151K | 0.1% | 2025-Q3 stale |
| ALPS ADVISORS INC trimmed | 44,436 | $151K | 0.1% | 2025-Q1 stale |
| LMR Partners LLP new | 37,783 | $128K | 0.1% | 2025-Q1 stale |
| Graham Capital Management, L.P. new | 70,260 | $106K | 0.1% | 2025-Q4 stale |
| BRIGHTON JONES LLC new | 39,355 | $102K | 0.1% | 2025-Q3 stale |
| PRELUDE CAPITAL MANAGEMENT, LLC trimmed | 36,141 | $98K | 0.1% | 2025-Q2 stale |
| Squarepoint Ops LLC added | 36,297 | $94K | 0.1% | 2025-Q3 stale |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 33,400 | $87K | 0.0% | 2025-Q3 stale |
| Pathstone Holdings, LLC trimmed | 29,464 | $80K | 0.0% | 2025-Q2 stale |
| Freestone Capital Holdings, LLC new | 27,366 | $74K | 0.0% | 2025-Q2 stale |
| ExodusPoint Capital Management, LP added | 21,733 | $74K | 0.0% | 2025-Q1 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.