# ETON PHARMACEUTICALS INC COM

ETON PHARMACEUTICALS INC COM is a security (CUSIP 29772L108) tracked across SEC portfolio filings. 128 institutional managers reported $446.8M on Form 13F as of 2026-06-30; 9 registered fund positions totaling $23.2M via N-PORT as of 2026-05-31.

## Summary

- Issuer: ETON PHARMACEUTICALS INC
- Class: COM
- CUSIP: 29772L108
- Asset category: EC
- 13F holders: 128
- 13F value: $446.8M
- 13F period: 2026-06-30
- N-PORT fund positions: 9
- N-PORT value: $23.2M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 128 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Opaleye Management Inc.](https://search.stillhousedata.com/firm/124513) | Boston, MA | $70.6M | 2,860,000 |
| [EcoR1 Capital, LLC](https://search.stillhousedata.com/firm/167121) | San Francisco, CA | $53.6M | 2,171,938 |
| BlackRock, Inc. | New York, NY | $42.4M | 1,717,286 |
| Nantahala Capital Management, LLC | New Canaan, CT | $29.0M | 1,175,951 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $22.8M | 1,348,668 |
| Westside Investment Management, Inc. | SANTA MONICA, CA | $15.6M | 430,660 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $14.3M | 577,666 |
| STATE STREET CORP | BOSTON, MA | $13.1M | 530,215 |
| National Philanthropic Trust | Jenkintown, PA | $12.1M | 492,112 |
| MORGAN STANLEY | NEW YORK, NY | $11.8M | 477,957 |
| [OBERWEIS ASSET MANAGEMENT INC/](https://search.stillhousedata.com/firm/105471) | Lisle, IL | $10.8M | 439,300 |
| [Pillsbury Lake Capital LLC](https://search.stillhousedata.com/firm/328282) | SAN FRANCISCO, CA | $9.0M | 364,954 |
| [CANNELL CAPITAL LLC](https://search.stillhousedata.com/firm/158371) | Alta, WY | $8.4M | 341,985 |
| BNP PARIBAS ARBITRAGE, SNC | PARIS, I0 | $7.5M | 302,108 |
| Lumbard & Kellner, LLC | HOLLIS, NH | $6.4M | 175,909 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Oberweis Micro-Cap Fund](https://search.stillhousedata.com/fund/S000010231) | OBERWEIS FUNDS | $10.4M | 98.91% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $6.4M | 0.78% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $4.0M | 2.29% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $973K | 2.02% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $828K | 8.40% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $265K | 0.05% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $247K | 0.08% |
| [DWS Small Cap Index VIP](https://search.stillhousedata.com/fund/S000006223) | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $90K | 2.14% |
| [TIAA Separate Account VA-1 - Stock Index Account](https://search.stillhousedata.com/fund/S000005098) | TIAA Separate Account VA-1 | $21K | 0.16% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/29772L108.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.