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ETON · Eton Pharmaceuticals, Inc.

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$63.47 +3.56 (+5.94%) At close · Aug 21
Market Cap
$1.81B
Shares
28.58M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 163
Total Value: $729,660,627
Total Shares: 20,156,389

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 163 13F filers · Δ vs Mar 31, 2026
Top Holder
14.2%
Sep 2023 → Jun 2026 · range 14.2% – 35.0%
−1.7 pts
Top 5
45.0%
Sep 2023 → Jun 2026 · range 45.0% – 66.5%
−4.5 pts
Top 10
60.5%
Sep 2023 → Jun 2026 · range 60.5% – 83.0%
−3.1 pts
HHI
550
Sep 2023 → Jun 2026 · range 550 – 1,588
Broadly held−93

Quarterly Activity

vs Mar 31, 2026
New
54
Increased
57
Decreased
35
Sold Out
7
Unchanged
17
Holder count: +47
Institutional value: +64.1%
Shares held: +11.9%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 168
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1710340 CUSIP 29772L108 13F (30d) 146 filings 145 filers Visit website Investor relations