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UAMY

United States Antimony Corp

Company with tickers: UAMY

CIK
101538
CUSIP
911549103
Shares Outstanding
148,185,622
13F Activity (30d)
137 filings 135 filers

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: 240
Total Value: $740,945,145
Total Shares: 84,873,457
Showing 1–100 of 257 holdings by value · page 1 of 3

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 240 13F filers · Δ vs Dec 31, 2025
Top Holder
12.2%
Sep 2023 → Mar 2026 · range 12.2% – 37.8%
−0.7 pts
Top 5
46.5%
Sep 2023 → Mar 2026 · range 43.3% – 77.2%
−4.6 pts
Top 10
64.6%
Sep 2023 → Mar 2026 · range 62.0% – 91.6%
−3.4 pts
HHI
568
Sep 2023 → Mar 2026 · range 537 – 1,933
Broadly held−51

Quarterly Activity

vs Dec 31, 2025
New
71
Increased
78
Decreased
43
Sold Out
48
Unchanged
48
Holder count: +23
Institutional value: +104.1%
Shares held: +17.4%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Showing 100 of 257
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Holder Value (USD) % of 13F Shares Open