Sunshine Silver Mining & Refining Co (SSMR) Institutional Ownership and Insiders Activity

Sunshine Silver Mining & Refining Co (SSMR) is widely held by institutional investors, with 45 firms reporting positions valued at approximately $1.36B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Electrum Group Llc is the largest disclosed holder, reporting approximately $1.13B in SSMR holdings in its latest filing.

Institutional ownership remains highly concentrated, with Electrum Group Llc representing the majority of disclosed value.