3 institutions reported holding $6,184 of Atomera Inc (ATOM) in SEC 13F filings for 2026-06-30. Largest institutional holders: GAMMA Investing LLC ($4,233), MassMutual Private Wealth & Trust, FSB ($1,951), ACT WEALTH MANAGEMENT, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GAMMA Investing LLC | $4,233 | 486 | Trimmed |
| 2 | MassMutual Private Wealth & Trust, FSB | $1,951 | 224 | New |
| 3 | ACT WEALTH MANAGEMENT, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30