| # | % | |||||
|---|---|---|---|---|---|---|
| 1 | BLUESTEIN R H & CO LLC | 10,000 | 298,000 | 16.23% | ||
| 2 | SFE Investment Counsel | 51,630 | 1,538,000 | 83.77% |
From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.
