Rubico is trading 10.44% down at $1.02 in pre-market; no clear company-specific explanation for the September 23 decline was identified. - Rubico fell 8.80% to $1.14 on September 22. - The reviewed OTC Markets page showed no announcements or filings dated September 22–23. - Financial-sector weakness and broader rate concerns may be contributing, though the decline is substantially larger than the sector move.