Latest Period
Q4 2025
Security Snapshot
Rubico Inc. - Common Stock, par value $0.01 per share (RUBI) Institutional Ownership
CUSIP: Y1250N107
13F Institutional Holders and Ownership History from Q3 2025 to Q4 2025
Institutions Reporting
0
Shares (Excl. Options)
0
Price
$0.14
- Type / Class
- Equity / Common Stock, par value $0.01 per share
- Symbol
- RUBI on Nasdaq
- Shares outstanding
- 44,137,319
- Price per share
- $0.14
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 0
- Total reported value
- $0
- Share change
- -41,264
- Value change
- -$87,479
- Number of holders
- 0
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- RUBI - Rubico Inc. - Common Stock, par value $0.01 per share is tracked under CUSIP Y1250N107.
- 0 institutions reported positions in Q4 2025.
- 1 significant owner is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 6 to 0 between Q3 2025 and Q4 2025.
- Reported value moved from $87,479 to $0.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Official SEC Source
Backed by Form 13F
Ownership context comes from SEC Form 13F and, when available, Schedule 13D/13G filings.
See Original FilingInvestment Quick Answers
What is CUSIP Y1250N107?
CUSIP Y1250N107 identifies RUBI - Rubico Inc. - Common Stock, par value $0.01 per share in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Continue Investment Research
- Latest 13F filings for new institutional portfolio disclosures.
- Latest Schedule 13D/13G reports for activist and beneficial ownership updates.
- Latest 10-Q/10-K reports to cross-check issuer fundamentals.
- Recent insider transactions for management buying/selling context.
- SEC investors directory and top value investors for manager-level discovery.
- All institutional ownership pages to compare adjacent CUSIP pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP Y1250N107:
Significant Owners of Rubico Inc. - Common Stock, par value $0.01 per share (RUBI) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Family Trading Inc. | 3.3% | -43% | $2,271,306 | 1,465,359 | 0% | Family Trading Inc. | 12 Nov 2025 |
As of 31 Dec 2025, 0 institutional investors reported holding 0 shares of Rubico Inc. - Common Stock, par value $0.01 per share (RUBI). This represents 0% of the company’s total 44,137,319 outstanding shares.