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SCHEDULE Filed 2025-11-07 Event 2025-11-05 SEC 0001171843-25-007139 →

Family Trading Inc. → Rubico Inc. RUBI

Stake: 7.45% Shares: 1,465,359 CUSIP: Y1250N107 Class: Common Stock, par value $0.01 per share
Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 7/100 · Filer 90d Win Rate: 0% · Hist. 90d Edge: +0.0%
  • Filer track record (3 filings): 0% 90d win rate, +0.0% 90d edge
  • Short interest building (+273.5% vs prior settlement)

Item 4 — Purpose of Transaction

There are no material changes to this Item 4 from the Existing Schedule 13D.

Cross-References

Insider Activity (last 365d)
0 transactions
0 buys · 0 sales · 0 awards/exercises
Issuer Cluster
3 13D/G filings on this issuer
2 other filings besides this one
Filer Track Record
37 filings by this filer
36 other filings in the data moat
Short Interest · settle 2026-10-15
DTC 1.00
264,415 shares short · +273.5% vs prior

Post-Filing Returns · since 2025-11-05 on RUBI

+1 day
0.0%
+5 days
0.0%
+30 days
0.0%
+60 days
0.0%
+90 days
0.0%
+180 days
0.0%

Anchor price 4.73 on closest trading day on/after 2025-11-05. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Rubico Inc.

FiledFormFilerStakeShares
2026-06-11 SCHEDULE 13G Trillium Trading, LLC — — view →
2025-11-12 SCHEDULE Family Trading Inc. 5.91% 1,465,359 view →

Other Filings by Family Trading Inc.

FiledFormIssuerStakeShares
2026-09-24 SCHEDULE 13D/A TOP SHIPS INC. 23.71% 2,930,718 view →
2026-09-21 SCHEDULE 13D/A TOP SHIPS INC. — 2,930,718 view →
2026-05-18 SCHEDULE 13D/A TOP SHIPS INC. TOPS — 2,930,718 view →
2025-11-12 SCHEDULE Rubico Inc. RUBI 5.91% 1,465,359 view →
2023-11-08 SC TOP SHIPS INC. TOPS — — view →
2023-10-17 SC TOP SHIPS INC. TOPS — — view →
2023-10-04 SC TOP SHIPS INC. TOPS — — view →
2022-12-12 SC TOP SHIPS INC. TOPS — — view →
2022-10-11 SC TOP SHIPS INC. TOPS — — view →
2022-04-01 SC TOP SHIPS INC. TOPS — — view →
2022-03-17 SC TOP SHIPS INC. TOPS — — view →
2022-03-04 SC TOP SHIPS INC. TOPS — — view →
2022-01-07 SC TOP SHIPS INC. TOPS — — view →
2021-12-09 SC TOP SHIPS INC. TOPS — — view →
2021-11-18 SC TOP SHIPS INC. TOPS — — view →
2021-11-05 SC TOP SHIPS INC. TOPS — — view →
2021-10-25 SC TOP SHIPS INC. TOPS — — view →
2021-10-07 SC TOP SHIPS INC. TOPS — — view →
2021-09-24 SC TOP SHIPS INC. TOPS — — view →
2021-09-14 SC TOP SHIPS INC. TOPS — — view →
Showing 20 of 36

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