Rubico Inc. is a US-listed company in the marine transportation industry. Its financial year ends in December.
Stock price today
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Third-party market data · may be delayed
Fair value per share
Under review: every model's value for Rubico Inc. is far from the share price, which usually points to a data problem (a merger, a share-count change, a one-off) rather than a bargain or a bubble.
Price vs value
Under review: cash-flow, stock-pay or share-count figures missing or out of date. We'll show the comparison once resolved.
Rubico Inc. valuation: adjust assumptions and compare models →
Who’s trading
What company insiders, investment funds and members of Congress have been doing with the stock, from their own filings.
- Insiders1 buying, 1 selling1 purchase and 1 sale by directors and officers, last 12 monthsInsider trades
- Funds2 adding, 0 cuttingOf 1 active managers that changed their stake, 1 added; quarter to June 30, 2026Fund buyers and sellers
The Fundamentalytics view
Rubico Inc.'s trailing-twelve-month revenue fell 2.8% year on year, with a free-cash-flow margin of -36.6%. Where it stands out: operating margin of 52.7% ranks 6 of 40 marine transportation companies we cover. Where it lags: change in share count of 312.6% ranks 37 of 39 marine transportation companies we cover.
Current signal Share count rising (dilution): Diluted shares outstanding rose 312.6% year over year.
Assembled from SEC-filed figures — the full workings are on this page and in our methodology. Observations, not recommendations.
Highlights
How we pick theseStrengths
- High operating margin. 52.7% of revenue is left as operating profit, against a median of 19.8% for marine transportation companies we cover.
Things to watch
- Revenue shrinking. Revenue fell 2.8% over the last 12 months.
- Burning cash. Free cash flow was -36.6% of revenue over the last 12 months.
- Share dilution. Diluted shares rose 312.6% in a year.
- High debt. Long-term debt exceeds cash by $0.1bn, more than 1.5 times annual revenue.
- Volatile shares. Over the past year the shares showed annualised volatility of 164% and a beta of 0.1 against the S&P 500.
- Weak cash conversion. Free cash flow was -325% of net income over the last 12 months.
Price chart
- 1 day-7.4%
- 1 week-51.5%
- 1 month-89.6%
- This year-100.0%
- 1 year-100.0%
- S&P 500 this year+11.2%
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Third-party market data · may be delayed
At a glance
Profitability
- Revenue (TTM)
- $23.5M
- Operating margin
- 52.7%
- Net margin
- 11.2%
- EPS (TTM, diluted)
- $49.07
Growth
- Revenue growth
- −2.8%
- Change in growth rate
- −1.7 pts
- Share count change
- +312.6%
Cash
- Free cash flow (TTM)
- -$8.6M
- FCF margin
- -36.6%
News & updates
Company announcements, filed results and changes that matter to shareholders.
No recent updates are available for RUBI from the sources we follow. See filings →
The inputs used by the models below have passed source checks. Individual model values are available below and in the interactive valuator. Their differences are shown explicitly; the platform combined value and recommendation remain withheld.
Valuation models
We value Rubico Inc. as an operating company, with every model that fits that kind of business. Cost of equity 8.7%: the 10-year Treasury yield (4.9%) plus a beta of 0.84 times a 4.5% equity risk premium.
| Model | Value per share | In the combined value? |
|---|---|---|
| Price-to-earnings vs peers Earnings per share times peers' typical (harmonic-mean) price-to-earnings. | ~$9.6 ~$33–$100 | Left out: out of range vs price (5.10x) |
| Residual income Book value plus the present value of returns above the cost of equity, fading over ten years. | ~$210 ~$140–$320 | Left out: out of range vs price (109.05x) |
| Justified price-to-book Book value times (return on equity - growth) / (cost of equity - growth): steady-state returns. | ~$200 ~$170–$250 | Left out: out of range vs price (107.65x) |
| Revenue-to-maturity model Revenue grown to maturity with the cash margin moving to the industry's; for companies not yet profitable. | — | Does not apply: This model is withheld pending its input or assumption review. |
| Price-to-sales vs peers Sales per share times peers' typical price-to-sales; used only when earnings are negative. | — | Does not apply: This model is withheld pending its input or assumption review. |
| Combined value Individual source-checked model scenarios are available. The platform combined value and recommendation remain withheld. | — | Combined value withheld. Review the individual models and their assumptions. |
Different models fail in different ways, so where several apply we average them rather than trust one. Peer-based models compare Rubico Inc. with Marine Transportation in our coverage, using third-party market data. Model values are estimates under stated assumptions, updated as new filings arrive; not price targets or investment advice. How each model works.
Valuation multiples over time Market data may be delayed
| At fiscal year end | 2025 |
|---|---|
| Share price | $23220.49 |
| Market value | $1.3bn |
| + Net debt (− = net cash) | $80m |
| Enterprise value | $1.3bn |
| Multiples | |
| Price / sales | 53.2x |
| Price / earnings | n/m |
| Price / free cash flow | — |
| EV / EBITDA | — |
Moat
Not assessed: fewer than five years of comparable figures in the filings. AI disruption exposure for this industry: Medium.
Forecasts and guidance
Analysts' consensus
No analyst estimates are published for Rubico Inc.: too few analysts cover it.
Positioning
- Short interest
- — of tradable shares
- Days to cover
- 0.14 at average volume
- Short interest, 1 month
- +336% to October 15, 2026
- Held by institutions
- 1% of shares
- Held by insiders
- 0.0% of shares
Share-price performance
Market data may be delayedReturn and risk by year
| Calendar year | 2026 to date |
|---|---|
| Return | |
| RUBI | −100% |
| Industry peers (median) | +33% |
| S&P 500 | +11% |
| Months that ended higher | |
| RUBI | 0% |
| S&P 500 | 46% |
| Largest fall from a high during the year | |
| RUBI | −100% |
| S&P 500 | −9% |
Worst fall since August 4, 2025: 100% from August 5, 2025 to November 2, 2026. Getting back needed a 143367586% gain, and the shares have not yet recovered.
Price behaviour
- 52-week range
- $1.88 – $448567.71
- From 52-week high
- −100.0%
- vs 50-day average
- −89.3%
- vs 200-day average
- −99.9%
- Volatility (1 year)
- 164%
- Beta vs S&P 500
- 0.14
Rubico Inc. in five measures
Fundamentals
Where the money goes
Each dollar Rubico took in during FY2025, followed through to profit: what it cost to make, what went on running the business, and what was left after tax.
| Revenue | $23.5M | |
|---|---|---|
| Selling, general and admin | $1.3M | 5.4% of revenue |
| Other operating costs | $9.9M | 41.9% of revenue |
| Operating income | $12.4M | 52.7% of revenue |
| Interest and other | $9.8M | 41.5% of revenue |
| Net income | $2.6M | 11.2% of revenue |
Financial statements
| Fiscal year | 2023 Dec 2023 | 2024 Dec 2024 | 2025 Dec 2025 |
|---|---|---|---|
| Income | |||
| Revenue | 24 | 24 | 24 |
| Operating income | 12 | 12 | 12 |
| Net income | 7 | 6 | 3 |
| Diluted EPS | $126.89 | $113.74 | $49.07 |
| Growth (year on year) | |||
| Revenue | — | −1.1% | −2.8% |
| Operating income | — | −0.1% | −0.2% |
| Net income | — | −10.4% | −55.5% |
| Diluted EPS | — | −10.4% | −56.9% |
| Margins | |||
| Operating margin | 50.8% | 51.3% | 52.7% |
| Net margin | 27.1% | 24.6% | 11.2% |
| Free-cash-flow margin | 48.2% | 43.4% | −36.6% |
| Cash flow | |||
| Cash from operations | 12 | 10 | 11 |
| Capital spending | 0 | 0 | 20 |
| Free cash flow | 12 | 10 | −9 |
| Balance sheet | |||
| Cash | 3 | 1 | 4 |
| Total debt | 0 | 77 | 84 |
| Net debt (negative = net cash) | −3 | 76 | 80 |
| Diluted shares | — | — | — |
Financial health
- Short-term assets cover short-term liabilities $7m of assets due within a year against $10m of liabilities due within a year.
- Short-term assets cover long-term liabilities $7m short-term assets against $78m of longer-dated liabilities.
- More cash than debt $4m of cash against $82m of debt.
- Debt below 40% of shareholders' equity Debt is 180% of equity.
- Debt burden no higher than five years ago Five-year comparison not available. Not assessable.
- A year's operating cash flow covers at least 20% of debt $11m of operating cash flow against $82m of debt.
- Operating profit covers interest at least five times over Operating income of $12m against $8m of interest.
Dividends, buybacks and capital spending
- Diluted share count
- +312.6%
- year over year
- Days sales outstanding
- 16 days
- receivables vs revenue
Competitors: side by side with peers
| Last 12 months unless stated | RUBI | NCT | TORO | CISS | USEA | PXS | Median |
|---|---|---|---|---|---|---|---|
| Revenue, last 12 months | $24m | $25m | $21m | $35m | $38m | $39m | $329m |
| Revenue growth, last 12 months | −2.8% | 1.2% | −5.9% | −17.8% | −16.8% | −24.3% | 0.8% |
| Operating margin | 52.7% | −25.9% | −22.1% | 3.9% | −1.2% | 15.2% | 18.6% |
| Net margin | 11.2% | −42.0% | 28.1% | 30.1% | −16.4% | 5.1% | 13.3% |
| Cash from operations / revenue | 48.2% | −21.0% | −30.1% | 11.5% | 5.9% | 34.9% | 33.1% |
| Free-cash-flow margin | −36.6% | −26.1% | −346.8% | 11.0% | 4.1% | 15.5% | 14.2% |
| Stock pay / revenue | — | — | 17.0% | 1.1% | 1.3% | 0.7% | 0.7% |
| Change in share count | 312.6% | 3.4% | 2.8% | >999% | 1.8% | −1.0% | 0.5% |
Peer comparison
| Measure | Company | Peer median | Rank |
|---|---|---|---|
| Revenue growth Growth | -2.8% | 0.8% | 25 of 40 |
| Change in growth rate Growth | -1.7pp | +0.7pp | 24 of 40 |
| Operating margin Profitability | 52.7% | 19.8% | 6 of 40 |
| Net margin Profitability | 11.2% | 13.4% | 23 of 42 |
| Free-cash-flow margin Cash generation | -36.6% | 13.6% | 37 of 41 |
| Long-term debt as % of assets Balance sheet | 58.1% | 24.2% | 32 of 35 |
| Change in share count Balance sheet | 312.6% | 0.5% | 37 of 39 |
| Days sales outstanding Balance sheet | 16 days | 19 days | 12 of 33 |
Rank 1 = best in the group (for spending, debt and dilution, lower ranks first).
Who owns it
Funds buying and selling- Reported value
- $207,486
- Institutions reporting
- 2
- Positions opened / closed
- 2 / 0
| Manager | Value | Shares | Share of 13F value | Shares QoQ |
|---|---|---|---|---|
| Cable Car Capital, LP | $162,900 | 30K | 78.5% | — |
| UBS Group AG | $44,586 | 8K | 21.5% | — |
From Form 13F filings with the SEC ( quarterly data sets), as reported by each manager for June 30, 2026 and filed up to 45 days later. 13F reports cover long US-listed positions of managers above $100M only, so this is not Rubico Inc.'s complete shareholder register. Values are as reported by the filers .
Insider trading activity
Full insider history and chart| Insider | Date | Trade | Shares | Price | Value |
|---|---|---|---|---|---|
| Hrt Financial Lp 10% owner | June 12, 2026 | Sell | 551,020 | $0.95 | $523,469 |
| Hrt Financial Lp 10% owner | June 11, 2026 | Buy | 484,963 | $0.81 | $392,820 |
From insiders' Form 4 filings with the SEC. Excludes awards, option exercises and shares withheld for tax. "Pre-set plan" means the filing marks the trade as made under a Rule 10b5-1 plan. See every insider trade since five years ago, on a price chart.
Earnings dates and SEC filings
Data status
| Data | Last updated | Source |
|---|---|---|
| Share price | Exchange closing prices | |
| News and updates | Company releases and SEC 8-K filings | |
| Analyst estimates | Aggregated analyst estimates | |
| Valuation and scores | Our models, from the filed figures |
Rubico Inc. in brief
- What does Rubico Inc. do?
- Rubico Inc. is a US-listed company in the marine transportation industry. Its financial year ends in December.
- What is Rubico Inc.'s stock ticker?
- Rubico Inc. trades under the ticker RUBI on Nasdaq. This page brings together its financial statements, valuation models, ownership and recent company updates.
- What is Rubico Inc.'s revenue, and how fast is it growing?
- Over its most recent trailing twelve months, Rubico Inc. reported revenue of $23.5M, 2.8% lower than a year earlier, according to its SEC filings.
- What is Rubico Inc.'s free cash flow?
- Rubico Inc.'s free-cash-flow margin is -36.6% of revenue over the trailing twelve months, ranking 37 of the 41 marine transportation companies we cover.
- What is Rubico Inc.'s market cap?
- On December 31, 2025, Rubico Inc.'s market capitalisation was about $1.3B, with a price-to-earnings ratio of 473.3 and net debt of $79.7M. Market figures come from third-party market data and may be delayed.
- How much debt does Rubico Inc. have?
- Rubico Inc.'s debt-to-equity ratio is 179.7%, from its latest balance sheet. The financial health section below sets out its other solvency checks.
- Who are Rubico Inc.'s competitors?
- In our Marine Transportation peer group, the companies closest to Rubico Inc. are Intercont (cayman) Ltd, Toro Corp., C3is Inc., United Maritime Corp and Pyxis Tankers Inc. The side-by-side comparison below sets their revenue, margins and growth against Rubico Inc.'s.
- Are insiders buying or selling Rubico Inc. stock?
- Over the last 12 months, Rubico Inc.'s directors and officers reported 1 open-market purchases and 1 sales on Form 4. The insider trading page charts every trade.
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