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Side-by-side financial comparison of KIRBY CORP (KEX) and Martin Marietta Materials (MLM). Click either name above to swap in a different company.
Martin Marietta Materials is the larger business by last-quarter revenue ($1.1B vs $851.8M, roughly 1.3× KIRBY CORP). Martin Marietta Materials runs the higher net margin — 24.5% vs 10.8%, a 13.7% gap on every dollar of revenue. On growth, KIRBY CORP posted the faster year-over-year revenue change (6.2% vs -30.1%). Martin Marietta Materials produced more free cash flow last quarter ($424.0M vs $265.2M). Over the past eight quarters, KIRBY CORP's revenue compounded faster (2.7% CAGR vs -4.5%).
Kirby Corporation, headquartered in Houston, Texas, is the largest tank barge operator in the United States, transporting bulk liquid products throughout the Mississippi River System, on the Gulf Intracoastal Waterway, along all three U.S. Coasts, and in Alaska and Hawaii. Products transported by Kirby include petrochemicals, black oil, refined petroleum products, and agricultural chemical products by tank barge. Kirby also owns and operates eight ocean-going barge and tug units transporting ...
Martin Marietta Materials, Inc. is an American company and a supplier of aggregates and heavy building materials, with operations spanning 26 states, Canada, and the Caribbean. In particular, Martin Marietta Materials supplies resources for the construction of roads, sidewalks, and foundations.
KEX vs MLM — Head-to-Head
Income Statement — Q4 FY2025 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $851.8M | $1.1B |
| Net Profit | $91.8M | $279.0M |
| Gross Margin | — | 35.0% |
| Operating Margin | 15.2% | 24.6% |
| Net Margin | 10.8% | 24.5% |
| Revenue YoY | 6.2% | -30.1% |
| Net Profit YoY | 114.4% | -4.8% |
| EPS (diluted) | $1.68 | $4.59 |
Green = leading value per metric. Periods may differ when fiscal calendars don't align.
8-Quarter Revenue & Profit Trend
Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.
| Q4 25 | $851.8M | $1.1B | ||
| Q3 25 | $871.2M | $1.8B | ||
| Q2 25 | $855.5M | $1.8B | ||
| Q1 25 | $785.7M | $1.4B | ||
| Q4 24 | $802.3M | $1.6B | ||
| Q3 24 | $831.1M | $1.9B | ||
| Q2 24 | $824.4M | $1.8B | ||
| Q1 24 | $808.0M | $1.3B |
| Q4 25 | $91.8M | $279.0M | ||
| Q3 25 | $92.5M | $414.0M | ||
| Q2 25 | $94.3M | $328.0M | ||
| Q1 25 | $76.0M | $116.0M | ||
| Q4 24 | $42.8M | $293.0M | ||
| Q3 24 | $90.0M | $363.0M | ||
| Q2 24 | $83.9M | $294.0M | ||
| Q1 24 | $70.1M | $1.0B |
| Q4 25 | — | 35.0% | ||
| Q3 25 | — | 33.1% | ||
| Q2 25 | — | 30.0% | ||
| Q1 25 | — | 24.8% | ||
| Q4 24 | — | 30.0% | ||
| Q3 24 | — | 31.7% | ||
| Q2 24 | — | 29.3% | ||
| Q1 24 | — | 21.7% |
| Q4 25 | 15.2% | 24.6% | ||
| Q3 25 | 14.8% | 27.4% | ||
| Q2 25 | 15.4% | 25.3% | ||
| Q1 25 | 13.4% | 14.3% | ||
| Q4 24 | 6.3% | 24.4% | ||
| Q3 24 | 15.3% | 25.9% | ||
| Q2 24 | 14.6% | 22.6% | ||
| Q1 24 | 12.6% | — |
| Q4 25 | 10.8% | 24.5% | ||
| Q3 25 | 10.6% | 22.4% | ||
| Q2 25 | 11.0% | 18.1% | ||
| Q1 25 | 9.7% | 8.6% | ||
| Q4 24 | 5.3% | 18.0% | ||
| Q3 24 | 10.8% | 19.2% | ||
| Q2 24 | 10.2% | 16.7% | ||
| Q1 24 | 8.7% | 83.5% |
| Q4 25 | $1.68 | $4.59 | ||
| Q3 25 | $1.65 | $6.85 | ||
| Q2 25 | $1.67 | $5.43 | ||
| Q1 25 | $1.33 | $1.90 | ||
| Q4 24 | $0.74 | $4.87 | ||
| Q3 24 | $1.55 | $5.91 | ||
| Q2 24 | $1.43 | $4.76 | ||
| Q1 24 | $1.19 | $16.87 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $78.8M | $67.0M |
| Total DebtLower is stronger | $919.3M | $5.3B |
| Stockholders' EquityBook value | $3.4B | $10.0B |
| Total Assets | $6.0B | $18.7B |
| Debt / EquityLower = less leverage | 0.27× | 0.53× |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $78.8M | $67.0M | ||
| Q3 25 | $47.0M | $57.0M | ||
| Q2 25 | $68.4M | $225.0M | ||
| Q1 25 | $51.1M | $101.0M | ||
| Q4 24 | $74.4M | $670.0M | ||
| Q3 24 | $67.1M | $52.0M | ||
| Q2 24 | $53.5M | $109.0M | ||
| Q1 24 | $75.2M | $2.6B |
| Q4 25 | $919.3M | $5.3B | ||
| Q3 25 | $1.0B | $5.5B | ||
| Q2 25 | $1.1B | $5.4B | ||
| Q1 25 | $1.1B | $5.4B | ||
| Q4 24 | $874.9M | $5.4B | ||
| Q3 24 | $978.6M | $4.0B | ||
| Q2 24 | $1.0B | $4.3B | ||
| Q1 24 | $1.1B | $4.3B |
| Q4 25 | $3.4B | $10.0B | ||
| Q3 25 | $3.4B | $9.7B | ||
| Q2 25 | $3.4B | $9.4B | ||
| Q1 25 | $3.3B | $9.1B | ||
| Q4 24 | $3.4B | $9.5B | ||
| Q3 24 | $3.3B | $9.2B | ||
| Q2 24 | $3.3B | $8.8B | ||
| Q1 24 | $3.2B | $8.9B |
| Q4 25 | $6.0B | $18.7B | ||
| Q3 25 | $6.1B | $18.7B | ||
| Q2 25 | $6.1B | $18.1B | ||
| Q1 25 | $6.0B | $17.7B | ||
| Q4 24 | $5.9B | $18.2B | ||
| Q3 24 | $5.9B | $16.5B | ||
| Q2 24 | $5.9B | $16.3B | ||
| Q1 24 | $5.8B | $16.2B |
| Q4 25 | 0.27× | 0.53× | ||
| Q3 25 | 0.31× | 0.57× | ||
| Q2 25 | 0.33× | 0.58× | ||
| Q1 25 | 0.33× | 0.60× | ||
| Q4 24 | 0.26× | 0.57× | ||
| Q3 24 | 0.30× | 0.44× | ||
| Q2 24 | 0.32× | 0.49× | ||
| Q1 24 | 0.33× | 0.49× |
Cash Flow & Capital Efficiency
How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.
| Metric | | |
|---|---|---|
| Operating Cash FlowLast quarter | $312.2M | $629.0M |
| Free Cash FlowOCF − Capex | $265.2M | $424.0M |
| FCF MarginFCF / Revenue | 31.1% | 37.2% |
| Capex IntensityCapex / Revenue | 5.5% | 18.0% |
| Cash ConversionOCF / Net Profit | 3.40× | 2.25× |
| TTM Free Cash FlowTrailing 4 quarters | $405.7M | $978.0M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $312.2M | $629.0M | ||
| Q3 25 | $227.5M | $551.0M | ||
| Q2 25 | $93.9M | $387.0M | ||
| Q1 25 | $36.5M | $218.0M | ||
| Q4 24 | $247.4M | $686.0M | ||
| Q3 24 | $206.5M | $600.0M | ||
| Q2 24 | $179.3M | $1.0M | ||
| Q1 24 | $123.3M | $172.0M |
| Q4 25 | $265.2M | $424.0M | ||
| Q3 25 | $160.3M | $361.0M | ||
| Q2 25 | $22.4M | $208.0M | ||
| Q1 25 | $-42.1M | $-15.0M | ||
| Q4 24 | $150.7M | $453.0M | ||
| Q3 24 | $130.1M | $317.0M | ||
| Q2 24 | $90.8M | $-138.0M | ||
| Q1 24 | $42.2M | $-28.0M |
| Q4 25 | 31.1% | 37.2% | ||
| Q3 25 | 18.4% | 19.6% | ||
| Q2 25 | 2.6% | 11.5% | ||
| Q1 25 | -5.4% | -1.1% | ||
| Q4 24 | 18.8% | 27.8% | ||
| Q3 24 | 15.7% | 16.8% | ||
| Q2 24 | 11.0% | -7.8% | ||
| Q1 24 | 5.2% | -2.2% |
| Q4 25 | 5.5% | 18.0% | ||
| Q3 25 | 7.7% | 10.3% | ||
| Q2 25 | 8.4% | 9.9% | ||
| Q1 25 | 10.0% | 17.2% | ||
| Q4 24 | 12.0% | 14.3% | ||
| Q3 24 | 9.2% | 15.0% | ||
| Q2 24 | 10.7% | 7.9% | ||
| Q1 24 | 10.0% | 16.0% |
| Q4 25 | 3.40× | 2.25× | ||
| Q3 25 | 2.46× | 1.33× | ||
| Q2 25 | 1.00× | 1.18× | ||
| Q1 25 | 0.48× | 1.88× | ||
| Q4 24 | 5.78× | 2.34× | ||
| Q3 24 | 2.30× | 1.65× | ||
| Q2 24 | 2.14× | 0.00× | ||
| Q1 24 | 1.76× | 0.16× |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
KEX
| Inland Transportation | $379.2M | 45% |
| Power Generation | $191.1M | 22% |
| Commercial And Industrial | $149.4M | 18% |
| Coastal Transportation | $102.5M | 12% |
| Oil And Gas | $29.6M | 3% |
MLM
| Building Materials Business East Group | $774.0M | 68% |
| Building Materials Business West Group | $233.0M | 20% |
| Services | $88.0M | 8% |
| Other | $45.0M | 4% |
