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Side-by-side financial comparison of DIODES INC (DIOD) and Koppers Holdings Inc. (KOP). Click either name above to swap in a different company.
Koppers Holdings Inc. is the larger business by last-quarter revenue ($432.7M vs $391.6M, roughly 1.1× DIODES INC). Koppers Holdings Inc. runs the higher net margin — 6.9% vs 2.6%, a 4.3% gap on every dollar of revenue. On growth, DIODES INC posted the faster year-over-year revenue change (15.4% vs -9.3%). Koppers Holdings Inc. produced more free cash flow last quarter ($28.5M vs $12.4M). Over the past eight quarters, DIODES INC's revenue compounded faster (13.9% CAGR vs -6.7%).
Diodes Incorporated is a global semiconductor manufacturer that designs, produces and supplies discrete, analog and mixed-signal semiconductor products. Its solutions serve key end markets including automotive, industrial, consumer electronics, personal computing and communications infrastructure, with a worldwide customer base.
Koppers is a global chemical and materials company based in Pittsburgh, Pennsylvania, United States. Its headquarters is an art-deco 1920s skyscraper, the Koppers Tower.
DIOD vs KOP — Head-to-Head
Income Statement — Q4 FY2025 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $391.6M | $432.7M |
| Net Profit | $10.2M | $29.7M |
| Gross Margin | 31.1% | 25.6% |
| Operating Margin | 3.4% | 11.5% |
| Net Margin | 2.6% | 6.9% |
| Revenue YoY | 15.4% | -9.3% |
| Net Profit YoY | 23.8% | 391.2% |
| EPS (diluted) | $0.23 | $1.44 |
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 | $391.6M | $432.7M | ||
| Q3 25 | $392.2M | $485.3M | ||
| Q2 25 | $366.2M | $504.8M | ||
| Q1 25 | $332.1M | $456.5M | ||
| Q4 24 | $339.3M | $477.0M | ||
| Q3 24 | $350.1M | $554.3M | ||
| Q2 24 | $319.8M | $563.2M | ||
| Q1 24 | $302.0M | $497.6M |
| Q4 25 | $10.2M | $29.7M | ||
| Q3 25 | $14.3M | $23.8M | ||
| Q2 25 | $46.1M | $16.4M | ||
| Q1 25 | $-4.4M | $-13.9M | ||
| Q4 24 | $8.2M | $-10.2M | ||
| Q3 24 | $13.7M | $22.8M | ||
| Q2 24 | $8.0M | $26.8M | ||
| Q1 24 | $14.0M | $13.0M |
| Q4 25 | 31.1% | 25.6% | ||
| Q3 25 | 30.7% | 24.1% | ||
| Q2 25 | 31.5% | 22.6% | ||
| Q1 25 | 31.5% | 23.2% | ||
| Q4 24 | 32.7% | 17.5% | ||
| Q3 24 | 33.7% | 21.9% | ||
| Q2 24 | 33.6% | 21.6% | ||
| Q1 24 | 33.0% | 19.3% |
| Q4 25 | 3.4% | 11.5% | ||
| Q3 25 | 3.0% | 10.7% | ||
| Q2 25 | 2.6% | 7.7% | ||
| Q1 25 | 0.4% | 5.9% | ||
| Q4 24 | 3.5% | 1.3% | ||
| Q3 24 | 6.2% | 9.0% | ||
| Q2 24 | 1.2% | 10.2% | ||
| Q1 24 | 4.3% | 7.0% |
| Q4 25 | 2.6% | 6.9% | ||
| Q3 25 | 3.6% | 4.9% | ||
| Q2 25 | 12.6% | 3.2% | ||
| Q1 25 | -1.3% | -3.0% | ||
| Q4 24 | 2.4% | -2.1% | ||
| Q3 24 | 3.9% | 4.1% | ||
| Q2 24 | 2.5% | 4.8% | ||
| Q1 24 | 4.6% | 2.6% |
| Q4 25 | $0.23 | $1.44 | ||
| Q3 25 | $0.31 | $1.17 | ||
| Q2 25 | $0.99 | $0.81 | ||
| Q1 25 | $-0.10 | $-0.68 | ||
| Q4 24 | $0.18 | $-0.47 | ||
| Q3 24 | $0.30 | $1.09 | ||
| Q2 24 | $0.17 | $1.25 | ||
| Q1 24 | $0.30 | $0.59 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $377.0M | — |
| Total DebtLower is stronger | $25.7M | $928.3M |
| Stockholders' EquityBook value | $1.9B | $574.0M |
| Total Assets | $2.4B | $1.9B |
| Debt / EquityLower = less leverage | 0.01× | 1.62× |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $377.0M | — | ||
| Q3 25 | $386.4M | — | ||
| Q2 25 | $327.3M | — | ||
| Q1 25 | $343.9M | — | ||
| Q4 24 | $316.1M | — | ||
| Q3 24 | $319.3M | — | ||
| Q2 24 | $273.9M | — | ||
| Q1 24 | $276.0M | — |
| Q4 25 | $25.7M | $928.3M | ||
| Q3 25 | $24.9M | $932.9M | ||
| Q2 25 | $26.4M | $977.5M | ||
| Q1 25 | $20.5M | $989.0M | ||
| Q4 24 | $20.7M | $939.5M | ||
| Q3 24 | $22.2M | $989.4M | ||
| Q2 24 | $20.3M | $1.0B | ||
| Q1 24 | $20.9M | $877.6M |
| Q4 25 | $1.9B | $574.0M | ||
| Q3 25 | $1.9B | $545.6M | ||
| Q2 25 | $1.9B | $526.8M | ||
| Q1 25 | $1.8B | $498.0M | ||
| Q4 24 | $1.8B | $488.7M | ||
| Q3 24 | $1.8B | $532.3M | ||
| Q2 24 | $1.8B | $509.2M | ||
| Q1 24 | $1.7B | $505.8M |
| Q4 25 | $2.4B | $1.9B | ||
| Q3 25 | $2.5B | $1.9B | ||
| Q2 25 | $2.5B | $1.9B | ||
| Q1 25 | $2.4B | $1.9B | ||
| Q4 24 | $2.4B | $1.9B | ||
| Q3 24 | $2.4B | $2.0B | ||
| Q2 24 | $2.4B | $1.9B | ||
| Q1 24 | $2.4B | $1.8B |
| Q4 25 | 0.01× | 1.62× | ||
| Q3 25 | 0.01× | 1.71× | ||
| Q2 25 | 0.01× | 1.86× | ||
| Q1 25 | 0.01× | 1.99× | ||
| Q4 24 | 0.01× | 1.92× | ||
| Q3 24 | 0.01× | 1.86× | ||
| Q2 24 | 0.01× | 1.97× | ||
| Q1 24 | 0.01× | 1.74× |
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 | $38.1M | $45.1M |
| Free Cash FlowOCF − Capex | $12.4M | $28.5M |
| FCF MarginFCF / Revenue | 3.2% | 6.6% |
| Capex IntensityCapex / Revenue | 6.6% | 3.8% |
| Cash ConversionOCF / Net Profit | 3.74× | 1.52× |
| TTM Free Cash FlowTrailing 4 quarters | $137.2M | $67.5M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $38.1M | $45.1M | ||
| Q3 25 | $79.1M | $49.6M | ||
| Q2 25 | $41.5M | $50.5M | ||
| Q1 25 | $56.7M | $-22.7M | ||
| Q4 24 | $81.8M | $74.7M | ||
| Q3 24 | $54.4M | $29.8M | ||
| Q2 24 | $14.4M | $27.2M | ||
| Q1 24 | $-31.1M | $-12.3M |
| Q4 25 | $12.4M | $28.5M | ||
| Q3 25 | $62.8M | $37.6M | ||
| Q2 25 | $21.1M | $38.4M | ||
| Q1 25 | $40.8M | $-37.0M | ||
| Q4 24 | $62.1M | $56.1M | ||
| Q3 24 | $39.4M | $14.4M | ||
| Q2 24 | $-3.5M | $10.1M | ||
| Q1 24 | $-51.5M | $-38.6M |
| Q4 25 | 3.2% | 6.6% | ||
| Q3 25 | 16.0% | 7.7% | ||
| Q2 25 | 5.8% | 7.6% | ||
| Q1 25 | 12.3% | -8.1% | ||
| Q4 24 | 18.3% | 11.8% | ||
| Q3 24 | 11.2% | 2.6% | ||
| Q2 24 | -1.1% | 1.8% | ||
| Q1 24 | -17.1% | -7.8% |
| Q4 25 | 6.6% | 3.8% | ||
| Q3 25 | 4.2% | 2.5% | ||
| Q2 25 | 5.6% | 2.4% | ||
| Q1 25 | 4.8% | 3.1% | ||
| Q4 24 | 5.8% | 3.9% | ||
| Q3 24 | 4.3% | 2.8% | ||
| Q2 24 | 5.6% | 3.0% | ||
| Q1 24 | 6.7% | 5.3% |
| Q4 25 | 3.74× | 1.52× | ||
| Q3 25 | 5.54× | 2.08× | ||
| Q2 25 | 0.90× | 3.08× | ||
| Q1 25 | — | — | ||
| Q4 24 | 9.93× | — | ||
| Q3 24 | 3.95× | 1.31× | ||
| Q2 24 | 1.80× | 1.01× | ||
| Q1 24 | -2.22× | -0.95× |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
DIOD
| Distributor | $253.1M | 65% |
| Direct Sales | $138.5M | 35% |
KOP
| Other | $127.8M | 30% |
| Railroad Treated Products | $119.0M | 28% |
| Utility Poles | $79.8M | 18% |
| Pitch And Related Products | $74.1M | 17% |
| Carbon Black Feedstock And Distillates | $14.4M | 3% |
| Railroad Infrastructure Products And Services | $9.9M | 2% |
| Phthalic Anhydride Naphthalene And Other Chemicals | $7.7M | 2% |
