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Side-by-side financial comparison of AEHR TEST SYSTEMS (AEHR) and DATA I/O CORP (DAIO). Click either name above to swap in a different company.
AEHR TEST SYSTEMS is the larger business by last-quarter revenue ($9.9M vs $4.0M, roughly 2.5× DATA I/O CORP). AEHR TEST SYSTEMS runs the higher net margin — -32.7% vs -69.0%, a 36.4% gap on every dollar of revenue. On growth, DATA I/O CORP posted the faster year-over-year revenue change (-23.2% vs -26.5%). AEHR TEST SYSTEMS produced more free cash flow last quarter ($-1.6M vs $-1.9M). Over the past eight quarters, AEHR TEST SYSTEMS's revenue compounded faster (14.3% CAGR vs -19.2%).
Aehr Test Systems designs, manufactures and sells advanced test and burn-in systems for the global semiconductor industry. Its products help semiconductor manufacturers, packaging firms and chip designers validate reliability of logic, memory and power semiconductor devices, serving markets across North America, Asia and Europe.
Data I/O Corporation is a provider of manual and automated data programming and security provisioning systems for flash memory, microcontrollers, and logic devices. Founded in 1969 and incorporated in 1972, the company developed equipment that allowed electronic designers to program non-volatile semiconductor devices with data stored on punched cards or ASCII-encoded (eight-level) punched paper tape. These products were used for the design and manufacturing of systems used in industries such ...
AEHR vs DAIO — Head-to-Head
Income Statement — Q4 2025 vs Q4 2025
| Metric | | |
|---|---|---|
| Revenue | $9.9M | $4.0M |
| Net Profit | $-3.2M | $-2.8M |
| Gross Margin | 25.7% | 43.0% |
| Operating Margin | -47.0% | -62.8% |
| Net Margin | -32.7% | -69.0% |
| Revenue YoY | -26.5% | -23.2% |
| Net Profit YoY | -214.2% | -132.7% |
| EPS (diluted) | $-0.11 | $-0.29 |
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 | $9.9M | $4.0M | ||
| Q3 25 | $11.0M | $5.4M | ||
| Q2 25 | $14.1M | $5.9M | ||
| Q1 25 | $18.3M | $6.2M | ||
| Q4 24 | $13.5M | $5.2M | ||
| Q3 24 | $13.1M | $5.4M | ||
| Q2 24 | $16.6M | $5.1M | ||
| Q1 24 | $7.6M | $6.1M |
| Q4 25 | $-3.2M | $-2.8M | ||
| Q3 25 | $-2.1M | $-1.4M | ||
| Q2 25 | $-2.9M | $-742.0K | ||
| Q1 25 | $-643.0K | $-382.0K | ||
| Q4 24 | $-1.0M | $-1.2M | ||
| Q3 24 | $660.0K | $-307.0K | ||
| Q2 24 | $23.9M | $-797.0K | ||
| Q1 24 | $-1.5M | $-807.0K |
| Q4 25 | 25.7% | 43.0% | ||
| Q3 25 | 33.9% | 50.7% | ||
| Q2 25 | 30.3% | 49.8% | ||
| Q1 25 | 39.2% | 51.6% | ||
| Q4 24 | 40.1% | 52.2% | ||
| Q3 24 | 54.0% | 53.9% | ||
| Q2 24 | 50.9% | 54.5% | ||
| Q1 24 | 41.7% | 52.8% |
| Q4 25 | -47.0% | -62.8% | ||
| Q3 25 | -37.1% | -25.8% | ||
| Q2 25 | -22.7% | -14.2% | ||
| Q1 25 | -6.1% | -6.1% | ||
| Q4 24 | -11.2% | -24.8% | ||
| Q3 24 | 1.2% | -6.0% | ||
| Q2 24 | 15.3% | -11.2% | ||
| Q1 24 | -27.1% | -14.1% |
| Q4 25 | -32.7% | -69.0% | ||
| Q3 25 | -19.0% | -25.3% | ||
| Q2 25 | -20.6% | -12.5% | ||
| Q1 25 | -3.5% | -6.2% | ||
| Q4 24 | -7.6% | -22.8% | ||
| Q3 24 | 5.0% | -5.7% | ||
| Q2 24 | 143.8% | -15.7% | ||
| Q1 24 | -19.4% | -13.2% |
| Q4 25 | $-0.11 | $-0.29 | ||
| Q3 25 | $-0.07 | $-0.15 | ||
| Q2 25 | $-0.10 | $-0.08 | ||
| Q1 25 | $-0.02 | $-0.04 | ||
| Q4 24 | $-0.03 | $-0.13 | ||
| Q3 24 | $0.02 | $-0.03 | ||
| Q2 24 | $0.81 | $-0.09 | ||
| Q1 24 | $-0.05 | $-0.09 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $30.8M | — |
| Total DebtLower is stronger | — | — |
| Stockholders' EquityBook value | $130.8M | $13.5M |
| Total Assets | $148.7M | $20.2M |
| Debt / EquityLower = less leverage | — | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $30.8M | — | ||
| Q3 25 | $22.7M | — | ||
| Q2 25 | $24.5M | — | ||
| Q1 25 | $29.4M | — | ||
| Q4 24 | $32.2M | — | ||
| Q3 24 | $37.8M | — | ||
| Q2 24 | $49.2M | — | ||
| Q1 24 | $47.6M | — |
| Q4 25 | $130.8M | $13.5M | ||
| Q3 25 | $122.4M | $16.0M | ||
| Q2 25 | $122.9M | $17.2M | ||
| Q1 25 | $124.2M | $17.5M | ||
| Q4 24 | $123.2M | $17.6M | ||
| Q3 24 | $122.5M | $19.2M | ||
| Q2 24 | $111.6M | $18.9M | ||
| Q1 24 | $86.5M | $19.6M |
| Q4 25 | $148.7M | $20.2M | ||
| Q3 25 | $144.1M | $22.7M | ||
| Q2 25 | $148.5M | $24.1M | ||
| Q1 25 | $145.6M | $24.5M | ||
| Q4 24 | $142.3M | $25.0M | ||
| Q3 24 | $145.9M | $24.8M | ||
| Q2 24 | $127.9M | $24.1M | ||
| Q1 24 | $101.6M | $26.2M |
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 | $-1.2M | $-1.7M |
| Free Cash FlowOCF − Capex | $-1.6M | $-1.9M |
| FCF MarginFCF / Revenue | -16.6% | -46.6% |
| Capex IntensityCapex / Revenue | 4.7% | 5.2% |
| Cash ConversionOCF / Net Profit | — | — |
| TTM Free Cash FlowTrailing 4 quarters | $-11.7M | $-2.8M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $-1.2M | $-1.7M | ||
| Q3 25 | $-282.0K | $-343.0K | ||
| Q2 25 | $-2.3M | $-342.0K | ||
| Q1 25 | $-1.6M | $109.0K | ||
| Q4 24 | $-5.9M | $-1.6M | ||
| Q3 24 | $2.4M | $839.0K | ||
| Q2 24 | $1.2M | $-243.0K | ||
| Q1 24 | $-2.8M | $-41.0K |
| Q4 25 | $-1.6M | $-1.9M | ||
| Q3 25 | $-1.7M | $-348.0K | ||
| Q2 25 | $-5.1M | $-633.0K | ||
| Q1 25 | $-3.3M | $53.0K | ||
| Q4 24 | $-6.2M | $-1.7M | ||
| Q3 24 | $2.2M | $724.0K | ||
| Q2 24 | $1.2M | $-268.0K | ||
| Q1 24 | $-3.1M | $-180.0K |
| Q4 25 | -16.6% | -46.6% | ||
| Q3 25 | -15.3% | -6.5% | ||
| Q2 25 | -36.3% | -10.6% | ||
| Q1 25 | -17.8% | 0.9% | ||
| Q4 24 | -46.0% | -33.5% | ||
| Q3 24 | 16.6% | 13.4% | ||
| Q2 24 | 7.1% | -5.3% | ||
| Q1 24 | -40.8% | -3.0% |
| Q4 25 | 4.7% | 5.2% | ||
| Q3 25 | 12.7% | 0.1% | ||
| Q2 25 | 20.0% | 4.9% | ||
| Q1 25 | 9.0% | 0.9% | ||
| Q4 24 | 2.4% | 3.6% | ||
| Q3 24 | 1.5% | 2.1% | ||
| Q2 24 | 0.3% | 0.5% | ||
| Q1 24 | 3.5% | 2.3% |
| Q4 25 | — | — | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | 3.61× | — | ||
| Q2 24 | 0.05× | — | ||
| Q1 24 | — | — |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
AEHR
| Systems | $5.0M | 50% |
| Contactors | $3.4M | 35% |
| Services | $1.5M | 15% |
DAIO
Segment breakdown not available.
