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Side-by-side financial comparison of Ascent Solar Technologies, Inc. (ASTI) and PROTHENA CORP PUBLIC LTD CO (PRTA). Click either name above to swap in a different company.
PROTHENA CORP PUBLIC LTD CO is the larger business by last-quarter revenue ($21.0K vs $15.6K, roughly 1.3× Ascent Solar Technologies, Inc.). Over the past eight quarters, Ascent Solar Technologies, Inc.'s revenue compounded faster (67.1% CAGR vs -35.2%).
Ascent Solar Technologies, Inc. is a publicly traded photovoltaic (PV) company located in Thornton, Colorado. Its primary product is a flexible CIGS solar cell on a plastic substrate.
Prothena Corporation plc is a late-stage clinical biotechnology firm focused on developing and commercializing innovative antibody therapies for neurodegenerative disorders, rare diseases and immune-related conditions. Its core pipeline targets unmet medical needs including amyloidosis, Parkinson's and Alzheimer's, serving key markets across North America, Europe and the Asia-Pacific.
ASTI vs PRTA — Head-to-Head
Income Statement — Q4 FY2025 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $15.6K | $21.0K |
| Net Profit | — | — |
| Gross Margin | — | — |
| Operating Margin | — | — |
| Net Margin | — | — |
| Revenue YoY | — | -99.0% |
| Net Profit YoY | -42.3% | 62.7% |
| EPS (diluted) | — | — |
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 | $15.6K | $21.0K | ||
| Q3 25 | $28.5K | $2.4M | ||
| Q2 25 | $17.0K | $4.4M | ||
| Q1 25 | $15.6K | $2.8M | ||
| Q4 24 | $0 | $2.1M | ||
| Q3 24 | $8.6K | $970.0K | ||
| Q2 24 | $27.7K | $132.0M | ||
| Q1 24 | $5.6K | $50.0K |
| Q4 25 | — | — | ||
| Q3 25 | $-2.0M | $-36.5M | ||
| Q2 25 | $-2.1M | $-125.8M | ||
| Q1 25 | $-1.7M | $-60.2M | ||
| Q4 24 | $-1.5M | — | ||
| Q3 24 | $-1.7M | $-59.0M | ||
| Q2 24 | $-3.4M | $66.9M | ||
| Q1 24 | $-2.5M | $-72.2M |
| Q4 25 | — | — | ||
| Q3 25 | -6892.3% | -1666.3% | ||
| Q2 25 | -12316.8% | -1914.4% | ||
| Q1 25 | -11177.9% | -2319.0% | ||
| Q4 24 | — | — | ||
| Q3 24 | -26443.2% | -6857.0% | ||
| Q2 24 | -8490.7% | 44.2% | ||
| Q1 24 | -44206.0% | -163056.0% |
| Q4 25 | — | — | ||
| Q3 25 | -7081.3% | -1513.1% | ||
| Q2 25 | -12177.3% | -2845.4% | ||
| Q1 25 | -10716.2% | -2128.5% | ||
| Q4 24 | — | — | ||
| Q3 24 | -19776.2% | -6082.6% | ||
| Q2 24 | -12420.5% | 50.7% | ||
| Q1 24 | -45316.8% | -144478.0% |
| Q4 25 | — | — | ||
| Q3 25 | $-0.62 | $-0.68 | ||
| Q2 25 | $-1.17 | $-2.34 | ||
| Q1 25 | $-1.13 | $-1.12 | ||
| Q4 24 | $50.75 | — | ||
| Q3 24 | $-1.37 | $-1.10 | ||
| Q2 24 | $-6.76 | $1.22 | ||
| Q1 24 | $-53.00 | $-1.34 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $2.8M | $307.5M |
| Total DebtLower is stronger | — | — |
| Stockholders' EquityBook value | $3.3M | $280.5M |
| Total Assets | $6.3M | $326.8M |
| Debt / EquityLower = less leverage | — | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $2.8M | $307.5M | ||
| Q3 25 | $2.1M | $330.8M | ||
| Q2 25 | $3.0M | $371.4M | ||
| Q1 25 | $2.3M | $417.9M | ||
| Q4 24 | $3.2M | $471.4M | ||
| Q3 24 | $3.7M | $519.3M | ||
| Q2 24 | $5.8M | $564.1M | ||
| Q1 24 | $187.5K | $546.5M |
| Q4 25 | $3.3M | $280.5M | ||
| Q3 25 | $2.7M | $295.0M | ||
| Q2 25 | $3.4M | $324.3M | ||
| Q1 25 | $2.6M | $437.7M | ||
| Q4 24 | $3.4M | $486.9M | ||
| Q3 24 | $-3.3M | $534.4M | ||
| Q2 24 | $4.2M | $581.9M | ||
| Q1 24 | $-2.6M | $502.4M |
| Q4 25 | $6.3M | $326.8M | ||
| Q3 25 | $5.8M | $352.6M | ||
| Q2 25 | $6.8M | $399.1M | ||
| Q1 25 | $6.2M | $495.3M | ||
| Q4 24 | $7.1M | $547.1M | ||
| Q3 24 | $7.9M | $595.3M | ||
| Q2 24 | $10.2M | $645.6M | ||
| Q1 24 | $5.0M | $623.2M |
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 | $-6.9M | $-163.6M |
| Free Cash FlowOCF − Capex | $-6.9M | — |
| FCF MarginFCF / Revenue | -44350.5% | — |
| Capex IntensityCapex / Revenue | 204.7% | — |
| Cash ConversionOCF / Net Profit | — | — |
| TTM Free Cash FlowTrailing 4 quarters | $-12.1M | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $-6.9M | $-163.6M | ||
| Q3 25 | $-1.7M | $-40.6M | ||
| Q2 25 | $-1.8M | $-46.3M | ||
| Q1 25 | $-1.6M | $-53.4M | ||
| Q4 24 | $-1.5M | $-150.1M | ||
| Q3 24 | $-2.1M | $-45.2M | ||
| Q2 24 | $-3.6M | $16.0M | ||
| Q1 24 | $-1.2M | $-73.1M |
| Q4 25 | $-6.9M | — | ||
| Q3 25 | $-1.8M | — | ||
| Q2 25 | $-1.8M | — | ||
| Q1 25 | $-1.6M | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
| Q4 25 | -44350.5% | — | ||
| Q3 25 | -6182.5% | — | ||
| Q2 25 | -10692.4% | — | ||
| Q1 25 | -9923.9% | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
| Q4 25 | 204.7% | — | ||
| Q3 25 | 103.3% | — | ||
| Q2 25 | 12.0% | — | ||
| Q1 25 | 3.1% | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
| Q4 25 | — | — | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | 0.24× | ||
| Q1 24 | — | — |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
