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Side-by-side financial comparison of RAMBUS INC (RMBS) and Zai Lab Ltd (ZLAB). Click either name above to swap in a different company.
RAMBUS INC is the larger business by last-quarter revenue ($180.2M vs $127.1M, roughly 1.4× Zai Lab Ltd). On growth, Zai Lab Ltd posted the faster year-over-year revenue change (17.1% vs 8.1%). Over the past eight quarters, Zai Lab Ltd's revenue compounded faster (20.8% CAGR vs 16.8%).
Rambus Inc. is an American technology company that designs, develops and licenses chip interface technologies and architectures that are used in digital electronics products. The company, founded in 1990, is well known for inventing RDRAM and for its intellectual property-based litigation following the introduction of DDR-SDRAM memory.
Zai Lab Ltd is a global biopharmaceutical company focused on developing, manufacturing and commercializing innovative therapies for oncology, autoimmune disorders, infectious diseases and other unmet medical needs. It operates primarily in the Greater China region and partners with leading global biotech firms to expand access to life-saving treatments for underserved patient populations.
RMBS vs ZLAB — Head-to-Head
Income Statement — Q1 FY2026 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $180.2M | $127.1M |
| Net Profit | $59.9M | — |
| Gross Margin | 79.7% | 51.0% |
| Operating Margin | 34.3% | -54.6% |
| Net Margin | 33.2% | — |
| Revenue YoY | 8.1% | 17.1% |
| Net Profit YoY | -7.3% | — |
| EPS (diluted) | $0.55 | $-0.05 |
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.
| Q1 26 | $180.2M | — | ||
| Q4 25 | $190.2M | $127.1M | ||
| Q3 25 | $178.5M | $115.4M | ||
| Q2 25 | $172.2M | $109.1M | ||
| Q1 25 | $166.7M | $105.7M | ||
| Q4 24 | $161.1M | $108.5M | ||
| Q3 24 | $145.5M | $101.8M | ||
| Q2 24 | $132.1M | $100.1M |
| Q1 26 | $59.9M | — | ||
| Q4 25 | $63.8M | — | ||
| Q3 25 | $48.4M | $-36.0M | ||
| Q2 25 | $57.9M | $-40.7M | ||
| Q1 25 | $60.3M | $-48.4M | ||
| Q4 24 | $62.2M | — | ||
| Q3 24 | $48.7M | $-41.7M | ||
| Q2 24 | $36.1M | $-80.3M |
| Q1 26 | 79.7% | — | ||
| Q4 25 | 78.9% | 51.0% | ||
| Q3 25 | 79.5% | 59.5% | ||
| Q2 25 | 79.8% | 60.6% | ||
| Q1 25 | 80.3% | 63.6% | ||
| Q4 24 | 80.4% | 61.5% | ||
| Q3 24 | 80.7% | 64.1% | ||
| Q2 24 | 79.7% | 64.9% |
| Q1 26 | 34.3% | — | ||
| Q4 25 | 37.2% | -54.6% | ||
| Q3 25 | 35.4% | -42.3% | ||
| Q2 25 | 36.6% | -50.3% | ||
| Q1 25 | 37.9% | -53.3% | ||
| Q4 24 | 35.9% | -62.6% | ||
| Q3 24 | 37.6% | -66.6% | ||
| Q2 24 | 30.5% | -76.0% |
| Q1 26 | 33.2% | — | ||
| Q4 25 | 33.6% | — | ||
| Q3 25 | 27.1% | -31.2% | ||
| Q2 25 | 33.6% | -37.3% | ||
| Q1 25 | 36.2% | -45.8% | ||
| Q4 24 | 38.6% | — | ||
| Q3 24 | 33.4% | -40.9% | ||
| Q2 24 | 27.3% | -80.2% |
| Q1 26 | $0.55 | — | ||
| Q4 25 | $0.58 | $-0.05 | ||
| Q3 25 | $0.44 | $-0.03 | ||
| Q2 25 | $0.53 | $-0.04 | ||
| Q1 25 | $0.56 | $-0.04 | ||
| Q4 24 | $0.57 | $-0.09 | ||
| Q3 24 | $0.45 | $-0.04 | ||
| Q2 24 | $0.33 | $-0.08 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $134.3M | $689.6M |
| Total DebtLower is stronger | — | — |
| Stockholders' EquityBook value | — | $715.5M |
| Total Assets | $1.5B | $1.2B |
| Debt / EquityLower = less leverage | — | — |
8-quarter trend — quarters aligned by calendar period.
| Q1 26 | $134.3M | — | ||
| Q4 25 | $182.8M | $689.6M | ||
| Q3 25 | $79.2M | $717.2M | ||
| Q2 25 | $87.8M | $732.2M | ||
| Q1 25 | $132.2M | $757.3M | ||
| Q4 24 | $99.8M | $779.7M | ||
| Q3 24 | $114.0M | $616.1M | ||
| Q2 24 | $124.6M | $630.0M |
| Q1 26 | — | — | ||
| Q4 25 | $1.4B | $715.5M | ||
| Q3 25 | $1.3B | $759.9M | ||
| Q2 25 | $1.2B | $791.7M | ||
| Q1 25 | $1.2B | $810.8M | ||
| Q4 24 | $1.1B | $840.9M | ||
| Q3 24 | $1.0B | $667.7M | ||
| Q2 24 | $1.0B | $704.2M |
| Q1 26 | $1.5B | — | ||
| Q4 25 | $1.5B | $1.2B | ||
| Q3 25 | $1.4B | $1.2B | ||
| Q2 25 | $1.5B | $1.2B | ||
| Q1 25 | $1.4B | $1.2B | ||
| Q4 24 | $1.3B | $1.2B | ||
| Q3 24 | $1.3B | $985.3M | ||
| Q2 24 | $1.3B | $987.4M |
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 | — | $-26.0M |
| Free Cash FlowOCF − Capex | — | $-26.7M |
| FCF MarginFCF / Revenue | — | -21.0% |
| Capex IntensityCapex / Revenue | — | 0.5% |
| Cash ConversionOCF / Net Profit | — | — |
| TTM Free Cash FlowTrailing 4 quarters | — | $-158.9M |
8-quarter trend — quarters aligned by calendar period.
| Q1 26 | — | — | ||
| Q4 25 | $99.8M | $-26.0M | ||
| Q3 25 | $88.4M | $-32.0M | ||
| Q2 25 | $94.4M | $-31.0M | ||
| Q1 25 | $77.4M | $-61.7M | ||
| Q4 24 | $59.0M | $-55.8M | ||
| Q3 24 | $62.1M | $-26.8M | ||
| Q2 24 | $70.4M | $-42.2M |
| Q1 26 | — | — | ||
| Q4 25 | $93.3M | $-26.7M | ||
| Q3 25 | $82.5M | $-35.0M | ||
| Q2 25 | $87.9M | $-33.9M | ||
| Q1 25 | $69.5M | $-63.2M | ||
| Q4 24 | $52.5M | $-58.4M | ||
| Q3 24 | $52.2M | $-28.2M | ||
| Q2 24 | $59.1M | $-42.9M |
| Q1 26 | — | — | ||
| Q4 25 | 49.0% | -21.0% | ||
| Q3 25 | 46.2% | -30.4% | ||
| Q2 25 | 51.0% | -31.1% | ||
| Q1 25 | 41.7% | -59.9% | ||
| Q4 24 | 32.6% | -53.8% | ||
| Q3 24 | 35.9% | -27.7% | ||
| Q2 24 | 44.7% | -42.9% |
| Q1 26 | — | — | ||
| Q4 25 | 3.4% | 0.5% | ||
| Q3 25 | 3.3% | 2.6% | ||
| Q2 25 | 3.8% | 2.6% | ||
| Q1 25 | 4.7% | 1.5% | ||
| Q4 24 | 4.0% | 2.4% | ||
| Q3 24 | 6.8% | 1.3% | ||
| Q2 24 | 8.6% | 0.7% |
| Q1 26 | — | — | ||
| Q4 25 | 1.56× | — | ||
| Q3 25 | 1.83× | — | ||
| Q2 25 | 1.63× | — | ||
| Q1 25 | 1.28× | — | ||
| Q4 24 | 0.95× | — | ||
| Q3 24 | 1.28× | — | ||
| Q2 24 | 1.95× | — |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
RMBS
| Product revenue | $88.0M | 49% |
| Royalties | $69.6M | 39% |
| Contract and other revenue | $22.6M | 13% |
ZLAB
| Zejula | $56.0M | 44% |
| Other | $21.9M | 17% |
| Nuzyra | $16.0M | 13% |
| Optune | $11.9M | 9% |
| XACDURO | $10.7M | 8% |
| Qinlock | $9.7M | 8% |
| AUGTYRO | $836.0K | 1% |
