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Side-by-side financial comparison of APPLIED OPTOELECTRONICS, INC. (AAOI) and Ultragenyx Pharmaceutical Inc. (RARE). Click either name above to swap in a different company.
Ultragenyx Pharmaceutical Inc. is the larger business by last-quarter revenue ($207.3M vs $134.3M, roughly 1.5× APPLIED OPTOELECTRONICS, INC.). On growth, APPLIED OPTOELECTRONICS, INC. posted the faster year-over-year revenue change (33.9% vs 25.9%). Ultragenyx Pharmaceutical Inc. produced more free cash flow last quarter ($-100.8M vs $-104.6M). Over the past eight quarters, APPLIED OPTOELECTRONICS, INC.'s revenue compounded faster (81.7% CAGR vs 38.0%).
Applied Optoelectronics Inc. is an American semiconductor company that focuses on optical devices. It was founded in 1997 at the University of Houston and is headquartered in Sugar Land, Texas.
Ultragenyx Pharmaceutical Inc. is an American biopharmaceutical company involved in the research and development of novel products for treatment of rare and ultra-rare genetic diseases for which there are typically no approved treatments and high unmet medical need. The company works with multiple drug modalities including biologics, small molecule, gene therapies, and ASO and mRNAs in the disease categories of bone, endocrine, metabolic, muscle and CNS diseases.
AAOI vs RARE — Head-to-Head
Income Statement — Q4 FY2025 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $134.3M | $207.3M |
| Net Profit | — | $-128.6M |
| Gross Margin | 31.2% | — |
| Operating Margin | -8.6% | -54.7% |
| Net Margin | — | -62.0% |
| Revenue YoY | 33.9% | 25.9% |
| Net Profit YoY | — | 3.5% |
| EPS (diluted) | $-0.02 | $-1.28 |
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 | $134.3M | $207.3M | ||
| Q3 25 | $118.6M | $159.9M | ||
| Q2 25 | $103.0M | $166.5M | ||
| Q1 25 | $99.9M | $139.3M | ||
| Q4 24 | $100.3M | $164.6M | ||
| Q3 24 | $65.2M | $139.5M | ||
| Q2 24 | $43.3M | $147.0M | ||
| Q1 24 | $40.7M | $108.8M |
| Q4 25 | — | $-128.6M | ||
| Q3 25 | $-17.9M | $-180.4M | ||
| Q2 25 | $-9.1M | $-115.0M | ||
| Q1 25 | $-9.2M | $-151.1M | ||
| Q4 24 | — | $-133.2M | ||
| Q3 24 | $-17.8M | $-133.5M | ||
| Q2 24 | $-26.1M | $-131.6M | ||
| Q1 24 | $-23.2M | $-170.7M |
| Q4 25 | 31.2% | — | ||
| Q3 25 | 28.0% | — | ||
| Q2 25 | 30.3% | — | ||
| Q1 25 | 30.6% | — | ||
| Q4 24 | 28.7% | — | ||
| Q3 24 | 24.4% | — | ||
| Q2 24 | 22.1% | — | ||
| Q1 24 | 18.7% | — |
| Q4 25 | -8.6% | -54.7% | ||
| Q3 25 | -15.3% | -106.9% | ||
| Q2 25 | -15.5% | -64.8% | ||
| Q1 25 | -8.9% | -102.6% | ||
| Q4 24 | -6.5% | -74.3% | ||
| Q3 24 | -25.4% | -94.6% | ||
| Q2 24 | -60.7% | -79.1% | ||
| Q1 24 | -53.2% | -151.9% |
| Q4 25 | — | -62.0% | ||
| Q3 25 | -15.1% | -112.8% | ||
| Q2 25 | -8.8% | -69.0% | ||
| Q1 25 | -9.2% | -108.5% | ||
| Q4 24 | — | -80.9% | ||
| Q3 24 | -27.3% | -95.7% | ||
| Q2 24 | -60.4% | -89.5% | ||
| Q1 24 | -57.0% | -156.8% |
| Q4 25 | $-0.02 | $-1.28 | ||
| Q3 25 | $-0.28 | $-1.81 | ||
| Q2 25 | $-0.16 | $-1.17 | ||
| Q1 25 | $-0.18 | $-1.57 | ||
| Q4 24 | $-2.82 | $-1.34 | ||
| Q3 24 | $-0.42 | $-1.40 | ||
| Q2 24 | $-0.66 | $-1.52 | ||
| Q1 24 | $-0.60 | $-2.03 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $206.1M | $421.0M |
| Total DebtLower is stronger | $34.0M | — |
| Stockholders' EquityBook value | $733.9M | $-80.0M |
| Total Assets | $1.2B | $1.5B |
| Debt / EquityLower = less leverage | 0.05× | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $206.1M | $421.0M | ||
| Q3 25 | $137.0M | $202.5M | ||
| Q2 25 | $64.7M | $176.3M | ||
| Q1 25 | $51.1M | $127.1M | ||
| Q4 24 | $67.4M | $174.0M | ||
| Q3 24 | $34.1M | $150.6M | ||
| Q2 24 | $10.7M | $480.7M | ||
| Q1 24 | $8.4M | $112.3M |
| Q4 25 | $34.0M | — | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | $22.1M | — | ||
| Q4 24 | $26.7M | — | ||
| Q3 24 | $29.5M | — | ||
| Q2 24 | $22.5M | — | ||
| Q1 24 | $24.1M | — |
| Q4 25 | $733.9M | $-80.0M | ||
| Q3 25 | $559.1M | $9.2M | ||
| Q2 25 | $425.0M | $151.3M | ||
| Q1 25 | $309.0M | $144.2M | ||
| Q4 24 | $229.1M | $255.0M | ||
| Q3 24 | $212.1M | $346.8M | ||
| Q2 24 | $186.5M | $432.4M | ||
| Q1 24 | $195.7M | $140.3M |
| Q4 25 | $1.2B | $1.5B | ||
| Q3 25 | $978.5M | $1.2B | ||
| Q2 25 | $796.9M | $1.3B | ||
| Q1 25 | $644.7M | $1.3B | ||
| Q4 24 | $547.0M | $1.5B | ||
| Q3 24 | $410.0M | $1.5B | ||
| Q2 24 | $348.0M | $1.6B | ||
| Q1 24 | $350.9M | $1.3B |
| Q4 25 | 0.05× | — | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | 0.07× | — | ||
| Q4 24 | 0.12× | — | ||
| Q3 24 | 0.14× | — | ||
| Q2 24 | 0.12× | — | ||
| Q1 24 | 0.12× | — |
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 | $-29.6M | $-99.8M |
| Free Cash FlowOCF − Capex | $-104.6M | $-100.8M |
| FCF MarginFCF / Revenue | -77.9% | -48.6% |
| Capex IntensityCapex / Revenue | 55.9% | 0.5% |
| Cash ConversionOCF / Net Profit | — | — |
| TTM Free Cash FlowTrailing 4 quarters | $-353.6M | $-472.0M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $-29.6M | $-99.8M | ||
| Q3 25 | $-28.5M | $-91.4M | ||
| Q2 25 | $-65.5M | $-108.3M | ||
| Q1 25 | $-50.9M | $-166.5M | ||
| Q4 24 | $-24.6M | $-79.3M | ||
| Q3 24 | $-14.4M | $-67.0M | ||
| Q2 24 | $-2.0M | $-77.0M | ||
| Q1 24 | $-28.5M | $-190.7M |
| Q4 25 | $-104.6M | $-100.8M | ||
| Q3 25 | $-78.7M | $-92.7M | ||
| Q2 25 | $-91.0M | $-110.7M | ||
| Q1 25 | $-79.3M | $-167.8M | ||
| Q4 24 | $-53.0M | $-79.5M | ||
| Q3 24 | $-20.7M | $-68.6M | ||
| Q2 24 | $-5.0M | $-79.0M | ||
| Q1 24 | $-34.2M | $-193.9M |
| Q4 25 | -77.9% | -48.6% | ||
| Q3 25 | -66.3% | -58.0% | ||
| Q2 25 | -88.3% | -66.5% | ||
| Q1 25 | -79.4% | -120.5% | ||
| Q4 24 | -52.9% | -48.3% | ||
| Q3 24 | -31.8% | -49.2% | ||
| Q2 24 | -11.5% | -53.7% | ||
| Q1 24 | -84.2% | -178.2% |
| Q4 25 | 55.9% | 0.5% | ||
| Q3 25 | 42.4% | 0.8% | ||
| Q2 25 | 24.7% | 1.5% | ||
| Q1 25 | 28.4% | 1.0% | ||
| Q4 24 | 28.3% | 0.1% | ||
| Q3 24 | 9.7% | 1.2% | ||
| Q2 24 | 6.9% | 1.4% | ||
| Q1 24 | 14.2% | 3.0% |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
AAOI
| Data Center | $74.9M | 56% |
| CATV | $54.0M | 40% |
| Telecom | $5.1M | 4% |
RARE
| Royalty | $105.6M | 51% |
| Products | $101.7M | 49% |
