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Side-by-side financial comparison of Joby Aviation, Inc. (JOBY) and STEM, INC. (STEM). Click either name above to swap in a different company.

STEM, INC. is the larger business by last-quarter revenue ($47.1M vs $30.8M, roughly 1.5× Joby Aviation, Inc.). On growth, Joby Aviation, Inc. posted the faster year-over-year revenue change (55965.5% vs -15.6%).

Joby Aviation is a United States venture-backed aviation company, developing an electric vertical takeoff and landing (eVTOL) aircraft that it intends to operate as an air taxi service. Joby Aviation is headquartered in Santa Cruz, California and has offices in San Carlos, California; Marina, California; and Munich, Germany.

StemCells, Inc. is a public biopharmaceutical company headquartered in Newark, California, that is developing purified human neural stem cells (HuCNS-SCs) in the hopes of treating central nervous system disorders and paralysis. StemCells' HuCNS-SCs have the ability to differentiate into the three main types of cells found in the central nervous system: neurons, astrocytes and oligodendrocytes.

JOBY vs STEM — Head-to-Head

Bigger by revenue
STEM
STEM
1.5× larger
STEM
$47.1M
$30.8M
JOBY
Growing faster (revenue YoY)
JOBY
JOBY
+55981.0% gap
JOBY
55965.5%
-15.6%
STEM

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
JOBY
JOBY
STEM
STEM
Revenue
$30.8M
$47.1M
Net Profit
$-16.0M
Gross Margin
48.9%
Operating Margin
-17.7%
Net Margin
-33.9%
Revenue YoY
55965.5%
-15.6%
Net Profit YoY
50.7%
68.8%
EPS (diluted)
$-4.40

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.

Revenue
JOBY
JOBY
STEM
STEM
Q4 25
$30.8M
$47.1M
Q3 25
$22.6M
$38.2M
Q2 25
$38.4M
Q1 25
$0
$32.5M
Q4 24
$55.8M
Q3 24
$29.3M
Q2 24
$34.0M
Q1 24
$25.5M
Net Profit
JOBY
JOBY
STEM
STEM
Q4 25
$-16.0M
Q3 25
$-401.2M
$-23.8M
Q2 25
$202.5M
Q1 25
$-82.4M
$-25.0M
Q4 24
$-51.1M
Q3 24
$-148.3M
Q2 24
$-582.3M
Q1 24
$-72.3M
Gross Margin
JOBY
JOBY
STEM
STEM
Q4 25
48.9%
Q3 25
35.5%
Q2 25
33.4%
Q1 25
32.4%
Q4 24
-4.4%
Q3 24
21.2%
Q2 24
27.6%
Q1 24
-95.0%
Operating Margin
JOBY
JOBY
STEM
STEM
Q4 25
-17.7%
Q3 25
-804.8%
-33.6%
Q2 25
-34.8%
Q1 25
-65.0%
Q4 24
-84.4%
Q3 24
-493.2%
Q2 24
-1705.5%
Q1 24
-267.0%
Net Margin
JOBY
JOBY
STEM
STEM
Q4 25
-33.9%
Q3 25
-1777.4%
-62.2%
Q2 25
527.8%
Q1 25
-76.9%
Q4 24
-91.6%
Q3 24
-506.3%
Q2 24
-1712.6%
Q1 24
-283.9%
EPS (diluted)
JOBY
JOBY
STEM
STEM
Q4 25
$-4.40
Q3 25
$-0.48
$-2.84
Q2 25
$-1.79
Q1 25
$-0.11
$-0.15
Q4 24
$-15.29
Q3 24
$-18.24
Q2 24
$-71.81
Q1 24
$-0.46

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
JOBY
JOBY
STEM
STEM
Cash + ST InvestmentsLiquidity on hand
$1.4B
$48.9M
Total DebtLower is stronger
Stockholders' EquityBook value
$1.4B
$-249.4M
Total Assets
$1.8B
$308.9M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
JOBY
JOBY
STEM
STEM
Q4 25
$1.4B
$48.9M
Q3 25
$978.1M
$43.1M
Q2 25
$40.8M
Q1 25
$812.5M
$58.6M
Q4 24
$56.3M
Q3 24
$75.4M
Q2 24
$89.6M
Q1 24
$112.8M
Stockholders' Equity
JOBY
JOBY
STEM
STEM
Q4 25
$1.4B
$-249.4M
Q3 25
$896.5M
$-235.7M
Q2 25
$-214.1M
Q1 25
$859.4M
$-417.5M
Q4 24
$-398.4M
Q3 24
$-344.1M
Q2 24
$-203.2M
Q1 24
$371.6M
Total Assets
JOBY
JOBY
STEM
STEM
Q4 25
$1.8B
$308.9M
Q3 25
$1.4B
$362.6M
Q2 25
$379.2M
Q1 25
$1.1B
$405.1M
Q4 24
$437.4M
Q3 24
$537.8M
Q2 24
$691.5M
Q1 24
$1.3B

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
JOBY
JOBY
STEM
STEM
Operating Cash FlowLast quarter
$-509.9M
$8.2M
Free Cash FlowOCF − Capex
$-563.8M
FCF MarginFCF / Revenue
-1828.4%
Capex IntensityCapex / Revenue
174.9%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-930.7M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
JOBY
JOBY
STEM
STEM
Q4 25
$-509.9M
$8.2M
Q3 25
$-139.2M
$11.4M
Q2 25
$-21.3M
Q1 25
$-111.0M
$8.5M
Q4 24
$-14.7M
Q3 24
$-9.4M
Q2 24
$-11.9M
Q1 24
$-621.0K
Free Cash Flow
JOBY
JOBY
STEM
STEM
Q4 25
$-563.8M
Q3 25
$-152.2M
Q2 25
Q1 25
$-125.9M
Q4 24
Q3 24
Q2 24
Q1 24
FCF Margin
JOBY
JOBY
STEM
STEM
Q4 25
-1828.4%
Q3 25
-674.3%
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24
Capex Intensity
JOBY
JOBY
STEM
STEM
Q4 25
174.9%
Q3 25
57.7%
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24
Cash Conversion
JOBY
JOBY
STEM
STEM
Q4 25
Q3 25
Q2 25
-0.11×
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

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