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Side-by-side financial comparison of CASTLE BIOSCIENCES INC (CSTL) and Genie Energy Ltd. (GNE). Click either name above to swap in a different company.

Genie Energy Ltd. is the larger business by last-quarter revenue ($138.3M vs $83.7M, roughly 1.7× CASTLE BIOSCIENCES INC). Genie Energy Ltd. runs the higher net margin — 4.9% vs -17.4%, a 22.2% gap on every dollar of revenue. On growth, Genie Energy Ltd. posted the faster year-over-year revenue change (23.6% vs -4.9%). Over the past eight quarters, Genie Energy Ltd.'s revenue compounded faster (14.8% CAGR vs -1.9%).

Castle Biosciences Inc. is a commercial-stage diagnostic firm that develops and markets proprietary, clinically actionable tests for dermatological conditions such as melanoma and other skin cancers, plus rare diseases. It operates mainly in the U.S. healthcare market, focusing on segments with high unmet need for more accurate diagnostics to guide treatment choices.

Genie Energy Ltd. is an American energy company headquartered in Newark, New Jersey. It is a holding company comprising Genie Retail Energy, Genie Retail Energy International, Genie Energy Services, and Genie Energy Oil and Gas. Michael Stein is the Chief Executive Officer, Genie Energy Ltd.

CSTL vs GNE — Head-to-Head

Bigger by revenue
GNE
GNE
1.7× larger
GNE
$138.3M
$83.7M
CSTL
Growing faster (revenue YoY)
GNE
GNE
+28.5% gap
GNE
23.6%
-4.9%
CSTL
Higher net margin
GNE
GNE
22.2% more per $
GNE
4.9%
-17.4%
CSTL
Faster 2-yr revenue CAGR
GNE
GNE
Annualised
GNE
14.8%
-1.9%
CSTL

Income Statement — Q1 FY2026 vs Q3 FY2025

Metric
CSTL
CSTL
GNE
GNE
Revenue
$83.7M
$138.3M
Net Profit
$-14.5M
$6.7M
Gross Margin
21.7%
Operating Margin
5.0%
Net Margin
-17.4%
4.9%
Revenue YoY
-4.9%
23.6%
Net Profit YoY
43.8%
-33.9%
EPS (diluted)
$-0.49
$0.26

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
CSTL
CSTL
GNE
GNE
Q1 26
$83.7M
Q4 25
$87.0M
Q3 25
$83.0M
$138.3M
Q2 25
$86.2M
$105.3M
Q1 25
$88.0M
$136.8M
Q4 24
$86.3M
$102.9M
Q3 24
$85.8M
$111.9M
Q2 24
$87.0M
$90.7M
Net Profit
CSTL
CSTL
GNE
GNE
Q1 26
$-14.5M
Q4 25
Q3 25
$-501.0K
$6.7M
Q2 25
$4.5M
$2.8M
Q1 25
$-25.8M
$10.3M
Q4 24
$-15.3M
Q3 24
$2.3M
$10.2M
Q2 24
$8.9M
$9.6M
Gross Margin
CSTL
CSTL
GNE
GNE
Q1 26
Q4 25
79.0%
Q3 25
77.5%
21.7%
Q2 25
79.5%
22.3%
Q1 25
81.4%
27.3%
Q4 24
81.3%
32.5%
Q3 24
81.8%
33.9%
Q2 24
83.3%
36.8%
Operating Margin
CSTL
CSTL
GNE
GNE
Q1 26
Q4 25
-4.4%
Q3 25
-8.2%
5.0%
Q2 25
-4.9%
1.9%
Q1 25
-31.7%
9.4%
Q4 24
4.7%
-20.2%
Q3 24
5.9%
10.4%
Q2 24
5.8%
11.6%
Net Margin
CSTL
CSTL
GNE
GNE
Q1 26
-17.4%
Q4 25
Q3 25
-0.6%
4.9%
Q2 25
5.2%
2.7%
Q1 25
-29.4%
7.5%
Q4 24
-14.9%
Q3 24
2.6%
9.1%
Q2 24
10.3%
10.6%
EPS (diluted)
CSTL
CSTL
GNE
GNE
Q1 26
$-0.49
Q4 25
$-0.06
Q3 25
$-0.02
$0.26
Q2 25
$0.15
$0.11
Q1 25
$-0.90
$0.40
Q4 24
$0.32
$-0.58
Q3 24
$0.08
$0.38
Q2 24
$0.31
$0.36

Balance Sheet & Financial Strength

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

Metric
CSTL
CSTL
GNE
GNE
Cash + ST InvestmentsLiquidity on hand
$63.8M
$109.8M
Total DebtLower is stronger
$10.1M
Stockholders' EquityBook value
$461.4M
$198.8M
Total Assets
$547.8M
$394.1M
Debt / EquityLower = less leverage
0.02×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CSTL
CSTL
GNE
GNE
Q1 26
$63.8M
Q4 25
$299.5M
Q3 25
$287.5M
$109.8M
Q2 25
$275.9M
$106.0M
Q1 25
$275.2M
$118.3M
Q4 24
$293.1M
$110.1M
Q3 24
$95.0M
$141.8M
Q2 24
$85.6M
$126.8M
Total Debt
CSTL
CSTL
GNE
GNE
Q1 26
$10.1M
Q4 25
$10.1M
Q3 25
$10.0M
Q2 25
$10.0M
Q1 25
$10.0M
Q4 24
$10.0M
Q3 24
$10.0M
Q2 24
$10.0M
Stockholders' Equity
CSTL
CSTL
GNE
GNE
Q1 26
$461.4M
Q4 25
$470.9M
Q3 25
$467.0M
$198.8M
Q2 25
$455.4M
$197.0M
Q1 25
$440.3M
$198.0M
Q4 24
$455.8M
$190.5M
Q3 24
$441.1M
$211.1M
Q2 24
$423.9M
$202.1M
Total Assets
CSTL
CSTL
GNE
GNE
Q1 26
$547.8M
Q4 25
$578.6M
Q3 25
$562.8M
$394.1M
Q2 25
$544.7M
$383.1M
Q1 25
$501.7M
$384.4M
Q4 24
$531.2M
$371.3M
Q3 24
$514.6M
$341.7M
Q2 24
$487.3M
$322.8M
Debt / Equity
CSTL
CSTL
GNE
GNE
Q1 26
0.02×
Q4 25
0.02×
Q3 25
0.02×
Q2 25
0.02×
Q1 25
0.02×
Q4 24
0.02×
Q3 24
0.02×
Q2 24
0.02×

Cash Flow & Capital Efficiency

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

Metric
CSTL
CSTL
GNE
GNE
Operating Cash FlowLast quarter
$-22.1M
$13.9M
Free Cash FlowOCF − Capex
FCF MarginFCF / Revenue
Capex IntensityCapex / Revenue
Cash ConversionOCF / Net Profit
2.07×
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CSTL
CSTL
GNE
GNE
Q1 26
$-22.1M
Q4 25
$26.9M
Q3 25
$22.6M
$13.9M
Q2 25
$20.8M
$1.1M
Q1 25
$-6.0M
$15.3M
Q4 24
$24.4M
$13.0M
Q3 24
$23.3M
$24.4M
Q2 24
$24.0M
$20.4M
Free Cash Flow
CSTL
CSTL
GNE
GNE
Q1 26
Q4 25
$19.7M
Q3 25
$7.8M
Q2 25
$11.6M
Q1 25
$-10.8M
$13.6M
Q4 24
$16.8M
Q3 24
$17.0M
$21.9M
Q2 24
$18.8M
$20.1M
FCF Margin
CSTL
CSTL
GNE
GNE
Q1 26
Q4 25
22.7%
Q3 25
9.4%
Q2 25
13.4%
Q1 25
-12.2%
9.9%
Q4 24
19.5%
Q3 24
19.8%
19.6%
Q2 24
21.6%
22.1%
Capex Intensity
CSTL
CSTL
GNE
GNE
Q1 26
Q4 25
8.3%
Q3 25
17.9%
Q2 25
10.7%
Q1 25
5.4%
1.3%
Q4 24
8.8%
Q3 24
7.4%
2.2%
Q2 24
6.0%
0.4%
Cash Conversion
CSTL
CSTL
GNE
GNE
Q1 26
Q4 25
Q3 25
2.07×
Q2 25
4.60×
0.40×
Q1 25
1.49×
Q4 24
Q3 24
10.29×
2.39×
Q2 24
2.69×
2.12×

Financial Flow Comparison

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

Revenue Breakdown by Segment

CSTL
CSTL

Segment breakdown not available.

GNE
GNE

Sales Channel Directly To Consumer$108.8M79%
Sales Channel Through Intermediary$23.5M17%
Genie Renewables GREW$6.0M4%

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