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Side-by-side financial comparison of BLACKBOXSTOCKS INC. (BLBX) and Lucid Diagnostics Inc. (LUCD). Click either name above to swap in a different company.

Lucid Diagnostics Inc. is the larger business by last-quarter revenue ($1.2M vs $628.4K, roughly 1.9× BLACKBOXSTOCKS INC.). BLACKBOXSTOCKS INC. runs the higher net margin — -255.8% vs -858.5%, a 602.8% gap on every dollar of revenue. On growth, BLACKBOXSTOCKS INC. posted the faster year-over-year revenue change (7.4% vs 3.3%). Over the past eight quarters, Lucid Diagnostics Inc.'s revenue compounded faster (7.9% CAGR vs -1.6%).

Blackboxstocks Inc. is a US-based fintech firm operating a subscription trading analytics platform for retail and active traders. It provides real-time market data, trade signals, analytical tools and social trading features for equity, options and digital asset markets, making institutional-grade trading resources accessible to individual users.

Lucid Diagnostics Inc. is a commercial-stage medical diagnostics firm focused on non-invasive screening tests for upper gastrointestinal diseases, including early detection of esophageal cancer and pre-cancerous lesions. It mainly serves healthcare providers and clinical partners across the United States, targeting at-risk patient populations.

BLBX vs LUCD — Head-to-Head

Bigger by revenue
LUCD
LUCD
1.9× larger
LUCD
$1.2M
$628.4K
BLBX
Growing faster (revenue YoY)
BLBX
BLBX
+4.1% gap
BLBX
7.4%
3.3%
LUCD
Higher net margin
BLBX
BLBX
602.8% more per $
BLBX
-255.8%
-858.5%
LUCD
Faster 2-yr revenue CAGR
LUCD
LUCD
Annualised
LUCD
7.9%
-1.6%
BLBX

Income Statement — Q4 FY2025 vs Q3 FY2025

Metric
BLBX
BLBX
LUCD
LUCD
Revenue
$628.4K
$1.2M
Net Profit
$-1.6M
$-10.4M
Gross Margin
60.6%
Operating Margin
-248.0%
-971.0%
Net Margin
-255.8%
-858.5%
Revenue YoY
7.4%
3.3%
Net Profit YoY
-69.4%
16.0%
EPS (diluted)
$-0.10

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
BLBX
BLBX
LUCD
LUCD
Q4 25
$628.4K
Q3 25
$697.0K
$1.2M
Q2 25
$518.8K
$1.2M
Q1 25
$587.1K
$828.0K
Q4 24
$585.0K
$1.2M
Q3 24
$647.8K
$1.2M
Q2 24
$684.7K
$976.0K
Q1 24
$649.4K
$1.0M
Net Profit
BLBX
BLBX
LUCD
LUCD
Q4 25
$-1.6M
Q3 25
$-720.6K
$-10.4M
Q2 25
$-1.3M
$-4.4M
Q1 25
$-829.1K
$-26.9M
Q4 24
$-948.7K
$-11.5M
Q3 24
$-780.8K
$-12.4M
Q2 24
$-877.9K
$-11.0M
Q1 24
$-863.7K
$-10.6M
Gross Margin
BLBX
BLBX
LUCD
LUCD
Q4 25
60.6%
Q3 25
53.7%
Q2 25
32.2%
Q1 25
41.6%
Q4 24
26.5%
Q3 24
54.7%
Q2 24
48.0%
Q1 24
44.9%
Operating Margin
BLBX
BLBX
LUCD
LUCD
Q4 25
-248.0%
Q3 25
-63.0%
-971.0%
Q2 25
-220.4%
-978.8%
Q1 25
-151.2%
-1508.1%
Q4 24
-151.5%
-1033.8%
Q3 24
-113.3%
-997.8%
Q2 24
-120.5%
-1146.7%
Q1 24
-133.0%
-1078.1%
Net Margin
BLBX
BLBX
LUCD
LUCD
Q4 25
-255.8%
Q3 25
-103.4%
-858.5%
Q2 25
-244.7%
-381.7%
Q1 25
-141.2%
-3249.8%
Q4 24
-162.2%
-964.2%
Q3 24
-120.5%
-1055.5%
Q2 24
-128.2%
-1127.6%
Q1 24
-133.0%
-1060.1%
EPS (diluted)
BLBX
BLBX
LUCD
LUCD
Q4 25
Q3 25
$-0.10
Q2 25
$-0.08
Q1 25
$-0.52
Q4 24
$-0.17
Q3 24
$-0.25
Q2 24
$-0.23
Q1 24
$-0.40

Balance Sheet & Financial Strength

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

Metric
BLBX
BLBX
LUCD
LUCD
Cash + ST InvestmentsLiquidity on hand
$47.3M
Total DebtLower is stronger
Stockholders' EquityBook value
$5.7M
$25.8M
Total Assets
$8.7M
$53.2M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
BLBX
BLBX
LUCD
LUCD
Q4 25
Q3 25
$47.3M
Q2 25
$31.1M
Q1 25
$25.2M
Q4 24
$22.4M
Q3 24
$60.9K
$14.5M
Q2 24
$1.1M
$24.9M
Q1 24
$115.0K
$24.8M
Stockholders' Equity
BLBX
BLBX
LUCD
LUCD
Q4 25
$5.7M
Q3 25
$4.8M
$25.8M
Q2 25
$3.6M
$7.9M
Q1 25
$4.7M
$-5.4M
Q4 24
$5.4M
$5.4M
Q3 24
$6.3M
$6.3M
Q2 24
$5.8M
$16.0M
Q1 24
$6.5M
$11.9M
Total Assets
BLBX
BLBX
LUCD
LUCD
Q4 25
$8.7M
Q3 25
$8.8M
$53.2M
Q2 25
$9.9M
$38.7M
Q1 25
$10.2M
$32.8M
Q4 24
$9.9M
$30.7M
Q3 24
$10.0M
$22.6M
Q2 24
$9.9M
$34.1M
Q1 24
$9.0M
$32.0M

Cash Flow & Capital Efficiency

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

Metric
BLBX
BLBX
LUCD
LUCD
Operating Cash FlowLast quarter
$-510.4K
$-10.9M
Free Cash FlowOCF − Capex
FCF MarginFCF / Revenue
Capex IntensityCapex / Revenue
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
BLBX
BLBX
LUCD
LUCD
Q4 25
$-510.4K
Q3 25
$-955.9K
$-10.9M
Q2 25
$-1.1M
$-10.5M
Q1 25
$-643.7K
$-12.5M
Q4 24
$-24.4K
$-9.9M
Q3 24
$5.8K
$-10.2M
Q2 24
$-333.4K
$-11.5M
Q1 24
$-353.8K
$-12.6M
Capex Intensity
BLBX
BLBX
LUCD
LUCD
Q4 25
Q3 25
Q2 25
Q1 25
Q4 24
Q3 24
0.0%
Q2 24
Q1 24

Financial Flow Comparison

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

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