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Side-by-side financial comparison of Adaptive Biotechnologies Corp (ADPT) and System1, Inc. (SST). Click either name above to swap in a different company.

Adaptive Biotechnologies Corp is the larger business by last-quarter revenue ($71.7M vs $51.9M, roughly 1.4× System1, Inc.). Adaptive Biotechnologies Corp runs the higher net margin — -18.9% vs -26.0%, a 7.0% gap on every dollar of revenue. On growth, Adaptive Biotechnologies Corp posted the faster year-over-year revenue change (51.0% vs -31.3%). Over the past eight quarters, Adaptive Biotechnologies Corp's revenue compounded faster (30.8% CAGR vs -21.8%).

ExpreS2ion Biotechnologies is a Danish biotechnology company specialised in the development of new vaccines and immunotherapy products based in Hørsholm, Denmark and listed on the Nasdaq First North Growth Market Sweden.

System1 is an American Internet advertising company. Formerly known as OpenMail, it was founded in 2013. It describes itself as operating a "Responsive Acquisition Marketing Platform", and cites privacy as one of its principal foci, although it has been criticized for its influence on privacy-focused properties, including search engine Startpage.com. It is headquartered in Marina del Rey, California.

ADPT vs SST — Head-to-Head

Bigger by revenue
ADPT
ADPT
1.4× larger
ADPT
$71.7M
$51.9M
SST
Growing faster (revenue YoY)
ADPT
ADPT
+82.3% gap
ADPT
51.0%
-31.3%
SST
Higher net margin
ADPT
ADPT
7.0% more per $
ADPT
-18.9%
-26.0%
SST
Faster 2-yr revenue CAGR
ADPT
ADPT
Annualised
ADPT
30.8%
-21.8%
SST

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ADPT
ADPT
SST
SST
Revenue
$71.7M
$51.9M
Net Profit
$-13.6M
$-13.5M
Gross Margin
74.6%
41.0%
Operating Margin
-17.8%
-33.6%
Net Margin
-18.9%
-26.0%
Revenue YoY
51.0%
-31.3%
Net Profit YoY
59.7%
4.8%
EPS (diluted)
$-0.08
$-3.58

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
ADPT
ADPT
SST
SST
Q4 25
$71.7M
$51.9M
Q3 25
$94.0M
$61.6M
Q2 25
$58.9M
$78.1M
Q1 25
$52.4M
$74.5M
Q4 24
$47.5M
$75.6M
Q3 24
$46.4M
$88.8M
Q2 24
$43.2M
$94.6M
Q1 24
$41.9M
$84.9M
Net Profit
ADPT
ADPT
SST
SST
Q4 25
$-13.6M
$-13.5M
Q3 25
$9.5M
$-18.5M
Q2 25
$-25.6M
$-17.5M
Q1 25
$-29.9M
$-15.9M
Q4 24
$-33.7M
$-14.2M
Q3 24
$-32.1M
$-23.6M
Q2 24
$-46.2M
$-26.4M
Q1 24
$-47.5M
$-10.5M
Gross Margin
ADPT
ADPT
SST
SST
Q4 25
74.6%
41.0%
Q3 25
80.7%
36.9%
Q2 25
69.4%
35.7%
Q1 25
67.6%
38.2%
Q4 24
62.0%
42.1%
Q3 24
64.1%
28.0%
Q2 24
55.3%
27.6%
Q1 24
56.9%
21.9%
Operating Margin
ADPT
ADPT
SST
SST
Q4 25
-17.8%
-33.6%
Q3 25
10.9%
-25.3%
Q2 25
-42.5%
-20.4%
Q1 25
-56.4%
-17.6%
Q4 24
-71.3%
-15.7%
Q3 24
-70.3%
-24.6%
Q2 24
-109.6%
-30.8%
Q1 24
-116.5%
-30.4%
Net Margin
ADPT
ADPT
SST
SST
Q4 25
-18.9%
-26.0%
Q3 25
10.2%
-30.1%
Q2 25
-43.5%
-22.4%
Q1 25
-56.9%
-21.3%
Q4 24
-71.0%
-18.7%
Q3 24
-69.1%
-26.6%
Q2 24
-107.0%
-27.9%
Q1 24
-113.5%
-12.4%
EPS (diluted)
ADPT
ADPT
SST
SST
Q4 25
$-0.08
$-3.58
Q3 25
$0.06
$-2.30
Q2 25
$-0.17
$-2.23
Q1 25
$-0.20
$-0.21
Q4 24
$-0.22
$-3.41
Q3 24
$-0.22
$-3.37
Q2 24
$-0.31
$-3.80
Q1 24
$-0.33
$-0.16

Balance Sheet & Financial Strength

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

Metric
ADPT
ADPT
SST
SST
Cash + ST InvestmentsLiquidity on hand
$70.5M
$86.9M
Total DebtLower is stronger
$305.1M
Stockholders' EquityBook value
$218.8M
$30.5M
Total Assets
$512.7M
$405.0M
Debt / EquityLower = less leverage
10.01×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ADPT
ADPT
SST
SST
Q4 25
$70.5M
$86.9M
Q3 25
$55.0M
$54.6M
Q2 25
$43.2M
$63.6M
Q1 25
$50.6M
$43.9M
Q4 24
$47.9M
$63.6M
Q3 24
$38.1M
$69.1M
Q2 24
$59.8M
$75.7M
Q1 24
$71.2M
$69.9M
Total Debt
ADPT
ADPT
SST
SST
Q4 25
$305.1M
Q3 25
$259.2M
Q2 25
$263.3M
Q1 25
$267.4M
Q4 24
$255.1M
Q3 24
$259.2M
Q2 24
$263.3M
Q1 24
$268.6M
Stockholders' Equity
ADPT
ADPT
SST
SST
Q4 25
$218.8M
$30.5M
Q3 25
$204.4M
$42.7M
Q2 25
$179.7M
$58.2M
Q1 25
$190.4M
$67.2M
Q4 24
$202.7M
$80.3M
Q3 24
$223.8M
$90.3M
Q2 24
$241.6M
$109.4M
Q1 24
$274.9M
$131.7M
Total Assets
ADPT
ADPT
SST
SST
Q4 25
$512.7M
$405.0M
Q3 25
$490.6M
$385.2M
Q2 25
$496.6M
$429.2M
Q1 25
$510.9M
$419.2M
Q4 24
$539.4M
$459.1M
Q3 24
$558.5M
$479.3M
Q2 24
$584.9M
$511.3M
Q1 24
$620.3M
$521.1M
Debt / Equity
ADPT
ADPT
SST
SST
Q4 25
10.01×
Q3 25
6.07×
Q2 25
4.53×
Q1 25
3.98×
Q4 24
3.18×
Q3 24
2.87×
Q2 24
2.41×
Q1 24
2.04×

Cash Flow & Capital Efficiency

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

Metric
ADPT
ADPT
SST
SST
Operating Cash FlowLast quarter
$2.1M
$-10.6M
Free Cash FlowOCF − Capex
$1.4M
FCF MarginFCF / Revenue
2.0%
Capex IntensityCapex / Revenue
0.9%
0.0%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-48.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ADPT
ADPT
SST
SST
Q4 25
$2.1M
$-10.6M
Q3 25
$-7.1M
$-2.1M
Q2 25
$-12.4M
$24.5M
Q1 25
$-28.5M
$-15.9M
Q4 24
$-12.5M
$772.0K
Q3 24
$-27.1M
$-5.0K
Q2 24
$-17.3M
$10.0M
Q1 24
$-38.4M
$-16.0M
Free Cash Flow
ADPT
ADPT
SST
SST
Q4 25
$1.4M
Q3 25
$-7.5M
Q2 25
$-13.1M
Q1 25
$-29.7M
$-16.0M
Q4 24
$-12.6M
Q3 24
$-27.4M
$-36.0K
Q2 24
$-19.0M
Q1 24
$-39.9M
FCF Margin
ADPT
ADPT
SST
SST
Q4 25
2.0%
Q3 25
-8.0%
Q2 25
-22.2%
Q1 25
-56.7%
-21.5%
Q4 24
-26.5%
Q3 24
-59.0%
-0.0%
Q2 24
-44.1%
Q1 24
-95.2%
Capex Intensity
ADPT
ADPT
SST
SST
Q4 25
0.9%
0.0%
Q3 25
0.4%
0.0%
Q2 25
1.1%
0.0%
Q1 25
2.4%
0.1%
Q4 24
0.2%
0.0%
Q3 24
0.7%
0.0%
Q2 24
4.0%
0.0%
Q1 24
3.6%
0.0%
Cash Conversion
ADPT
ADPT
SST
SST
Q4 25
Q3 25
-0.75×
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

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

Revenue Breakdown by Segment

ADPT
ADPT

Mrd Business Segment$61.9M86%
Immune Medicine Business$9.8M14%
Immune Medicine Service Revenue$100.0K0%

SST
SST

Segment breakdown not available.

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