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Side-by-side financial comparison of Cytek Biosciences, Inc. (CTKB) and RING ENERGY, INC. (REI). Click either name above to swap in a different company.

RING ENERGY, INC. is the larger business by last-quarter revenue ($66.9M vs $62.1M, roughly 1.1× Cytek Biosciences, Inc.). On growth, Cytek Biosciences, Inc. posted the faster year-over-year revenue change (8.1% vs -19.8%). Over the past eight quarters, Cytek Biosciences, Inc.'s revenue compounded faster (17.7% CAGR vs -15.9%).

Cytek Biosciences, Inc. develops, manufactures and sells high-performance flow cytometry systems, associated reagents and analysis software. Its solutions serve life science research, clinical diagnostics and biopharmaceutical sectors, with a global customer base across North America, Europe and the Asia-Pacific region.

Siemens Energy AG is a German publicly traded energy corporation formed through the spin-off of the former Gas and Power division of Siemens, and it includes full ownership of Siemens Gamesa.

CTKB vs REI — Head-to-Head

Bigger by revenue
REI
REI
1.1× larger
REI
$66.9M
$62.1M
CTKB
Growing faster (revenue YoY)
CTKB
CTKB
+28.0% gap
CTKB
8.1%
-19.8%
REI
Faster 2-yr revenue CAGR
CTKB
CTKB
Annualised
CTKB
17.7%
-15.9%
REI

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
CTKB
CTKB
REI
REI
Revenue
$62.1M
$66.9M
Net Profit
$-44.1M
Gross Margin
52.9%
Operating Margin
-9.0%
-37.6%
Net Margin
-70.9%
Revenue YoY
8.1%
-19.8%
Net Profit YoY
-557.1%
EPS (diluted)
$-0.07

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
CTKB
CTKB
REI
REI
Q4 25
$62.1M
$66.9M
Q3 25
$52.3M
$78.6M
Q2 25
$45.6M
$82.6M
Q1 25
$41.5M
$79.1M
Q4 24
$57.5M
$83.4M
Q3 24
$51.5M
$89.2M
Q2 24
$46.6M
$99.1M
Q1 24
$44.9M
$94.5M
Net Profit
CTKB
CTKB
REI
REI
Q4 25
$-44.1M
Q3 25
$-5.5M
$-51.6M
Q2 25
$-5.6M
$20.6M
Q1 25
$-11.4M
$9.1M
Q4 24
$9.6M
Q3 24
$941.0K
$33.9M
Q2 24
$-10.4M
$22.4M
Q1 24
$-6.2M
$5.5M
Gross Margin
CTKB
CTKB
REI
REI
Q4 25
52.9%
Q3 25
52.7%
Q2 25
52.3%
Q1 25
48.6%
Q4 24
58.5%
Q3 24
56.3%
Q2 24
54.6%
Q1 24
51.3%
Operating Margin
CTKB
CTKB
REI
REI
Q4 25
-9.0%
-37.6%
Q3 25
-17.6%
-70.0%
Q2 25
-23.3%
28.4%
Q1 25
-36.1%
28.3%
Q4 24
5.2%
28.3%
Q3 24
-8.2%
33.4%
Q2 24
-18.3%
42.2%
Q1 24
-23.9%
39.8%
Net Margin
CTKB
CTKB
REI
REI
Q4 25
-70.9%
Q3 25
-10.5%
-65.7%
Q2 25
-12.2%
25.0%
Q1 25
-27.5%
11.5%
Q4 24
16.8%
Q3 24
1.8%
38.0%
Q2 24
-22.4%
22.6%
Q1 24
-13.8%
5.8%
EPS (diluted)
CTKB
CTKB
REI
REI
Q4 25
$-0.07
Q3 25
$-0.25
Q2 25
$0.10
Q1 25
$0.05
Q4 24
$0.03
Q3 24
$0.17
Q2 24
$0.11
Q1 24
$0.03

Balance Sheet & Financial Strength

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

Metric
CTKB
CTKB
REI
REI
Cash + ST InvestmentsLiquidity on hand
$90.9M
$902.9K
Total DebtLower is stronger
Stockholders' EquityBook value
$341.7M
$836.3M
Total Assets
$461.5M
$1.4B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CTKB
CTKB
REI
REI
Q4 25
$90.9M
$902.9K
Q3 25
$93.3M
$286.9K
Q2 25
$75.5M
Q1 25
$95.3M
$1.1M
Q4 24
$98.7M
$1.9M
Q3 24
$162.3M
Q2 24
$177.9M
$1.2M
Q1 24
$168.8M
$1.4M
Stockholders' Equity
CTKB
CTKB
REI
REI
Q4 25
$341.7M
$836.3M
Q3 25
$378.6M
$847.7M
Q2 25
$377.6M
$897.9M
Q1 25
$379.6M
$876.0M
Q4 24
$395.7M
$858.6M
Q3 24
$385.5M
$851.3M
Q2 24
$389.1M
$817.4M
Q1 24
$392.6M
$793.0M
Total Assets
CTKB
CTKB
REI
REI
Q4 25
$461.5M
$1.4B
Q3 25
$494.9M
$1.4B
Q2 25
$493.3M
$1.5B
Q1 25
$482.6M
$1.5B
Q4 24
$499.5M
$1.4B
Q3 24
$491.2M
$1.4B
Q2 24
$483.7M
$1.4B
Q1 24
$492.1M
$1.4B

Cash Flow & Capital Efficiency

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

Metric
CTKB
CTKB
REI
REI
Operating Cash FlowLast quarter
$-771.0K
$44.7M
Free Cash FlowOCF − Capex
$-1.8M
FCF MarginFCF / Revenue
-2.9%
Capex IntensityCapex / Revenue
1.6%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-8.8M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CTKB
CTKB
REI
REI
Q4 25
$-771.0K
$44.7M
Q3 25
$-3.9M
$44.5M
Q2 25
$108.0K
$33.3M
Q1 25
$-125.0K
$28.4M
Q4 24
$2.0M
$47.3M
Q3 24
$13.2M
$51.3M
Q2 24
$6.2M
$50.6M
Q1 24
$4.0M
$45.2M
Free Cash Flow
CTKB
CTKB
REI
REI
Q4 25
$-1.8M
Q3 25
$-4.6M
Q2 25
$-1.5M
Q1 25
$-974.0K
Q4 24
$1.1M
Q3 24
$12.2M
Q2 24
$5.2M
Q1 24
$3.4M
FCF Margin
CTKB
CTKB
REI
REI
Q4 25
-2.9%
Q3 25
-8.7%
Q2 25
-3.2%
Q1 25
-2.3%
Q4 24
1.9%
Q3 24
23.7%
Q2 24
11.0%
Q1 24
7.6%
Capex Intensity
CTKB
CTKB
REI
REI
Q4 25
1.6%
Q3 25
1.3%
Q2 25
3.5%
Q1 25
2.0%
Q4 24
1.6%
Q3 24
2.0%
Q2 24
2.3%
Q1 24
1.3%
Cash Conversion
CTKB
CTKB
REI
REI
Q4 25
Q3 25
Q2 25
1.61×
Q1 25
3.11×
Q4 24
0.21×
Q3 24
14.05×
1.52×
Q2 24
2.26×
Q1 24
8.19×

Financial Flow Comparison

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

Revenue Breakdown by Segment

CTKB
CTKB

Products$46.6M75%
Services$15.5M25%

REI
REI

Segment breakdown not available.

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