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Side-by-side financial comparison of Custom Truck One Source, Inc. (CTOS) and INNOSPEC INC. (IOSP). Click either name above to swap in a different company.

INNOSPEC INC. is the larger business by last-quarter revenue ($455.6M vs $422.2M, roughly 1.1× Custom Truck One Source, Inc.). INNOSPEC INC. runs the higher net margin — 10.4% vs -4.2%, a 14.6% gap on every dollar of revenue. On growth, INNOSPEC INC. posted the faster year-over-year revenue change (-2.4% vs -8.5%). Over the past eight quarters, Custom Truck One Source, Inc.'s revenue compounded faster (14.8% CAGR vs -4.6%).

Custom Truck One Source, Inc. is a leading provider of specialized heavy truck and equipment solutions in North America. It offers custom vehicle manufacturing, equipment sales and rentals, aftermarket parts, and maintenance services, serving core infrastructure, utility, construction, and energy industry segments.

Innospec Inc., formerly known as Octel Corporation and Associated Octel Company, Ltd., is an American specialty chemical company. It comprises three business units:The Performance Chemicals business trades in the personal care, home care, agrochemical, mining and industrial markets. The Fuel Specialties business specializes in manufacturing and supplying fuel additives. The Oilfield Services business supplies drilling, completion and production chemicals.

CTOS vs IOSP — Head-to-Head

Bigger by revenue
IOSP
IOSP
1.1× larger
IOSP
$455.6M
$422.2M
CTOS
Growing faster (revenue YoY)
IOSP
IOSP
+6.1% gap
IOSP
-2.4%
-8.5%
CTOS
Higher net margin
IOSP
IOSP
14.6% more per $
IOSP
10.4%
-4.2%
CTOS
Faster 2-yr revenue CAGR
CTOS
CTOS
Annualised
CTOS
14.8%
-4.6%
IOSP

Income Statement — Q1 FY2026 vs Q4 FY2025

Metric
CTOS
CTOS
IOSP
IOSP
Revenue
$422.2M
$455.6M
Net Profit
$-17.8M
$47.4M
Gross Margin
20.3%
28.0%
Operating Margin
2.9%
10.3%
Net Margin
-4.2%
10.4%
Revenue YoY
-8.5%
-2.4%
Net Profit YoY
-333.7%
167.3%
EPS (diluted)
$-0.08
$1.90

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
CTOS
CTOS
IOSP
IOSP
Q1 26
$422.2M
Q4 25
$387.3M
$455.6M
Q3 25
$359.9M
$441.9M
Q2 25
$392.2M
$439.7M
Q1 25
$307.1M
$440.8M
Q4 24
$398.3M
$466.8M
Q3 24
$337.5M
$443.4M
Q2 24
$320.6M
$435.0M
Net Profit
CTOS
CTOS
IOSP
IOSP
Q1 26
$-17.8M
Q4 25
$20.9M
$47.4M
Q3 25
$-5.8M
$12.9M
Q2 25
$-28.4M
$23.5M
Q1 25
$-17.8M
$32.8M
Q4 24
$27.6M
$-70.4M
Q3 24
$-17.4M
$33.4M
Q2 24
$-24.5M
$31.2M
Gross Margin
CTOS
CTOS
IOSP
IOSP
Q1 26
20.3%
Q4 25
31.8%
28.0%
Q3 25
28.0%
26.4%
Q2 25
26.1%
28.0%
Q1 25
27.9%
28.4%
Q4 24
29.7%
29.2%
Q3 24
27.2%
28.0%
Q2 24
27.8%
29.2%
Operating Margin
CTOS
CTOS
IOSP
IOSP
Q1 26
2.9%
Q4 25
13.4%
10.3%
Q3 25
9.1%
1.3%
Q2 25
7.1%
7.8%
Q1 25
4.0%
9.6%
Q4 24
16.9%
8.8%
Q3 24
6.8%
10.3%
Q2 24
5.5%
9.4%
Net Margin
CTOS
CTOS
IOSP
IOSP
Q1 26
-4.2%
Q4 25
5.4%
10.4%
Q3 25
-1.6%
2.9%
Q2 25
-7.2%
5.3%
Q1 25
-5.8%
7.4%
Q4 24
6.9%
-15.1%
Q3 24
-5.2%
7.5%
Q2 24
-7.6%
7.2%
EPS (diluted)
CTOS
CTOS
IOSP
IOSP
Q1 26
$-0.08
Q4 25
$0.10
$1.90
Q3 25
$-0.03
$0.52
Q2 25
$-0.13
$0.94
Q1 25
$-0.08
$1.31
Q4 24
$0.11
$-2.80
Q3 24
$-0.07
$1.33
Q2 24
$-0.10
$1.24

Balance Sheet & Financial Strength

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

Metric
CTOS
CTOS
IOSP
IOSP
Cash + ST InvestmentsLiquidity on hand
$6.3M
$292.5M
Total DebtLower is stronger
$25.9M
Stockholders' EquityBook value
$809.1M
$1.3B
Total Assets
$3.4B
$1.8B
Debt / EquityLower = less leverage
0.03×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CTOS
CTOS
IOSP
IOSP
Q1 26
$6.3M
Q4 25
$6.3M
$292.5M
Q3 25
$13.1M
$270.8M
Q2 25
$5.3M
$266.6M
Q1 25
$5.4M
$299.8M
Q4 24
$3.8M
$289.2M
Q3 24
$8.4M
$303.8M
Q2 24
$8.1M
$240.2M
Total Debt
CTOS
CTOS
IOSP
IOSP
Q1 26
$25.9M
Q4 25
$1.6B
Q3 25
$1.6B
Q2 25
$1.6B
Q1 25
$1.6B
Q4 24
$1.5B
Q3 24
$1.6B
Q2 24
$1.5B
Stockholders' Equity
CTOS
CTOS
IOSP
IOSP
Q1 26
$809.1M
Q4 25
$809.1M
$1.3B
Q3 25
$784.7M
$1.3B
Q2 25
$790.1M
$1.3B
Q1 25
$813.4M
$1.3B
Q4 24
$861.3M
$1.2B
Q3 24
$837.5M
$1.2B
Q2 24
$856.7M
$1.2B
Total Assets
CTOS
CTOS
IOSP
IOSP
Q1 26
$3.4B
Q4 25
$3.4B
$1.8B
Q3 25
$3.5B
$1.8B
Q2 25
$3.6B
$1.8B
Q1 25
$3.5B
$1.8B
Q4 24
$3.5B
$1.7B
Q3 24
$3.6B
$1.8B
Q2 24
$3.5B
$1.7B
Debt / Equity
CTOS
CTOS
IOSP
IOSP
Q1 26
0.03×
Q4 25
2.03×
Q3 25
2.10×
Q2 25
2.04×
Q1 25
1.97×
Q4 24
1.77×
Q3 24
1.87×
Q2 24
1.79×

Cash Flow & Capital Efficiency

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

Metric
CTOS
CTOS
IOSP
IOSP
Operating Cash FlowLast quarter
$61.4M
Free Cash FlowOCF − Capex
$46.8M
FCF MarginFCF / Revenue
10.3%
Capex IntensityCapex / Revenue
3.2%
Cash ConversionOCF / Net Profit
1.30×
TTM Free Cash FlowTrailing 4 quarters
$88.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CTOS
CTOS
IOSP
IOSP
Q1 26
Q4 25
$47.3M
$61.4M
Q3 25
$81.5M
$39.3M
Q2 25
$125.7M
$9.3M
Q1 25
$55.6M
$28.3M
Q4 24
$82.1M
$25.7M
Q3 24
$16.5M
$73.5M
Q2 24
$37.8M
$4.7M
Free Cash Flow
CTOS
CTOS
IOSP
IOSP
Q1 26
Q4 25
$46.8M
Q3 25
$25.0M
Q2 25
$-3.7M
Q1 25
$19.9M
Q4 24
$13.6M
Q3 24
$65.8M
Q2 24
$-6.2M
FCF Margin
CTOS
CTOS
IOSP
IOSP
Q1 26
Q4 25
10.3%
Q3 25
5.7%
Q2 25
-0.8%
Q1 25
4.5%
Q4 24
2.9%
Q3 24
14.8%
Q2 24
-1.4%
Capex Intensity
CTOS
CTOS
IOSP
IOSP
Q1 26
Q4 25
3.2%
Q3 25
3.2%
Q2 25
3.0%
Q1 25
1.9%
Q4 24
2.6%
Q3 24
1.7%
Q2 24
2.5%
Cash Conversion
CTOS
CTOS
IOSP
IOSP
Q1 26
Q4 25
2.27×
1.30×
Q3 25
3.05×
Q2 25
0.40×
Q1 25
0.86×
Q4 24
2.98×
Q3 24
2.20×
Q2 24
0.15×

Financial Flow Comparison

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

Revenue Breakdown by Segment

CTOS
CTOS

Equipment sales$273.9M65%
Rental revenue$116.3M28%
Parts sales and services$32.1M8%

IOSP
IOSP

Refinery And Performance$147.0M32%
Personal Care$99.7M22%
Oilfield Services$93.1M20%
Other Fuel Specialties$47.1M10%
Other Performance Chemicals$40.0M9%
Home Care$28.7M6%

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