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Side-by-side financial comparison of INNOSPEC INC. (IOSP) and OLIN Corp (OLN). Click either name above to swap in a different company.

OLIN Corp is the larger business by last-quarter revenue ($1.7B vs $455.6M, roughly 3.7× INNOSPEC INC.). INNOSPEC INC. runs the higher net margin — 10.4% vs -8.6%, a 19.0% gap on every dollar of revenue. On growth, OLIN Corp posted the faster year-over-year revenue change (-0.4% vs -2.4%). Over the past eight quarters, OLIN Corp's revenue compounded faster (0.9% CAGR vs -4.6%).

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.

Olin Corporation is an American manufacturer of ammunition, chlorine, and sodium hydroxide. The company traces its roots to two companies, both founded in 1892: Franklin W. Olin's Equitable Powder Company and the Mathieson Alkali Works. Accidents at Olin chemical plants have exposed employees and nearby residents to health hazards.

IOSP vs OLN — Head-to-Head

Bigger by revenue
OLN
OLN
3.7× larger
OLN
$1.7B
$455.6M
IOSP
Growing faster (revenue YoY)
OLN
OLN
+2.0% gap
OLN
-0.4%
-2.4%
IOSP
Higher net margin
IOSP
IOSP
19.0% more per $
IOSP
10.4%
-8.6%
OLN
Faster 2-yr revenue CAGR
OLN
OLN
Annualised
OLN
0.9%
-4.6%
IOSP

Income Statement — Q4 2025 vs Q4 2025

Metric
IOSP
IOSP
OLN
OLN
Revenue
$455.6M
$1.7B
Net Profit
$47.4M
$-143.2M
Gross Margin
28.0%
1.9%
Operating Margin
10.3%
-9.4%
Net Margin
10.4%
-8.6%
Revenue YoY
-2.4%
-0.4%
Net Profit YoY
167.3%
-1517.8%
EPS (diluted)
$1.90
$-1.25

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
IOSP
IOSP
OLN
OLN
Q4 25
$455.6M
$1.7B
Q3 25
$441.9M
$1.7B
Q2 25
$439.7M
$1.8B
Q1 25
$440.8M
$1.6B
Q4 24
$466.8M
$1.7B
Q3 24
$443.4M
$1.6B
Q2 24
$435.0M
$1.6B
Q1 24
$500.2M
$1.6B
Net Profit
IOSP
IOSP
OLN
OLN
Q4 25
$47.4M
$-143.2M
Q3 25
$12.9M
$43.7M
Q2 25
$23.5M
$-2.8M
Q1 25
$32.8M
$1.2M
Q4 24
$-70.4M
$10.1M
Q3 24
$33.4M
$-25.2M
Q2 24
$31.2M
$72.3M
Q1 24
$41.4M
$47.8M
Gross Margin
IOSP
IOSP
OLN
OLN
Q4 25
28.0%
1.9%
Q3 25
26.4%
10.7%
Q2 25
28.0%
7.9%
Q1 25
28.4%
9.0%
Q4 24
29.2%
9.4%
Q3 24
28.0%
8.5%
Q2 24
29.2%
14.5%
Q1 24
31.1%
12.7%
Operating Margin
IOSP
IOSP
OLN
OLN
Q4 25
10.3%
-9.4%
Q3 25
1.3%
4.8%
Q2 25
7.8%
2.0%
Q1 25
9.6%
2.7%
Q4 24
8.8%
2.8%
Q3 24
10.3%
1.0%
Q2 24
9.4%
8.3%
Q1 24
10.1%
5.9%
Net Margin
IOSP
IOSP
OLN
OLN
Q4 25
10.4%
-8.6%
Q3 25
2.9%
2.6%
Q2 25
5.3%
-0.2%
Q1 25
7.4%
0.1%
Q4 24
-15.1%
0.6%
Q3 24
7.5%
-1.6%
Q2 24
7.2%
4.4%
Q1 24
8.3%
2.9%
EPS (diluted)
IOSP
IOSP
OLN
OLN
Q4 25
$1.90
$-1.25
Q3 25
$0.52
$0.37
Q2 25
$0.94
$-0.01
Q1 25
$1.31
$0.01
Q4 24
$-2.80
$0.10
Q3 24
$1.33
$-0.21
Q2 24
$1.24
$0.62
Q1 24
$1.65
$0.40

Balance Sheet & Financial Strength

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

Metric
IOSP
IOSP
OLN
OLN
Cash + ST InvestmentsLiquidity on hand
$292.5M
$167.6M
Total DebtLower is stronger
$2.8B
Stockholders' EquityBook value
$1.3B
$1.8B
Total Assets
$1.8B
$7.3B
Debt / EquityLower = less leverage
1.55×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
IOSP
IOSP
OLN
OLN
Q4 25
$292.5M
$167.6M
Q3 25
$270.8M
Q2 25
$266.6M
Q1 25
$299.8M
Q4 24
$289.2M
$175.6M
Q3 24
$303.8M
Q2 24
$240.2M
Q1 24
$270.1M
Total Debt
IOSP
IOSP
OLN
OLN
Q4 25
$2.8B
Q3 25
$3.0B
Q2 25
$3.0B
Q1 25
$3.0B
Q4 24
$2.7B
Q3 24
$2.8B
Q2 24
$2.8B
Q1 24
$2.7B
Stockholders' Equity
IOSP
IOSP
OLN
OLN
Q4 25
$1.3B
$1.8B
Q3 25
$1.3B
$2.0B
Q2 25
$1.3B
$2.0B
Q1 25
$1.3B
$2.0B
Q4 24
$1.2B
$2.0B
Q3 24
$1.2B
$2.1B
Q2 24
$1.2B
$2.1B
Q1 24
$1.2B
$2.2B
Total Assets
IOSP
IOSP
OLN
OLN
Q4 25
$1.8B
$7.3B
Q3 25
$1.8B
$7.6B
Q2 25
$1.8B
$7.7B
Q1 25
$1.8B
$7.7B
Q4 24
$1.7B
$7.6B
Q3 24
$1.8B
$7.5B
Q2 24
$1.7B
$7.7B
Q1 24
$1.7B
$7.6B
Debt / Equity
IOSP
IOSP
OLN
OLN
Q4 25
1.55×
Q3 25
1.52×
Q2 25
1.52×
Q1 25
1.50×
Q4 24
1.34×
Q3 24
1.34×
Q2 24
1.31×
Q1 24
1.24×

Cash Flow & Capital Efficiency

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

Metric
IOSP
IOSP
OLN
OLN
Operating Cash FlowLast quarter
$61.4M
$321.2M
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
IOSP
IOSP
OLN
OLN
Q4 25
$61.4M
$321.2M
Q3 25
$39.3M
$26.7M
Q2 25
$9.3M
$212.3M
Q1 25
$28.3M
$-86.0M
Q4 24
$25.7M
$141.7M
Q3 24
$73.5M
$189.9M
Q2 24
$4.7M
$90.6M
Q1 24
$80.6M
$81.0M
Free Cash Flow
IOSP
IOSP
OLN
OLN
Q4 25
$46.8M
Q3 25
$25.0M
$-44.4M
Q2 25
$-3.7M
Q1 25
$19.9M
$-147.4M
Q4 24
$13.6M
$90.7M
Q3 24
$65.8M
$146.6M
Q2 24
$-6.2M
$34.1M
Q1 24
$69.9M
$36.7M
FCF Margin
IOSP
IOSP
OLN
OLN
Q4 25
10.3%
Q3 25
5.7%
-2.6%
Q2 25
-0.8%
Q1 25
4.5%
-9.0%
Q4 24
2.9%
5.4%
Q3 24
14.8%
9.2%
Q2 24
-1.4%
2.1%
Q1 24
14.0%
2.2%
Capex Intensity
IOSP
IOSP
OLN
OLN
Q4 25
3.2%
Q3 25
3.2%
4.2%
Q2 25
3.0%
Q1 25
1.9%
3.7%
Q4 24
2.6%
3.1%
Q3 24
1.7%
2.7%
Q2 24
2.5%
3.4%
Q1 24
2.1%
2.7%
Cash Conversion
IOSP
IOSP
OLN
OLN
Q4 25
1.30×
Q3 25
3.05×
0.61×
Q2 25
0.40×
Q1 25
0.86×
-71.67×
Q4 24
14.03×
Q3 24
2.20×
Q2 24
0.15×
1.25×
Q1 24
1.95×
1.69×

Financial Flow Comparison

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

Revenue Breakdown by Segment

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%

OLN
OLN

Chlorinechlorinederivativesandothercoproducts$456.2M27%
Causticsoda$400.2M24%
Militaryandlawenforcement$304.6M18%
Epoxyresins$194.9M12%
Aromaticsandallylics$164.4M10%
Commercial$144.8M9%

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