IOSP vs. RPM: A Head-to-Head Stock Comparison

Updated on October 15, 2025

Here’s a clear look at IOSP and RPM, comparing key factors like historical performance, profitability, financial strength, growth, dividend, and valuation.

Company Profile

Symbol	IOSP	RPM
Company Name	Innospec Inc.	RPM International Inc.
Country	United States	United States
GICS Sector	Materials	Materials
GICS Industry	Chemicals	Chemicals
Market Capitalization	1.95 billion USD	14.50 billion USD
Exchange	NasdaqGS	NYSE
Listing Date	May 13, 1998	March 17, 1980
Security Type	Common Stock	Common Stock

Historical Performance

This chart compares the performance of IOSP and RPM by tracking the growth of an initial $10,000 investment in each. Use the tabs to select the desired time period. Data is adjusted for dividends and splits.

IOSP vs. RPM: Growth of a $10,000 investment over the past one year.

Historical Performance at a Glance

Symbol	IOSP	RPM
5-Day Price Return	-0.14%	-2.71%
13-Week Price Return	-12.03%	-0.89%
26-Week Price Return	-11.25%	0.47%
52-Week Price Return	-29.34%	-12.43%
Month-to-Date Return	1.74%	-4.04%
Year-to-Date Return	-28.68%	-8.08%
10-Day Avg. Volume	0.24M	1.15M
3-Month Avg. Volume	0.21M	0.83M
3-Month Volatility	22.56%	26.24%
Beta	0.94	1.13

Profitability

Return on Equity (TTM)

IOSP

1.54%

Chemicals Industry

Max: 29.52%
Q3: 13.18%
Median: 6.53%
Q1: 1.35%
Min: -11.86%

IOSP’s Return on Equity of 1.54% is on par with the norm for the Chemicals industry, indicating its profitability relative to shareholder equity is typical for the sector.

RPM

24.31%

Chemicals Industry

Max: 29.52%
Q3: 13.18%
Median: 6.53%
Q1: 1.35%
Min: -11.86%

In the upper quartile for the Chemicals industry, RPM’s Return on Equity of 24.31% signals a highly effective use of shareholder capital to drive profitability compared to most of its peers.

IOSP vs. RPM: A comparison of their Return on Equity (TTM) against the Chemicals industry benchmark.

Net Profit Margin (TTM)

IOSP

1.08%

Chemicals Industry

Max: 20.20%
Q3: 9.15%
Median: 3.94%
Q1: 0.60%
Min: -10.43%

IOSP’s Net Profit Margin of 1.08% is aligned with the median group of its peers in the Chemicals industry. This indicates its ability to convert revenue into profit is typical for the sector.

RPM

9.16%

Chemicals Industry

Max: 20.20%
Q3: 9.15%
Median: 3.94%
Q1: 0.60%
Min: -10.43%

A Net Profit Margin of 9.16% places RPM in the upper quartile for the Chemicals industry, signifying strong profitability and more effective cost management than most of its peers.

IOSP vs. RPM: A comparison of their Net Profit Margin (TTM) against the Chemicals industry benchmark.

Operating Profit Margin (TTM)

IOSP

0.44%

Chemicals Industry

Max: 27.33%
Q3: 13.82%
Median: 7.98%
Q1: 3.60%
Min: -7.61%

IOSP’s Operating Profit Margin of 0.44% is in the lower quartile for the Chemicals industry. This indicates weaker profitability from core operations, which may stem from inefficiencies or competitive pressures on pricing.

RPM

11.59%

Chemicals Industry

Max: 27.33%
Q3: 13.82%
Median: 7.98%
Q1: 3.60%
Min: -7.61%

RPM’s Operating Profit Margin of 11.59% is around the midpoint for the Chemicals industry, indicating that its efficiency in managing core business operations is typical for the sector.

IOSP vs. RPM: A comparison of their Operating Profit Margin (TTM) against the Chemicals industry benchmark.

Profitability at a Glance

Symbol	IOSP	RPM
Return on Equity (TTM)	1.54%	24.31%
Return on Assets (TTM)	1.09%	9.49%
Net Profit Margin (TTM)	1.08%	9.16%
Operating Profit Margin (TTM)	0.44%	11.59%
Gross Profit Margin (TTM)	28.40%	41.33%

Financial Strength

Current Ratio (MRQ)

IOSP

2.87

Chemicals Industry

Max: 3.72
Q3: 2.38
Median: 1.69
Q1: 1.42
Min: 0.75

IOSP’s Current Ratio of 2.87 is in the upper quartile for the Chemicals industry. This signifies a strong liquidity position, suggesting the company is well-equipped to cover its immediate liabilities compared to its peers.

RPM

2.26

Chemicals Industry

Max: 3.72
Q3: 2.38
Median: 1.69
Q1: 1.42
Min: 0.75

RPM’s Current Ratio of 2.26 aligns with the median group of the Chemicals industry, indicating that its short-term liquidity is in line with its sector peers.

IOSP vs. RPM: A comparison of their Current Ratio (MRQ) against the Chemicals industry benchmark.

Debt-to-Equity Ratio (MRQ)

IOSP

0.00

Chemicals Industry

Max: 1.53
Q3: 1.00
Median: 0.69
Q1: 0.41
Min: 0.00

Falling into the lower quartile for the Chemicals industry, IOSP’s Debt-to-Equity Ratio of 0.00 points to a conservative financing strategy. This results in lower financial risk but potentially limits strategic investments compared to more leveraged competitors.

RPM

0.87

Chemicals Industry

Max: 1.53
Q3: 1.00
Median: 0.69
Q1: 0.41
Min: 0.00

RPM’s Debt-to-Equity Ratio of 0.87 is typical for the Chemicals industry, indicating its use of leverage is in line with the sector norm. This suggests a balanced approach to its capital structure.

IOSP vs. RPM: A comparison of their Debt-to-Equity Ratio (MRQ) against the Chemicals industry benchmark.

Interest Coverage Ratio (TTM)

IOSP

25.61

Chemicals Industry

Max: 56.43
Q3: 26.33
Median: 8.84
Q1: 2.54
Min: -9.39

IOSP’s Interest Coverage Ratio of 25.61 is positioned comfortably within the norm for the Chemicals industry, indicating a standard and healthy capacity to cover its interest payments.

RPM

11.94

Chemicals Industry

Max: 56.43
Q3: 26.33
Median: 8.84
Q1: 2.54
Min: -9.39

RPM’s Interest Coverage Ratio of 11.94 is positioned comfortably within the norm for the Chemicals industry, indicating a standard and healthy capacity to cover its interest payments.

IOSP vs. RPM: A comparison of their Interest Coverage Ratio (TTM) against the Chemicals industry benchmark.

Financial Strength at a Glance

Symbol	IOSP	RPM
Current Ratio (MRQ)	2.87	2.26
Quick Ratio (MRQ)	1.80	1.32
Debt-to-Equity Ratio (MRQ)	0.00	0.87
Interest Coverage Ratio (TTM)	25.61	11.94

Growth

Revenue Growth

IOSP vs. RPM: A side-by-side comparison of their Revenue Growth for the MRQ (YoY), TTM (YoY), 3-Year CAGR, and 5-Year CAGR periods.

EPS Growth

IOSP vs. RPM: A side-by-side comparison of their EPS Growth for the MRQ (YoY), TTM (YoY), 3-Year CAGR, and 5-Year CAGR periods.

Dividend

Dividend Yield (TTM)

IOSP

2.09%

Chemicals Industry

Max: 6.59%
Q3: 3.67%
Median: 2.44%
Q1: 1.36%
Min: 0.00%

IOSP’s Dividend Yield of 2.09% is consistent with its peers in the Chemicals industry, providing a dividend return that is standard for its sector.

RPM

1.80%

Chemicals Industry

Max: 6.59%
Q3: 3.67%
Median: 2.44%
Q1: 1.36%
Min: 0.00%

RPM’s Dividend Yield of 1.80% is consistent with its peers in the Chemicals industry, providing a dividend return that is standard for its sector.

IOSP vs. RPM: A comparison of their Dividend Yield (TTM) against the Chemicals industry benchmark.

Dividend Payout Ratio (TTM)

IOSP

88.51%

Chemicals Industry

Max: 192.00%
Q3: 108.95%
Median: 57.38%
Q1: 27.28%
Min: 0.00%

IOSP’s Dividend Payout Ratio of 88.51% is within the typical range for the Chemicals industry, suggesting a balanced approach between shareholder payouts and company reinvestment.

RPM

37.93%

Chemicals Industry

Max: 192.00%
Q3: 108.95%
Median: 57.38%
Q1: 27.28%
Min: 0.00%

RPM’s Dividend Payout Ratio of 37.93% is within the typical range for the Chemicals industry, suggesting a balanced approach between shareholder payouts and company reinvestment.

IOSP vs. RPM: A comparison of their Dividend Payout Ratio (TTM) against the Chemicals industry benchmark.

Dividend at a Glance

Symbol	IOSP	RPM
Dividend Yield (TTM)	2.09%	1.80%
Dividend Payout Ratio (TTM)	88.51%	37.93%

Valuation

Price-to-Earnings Ratio (TTM)

IOSP

100.45

Chemicals Industry

Max: 49.43
Q3: 32.03
Median: 21.32
Q1: 14.93
Min: 8.66

At 100.45, IOSP’s P/E Ratio is exceptionally high, exceeding the typical maximum for the Chemicals industry. This suggests the stock may be significantly overvalued compared to its peers and implies high market expectations that could be difficult to meet.

RPM

21.04

Chemicals Industry

Max: 49.43
Q3: 32.03
Median: 21.32
Q1: 14.93
Min: 8.66

RPM’s P/E Ratio of 21.04 is within the middle range for the Chemicals industry. This suggests its valuation is in line with the sector average, representing neither a significant premium nor a discount compared to its peers.

IOSP vs. RPM: A comparison of their Price-to-Earnings Ratio (TTM) against the Chemicals industry benchmark.

Price-to-Sales Ratio (TTM)

IOSP

1.08

Chemicals Industry

Max: 3.90
Q3: 2.23
Median: 1.00
Q1: 0.55
Min: 0.15

IOSP’s P/S Ratio of 1.08 aligns with the market consensus for the Chemicals industry. This suggests its valuation, based on sales, is seen as standard and is on par with its competitors.

RPM

1.93

Chemicals Industry

Max: 3.90
Q3: 2.23
Median: 1.00
Q1: 0.55
Min: 0.15

RPM’s P/S Ratio of 1.93 aligns with the market consensus for the Chemicals industry. This suggests its valuation, based on sales, is seen as standard and is on par with its competitors.

IOSP vs. RPM: A comparison of their Price-to-Sales Ratio (TTM) against the Chemicals industry benchmark.

Price-to-Book Ratio (MRQ)

IOSP

1.62

Chemicals Industry

Max: 5.01
Q3: 2.59
Median: 1.50
Q1: 0.95
Min: 0.30

IOSP’s P/B Ratio of 1.62 is within the conventional range for the Chemicals industry. This shows a balanced market view, where the stock’s price is neither at a significant premium nor a discount to the book value of its peers.

RPM

5.26

Chemicals Industry

Max: 5.01
Q3: 2.59
Median: 1.50
Q1: 0.95
Min: 0.30

At 5.26, RPM’s P/B Ratio is at an extreme premium to the Chemicals industry. This signifies that the market’s valuation is heavily reliant on future potential rather than its current net asset value, which can be a high-risk proposition.

IOSP vs. RPM: A comparison of their Price-to-Book Ratio (MRQ) against the Chemicals industry benchmark.

Valuation at a Glance

Symbol	IOSP	RPM
Price-to-Earnings Ratio (TTM)	100.45	21.04
Price-to-Sales Ratio (TTM)	1.08	1.93
Price-to-Book Ratio (MRQ)	1.62	5.26
Price-to-Free Cash Flow Ratio (TTM)	24.45	28.08