GPC vs. IOSP

Last updated Apr 1, 2026

Compare and contrast key facts about Genuine Parts Company (GPC) and Innospec Inc. (IOSP).

Performance

GPC vs. IOSP - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Genuine Parts Company (GPC) and Innospec Inc. (IOSP). The values are adjusted to include any dividend payments, if applicable.

GPC vs. IOSP - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GPC Genuine Parts Company	-13.21%	8.70%	-13.22%	-18.12%	26.82%	43.39%	-2.19%	14.05%	4.11%	2.45%
IOSP Innospec Inc.	-4.60%	-28.94%	-9.57%	21.46%	15.25%	0.77%	-11.00%	69.43%	-11.48%	4.30%

Fundamentals

Market Cap GPC : $14.69B IOSP : $1.81B
EPS GPC : $0.47 IOSP : $4.68
PE Ratio GPC : 223.18 IOSP : 15.61
PS Ratio GPC : 0.61 IOSP : 1.02
PB Ratio GPC : 3.32 IOSP : 1.37
Total Revenue (TTM) GPC : $24.30B IOSP : $1.78B
Gross Profit (TTM) GPC : $8.94B IOSP : $492.40M
EBITDA (TTM) GPC : $753.70M IOSP : $179.90M

Returns By Period

In the year-to-date period, GPC achieves a -13.21% return, which is significantly lower than IOSP's -4.60% return. Over the past 10 years, GPC has underperformed IOSP with an annualized return of 3.55%, while IOSP has yielded a comparatively higher 6.71% annualized return.

GPC

• 1D: 1.34%
• 1M: -10.52%
• YTD: -13.21%
• 6M: -22.39%
• 1Y: -8.30%
• 3Y*: -11.58%
• 5Y*: 0.82%
• 10Y*: 3.55%

IOSP

• 1D: -0.23%
• 1M: -4.65%
• YTD: -4.60%
• 6M: -4.21%
• 1Y: -21.25%
• 3Y*: -9.31%
• 5Y*: -5.72%
• 10Y*: 6.71%

*Multi-year figures are annualized to reflect compound growth (CAGR)

Return for Risk

GPC vs. IOSP — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

GPC

GPC Risk / Return Rank: 30
GPC Sharpe Ratio Rank: 29
GPC Sortino Ratio Rank: 26
GPC Omega Ratio Rank: 26
GPC Calmar Ratio Rank: 35
GPC Martin Ratio Rank: 31

IOSP

IOSP Risk / Return Rank: 12
IOSP Sharpe Ratio Rank: 9
IOSP Sortino Ratio Rank: 10
IOSP Omega Ratio Rank: 12
IOSP Calmar Ratio Rank: 16
IOSP Martin Ratio Rank: 13

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

GPC vs. IOSP - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Genuine Parts Company (GPC) and Innospec Inc. (IOSP). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	GPC	IOSP	Difference
Sharpe ratio Return per unit of total volatility	-0.28	-0.81	+0.53
Sortino ratio Return per unit of downside risk	-0.19	-1.08	+0.90
Omega ratio Gain probability vs. loss probability	0.97	0.87	+0.10
Calmar ratio Return relative to maximum drawdown	-0.22	-0.73	+0.51
Martin ratio Return relative to average drawdown	-0.72	-1.40	+0.68
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GPC vs. IOSP - Sharpe Ratio Comparison

The current GPC Sharpe Ratio is -0.28, which is higher than the IOSP Sharpe Ratio of -0.81. The chart below compares the historical Sharpe Ratios of GPC and IOSP, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	GPC	IOSP	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.28	-0.81	+0.53
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.03	-0.22	+0.25
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.13	0.22	-0.09
Sharpe Ratio (All Time) Calculated using the full available price history	0.38	0.15	+0.23

Correlation

The correlation between GPC and IOSP is 0.40, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

GPC vs. IOSP - Dividend Comparison

GPC's dividend yield for the trailing twelve months is around 3.93%, more than IOSP's 2.34% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GPC Genuine Parts Company	3.93%	3.35%	3.43%	2.74%	2.06%	2.33%	3.15%	2.87%	3.00%	2.84%	2.75%	2.86%
IOSP Innospec Inc.	2.34%	2.23%	1.41%	1.14%	1.24%	1.28%	1.15%	0.99%	1.44%	1.09%	0.98%	1.12%

Drawdowns

GPC vs. IOSP - Drawdown Comparison

The maximum GPC drawdown since its inception was -54.89%, smaller than the maximum IOSP drawdown of -91.17%. Use the drawdown chart below to compare losses from any high point for GPC and IOSP.

Drawdown Indicators

	GPC	IOSP	Difference
Max Drawdown Largest peak-to-trough decline	-54.89%	-91.17%	+36.28%
Max Drawdown (1Y) Largest decline over 1 year	-34.84%	-29.61%	-5.23%
Max Drawdown (5Y) Largest decline over 5 years	-43.40%	-48.42%	+5.02%
Max Drawdown (10Y) Largest decline over 10 years	-54.89%	-48.42%	-6.47%
Current Drawdown Current decline from peak	-37.90%	-42.84%	+4.94%
Average Drawdown Average peak-to-trough decline	-10.17%	-28.61%	+18.44%
Ulcer Index Depth and duration of drawdowns from previous peaks	10.77%	15.42%	-4.65%

Volatility

GPC vs. IOSP - Volatility Comparison

Genuine Parts Company (GPC) has a higher volatility of 8.83% compared to Innospec Inc. (IOSP) at 8.38%. This indicates that GPC's price experiences larger fluctuations and is considered to be riskier than IOSP based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GPC	IOSP	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.83%	8.38%	+0.45%
Volatility (6M) Calculated over the trailing 6-month period	23.36%	17.40%	+5.96%
Volatility (1Y) Calculated over the trailing 1-year period	29.91%	26.37%	+3.54%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.62%	26.71%	-0.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	27.93%	31.28%	-3.35%

Financials

GPC vs. IOSP - Profitability Comparison

The chart below illustrates the profitability comparison between Genuine Parts Company and Innospec Inc. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

GPC - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Genuine Parts Company reported a gross profit of 2.10B and revenue of 6.01B. Therefore, the gross margin over that period was 35.0%.

IOSP - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Innospec Inc. reported a gross profit of 127.40M and revenue of 455.60M. Therefore, the gross margin over that period was 28.0%.

GPC - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Genuine Parts Company reported an operating income of -38.43M and revenue of 6.01B, resulting in an operating margin of -0.6%.

IOSP - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Innospec Inc. reported an operating income of 21.60M and revenue of 455.60M, resulting in an operating margin of 4.7%.

GPC - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Genuine Parts Company reported a net income of -609.50M and revenue of 6.01B, resulting in a net margin of -10.1%.

IOSP - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Innospec Inc. reported a net income of 47.40M and revenue of 455.60M, resulting in a net margin of 10.4%.