ROCK vs. DIOD

Last updated Apr 1, 2026

Compare and contrast key facts about Gibraltar Industries, Inc. (ROCK) and Diodes Incorporated (DIOD).

Performance

ROCK vs. DIOD - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Gibraltar Industries, Inc. (ROCK) and Diodes Incorporated (DIOD). The values are adjusted to include any dividend payments, if applicable.

ROCK vs. DIOD - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ROCK Gibraltar Industries, Inc.	-19.36%	-16.06%	-25.42%	72.14%	-31.19%	-7.31%	42.62%	41.73%	7.85%	-20.77%
DIOD Diodes Incorporated	38.35%	-19.99%	-23.41%	5.75%	-30.66%	55.76%	25.07%	74.74%	12.52%	11.69%

Fundamentals

Market Cap ROCK : $1.19B DIOD : $3.16B
EPS ROCK : -$1.01 DIOD : $1.43
PS Ratio ROCK : 1.05 DIOD : 2.14
PB Ratio ROCK : 1.25 DIOD : 1.68
Total Revenue (TTM) ROCK : $1.14B DIOD : $1.48B
Gross Profit (TTM) ROCK : $305.19M DIOD : $462.44M
EBITDA (TTM) ROCK : $144.70M DIOD : $191.47M

Returns By Period

In the year-to-date period, ROCK achieves a -19.36% return, which is significantly lower than DIOD's 38.35% return. Over the past 10 years, ROCK has underperformed DIOD with an annualized return of 3.49%, while DIOD has yielded a comparatively higher 12.86% annualized return.

ROCK

• 1D: 0.94%
• 1M: -12.34%
• YTD: -19.36%
• 6M: -36.51%
• 1Y: -32.03%
• 3Y*: -6.32%
• 5Y*: -15.71%
• 10Y*: 3.49%

DIOD

• 1D: 6.11%
• 1M: 0.04%
• YTD: 38.35%
• 6M: 28.28%
• 1Y: 58.12%
• 3Y*: -9.72%
• 5Y*: -3.75%
• 10Y*: 12.86%

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

Return for Risk

ROCK vs. DIOD — Risk / Return Rank

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

ROCK

ROCK Risk / Return Rank: 14
ROCK Sharpe Ratio Rank: 13
ROCK Sortino Ratio Rank: 15
ROCK Omega Ratio Rank: 15
ROCK Calmar Ratio Rank: 18
ROCK Martin Ratio Rank: 10

DIOD

DIOD Risk / Return Rank: 75
DIOD Sharpe Ratio Rank: 74
DIOD Sortino Ratio Rank: 73
DIOD Omega Ratio Rank: 73
DIOD Calmar Ratio Rank: 78
DIOD Martin Ratio Rank: 77

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.

ROCK vs. DIOD - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Gibraltar Industries, Inc. (ROCK) and Diodes Incorporated (DIOD). 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.

	ROCK	DIOD	Difference
Sharpe ratio Return per unit of total volatility	-0.68	0.99	-1.67
Sortino ratio Return per unit of downside risk	-0.75	1.73	-2.48
Omega ratio Gain probability vs. loss probability	0.90	1.23	-0.33
Calmar ratio Return relative to maximum drawdown	-0.69	2.10	-2.79
Martin ratio Return relative to average drawdown	-1.48	5.12	-6.60
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ROCK vs. DIOD - Sharpe Ratio Comparison

The current ROCK Sharpe Ratio is -0.68, which is lower than the DIOD Sharpe Ratio of 0.99. The chart below compares the historical Sharpe Ratios of ROCK and DIOD, 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

	ROCK	DIOD	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.68	0.99	-1.67
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.41	-0.08	-0.32
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.09	0.30	-0.21
Sharpe Ratio (All Time) Calculated using the full available price history	0.11	0.29	-0.18

Correlation

The correlation between ROCK and DIOD is 0.28, 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

ROCK vs. DIOD - Dividend Comparison

Neither ROCK nor DIOD has paid dividends to shareholders.

Tickers have no history of dividend payments

Drawdowns

ROCK vs. DIOD - Drawdown Comparison

The maximum ROCK drawdown since its inception was -88.34%, roughly equal to the maximum DIOD drawdown of -90.09%. Use the drawdown chart below to compare losses from any high point for ROCK and DIOD.

Drawdown Indicators

	ROCK	DIOD	Difference
Max Drawdown Largest peak-to-trough decline	-88.34%	-90.09%	+1.75%
Max Drawdown (1Y) Largest decline over 1 year	-47.89%	-27.44%	-20.45%
Max Drawdown (5Y) Largest decline over 5 years	-61.18%	-69.52%	+8.34%
Max Drawdown (10Y) Largest decline over 10 years	-63.23%	-69.52%	+6.29%
Current Drawdown Current decline from peak	-60.52%	-39.28%	-21.24%
Average Drawdown Average peak-to-trough decline	-32.10%	-33.44%	+1.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	22.33%	11.24%	+11.09%

Volatility

ROCK vs. DIOD - Volatility Comparison

The current volatility for Gibraltar Industries, Inc. (ROCK) is 12.98%, while Diodes Incorporated (DIOD) has a volatility of 17.52%. This indicates that ROCK experiences smaller price fluctuations and is considered to be less risky than DIOD based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ROCK	DIOD	Difference
Volatility (1M) Calculated over the trailing 1-month period	12.98%	17.52%	-4.54%
Volatility (6M) Calculated over the trailing 6-month period	39.41%	43.36%	-3.95%
Volatility (1Y) Calculated over the trailing 1-year period	47.29%	58.83%	-11.54%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	38.86%	45.36%	-6.50%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	38.75%	42.68%	-3.93%

Financials

ROCK vs. DIOD - Profitability Comparison

The chart below illustrates the profitability comparison between Gibraltar Industries, Inc. and Diodes Incorporated over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

ROCK - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Gibraltar Industries, Inc. reported a gross profit of 56.91M and revenue of 225.03M. Therefore, the gross margin over that period was 25.3%.

DIOD - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Diodes Incorporated reported a gross profit of 121.93M and revenue of 391.58M. Therefore, the gross margin over that period was 31.1%.

ROCK - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Gibraltar Industries, Inc. reported an operating income of 17.79M and revenue of 225.03M, resulting in an operating margin of 7.9%.

DIOD - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Diodes Incorporated reported an operating income of 13.21M and revenue of 391.58M, resulting in an operating margin of 3.4%.

ROCK - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Gibraltar Industries, Inc. reported a net income of 11.80M and revenue of 225.03M, resulting in a net margin of 5.2%.

DIOD - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Diodes Incorporated reported a net income of 10.20M and revenue of 391.58M, resulting in a net margin of 2.6%.