DIOD vs. ROCK

Last updated Apr 1, 2026

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

Performance

DIOD vs. ROCK - Performance Comparison

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

DIOD vs. ROCK - Yearly Performance Comparison

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

Fundamentals

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

Returns By Period

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

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%

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%

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

Return for Risk

DIOD vs. ROCK — Risk / Return Rank

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

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

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

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.

DIOD vs. ROCK - Risk-Adjusted Trends Comparison

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

	DIOD	ROCK	Difference
Sharpe ratio Return per unit of total volatility	0.99	-0.68	+1.67
Sortino ratio Return per unit of downside risk	1.73	-0.75	+2.48
Omega ratio Gain probability vs. loss probability	1.23	0.90	+0.33
Calmar ratio Return relative to maximum drawdown	2.10	-0.69	+2.79
Martin ratio Return relative to average drawdown	5.12	-1.48	+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.

DIOD vs. ROCK - Sharpe Ratio Comparison

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

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

Correlation

The correlation between DIOD and ROCK 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

DIOD vs. ROCK - Dividend Comparison

Neither DIOD nor ROCK has paid dividends to shareholders.

Tickers have no history of dividend payments

Drawdowns

DIOD vs. ROCK - Drawdown Comparison

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

Drawdown Indicators

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

Volatility

DIOD vs. ROCK - Volatility Comparison

Diodes Incorporated (DIOD) has a higher volatility of 17.52% compared to Gibraltar Industries, Inc. (ROCK) at 12.98%. This indicates that DIOD's price experiences larger fluctuations and is considered to be riskier than ROCK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

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

Financials

DIOD vs. ROCK - Profitability Comparison

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

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 - 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 - 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 - 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 - 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%.

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%.