ENS vs. AYI

Last updated Apr 1, 2026

Compare and contrast key facts about EnerSys (ENS) and Acuity Brands, Inc. (AYI).

Performance

ENS vs. AYI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in EnerSys (ENS) and Acuity Brands, Inc. (AYI). The values are adjusted to include any dividend payments, if applicable.

ENS vs. AYI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ENS EnerSys	18.57%	60.28%	-7.57%	37.90%	-5.64%	-4.04%	12.19%	-2.57%	12.46%	-9.97%
AYI Acuity Brands, Inc.	-22.12%	23.53%	42.95%	24.06%	-21.55%	75.42%	-11.79%	20.54%	-34.44%	-23.55%

Fundamentals

Market Cap ENS : $6.54B AYI : $8.84B
EPS ENS : $8.16 AYI : $13.01
PE Ratio ENS : 21.28 AYI : 21.54
PEG Ratio ENS : 0.71 AYI : 1.74
PS Ratio ENS : 1.78 AYI : 1.95
PB Ratio ENS : 3.46 AYI : 3.17
Total Revenue (TTM) ENS : $3.74B AYI : $4.54B
Gross Profit (TTM) ENS : $1.11B AYI : $2.18B
EBITDA (TTM) ENS : $508.08M AYI : $636.30M

Returns By Period

In the year-to-date period, ENS achieves a 18.57% return, which is significantly higher than AYI's -22.12% return. Over the past 10 years, ENS has outperformed AYI with an annualized return of 13.12%, while AYI has yielded a comparatively lower 2.62% annualized return.

ENS

• 1D: 4.09%
• 1M: 4.73%
• YTD: 18.57%
• 6M: 54.31%
• 1Y: 91.32%
• 3Y*: 27.12%
• 5Y*: 14.17%
• 10Y*: 13.12%

AYI

• 1D: 2.86%
• 1M: -7.09%
• YTD: -22.12%
• 6M: -18.54%
• 1Y: 6.67%
• 3Y*: 15.61%
• 5Y*: 10.95%
• 10Y*: 2.62%

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

Return for Risk

ENS vs. AYI — Risk / Return Rank

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

ENS

ENS Risk / Return Rank: 91
ENS Sharpe Ratio Rank: 93
ENS Sortino Ratio Rank: 87
ENS Omega Ratio Rank: 91
ENS Calmar Ratio Rank: 92
ENS Martin Ratio Rank: 90

AYI

AYI Risk / Return Rank: 46
AYI Sharpe Ratio Rank: 49
AYI Sortino Ratio Rank: 42
AYI Omega Ratio Rank: 43
AYI Calmar Ratio Rank: 48
AYI Martin Ratio Rank: 50

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.

ENS vs. AYI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for EnerSys (ENS) and Acuity Brands, Inc. (AYI). 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.

	ENS	AYI	Difference
Sharpe ratio Return per unit of total volatility	2.28	0.19	+2.09
Sortino ratio Return per unit of downside risk	2.49	0.51	+1.99
Omega ratio Gain probability vs. loss probability	1.41	1.07	+0.34
Calmar ratio Return relative to maximum drawdown	4.39	0.23	+4.16
Martin ratio Return relative to average drawdown	10.88	0.66	+10.22
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ENS vs. AYI - Sharpe Ratio Comparison

The current ENS Sharpe Ratio is 2.28, which is higher than the AYI Sharpe Ratio of 0.19. The chart below compares the historical Sharpe Ratios of ENS and AYI, 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

	ENS	AYI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.28	0.19	+2.09
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.42	0.35	+0.07
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.36	0.07	+0.29
Sharpe Ratio (All Time) Calculated using the full available price history	0.33	0.37	-0.04

Correlation

The correlation between ENS and AYI is 0.50, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

ENS vs. AYI - Dividend Comparison

ENS's dividend yield for the trailing twelve months is around 0.59%, more than AYI's 0.25% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ENS EnerSys	0.59%	0.68%	1.01%	0.79%	0.95%	0.89%	0.84%	0.94%	0.90%	1.01%	0.90%	1.25%
AYI Acuity Brands, Inc.	0.25%	0.19%	0.21%	0.25%	0.31%	0.25%	0.43%	0.38%	0.45%	0.30%	0.23%	0.22%

Drawdowns

ENS vs. AYI - Drawdown Comparison

The maximum ENS drawdown since its inception was -83.95%, which is greater than AYI's maximum drawdown of -74.22%. Use the drawdown chart below to compare losses from any high point for ENS and AYI.

Drawdown Indicators

	ENS	AYI	Difference
Max Drawdown Largest peak-to-trough decline	-83.95%	-74.22%	-9.73%
Max Drawdown (1Y) Largest decline over 1 year	-20.08%	-31.52%	+11.44%
Max Drawdown (5Y) Largest decline over 5 years	-41.77%	-34.64%	-7.13%
Max Drawdown (10Y) Largest decline over 10 years	-56.27%	-74.22%	+17.95%
Current Drawdown Current decline from peak	-8.38%	-25.56%	+17.18%
Average Drawdown Average peak-to-trough decline	-18.14%	-23.16%	+5.02%
Ulcer Index Depth and duration of drawdowns from previous peaks	8.11%	10.92%	-2.81%

Volatility

ENS vs. AYI - Volatility Comparison

EnerSys (ENS) has a higher volatility of 11.99% compared to Acuity Brands, Inc. (AYI) at 10.92%. This indicates that ENS's price experiences larger fluctuations and is considered to be riskier than AYI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ENS	AYI	Difference
Volatility (1M) Calculated over the trailing 1-month period	11.99%	10.92%	+1.07%
Volatility (6M) Calculated over the trailing 6-month period	28.42%	24.82%	+3.60%
Volatility (1Y) Calculated over the trailing 1-year period	40.30%	34.40%	+5.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	33.82%	31.51%	+2.31%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	36.38%	36.91%	-0.53%

Financials

ENS vs. AYI - Profitability Comparison

The chart below illustrates the profitability comparison between EnerSys and Acuity Brands, Inc. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

ENS - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, EnerSys reported a gross profit of 276.32M and revenue of 919.13M. Therefore, the gross margin over that period was 30.1%.

AYI - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Acuity Brands, Inc. reported a gross profit of 553.80M and revenue of 1.14B. Therefore, the gross margin over that period was 48.4%.

ENS - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, EnerSys reported an operating income of 124.24M and revenue of 919.13M, resulting in an operating margin of 13.5%.

AYI - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Acuity Brands, Inc. reported an operating income of 160.40M and revenue of 1.14B, resulting in an operating margin of 14.0%.

ENS - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, EnerSys reported a net income of 90.37M and revenue of 919.13M, resulting in a net margin of 9.8%.

AYI - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Acuity Brands, Inc. reported a net income of 120.50M and revenue of 1.14B, resulting in a net margin of 10.5%.