Acuity Brands [AYI] vs Plug Power [PLUG] Detailed Stock Comparison

Acuity Brands Inc.

NYSE
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Plug Power Inc.

NASDAQ
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TLDR: Quick Comparison Summary

Based on 21 vital metrics comparison: Acuity Brands Inc. wins in 17 metrics, Plug Power Inc. wins in 1 metrics, with 0 ties. Acuity Brands Inc. appears stronger overall.

View Metrics Details

Vital Metrics Comparison

Metric Acuity Brands Inc. Plug Power Inc. Better
P/E Ratio (TTM) 21.74 N/A N/A
Price-to-Book Ratio 3.16 4.39 Acuity Brands Inc.
Debt-to-Equity Ratio 28.45 99.39 Acuity Brands Inc.
PEG Ratio 0.82 -14.97 Acuity Brands Inc.
EV/EBITDA 12.33 -7.60 Acuity Brands Inc.
Profit Margin (TTM) 9.37% -229.83% Acuity Brands Inc.
Operating Margin (TTM) 13.06% -65.39% Acuity Brands Inc.
EBITDA Margin (TTM) 13.06% N/A N/A
Return on Equity 16.03% -120.50% Acuity Brands Inc.
Return on Assets (TTM) 8.33% -14.52% Acuity Brands Inc.
Free Cash Flow (TTM) $533.00M $-661.48M Acuity Brands Inc.
Dividend Yield 0.23% N/A N/A
1-Year Return 11.92% 113.95% Plug Power Inc.
Price-to-Sales Ratio (TTM) 1.98 6.05 Acuity Brands Inc.
Enterprise Value $9.46B $5.13B Acuity Brands Inc.
EV/Revenue Ratio 2.06 7.23 Acuity Brands Inc.
Gross Profit Margin (TTM) 49.29% 2.42% Acuity Brands Inc.
Revenue per Share (TTM) $149 $1 Acuity Brands Inc.
Earnings per Share (Diluted) $13.63 $-1.42 Acuity Brands Inc.
Beta (Stock Volatility) 1.43 1.79 Acuity Brands Inc.
Short % of Float 2.98% 24.51% Acuity Brands Inc.

Acuity Brands Inc. vs Plug Power Inc. Stock Performance Analysis

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AYI
PLUG

Performance Comparison

Short-term Returns

Stock1D1W1M3M6MYTD
Acuity Brands Inc.1.78%2.13%7.42%14.37%-16.21%-18.96%
Plug Power Inc.1.45%-12.23%-25.93%25.00%26.13%25.56%

Long-term Returns

Stock1Y3Y5Y10Y15Y20Y
Acuity Brands Inc.11.92%78.65%66.50%21.53%428.71%706.40%
Plug Power Inc.113.95%-73.89%-90.54%57.71%17.95%-94.47%

Performance & Financial Health Analysis: Acuity Brands Inc. vs Plug Power Inc.

MetricAYIPLUG
Market Information
Market Cap i$8.87B$4.29B
Market Cap CategoryMid capMid cap
10 Day Avg. Volume i469,03475,508,939
90 Day Avg. Volume i489,65570,754,336
Last Close$302.53$2.80
52 Week Range$257.04 - $380.17$1.03 - $4.58
% from 52W High-20.42%-38.86%
All-Time High$380.17 (Jan 05, 2026)$1,565.00 (Jan 24, 2000)
% from All-Time High-20.42%-99.82%
Growth Metrics
Quarterly Revenue Growth0.05%0.18%
Quarterly Earnings Growth0.25%0.18%
Financial Health
Profit Margin (TTM) i0.09%-2.30%
Operating Margin (TTM) i0.13%-0.65%
Return on Equity (TTM) i0.16%-1.21%
Debt to Equity (MRQ) i28.4599.39
Cash & Liquidity
Book Value per Share (MRQ)$93.76$0.70
Cash per Share (MRQ)$9.05$0.27
Operating Cash Flow (TTM) i$639.70M$-535,835,008
Levered Free Cash Flow (TTM) i$430.21M$-351,780,128
Dividends
Last 12-Month Dividend Yield i0.23%N/A
Last 12-Month Dividend i$0.71N/A

Valuation & Enterprise Metrics Analysis: Acuity Brands Inc. vs Plug Power Inc.

MetricAYI (Apr 24, 2026)PLUG (Apr 21, 2026)
Price Ratios
P/E Ratio (TTM) i21.74N/A
Forward P/E i13.93-14.97
PEG Ratio i0.82-14.97
Price to Sales (TTM) i1.986.05
Price to Book (MRQ) i3.164.39
Market Capitalization
Market Capitalization i$8.87B$4.29B
Enterprise Value i$9.46B$5.13B
Enterprise Value Metrics
Enterprise to Revenue i2.067.23
Enterprise to EBITDA i12.33-7.60
Risk & Other Metrics
Beta i1.431.79
Book Value per Share (MRQ) i$93.76$0.70

Financial Statements Comparison: Acuity Brands Inc. vs Plug Power Inc.

Financial Metrics

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Revenue

Operating Margin

Profit Margin

Long Term Debt

Income Flow Analysis

Financial Statements Comparison

Income Statement

MetricAYI (2025)PLUG (2025)
Revenue/Sales i4.35B709.92M
Cost of Goods Sold i2.27B951.96M
COGS % of Revenue i52.2%134.1%
Gross Profit i2.08B-242.04M
Gross Margin i47.8%-34.1%
Research & Development i140.20M57.96M
Operating Income (EBIT) i593.60M-679.57M
Operating Margin i13.7%-95.7%
EBITDA i706.60M-892.41M
EBITDA Margin i16.3%-125.7%
Pre-Tax Income i500.20M-1.69B
Pre-Tax Income % of Revenue i11.5%-238.5%
Income Tax i103.60M356,000
Income Tax % of Revenue i2.4%0.1%
Net Income (Profit) i396.60M-1.69B
Profit Margin i9.1%-238.6%

Balance Sheet & Liquidity Metrics

MetricAYI (2025)PLUG (2025)
Cash & Equivalents i422.50M368.54M
Total Current Assets i1.65B1.41B
Total Current Assets % of Revenue i38.0%198.7%
Total Current Liabilities i845.80M610.59M
Total Current Liabilities % of Revenue i19.5%86.0%
Long-Term Debt i981.10M836.46M
Long-Term Debt % of Revenue i22.6%117.8%
Total Shareholders Equity i2.72B1.00B
Retained Earnings i4.29B-8.23B
Retained Earnings % of Revenue i98.6%-1,158.7%
Property, Plant & Equipment i97.40M548.57M

Cash Flow Statement Comparison

MetricAYI (2025)PLUG (2025)
Operating Cash Flow i568.10M-1.61B
Operating Cash Flow % of Revenue i13.1%-226.9%
Capital Expenditures i-68.40M-125.64M
Free Cash Flow i533.00M-661.48M
FCF Margin i12.3%-93.2%
Debt Repayment i-200.00M-713.53M
Common Stock Repurchase i-118.50MN/A

Short Interest & Institutional Ownership Analysis

MetricAYIPLUG
Shares Short i780,329339.72M
Short Ratio i1.544.43
Short % of Float i2.98%24.51%
Shares Outstanding i30.46M1.39B
Float Shares i29.92M1.33B
% Held by Insiders i0.43%4.53%
% Held by Institutions i99.32%50.85%
% Held by Public i0.25%44.62%

Dividend Analysis & Yield Comparison: Acuity Brands Inc. vs Plug Power Inc.

MetricAYIPLUG
Last 12-Month Dividend i$0.71N/A
Last 12-Month Dividend Yield i0.23%N/A
3-Year Avg Annual Dividend i$0.62N/A
3-Year Avg Dividend Yield i0.06%N/A
3-Year Total Dividends i$1.87N/A
Ex-Dividend DateFeb 02, 2026N/A