AMPX vs ENS vs NRGV Stock Comparison

Amprius Technologies, EnerSys and Energy Vault Holdings Prices as of Oct 23, 2026 Peers: Industry group
ENS EnerSys
$165.99 -7.6% 1M +37.0% 1Y
Market cap
$6.18B
P/E
17.5x
Revenue (TTM)
$3.79B
Div. yield
–
Energy Storage Industrials
7 wins

Head to Head

9 decided of 12

EnerSys leads on 7 of the 12 questions below (EnerSys 7, Energy Vault Holdings 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAMPXENSNRGVLeader
Larger companyMarket capitalisation $1.20B $6.18B $463.96M ENS
Cheaper on earningsLower P/E, profitable companies only -31.2x 17.5x -4.2x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 11.6x — –
Faster revenue growthRevenue growth, trailing twelve months +143.6% +3.7% +336.8% NRGV
More profitableNet margin, trailing twelve months -35.2% 9.3% -48.6% ENS
Better return on capitalReturn on invested capital — 13.8% -32.8% ENS
Less leveragedLower net debt / EBITDA — 0.8x -2.2x NRGV
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -29.8% +37.0% -24.6% ENS
Better 5-year returnAnnualised price return, 5 years — +16.7%/yr -23.8%/yr ENS
Less volatileAnnualised volatility, 1 year 100.3% 42.3% 102.4% ENS
Higher overall scoreMean of the five percentile scores vs peers 52/100 82/100 33/100 ENS

Percentile Scorecard

AMPXENSNRGV

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisAMPXENSNRGV
Valuation 43 #35 of 61 92 #6 of 61 27 #45 of 61
Growth 46 #32 of 58 60 #24 of 58 53 #28 of 58
Profitability 46 #30 of 55 100 #1 of 55 39 #34 of 55
Financial Health 91 #7 of 71 60 #29 of 71 16 #60 of 71
Shareholder Returns 33 #21 of 31 97 #2 of 31 30 #22 of 31
Overall 52 82 33
  • AMPX ranked among 71 companies in Clean Energy Equipment
  • ENS ranked among 71 companies in Clean Energy Equipment
  • NRGV ranked among 71 companies in Clean Energy Equipment

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodAMPXENSNRGVSPY
1 month -15.8%-7.6%-42.7% -1.0%
3 months -11.4%-13.0%-11.8% +2.9%
6 months -60.4%-20.7%-43.0% +6.4%
Year to date +3.8%+13.1%-44.9% +11.4%
1 year -29.8%+37.0%-24.6% +13.1%
3 years +206.7%+88.2%+23.9% +79.4%
3 years, per year +45.3%+23.5%+7.4% +21.5%
5 years —+116.2%-74.4% +67.7%
5 years, per year —+16.7%-23.8% +10.9%
10 years —+152.6%— +255.2%
10 years, per year —+9.7%— +13.5%

Risk

MeasureAMPXENSNRGVSPY
Volatility, 1Y 100.3%42.3%102.4% 12.7%
Downside volatility, 1Y 106.0%45.3%107.6% 12.7%
Beta vs S&P 500, 1Y 3.431.743.17 1.00
Return / volatility, 1Y -0.300.88-0.24 1.03
Max drawdown, 5Y -94.5%-33.0%-97.1% -25.4%
From 52-week high -64.3%-31.8%-60.9% -2.5%
52-week high $22.91$243.34$6.49 $779.14
52-week low $7.59$120.88$2.51 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleAMPXENSNRGV
P/E now vs peer median -30.6xmedian 24.1x 17.2xmedian 24.1x -4.1xmedian 24.1x
P/S now vs peer median 11.0xmedian 2.2x 1.6xmedian 2.2x 2.0xmedian 2.2x
EV/EBITDA now vs peer median -30.1xmedian 17.4x 10.7xmedian 17.4x -9.0xmedian 17.4x
P/FCF now vs peer median -20.5xmedian 27.4x 8.4xmedian 27.4x -3.2xmedian 27.4x
P/B now vs peer median 9.5xmedian 1.8x 3.1xmedian 1.8x 66.7xmedian 1.8x
PEG now vs peer median -4.07median 0.76 0.76median 0.76 -0.58median 0.76

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsAMPXENSNRGV
Revenue $109.23M $3.79B $225.87M
Gross profit $24.31M $1.16B $50.76M
Operating income -$41.15M $491.39M -$74.19M
Net income -$36.54M $352.55M -$109.74M
Free cash flow -$58.44M $717.31M -$144.74M
R&D $13.16M – $11.87M
EPS (diluted) $-0.27 $9.37 $-0.62
Cash & equivalents $74.52M $530.66M $93.04M
Total debt – $1.04B $243.01M
Shares (diluted) 143.47M 37.63M 178.39M
Enterprise value $896.64M $4.37B $224.72M

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricAMPXENSNRGV
P/E -30.6x 17.2x -4.1x
P/FCF -20.5x 8.4x -3.2x
P/Operating cash flow -22.6x 7.8x -4.5x
P/S 11.0x 1.6x 2.0x
P/B 9.5x 3.1x 66.7x
P/Tangible book 9.5x 3.7x -1,352x
EV/EBITDA -30.1x 10.7x -9.0x
EV/EBIT -27.3x 13.3x -8.2x
EV/Revenue 10.3x 1.7x 2.7x
EV/FCF -19.2x 9.1x -4.2x
EV/Operating cash flow -21.2x 8.4x -5.9x
PEG (3Y EPS CAGR) -4.07 0.76 -0.58

Growth

14 metrics
MetricAMPXENSNRGV
Revenue growth (1Y) 143.6% 3.7% 336.8%
Revenue CAGR (3Y) 203.2% 0.7% 13.8%
Gross profit growth (1Y) 390.2% 4.6% 385.2%
Gross profit CAGR (3Y) 65.0% 9.0% 31.4%
Operating income growth (1Y) -4.2% 6.9% 41.4%
Operating income CAGR (3Y) -10.1% 15.7% 15.6%
Net income growth (1Y) 3.9% 0.4% 24.1%
Net income CAGR (3Y) -8.2% 18.5% -0.1%
EPS growth (1Y) 14.2% 4.9% 33.2%
EPS CAGR (3Y) 7.5% 22.7% 7.1%
Operating cash flow growth (1Y) -55.5% 209.6% -227.0%
Operating cash flow CAGR (3Y) -37.2% 22.1% -5.1%
Free cash flow growth (1Y) -75.3% 439.5% -71.5%
Free cash flow CAGR (3Y) -33.4% 27.6% -9.9%

Profitability

14 metrics
MetricAMPXENSNRGV
Gross margin 22.3% 30.5% 22.5%
EBITDA margin -34.1% 16.1% -29.8%
Operating margin -37.7% 13.0% -32.8%
Pretax margin -37.7% 11.0% -45.9%
Net margin -35.2% 9.3% -48.6%
FCF margin -53.5% 18.9% -64.1%
Operating cash flow margin -48.4% 20.5% -45.4%
Return on equity -35.0% 18.2% -588.1%
Return on assets -29.4% 8.9% -32.8%
Return on invested capital – 13.8% -32.8%
Return on capital employed -33.8% 15.3% -40.7%
Asset turnover 0.8x 1.0x 0.7x
Cash conversion (OCF / net income) 1.4x 2.2x 0.9x
Stock comp / revenue 7.6% 0.7% 13.2%

Financial Health

11 metrics
MetricAMPXENSNRGV
Debt / assets – 26.3% 65.6%
Debt / equity – 0.5x 35.4x
Net debt / EBITDA – 0.8x -2.2x
Debt / FCF – 1.4x -1.7x
Liabilities / assets 15.8% 50.1% 98.1%
Equity / assets 84.2% 49.9% 1.9%
Interest coverage – 9.9x -5.5x
Current ratio 7.2x 2.8x 1.2x
Quick ratio 6.3x 1.4x 0.8x
Cash ratio 4.1x 0.7x 0.6x
Altman Z-score 29.09 4.62 -1.28

Shareholder Returns

7 metrics
MetricAMPXENSNRGV
Dividend yield – 0.6% –
Net buyback yield -2.3% 3.7% -2.5%
Shareholder yield -2.3% 4.3% -2.5%
Payout ratio (earnings) – – –
Payout ratio (FCF) – – –
Dividend growth (1Y) – – –
Dividend CAGR (3Y) – – –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusAMPXENSNRGV
Forward P/E – 11.6xFY2026 –
EPS, next fiscal year $-0.09FY2026 $14.25FY2026 $-0.37FY2026
EPS growth, next FY – +34.9%FY2026 –
EPS growth, the year after – -1.3% –
Revenue, next fiscal year $150.37MFY2026 $4.09BFY2026 $309.42MFY2026
Revenue growth, next FY +106.0%FY2026 +9.1%FY2026 +51.9%FY2026
Revenue growth, the year after +50.8% +4.8% +56.8%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAMPXENSNRGV
Held by institutions 67.4% 98.2% 58.6%
Institutions holding 259 550 174
Change in shares held, QoQ +14.9% +3.3% +31.6%
Institutions buying 173 310 120
Institutions selling 63 187 30
Buyers to sellers 2.75 1.66 4.00

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

AMPXENSNRGV
AMPX 1.00 0.44 0.44
ENS 0.44 1.00 0.49
NRGV 0.44 0.49 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AMPX, ENS and NRGV?

EnerSys (ENS) is the largest by market capitalisation: Amprius Technologies (AMPX) $1.20B, EnerSys (ENS) $6.18B, Energy Vault Holdings (NRGV) $463.96M.

Which company is growing faster?

Energy Vault Holdings (NRGV) grew revenue fastest over the trailing twelve months: Amprius Technologies (AMPX) +143.6%, EnerSys (ENS) +3.7%, Energy Vault Holdings (NRGV) +336.8%.

Which company is more profitable?

EnerSys (ENS) has the highest net margin (Amprius Technologies (AMPX) -35.2%, EnerSys (ENS) 9.3%, Energy Vault Holdings (NRGV) -48.6%). On return on invested capital, EnerSys (ENS) leads (EnerSys (ENS) 13.8%, Energy Vault Holdings (NRGV) -32.8%).

Which stock has performed better?

Over the past year EnerSys (ENS) returned the most: Amprius Technologies (AMPX) -29.8%, EnerSys (ENS) +37.0%, Energy Vault Holdings (NRGV) -24.6%. Over five years, EnerSys (ENS) compounded fastest (EnerSys (ENS) +16.7%/yr, Energy Vault Holdings (NRGV) -23.8%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, EnerSys (ENS) has been the steadiest (Amprius Technologies (AMPX) 100.3%, EnerSys (ENS) 42.3%, Energy Vault Holdings (NRGV) 102.4%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, AMPX, ENS and NRGV?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, EnerSys (ENS) leads on 7. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.