vs

Side-by-side financial comparison of ASP Isotopes Inc. (ASPI) and Energy Vault Holdings, Inc. (NRGV). Click either name above to swap in a different company.

Energy Vault Holdings, Inc. is the larger business by last-quarter revenue ($33.3M vs $16.7M, roughly 2.0× ASP Isotopes Inc.). On growth, Energy Vault Holdings, Inc. posted the faster year-over-year revenue change (2678.9% vs 1295.7%). Energy Vault Holdings, Inc. produced more free cash flow last quarter ($-27.2M vs $-47.4M).

ASP Isotopes Inc. is a specialty materials firm focused on developing and producing high-purity custom isotopes. Its products serve key sectors including nuclear medicine, targeted cancer therapies, advanced energy, and industrial research, with customers across North America, Europe and Asia Pacific.

Energy Vault is a global energy storage company specializing in gravity and kinetic energy based, long-duration energy storage products. Energy Vault's primary product is a gravity battery to store energy by stacking heavy blocks made of composite material into a structure, capturing potential energy in the elevation gain of the blocks. When demand for electricity is high, these blocks are lowered with the motors functioning as generators and delivering electricity to the grid.

ASPI vs NRGV — Head-to-Head

Bigger by revenue
NRGV
NRGV
2.0× larger
NRGV
$33.3M
$16.7M
ASPI
Growing faster (revenue YoY)
NRGV
NRGV
+1383.2% gap
NRGV
2678.9%
1295.7%
ASPI
More free cash flow
NRGV
NRGV
$20.3M more FCF
NRGV
$-27.2M
$-47.4M
ASPI

Income Statement — Q4 FY2025 vs Q3 FY2025

Metric
ASPI
ASPI
NRGV
NRGV
Revenue
$16.7M
$33.3M
Net Profit
$-26.8M
Gross Margin
12.5%
27.0%
Operating Margin
-52.8%
Net Margin
-80.5%
Revenue YoY
1295.7%
2678.9%
Net Profit YoY
-586.8%
-0.8%
EPS (diluted)
$-0.16

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
ASPI
ASPI
NRGV
NRGV
Q4 25
$16.7M
Q3 25
$4.9M
$33.3M
Q2 25
$8.5M
Q1 25
$8.5M
Q4 24
$33.5M
Q3 24
$1.2M
Q2 24
$3.8M
Q1 24
$7.8M
Net Profit
ASPI
ASPI
NRGV
NRGV
Q4 25
Q3 25
$-12.9M
$-26.8M
Q2 25
$-34.9M
Q1 25
$-21.1M
Q4 24
$-61.8M
Q3 24
$-26.6M
Q2 24
$-26.2M
Q1 24
$-21.1M
Gross Margin
ASPI
ASPI
NRGV
NRGV
Q4 25
12.5%
Q3 25
8.7%
27.0%
Q2 25
29.6%
Q1 25
57.1%
Q4 24
7.7%
Q3 24
40.3%
Q2 24
27.8%
Q1 24
26.7%
Operating Margin
ASPI
ASPI
NRGV
NRGV
Q4 25
Q3 25
-306.1%
-52.8%
Q2 25
-330.7%
Q1 25
-244.8%
Q4 24
-150.6%
Q3 24
-2258.1%
Q2 24
-739.7%
Q1 24
-317.4%
Net Margin
ASPI
ASPI
NRGV
NRGV
Q4 25
Q3 25
-263.7%
-80.5%
Q2 25
-410.3%
Q1 25
-247.7%
Q4 24
-184.7%
Q3 24
-2217.9%
Q2 24
-694.6%
Q1 24
-272.4%
EPS (diluted)
ASPI
ASPI
NRGV
NRGV
Q4 25
Q3 25
$-0.15
$-0.16
Q2 25
$-0.22
Q1 25
$-0.14
Q4 24
$-0.41
Q3 24
$-0.18
Q2 24
$-0.18
Q1 24
$-0.14

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
ASPI
ASPI
NRGV
NRGV
Cash + ST InvestmentsLiquidity on hand
$333.3M
$32.7M
Total DebtLower is stronger
$14.4M
Stockholders' EquityBook value
$204.2M
$80.5M
Total Assets
$498.0M
$281.9M
Debt / EquityLower = less leverage
0.07×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ASPI
ASPI
NRGV
NRGV
Q4 25
$333.3M
Q3 25
$113.9M
$32.7M
Q2 25
$22.3M
Q1 25
$21.2M
Q4 24
$30.0M
Q3 24
$51.1M
Q2 24
$106.8M
Q1 24
$135.8M
Total Debt
ASPI
ASPI
NRGV
NRGV
Q4 25
$14.4M
Q3 25
$13.9M
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24
Stockholders' Equity
ASPI
ASPI
NRGV
NRGV
Q4 25
$204.2M
Q3 25
$74.1M
$80.5M
Q2 25
$90.3M
Q1 25
$114.9M
Q4 24
$126.3M
Q3 24
$179.1M
Q2 24
$195.6M
Q1 24
$212.3M
Total Assets
ASPI
ASPI
NRGV
NRGV
Q4 25
$498.0M
Q3 25
$225.9M
$281.9M
Q2 25
$248.8M
Q1 25
$217.4M
Q4 24
$183.9M
Q3 24
$252.9M
Q2 24
$255.6M
Q1 24
$285.9M
Debt / Equity
ASPI
ASPI
NRGV
NRGV
Q4 25
0.07×
Q3 25
0.19×
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
ASPI
ASPI
NRGV
NRGV
Operating Cash FlowLast quarter
$-37.8M
$-11.7M
Free Cash FlowOCF − Capex
$-47.4M
$-27.2M
FCF MarginFCF / Revenue
-284.7%
-81.5%
Capex IntensityCapex / Revenue
57.9%
46.4%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-75.1M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ASPI
ASPI
NRGV
NRGV
Q4 25
$-37.8M
Q3 25
$-8.9M
$-11.7M
Q2 25
$15.4M
Q1 25
$-2.7M
Q4 24
$-34.8M
Q3 24
$-9.2M
Q2 24
$-12.8M
Q1 24
$947.0K
Free Cash Flow
ASPI
ASPI
NRGV
NRGV
Q4 25
$-47.4M
Q3 25
$-12.0M
$-27.2M
Q2 25
$6.9M
Q1 25
$-9.5M
Q4 24
$-45.4M
Q3 24
$-36.4M
Q2 24
$-25.1M
Q1 24
$-7.8M
FCF Margin
ASPI
ASPI
NRGV
NRGV
Q4 25
-284.7%
Q3 25
-245.5%
-81.5%
Q2 25
81.6%
Q1 25
-111.5%
Q4 24
-135.5%
Q3 24
-3039.9%
Q2 24
-665.1%
Q1 24
-100.8%
Capex Intensity
ASPI
ASPI
NRGV
NRGV
Q4 25
57.9%
Q3 25
64.4%
46.4%
Q2 25
98.8%
Q1 25
79.5%
Q4 24
31.5%
Q3 24
2273.1%
Q2 24
325.8%
Q1 24
113.0%

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Related Comparisons