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Side-by-side financial comparison of MP Materials Corp. (MP) and Solid Power, Inc. (SLDP). Click either name above to swap in a different company.

MP Materials Corp. is the larger business by last-quarter revenue ($52.7M vs $3.6M, roughly 14.5× Solid Power, Inc.). On growth, MP Materials Corp. posted the faster year-over-year revenue change (-13.6% vs -18.6%). Solid Power, Inc. produced more free cash flow last quarter ($-23.0M vs $-109.3M). Over the past eight quarters, MP Materials Corp.'s revenue compounded faster (4.0% CAGR vs -21.9%).

MP Materials Corp. is a U.S.-based producer of rare earth materials. The company owns and operates the Mountain Pass mine in California, the only active rare earth mining and processing facility in the Western Hemisphere, producing essential materials for electric vehicles, wind turbines, and defense applications.

Solid Energy was the largest coal mining company in New Zealand and is a state owned enterprise of the New Zealand Government.

MP vs SLDP — Head-to-Head

Bigger by revenue
MP
MP
14.5× larger
MP
$52.7M
$3.6M
SLDP
Growing faster (revenue YoY)
MP
MP
+5.0% gap
MP
-13.6%
-18.6%
SLDP
More free cash flow
SLDP
SLDP
$86.3M more FCF
SLDP
$-23.0M
$-109.3M
MP
Faster 2-yr revenue CAGR
MP
MP
Annualised
MP
4.0%
-21.9%
SLDP

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
MP
MP
SLDP
SLDP
Revenue
$52.7M
$3.6M
Net Profit
$9.4M
Gross Margin
Operating Margin
-7.0%
-730.1%
Net Margin
17.9%
Revenue YoY
-13.6%
-18.6%
Net Profit YoY
142.2%
EPS (diluted)
$0.07
$-0.15

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
MP
MP
SLDP
SLDP
Q4 25
$52.7M
$3.6M
Q3 25
$53.6M
$3.7M
Q2 25
$57.4M
$6.5M
Q1 25
$60.8M
$6.0M
Q4 24
$61.0M
$4.5M
Q3 24
$62.9M
$4.7M
Q2 24
$31.3M
$5.1M
Q1 24
$48.7M
$6.0M
Net Profit
MP
MP
SLDP
SLDP
Q4 25
$9.4M
Q3 25
$-41.8M
$-25.9M
Q2 25
$-30.9M
$-25.3M
Q1 25
$-22.6M
$-15.2M
Q4 24
$-22.3M
Q3 24
$-25.5M
$-22.4M
Q2 24
$-34.1M
$-22.3M
Q1 24
$16.5M
$-21.2M
Operating Margin
MP
MP
SLDP
SLDP
Q4 25
-7.0%
-730.1%
Q3 25
-125.2%
-654.4%
Q2 25
-76.5%
-398.9%
Q1 25
-57.2%
-399.4%
Q4 24
-72.1%
-561.1%
Q3 24
-62.8%
-593.2%
Q2 24
-171.1%
-530.8%
Q1 24
-66.6%
-433.1%
Net Margin
MP
MP
SLDP
SLDP
Q4 25
17.9%
Q3 25
-78.0%
-693.1%
Q2 25
-53.8%
-390.7%
Q1 25
-37.2%
-251.8%
Q4 24
-36.6%
Q3 24
-40.5%
-482.0%
Q2 24
-108.9%
-438.9%
Q1 24
33.9%
-356.2%
EPS (diluted)
MP
MP
SLDP
SLDP
Q4 25
$0.07
$-0.15
Q3 25
$-0.24
$-0.14
Q2 25
$-0.19
$-0.14
Q1 25
$-0.14
$-0.08
Q4 24
$-0.12
$-0.16
Q3 24
$-0.16
$-0.13
Q2 24
$-0.21
$-0.13
Q1 24
$-0.08
$-0.12

Balance Sheet & Financial Strength

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

Metric
MP
MP
SLDP
SLDP
Cash + ST InvestmentsLiquidity on hand
$1.2B
$250.8M
Total DebtLower is stronger
$998.7M
Stockholders' EquityBook value
$2.0B
$415.7M
Total Assets
$3.9B
$455.1M
Debt / EquityLower = less leverage
0.50×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
MP
MP
SLDP
SLDP
Q4 25
$1.2B
$250.8M
Q3 25
$1.1B
$251.2M
Q2 25
$261.5M
$230.9M
Q1 25
$198.3M
$240.9M
Q4 24
$282.4M
$118.2M
Q3 24
$284.4M
$132.0M
Q2 24
$295.6M
$140.5M
Q1 24
$296.5M
$146.6M
Total Debt
MP
MP
SLDP
SLDP
Q4 25
$998.7M
Q3 25
$997.3M
Q2 25
$910.8M
Q1 25
$909.8M
Q4 24
$908.7M
Q3 24
Q2 24
Q1 24
Stockholders' Equity
MP
MP
SLDP
SLDP
Q4 25
$2.0B
$415.7M
Q3 25
$2.0B
$381.2M
Q2 25
$1.0B
$370.6M
Q1 25
$1.0B
$397.1M
Q4 24
$1.1B
$410.3M
Q3 24
$1.1B
$439.4M
Q2 24
$1.1B
$456.8M
Q1 24
$1.1B
$479.4M
Total Assets
MP
MP
SLDP
SLDP
Q4 25
$3.9B
$455.1M
Q3 25
$3.8B
$416.1M
Q2 25
$2.3B
$398.0M
Q1 25
$2.4B
$419.4M
Q4 24
$2.3B
$448.3M
Q3 24
$2.3B
$470.9M
Q2 24
$2.4B
$492.6M
Q1 24
$2.4B
$516.2M
Debt / Equity
MP
MP
SLDP
SLDP
Q4 25
0.50×
Q3 25
0.51×
Q2 25
0.90×
Q1 25
0.88×
Q4 24
0.86×
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
MP
MP
SLDP
SLDP
Operating Cash FlowLast quarter
$-46.9M
$-18.4M
Free Cash FlowOCF − Capex
$-109.3M
$-23.0M
FCF MarginFCF / Revenue
-207.4%
-633.0%
Capex IntensityCapex / Revenue
118.5%
126.5%
Cash ConversionOCF / Net Profit
-4.97×
TTM Free Cash FlowTrailing 4 quarters
$-328.1M
$-83.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
MP
MP
SLDP
SLDP
Q4 25
$-46.9M
$-18.4M
Q3 25
$-42.0M
$-14.3M
Q2 25
$-3.7M
$-14.4M
Q1 25
$-63.2M
$-26.3M
Q4 24
$30.5M
$-13.9M
Q3 24
$-6.8M
$-9.9M
Q2 24
$30.8M
$-11.1M
Q1 24
$-41.1M
$-29.1M
Free Cash Flow
MP
MP
SLDP
SLDP
Q4 25
$-109.3M
$-23.0M
Q3 25
$-92.5M
$-14.8M
Q2 25
$-32.7M
$-17.1M
Q1 25
$-93.7M
$-28.6M
Q4 24
$-11.2M
$-18.6M
Q3 24
$-53.3M
$-12.6M
Q2 24
$-15.6M
$-15.5M
Q1 24
$-93.0M
$-33.1M
FCF Margin
MP
MP
SLDP
SLDP
Q4 25
-207.4%
-633.0%
Q3 25
-172.8%
-397.6%
Q2 25
-56.9%
-264.2%
Q1 25
-154.0%
-476.1%
Q4 24
-18.3%
-416.5%
Q3 24
-84.7%
-271.5%
Q2 24
-50.1%
-305.8%
Q1 24
-191.0%
-556.3%
Capex Intensity
MP
MP
SLDP
SLDP
Q4 25
118.5%
126.5%
Q3 25
94.3%
15.3%
Q2 25
50.5%
41.5%
Q1 25
50.1%
39.1%
Q4 24
68.3%
105.5%
Q3 24
73.8%
59.7%
Q2 24
148.7%
86.8%
Q1 24
106.5%
68.1%
Cash Conversion
MP
MP
SLDP
SLDP
Q4 25
-4.97×
Q3 25
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24
-2.49×

Financial Flow Comparison

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

Revenue Breakdown by Segment

MP
MP

Materials Segment$35.6M68%
Other$17.1M32%

SLDP
SLDP

Segment breakdown not available.

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