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Side-by-side financial comparison of STEM, INC. (STEM) and TERAWULF INC. (WULF). Click either name above to swap in a different company.

STEM, INC. is the larger business by last-quarter revenue ($47.1M vs $26.1M, roughly 1.8× TERAWULF INC.). STEM, INC. runs the higher net margin — -33.9% vs -484.2%, a 450.3% gap on every dollar of revenue. On growth, STEM, INC. posted the faster year-over-year revenue change (-15.6% vs -25.3%). Over the past eight quarters, STEM, INC.'s revenue compounded faster (36.1% CAGR vs -21.5%).

StemCells, Inc. is a public biopharmaceutical company headquartered in Newark, California, that is developing purified human neural stem cells (HuCNS-SCs) in the hopes of treating central nervous system disorders and paralysis. StemCells' HuCNS-SCs have the ability to differentiate into the three main types of cells found in the central nervous system: neurons, astrocytes and oligodendrocytes.

TeraWulf Inc. is an American bitcoin mining company. Founded in 2021 and publicly listed on Nasdaq under the ticker WULF, it operates mining facilities in New York and Pennsylvania.

STEM vs WULF — Head-to-Head

Bigger by revenue
STEM
STEM
1.8× larger
STEM
$47.1M
$26.1M
WULF
Growing faster (revenue YoY)
STEM
STEM
+9.7% gap
STEM
-15.6%
-25.3%
WULF
Higher net margin
STEM
STEM
450.3% more per $
STEM
-33.9%
-484.2%
WULF
Faster 2-yr revenue CAGR
STEM
STEM
Annualised
STEM
36.1%
-21.5%
WULF

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
STEM
STEM
WULF
WULF
Revenue
$47.1M
$26.1M
Net Profit
$-16.0M
$-126.6M
Gross Margin
48.9%
27.7%
Operating Margin
-17.7%
-330.2%
Net Margin
-33.9%
-484.2%
Revenue YoY
-15.6%
-25.3%
Net Profit YoY
68.8%
-333.5%
EPS (diluted)
$-4.40
$-0.32

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
STEM
STEM
WULF
WULF
Q4 25
$47.1M
$26.1M
Q3 25
$38.2M
$50.6M
Q2 25
$38.4M
$47.6M
Q1 25
$32.5M
$34.4M
Q4 24
$55.8M
$35.0M
Q3 24
$29.3M
$27.1M
Q2 24
$34.0M
$35.6M
Q1 24
$25.5M
$42.4M
Net Profit
STEM
STEM
WULF
WULF
Q4 25
$-16.0M
$-126.6M
Q3 25
$-23.8M
$-455.1M
Q2 25
$202.5M
$-18.4M
Q1 25
$-25.0M
$-61.4M
Q4 24
$-51.1M
$-29.2M
Q3 24
$-148.3M
$-22.7M
Q2 24
$-582.3M
$-10.9M
Q1 24
$-72.3M
$-9.6M
Gross Margin
STEM
STEM
WULF
WULF
Q4 25
48.9%
27.7%
Q3 25
35.5%
57.2%
Q2 25
33.4%
53.6%
Q1 25
32.4%
28.6%
Q4 24
-4.4%
26.6%
Q3 24
21.2%
40.0%
Q2 24
27.6%
60.9%
Q1 24
-95.0%
66.0%
Operating Margin
STEM
STEM
WULF
WULF
Q4 25
-17.7%
-330.2%
Q3 25
-33.6%
-48.8%
Q2 25
-34.8%
-32.7%
Q1 25
-65.0%
-173.3%
Q4 24
-84.4%
-147.0%
Q3 24
-493.2%
-58.1%
Q2 24
-1705.5%
-19.0%
Q1 24
-267.0%
-5.5%
Net Margin
STEM
STEM
WULF
WULF
Q4 25
-33.9%
-484.2%
Q3 25
-62.2%
-899.7%
Q2 25
527.8%
-38.6%
Q1 25
-76.9%
-178.5%
Q4 24
-91.6%
-83.5%
Q3 24
-506.3%
-84.0%
Q2 24
-1712.6%
-30.6%
Q1 24
-283.9%
-22.7%
EPS (diluted)
STEM
STEM
WULF
WULF
Q4 25
$-4.40
$-0.32
Q3 25
$-2.84
$-1.13
Q2 25
$-1.79
$-0.05
Q1 25
$-0.15
$-0.16
Q4 24
$-15.29
$-0.09
Q3 24
$-18.24
$-0.06
Q2 24
$-71.81
$-0.03
Q1 24
$-0.46
$-0.03

Balance Sheet & Financial Strength

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

Metric
STEM
STEM
WULF
WULF
Cash + ST InvestmentsLiquidity on hand
$48.9M
$3.3B
Total DebtLower is stronger
$3.1B
Stockholders' EquityBook value
$-249.4M
$140.4M
Total Assets
$308.9M
$6.6B
Debt / EquityLower = less leverage
22.06×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
STEM
STEM
WULF
WULF
Q4 25
$48.9M
$3.3B
Q3 25
$43.1M
$711.3M
Q2 25
$40.8M
$90.0M
Q1 25
$58.6M
$218.2M
Q4 24
$56.3M
$274.1M
Q3 24
$75.4M
$23.9M
Q2 24
$89.6M
$104.1M
Q1 24
$112.8M
$45.8M
Total Debt
STEM
STEM
WULF
WULF
Q4 25
$3.1B
Q3 25
Q2 25
Q1 25
Q4 24
$0
Q3 24
$0
Q2 24
$72.3M
Q1 24
$99.4M
Stockholders' Equity
STEM
STEM
WULF
WULF
Q4 25
$-249.4M
$140.4M
Q3 25
$-235.7M
$247.3M
Q2 25
$-214.1M
$174.3M
Q1 25
$-417.5M
$170.4M
Q4 24
$-398.4M
$244.4M
Q3 24
$-344.1M
$372.6M
Q2 24
$-203.2M
$386.2M
Q1 24
$371.6M
$272.3M
Total Assets
STEM
STEM
WULF
WULF
Q4 25
$308.9M
$6.6B
Q3 25
$362.6M
$2.5B
Q2 25
$379.2M
$869.4M
Q1 25
$405.1M
$841.2M
Q4 24
$437.4M
$787.5M
Q3 24
$537.8M
$405.9M
Q2 24
$691.5M
$479.6M
Q1 24
$1.3B
$395.4M
Debt / Equity
STEM
STEM
WULF
WULF
Q4 25
22.06×
Q3 25
Q2 25
Q1 25
Q4 24
0.00×
Q3 24
0.00×
Q2 24
0.19×
Q1 24
0.37×

Cash Flow & Capital Efficiency

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

Metric
STEM
STEM
WULF
WULF
Operating Cash FlowLast quarter
$8.2M
$-123.2M
Free Cash FlowOCF − Capex
$-1.2B
FCF MarginFCF / Revenue
-4527.0%
Capex IntensityCapex / Revenue
4055.8%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-1.7B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
STEM
STEM
WULF
WULF
Q4 25
$8.2M
$-123.2M
Q3 25
$11.4M
$-36.7M
Q2 25
$-21.3M
$-54.8M
Q1 25
$8.5M
$56.5M
Q4 24
$-14.7M
$-24.4M
Q3 24
$-9.4M
$-20.9M
Q2 24
$-11.9M
$16.4M
Q1 24
$-621.0K
$22.8M
Free Cash Flow
STEM
STEM
WULF
WULF
Q4 25
$-1.2B
Q3 25
$-268.3M
Q2 25
$-174.8M
Q1 25
$-37.2M
Q4 24
$-292.4M
Q3 24
$-41.7M
Q2 24
$-30.2M
Q1 24
$-24.1M
FCF Margin
STEM
STEM
WULF
WULF
Q4 25
-4527.0%
Q3 25
-530.4%
Q2 25
-366.8%
Q1 25
-108.1%
Q4 24
-835.7%
Q3 24
-153.9%
Q2 24
-84.9%
Q1 24
-56.9%
Capex Intensity
STEM
STEM
WULF
WULF
Q4 25
4055.8%
Q3 25
457.8%
Q2 25
251.8%
Q1 25
272.3%
Q4 24
765.9%
Q3 24
76.6%
Q2 24
131.0%
Q1 24
110.7%
Cash Conversion
STEM
STEM
WULF
WULF
Q4 25
Q3 25
Q2 25
-0.11×
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

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

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