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Side-by-side financial comparison of ACORN ENERGY, INC. (ACFN) and Pulmatrix, Inc. (PULM). Click either name above to swap in a different company.
ACORN ENERGY, INC. is the larger business by last-quarter revenue ($2.4M vs $1.6M, roughly 1.5× Pulmatrix, Inc.). ACORN ENERGY, INC. runs the higher net margin — 45.2% vs -374.4%, a 419.6% gap on every dollar of revenue. On growth, Pulmatrix, Inc. posted the faster year-over-year revenue change (-15.8% vs -32.6%). Over the past eight quarters, ACORN ENERGY, INC.'s revenue compounded faster (5.6% CAGR vs -8.9%).
Acorn Energy Inc. is a NASDAQ-listed conglomerate investing in electricity generation and security. It was founded by George Morgenstern in 1984 as Decision Systems, Inc. and was taken public by Laidlaw Securities. The name was later changed to Data Systems and Software Inc. John Moore became CEO in 2006 and changed the name to Acorn Factor and later to Acorn Energy.
Pulmatrix, Inc. is a clinical-stage biopharmaceutical firm specializing in developing innovative inhaled therapies for severe respiratory diseases including chronic obstructive pulmonary disease, cystic fibrosis and idiopathic pulmonary fibrosis. It uses its proprietary dry powder platform to improve inhaled medication efficacy and safety, advancing its product candidate pipeline via partnerships with global pharmaceutical players.
ACFN vs PULM — Head-to-Head
Income Statement — Q4 FY2025 vs Q2 FY2024
| Metric | | |
|---|---|---|
| Revenue | $2.4M | $1.6M |
| Net Profit | $1.1M | $-5.8M |
| Gross Margin | 80.1% | — |
| Operating Margin | 11.7% | -380.2% |
| Net Margin | 45.2% | -374.4% |
| Revenue YoY | -32.6% | -15.8% |
| Net Profit YoY | -79.5% | -52.3% |
| EPS (diluted) | $0.42 | $-1.59 |
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.
| Q4 25 | $2.4M | — | ||
| Q3 25 | $2.5M | — | ||
| Q2 25 | $3.5M | — | ||
| Q1 25 | $3.1M | — | ||
| Q4 24 | $3.5M | — | ||
| Q3 24 | $3.0M | — | ||
| Q2 24 | $2.3M | $1.6M | ||
| Q1 24 | $2.1M | $5.9M |
| Q4 25 | $1.1M | — | ||
| Q3 25 | $252.0K | — | ||
| Q2 25 | $720.0K | — | ||
| Q1 25 | $464.0K | — | ||
| Q4 24 | $5.2M | — | ||
| Q3 24 | $725.0K | — | ||
| Q2 24 | $271.0K | $-5.8M | ||
| Q1 24 | $65.0K | $825.0K |
| Q4 25 | 80.1% | — | ||
| Q3 25 | 78.5% | — | ||
| Q2 25 | 74.9% | — | ||
| Q1 25 | 75.1% | — | ||
| Q4 24 | 72.4% | — | ||
| Q3 24 | 71.7% | — | ||
| Q2 24 | 73.2% | — | ||
| Q1 24 | 74.6% | — |
| Q4 25 | 11.7% | — | ||
| Q3 25 | 6.4% | — | ||
| Q2 25 | 26.9% | — | ||
| Q1 25 | 19.5% | — | ||
| Q4 24 | 23.9% | — | ||
| Q3 24 | 24.8% | — | ||
| Q2 24 | 11.3% | -380.2% | ||
| Q1 24 | 3.7% | 12.7% |
| Q4 25 | 45.2% | — | ||
| Q3 25 | 10.2% | — | ||
| Q2 25 | 20.4% | — | ||
| Q1 25 | 15.0% | — | ||
| Q4 24 | 148.3% | — | ||
| Q3 24 | 23.8% | — | ||
| Q2 24 | 11.9% | -374.4% | ||
| Q1 24 | 3.0% | 14.0% |
| Q4 25 | $0.42 | — | ||
| Q3 25 | $0.10 | — | ||
| Q2 25 | $0.28 | — | ||
| Q1 25 | $0.19 | — | ||
| Q4 24 | $2.08 | — | ||
| Q3 24 | $0.29 | — | ||
| Q2 24 | $0.11 | $-1.59 | ||
| Q1 24 | $0.03 | $0.23 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $4.5M | $12.4M |
| Total DebtLower is stronger | — | — |
| Stockholders' EquityBook value | $8.3M | $13.3M |
| Total Assets | $13.3M | $15.8M |
| Debt / EquityLower = less leverage | — | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $4.5M | — | ||
| Q3 25 | $4.2M | — | ||
| Q2 25 | $3.3M | — | ||
| Q1 25 | $2.6M | — | ||
| Q4 24 | $2.3M | — | ||
| Q3 24 | $2.2M | — | ||
| Q2 24 | $1.5M | $12.4M | ||
| Q1 24 | $1.4M | $16.3M |
| Q4 25 | $8.3M | — | ||
| Q3 25 | $7.2M | — | ||
| Q2 25 | $6.9M | — | ||
| Q1 25 | $6.1M | — | ||
| Q4 24 | $5.5M | — | ||
| Q3 24 | $288.0K | — | ||
| Q2 24 | $-451.0K | $13.3M | ||
| Q1 24 | $-733.0K | $19.0M |
| Q4 25 | $13.3M | — | ||
| Q3 25 | $12.4M | — | ||
| Q2 25 | $12.5M | — | ||
| Q1 25 | $11.1M | — | ||
| Q4 24 | $10.6M | — | ||
| Q3 24 | $5.4M | — | ||
| Q2 24 | $4.8M | $15.8M | ||
| Q1 24 | $4.9M | $30.4M |
Cash Flow & Capital Efficiency
How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.
| Metric | | |
|---|---|---|
| Operating Cash FlowLast quarter | $295.0K | $-3.7M |
| Free Cash FlowOCF − Capex | — | $-3.9M |
| FCF MarginFCF / Revenue | — | -252.6% |
| Capex IntensityCapex / Revenue | — | 15.7% |
| Cash ConversionOCF / Net Profit | 0.27× | — |
| TTM Free Cash FlowTrailing 4 quarters | — | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $295.0K | — | ||
| Q3 25 | $895.0K | — | ||
| Q2 25 | $629.0K | — | ||
| Q1 25 | $271.0K | — | ||
| Q4 24 | $166.0K | — | ||
| Q3 24 | $698.0K | — | ||
| Q2 24 | $84.0K | $-3.7M | ||
| Q1 24 | $-43.0K | $-2.7M |
| Q4 25 | — | — | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | $-3.9M | ||
| Q1 24 | — | $-2.9M |
| Q4 25 | — | — | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | -252.6% | ||
| Q1 24 | — | -48.8% |
| Q4 25 | — | — | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | 15.7% | ||
| Q1 24 | — | 2.6% |
| Q4 25 | 0.27× | — | ||
| Q3 25 | 3.55× | — | ||
| Q2 25 | 0.87× | — | ||
| Q1 25 | 0.58× | — | ||
| Q4 24 | 0.03× | — | ||
| Q3 24 | 0.96× | — | ||
| Q2 24 | 0.31× | — | ||
| Q1 24 | -0.66× | -3.30× |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
ACFN
| PG | $2.2M | 94% |
| Other | $143.0K | 6% |
PULM
Segment breakdown not available.
