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Side-by-side financial comparison of POWER INTEGRATIONS INC (POWI) and POWER SOLUTIONS INTERNATIONAL, INC. (PSIX). Click either name above to swap in a different company.

POWER SOLUTIONS INTERNATIONAL, INC. is the larger business by last-quarter revenue ($191.2M vs $103.2M, roughly 1.9× POWER INTEGRATIONS INC). POWER INTEGRATIONS INC runs the higher net margin — 12.9% vs 8.4%, a 4.5% gap on every dollar of revenue. On growth, POWER SOLUTIONS INTERNATIONAL, INC. posted the faster year-over-year revenue change (32.5% vs -1.9%). POWER INTEGRATIONS INC produced more free cash flow last quarter ($19.2M vs $-7.6M). Over the past eight quarters, POWER SOLUTIONS INTERNATIONAL, INC.'s revenue compounded faster (41.7% CAGR vs 6.1%).

American Electric Power Company, Inc. is an American domestic electric utility company in the United States. It is one of the largest electric utility companies in the country, with more than five million customers in 11 states.

Adani Energy Solutions Ltd, formerly known as Adani Transmission Ltd, is an electric power transmission and distribution company headquartered in Ahmedabad. As of April 2025, the company operates a cumulative transmission network of 26,696 circuit kilometers and is one of the largest private sector power transmission companies operating in India.

POWI vs PSIX — Head-to-Head

Bigger by revenue
PSIX
PSIX
1.9× larger
PSIX
$191.2M
$103.2M
POWI
Growing faster (revenue YoY)
PSIX
PSIX
+34.5% gap
PSIX
32.5%
-1.9%
POWI
Higher net margin
POWI
POWI
4.5% more per $
POWI
12.9%
8.4%
PSIX
More free cash flow
POWI
POWI
$26.8M more FCF
POWI
$19.2M
$-7.6M
PSIX
Faster 2-yr revenue CAGR
PSIX
PSIX
Annualised
PSIX
41.7%
6.1%
POWI

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
POWI
POWI
PSIX
PSIX
Revenue
$103.2M
$191.2M
Net Profit
$13.3M
$16.1M
Gross Margin
52.9%
21.9%
Operating Margin
8.5%
12.7%
Net Margin
12.9%
8.4%
Revenue YoY
-1.9%
32.5%
Net Profit YoY
45.4%
-31.0%
EPS (diluted)
$0.24
$0.69

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
POWI
POWI
PSIX
PSIX
Q4 25
$103.2M
$191.2M
Q3 25
$118.9M
$203.8M
Q2 25
$115.9M
$191.9M
Q1 25
$105.5M
$135.4M
Q4 24
$105.3M
$144.3M
Q3 24
$115.8M
$125.8M
Q2 24
$106.2M
$110.6M
Q1 24
$91.7M
$95.2M
Net Profit
POWI
POWI
PSIX
PSIX
Q4 25
$13.3M
$16.1M
Q3 25
$-1.4M
$27.6M
Q2 25
$1.4M
$51.2M
Q1 25
$8.8M
$19.1M
Q4 24
$9.1M
$23.3M
Q3 24
$14.3M
$17.3M
Q2 24
$4.8M
$21.5M
Q1 24
$4.0M
$7.1M
Gross Margin
POWI
POWI
PSIX
PSIX
Q4 25
52.9%
21.9%
Q3 25
54.5%
23.9%
Q2 25
55.2%
28.2%
Q1 25
55.2%
29.7%
Q4 24
54.4%
29.9%
Q3 24
54.5%
28.9%
Q2 24
53.2%
31.8%
Q1 24
52.1%
27.0%
Operating Margin
POWI
POWI
PSIX
PSIX
Q4 25
8.5%
12.7%
Q3 25
-3.3%
13.9%
Q2 25
-1.2%
16.9%
Q1 25
6.4%
18.2%
Q4 24
3.7%
17.5%
Q3 24
10.0%
16.3%
Q2 24
1.8%
22.9%
Q1 24
0.5%
11.2%
Net Margin
POWI
POWI
PSIX
PSIX
Q4 25
12.9%
8.4%
Q3 25
-1.1%
13.5%
Q2 25
1.2%
26.7%
Q1 25
8.3%
14.1%
Q4 24
8.7%
16.1%
Q3 24
12.3%
13.8%
Q2 24
4.6%
19.5%
Q1 24
4.3%
7.5%
EPS (diluted)
POWI
POWI
PSIX
PSIX
Q4 25
$0.24
$0.69
Q3 25
$-0.02
$1.20
Q2 25
$0.02
$2.22
Q1 25
$0.15
$0.83
Q4 24
$0.15
$1.01
Q3 24
$0.25
$0.75
Q2 24
$0.09
$0.94
Q1 24
$0.07
$0.31

Balance Sheet & Financial Strength

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

Metric
POWI
POWI
PSIX
PSIX
Cash + ST InvestmentsLiquidity on hand
$249.5M
$41.3M
Total DebtLower is stronger
$96.6M
Stockholders' EquityBook value
$672.8M
$178.6M
Total Assets
$772.2M
$424.7M
Debt / EquityLower = less leverage
0.54×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
POWI
POWI
PSIX
PSIX
Q4 25
$249.5M
$41.3M
Q3 25
$241.9M
$49.0M
Q2 25
$268.7M
$49.5M
Q1 25
$289.3M
$50.0M
Q4 24
$300.0M
$55.3M
Q3 24
$303.8M
$40.5M
Q2 24
$290.5M
$28.8M
Q1 24
$299.6M
$33.1M
Total Debt
POWI
POWI
PSIX
PSIX
Q4 25
$96.6M
Q3 25
$96.7M
Q2 25
$1.8M
Q1 25
$1.0M
Q4 24
$184.0K
Q3 24
$238.0K
Q2 24
$292.0K
Q1 24
$345.0K
Stockholders' Equity
POWI
POWI
PSIX
PSIX
Q4 25
$672.8M
$178.6M
Q3 25
$672.0M
$162.5M
Q2 25
$703.8M
$135.7M
Q1 25
$735.8M
$84.3M
Q4 24
$749.8M
$65.3M
Q3 24
$749.2M
$42.1M
Q2 24
$730.7M
$24.8M
Q1 24
$738.2M
$3.2M
Total Assets
POWI
POWI
PSIX
PSIX
Q4 25
$772.2M
$424.7M
Q3 25
$772.5M
$458.9M
Q2 25
$797.5M
$437.7M
Q1 25
$814.4M
$372.7M
Q4 24
$828.8M
$328.2M
Q3 24
$825.0M
$339.1M
Q2 24
$804.8M
$307.6M
Q1 24
$805.8M
$286.8M
Debt / Equity
POWI
POWI
PSIX
PSIX
Q4 25
0.54×
Q3 25
0.60×
Q2 25
0.01×
Q1 25
0.01×
Q4 24
0.00×
Q3 24
0.01×
Q2 24
0.01×
Q1 24
0.11×

Cash Flow & Capital Efficiency

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

Metric
POWI
POWI
PSIX
PSIX
Operating Cash FlowLast quarter
$26.2M
$-4.6M
Free Cash FlowOCF − Capex
$19.2M
$-7.6M
FCF MarginFCF / Revenue
18.6%
-4.0%
Capex IntensityCapex / Revenue
6.8%
1.6%
Cash ConversionOCF / Net Profit
1.97×
-0.29×
TTM Free Cash FlowTrailing 4 quarters
$87.1M
$14.1M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
POWI
POWI
PSIX
PSIX
Q4 25
$26.2M
$-4.6M
Q3 25
$29.9M
$3.3M
Q2 25
$29.1M
$16.7M
Q1 25
$26.4M
$8.8M
Q4 24
$14.7M
$32.7M
Q3 24
$32.9M
$12.6M
Q2 24
$17.6M
$1.5M
Q1 24
$15.9M
$15.6M
Free Cash Flow
POWI
POWI
PSIX
PSIX
Q4 25
$19.2M
$-7.6M
Q3 25
$24.2M
$1.7M
Q2 25
$23.1M
$14.6M
Q1 25
$20.7M
$5.4M
Q4 24
$11.7M
$30.0M
Q3 24
$27.2M
$12.1M
Q2 24
$13.5M
$822.0K
Q1 24
$11.6M
$14.8M
FCF Margin
POWI
POWI
PSIX
PSIX
Q4 25
18.6%
-4.0%
Q3 25
20.3%
0.8%
Q2 25
20.0%
7.6%
Q1 25
19.6%
4.0%
Q4 24
11.1%
20.8%
Q3 24
23.5%
9.7%
Q2 24
12.7%
0.7%
Q1 24
12.6%
15.6%
Capex Intensity
POWI
POWI
PSIX
PSIX
Q4 25
6.8%
1.6%
Q3 25
4.8%
0.8%
Q2 25
5.1%
1.1%
Q1 25
5.4%
2.5%
Q4 24
2.9%
1.8%
Q3 24
4.9%
0.3%
Q2 24
3.9%
0.6%
Q1 24
4.7%
0.9%
Cash Conversion
POWI
POWI
PSIX
PSIX
Q4 25
1.97×
-0.29×
Q3 25
0.12×
Q2 25
21.24×
0.33×
Q1 25
3.00×
0.46×
Q4 24
1.61×
1.40×
Q3 24
2.30×
0.73×
Q2 24
3.64×
0.07×
Q1 24
4.02×
2.20×

Financial Flow Comparison

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

Revenue Breakdown by Segment

POWI
POWI

Distributors$65.8M64%
Other$10.3M10%
KR$9.3M9%
DE$7.1M7%
TW$5.5M5%
Emea Other Than Germany$5.3M5%

PSIX
PSIX

Energy End Market$153.4M80%
Industrial End Market$33.3M17%
Transportation End Market$4.6M2%

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