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Side-by-side financial comparison of POWER INTEGRATIONS INC (POWI) and Proto Labs Inc (PRLB). Click either name above to swap in a different company.

Proto Labs Inc is the larger business by last-quarter revenue ($136.5M vs $103.2M, roughly 1.3× POWER INTEGRATIONS INC). On growth, Proto Labs Inc posted the faster year-over-year revenue change (12.1% vs -1.9%). POWER INTEGRATIONS INC produced more free cash flow last quarter ($19.2M vs $8.4M). Over the past eight quarters, POWER INTEGRATIONS INC's revenue compounded faster (6.1% CAGR vs 3.3%).

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.

Protolabs is a company that provides rapid manufacturing of 3D printed, CNC-machined, sheet metal, and injection-molded custom parts for prototyping and production. Markets like medical devices, aerospace, electronics, appliances, automotive and consumer products use these parts. Protolabs' headquarters are located in Maple Plain, Minnesota, with Minnesota-based manufacturing facilities in Plymouth, Brooklyn Park, and Rosemount, along with additional facilities in Nashua, New Hampshire and Ca...

POWI vs PRLB — Head-to-Head

Bigger by revenue
PRLB
PRLB
1.3× larger
PRLB
$136.5M
$103.2M
POWI
Growing faster (revenue YoY)
PRLB
PRLB
+14.1% gap
PRLB
12.1%
-1.9%
POWI
More free cash flow
POWI
POWI
$10.8M more FCF
POWI
$19.2M
$8.4M
PRLB
Faster 2-yr revenue CAGR
POWI
POWI
Annualised
POWI
6.1%
3.3%
PRLB

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
POWI
POWI
PRLB
PRLB
Revenue
$103.2M
$136.5M
Net Profit
$13.3M
Gross Margin
52.9%
44.2%
Operating Margin
8.5%
5.0%
Net Margin
12.9%
Revenue YoY
-1.9%
12.1%
Net Profit YoY
45.4%
EPS (diluted)
$0.24
$0.25

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
PRLB
PRLB
Q4 25
$103.2M
$136.5M
Q3 25
$118.9M
$135.4M
Q2 25
$115.9M
$135.1M
Q1 25
$105.5M
$126.2M
Q4 24
$105.3M
$121.8M
Q3 24
$115.8M
$125.6M
Q2 24
$106.2M
$125.6M
Q1 24
$91.7M
$127.9M
Net Profit
POWI
POWI
PRLB
PRLB
Q4 25
$13.3M
Q3 25
$-1.4M
$7.2M
Q2 25
$1.4M
$4.4M
Q1 25
$8.8M
$3.6M
Q4 24
$9.1M
Q3 24
$14.3M
$7.2M
Q2 24
$4.8M
$4.5M
Q1 24
$4.0M
$5.3M
Gross Margin
POWI
POWI
PRLB
PRLB
Q4 25
52.9%
44.2%
Q3 25
54.5%
45.3%
Q2 25
55.2%
44.3%
Q1 25
55.2%
44.1%
Q4 24
54.4%
42.7%
Q3 24
54.5%
45.6%
Q2 24
53.2%
45.0%
Q1 24
52.1%
44.9%
Operating Margin
POWI
POWI
PRLB
PRLB
Q4 25
8.5%
5.0%
Q3 25
-3.3%
6.5%
Q2 25
-1.2%
3.7%
Q1 25
6.4%
3.6%
Q4 24
3.7%
-1.2%
Q3 24
10.0%
6.8%
Q2 24
1.8%
4.8%
Q1 24
0.5%
5.3%
Net Margin
POWI
POWI
PRLB
PRLB
Q4 25
12.9%
Q3 25
-1.1%
5.3%
Q2 25
1.2%
3.3%
Q1 25
8.3%
2.9%
Q4 24
8.7%
Q3 24
12.3%
5.7%
Q2 24
4.6%
3.6%
Q1 24
4.3%
4.1%
EPS (diluted)
POWI
POWI
PRLB
PRLB
Q4 25
$0.24
$0.25
Q3 25
$-0.02
$0.30
Q2 25
$0.02
$0.18
Q1 25
$0.15
$0.15
Q4 24
$0.15
$-0.01
Q3 24
$0.25
$0.29
Q2 24
$0.09
$0.18
Q1 24
$0.07
$0.20

Balance Sheet & Financial Strength

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

Metric
POWI
POWI
PRLB
PRLB
Cash + ST InvestmentsLiquidity on hand
$249.5M
$128.1M
Total DebtLower is stronger
Stockholders' EquityBook value
$672.8M
$673.9M
Total Assets
$772.2M
$763.4M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
POWI
POWI
PRLB
PRLB
Q4 25
$249.5M
$128.1M
Q3 25
$241.9M
$119.2M
Q2 25
$268.7M
$103.2M
Q1 25
$289.3M
$96.8M
Q4 24
$300.0M
$103.1M
Q3 24
$303.8M
$100.5M
Q2 24
$290.5M
$112.9M
Q1 24
$299.6M
$109.7M
Stockholders' Equity
POWI
POWI
PRLB
PRLB
Q4 25
$672.8M
$673.9M
Q3 25
$672.0M
$664.7M
Q2 25
$703.8M
$664.7M
Q1 25
$735.8M
$656.8M
Q4 24
$749.8M
$670.2M
Q3 24
$749.2M
$680.0M
Q2 24
$730.7M
$685.2M
Q1 24
$738.2M
$687.3M
Total Assets
POWI
POWI
PRLB
PRLB
Q4 25
$772.2M
$763.4M
Q3 25
$772.5M
$756.9M
Q2 25
$797.5M
$743.3M
Q1 25
$814.4M
$737.5M
Q4 24
$828.8M
$743.5M
Q3 24
$825.0M
$753.8M
Q2 24
$804.8M
$758.2M
Q1 24
$805.8M
$769.8M

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
PRLB
PRLB
Operating Cash FlowLast quarter
$26.2M
$16.5M
Free Cash FlowOCF − Capex
$19.2M
$8.4M
FCF MarginFCF / Revenue
18.6%
6.2%
Capex IntensityCapex / Revenue
6.8%
5.9%
Cash ConversionOCF / Net Profit
1.97×
TTM Free Cash FlowTrailing 4 quarters
$87.1M
$59.7M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
POWI
POWI
PRLB
PRLB
Q4 25
$26.2M
$16.5M
Q3 25
$29.9M
$29.1M
Q2 25
$29.1M
$10.6M
Q1 25
$26.4M
$18.4M
Q4 24
$14.7M
$17.3M
Q3 24
$32.9M
$24.8M
Q2 24
$17.6M
$14.4M
Q1 24
$15.9M
$21.3M
Free Cash Flow
POWI
POWI
PRLB
PRLB
Q4 25
$19.2M
$8.4M
Q3 25
$24.2M
$25.0M
Q2 25
$23.1M
$9.1M
Q1 25
$20.7M
$17.1M
Q4 24
$11.7M
$16.5M
Q3 24
$27.2M
$23.2M
Q2 24
$13.5M
$10.2M
Q1 24
$11.6M
$18.8M
FCF Margin
POWI
POWI
PRLB
PRLB
Q4 25
18.6%
6.2%
Q3 25
20.3%
18.5%
Q2 25
20.0%
6.7%
Q1 25
19.6%
13.6%
Q4 24
11.1%
13.5%
Q3 24
23.5%
18.5%
Q2 24
12.7%
8.2%
Q1 24
12.6%
14.7%
Capex Intensity
POWI
POWI
PRLB
PRLB
Q4 25
6.8%
5.9%
Q3 25
4.8%
3.0%
Q2 25
5.1%
1.1%
Q1 25
5.4%
1.0%
Q4 24
2.9%
0.7%
Q3 24
4.9%
1.2%
Q2 24
3.9%
3.3%
Q1 24
4.7%
2.0%
Cash Conversion
POWI
POWI
PRLB
PRLB
Q4 25
1.97×
Q3 25
4.03×
Q2 25
21.24×
2.39×
Q1 25
3.00×
5.11×
Q4 24
1.61×
Q3 24
2.30×
3.44×
Q2 24
3.64×
3.18×
Q1 24
4.02×
4.05×

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%

PRLB
PRLB

CNC Machining Firstcut$65.5M48%
Injection Molding Protomold$47.6M35%
Three D Printing Fineline$18.8M14%
Sheet Metal$4.4M3%

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