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Side-by-side financial comparison of Lennox International (LII) and Monolithic Power Systems (MPWR). Click either name above to swap in a different company.

Lennox International is the larger business by last-quarter revenue ($1.2B vs $804.2M, roughly 1.5× Monolithic Power Systems). Monolithic Power Systems runs the higher net margin — 24.0% vs 13.6%, a 10.5% gap on every dollar of revenue. On growth, Monolithic Power Systems posted the faster year-over-year revenue change (26.1% vs -11.2%). Over the past eight quarters, Monolithic Power Systems's revenue compounded faster (25.9% CAGR vs 6.8%).

Lennox International Inc. is an American provider of climate control products for the heating, ventilation, and air conditioning (HVAC) and refrigeration markets. Based in Richardson, Texas, the company is 9.8% owned by John W. Norris, III, a descendant of DW Norris, who acquired the company in 1904. The company's largest production facilities are in Saltillo, Mexico, Marshalltown, Iowa, and Orangeburg, South Carolina.

Monolithic Power Systems, Inc. is an American, publicly traded company headquartered in Kirkland, Washington. It operates in more than 15 locations worldwide.

LII vs MPWR — Head-to-Head

Bigger by revenue
LII
LII
1.5× larger
LII
$1.2B
$804.2M
MPWR
Growing faster (revenue YoY)
MPWR
MPWR
+37.3% gap
MPWR
26.1%
-11.2%
LII
Higher net margin
MPWR
MPWR
10.5% more per $
MPWR
24.0%
13.6%
LII
Faster 2-yr revenue CAGR
MPWR
MPWR
Annualised
MPWR
25.9%
6.8%
LII

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
LII
LII
MPWR
MPWR
Revenue
$1.2B
$804.2M
Net Profit
$162.1M
$193.2M
Gross Margin
34.7%
55.3%
Operating Margin
18.6%
30.0%
Net Margin
13.6%
24.0%
Revenue YoY
-11.2%
26.1%
Net Profit YoY
-18.0%
43.1%
EPS (diluted)
$4.62
$3.92

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
LII
LII
MPWR
MPWR
Q1 26
$804.2M
Q4 25
$1.2B
$751.2M
Q3 25
$1.4B
$737.2M
Q2 25
$1.5B
$664.6M
Q1 25
$1.1B
$637.6M
Q4 24
$1.3B
$621.7M
Q3 24
$1.5B
$620.1M
Q2 24
$1.5B
$507.4M
Net Profit
LII
LII
MPWR
MPWR
Q1 26
$193.2M
Q4 25
$162.1M
$171.7M
Q3 25
$245.8M
$179.8M
Q2 25
$277.6M
$135.0M
Q1 25
$120.3M
$135.1M
Q4 24
$197.7M
$1.3B
Q3 24
$239.0M
$144.4M
Q2 24
$245.9M
$100.4M
Gross Margin
LII
LII
MPWR
MPWR
Q1 26
55.3%
Q4 25
34.7%
55.2%
Q3 25
32.8%
55.1%
Q2 25
34.8%
55.1%
Q1 25
30.6%
55.4%
Q4 24
33.9%
55.4%
Q3 24
32.6%
55.4%
Q2 24
33.6%
55.3%
Operating Margin
LII
LII
MPWR
MPWR
Q1 26
30.0%
Q4 25
18.6%
26.6%
Q3 25
21.7%
26.5%
Q2 25
23.6%
24.8%
Q1 25
14.5%
26.5%
Q4 24
18.2%
26.3%
Q3 24
20.2%
26.5%
Q2 24
22.1%
23.0%
Net Margin
LII
LII
MPWR
MPWR
Q1 26
24.0%
Q4 25
13.6%
22.9%
Q3 25
17.2%
24.4%
Q2 25
18.5%
20.3%
Q1 25
11.2%
21.2%
Q4 24
14.7%
201.8%
Q3 24
16.0%
23.3%
Q2 24
16.9%
19.8%
EPS (diluted)
LII
LII
MPWR
MPWR
Q1 26
$3.92
Q4 25
$4.62
$3.50
Q3 25
$6.98
$3.74
Q2 25
$7.82
$2.81
Q1 25
$3.37
$2.81
Q4 24
$5.52
$25.71
Q3 24
$6.68
$2.95
Q2 24
$6.87
$2.05

Balance Sheet & Financial Strength

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

Metric
LII
LII
MPWR
MPWR
Cash + ST InvestmentsLiquidity on hand
$34.7M
$1.4B
Total DebtLower is stronger
$1.1B
Stockholders' EquityBook value
$1.2B
$3.7B
Total Assets
$4.1B
$4.4B
Debt / EquityLower = less leverage
0.98×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
LII
LII
MPWR
MPWR
Q1 26
$1.4B
Q4 25
$34.7M
$1.3B
Q3 25
$59.2M
$1.3B
Q2 25
$55.1M
$1.1B
Q1 25
$222.9M
$1.0B
Q4 24
$422.3M
$862.9M
Q3 24
$255.7M
$1.5B
Q2 24
$57.8M
$1.3B
Total Debt
LII
LII
MPWR
MPWR
Q1 26
Q4 25
$1.1B
Q3 25
$838.2M
Q2 25
$835.7M
Q1 25
$834.2M
Q4 24
$833.1M
Q3 24
$827.6M
Q2 24
$1.1B
Stockholders' Equity
LII
LII
MPWR
MPWR
Q1 26
$3.7B
Q4 25
$1.2B
$3.5B
Q3 25
$1.1B
$3.4B
Q2 25
$900.5M
$3.2B
Q1 25
$852.5M
$3.1B
Q4 24
$850.2M
$3.0B
Q3 24
$754.0M
$2.4B
Q2 24
$577.4M
$2.2B
Total Assets
LII
LII
MPWR
MPWR
Q1 26
$4.4B
Q4 25
$4.1B
$4.2B
Q3 25
$3.5B
$4.1B
Q2 25
$3.7B
$3.9B
Q1 25
$3.5B
$3.7B
Q4 24
$3.5B
$3.5B
Q3 24
$3.3B
$2.9B
Q2 24
$3.2B
$2.6B
Debt / Equity
LII
LII
MPWR
MPWR
Q1 26
Q4 25
0.98×
Q3 25
0.78×
Q2 25
0.93×
Q1 25
0.98×
Q4 24
0.98×
Q3 24
1.10×
Q2 24
1.95×

Cash Flow & Capital Efficiency

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

Metric
LII
LII
MPWR
MPWR
Operating Cash FlowLast quarter
$405.9M
Free Cash FlowOCF − Capex
$376.7M
FCF MarginFCF / Revenue
31.5%
Capex IntensityCapex / Revenue
2.4%
Cash ConversionOCF / Net Profit
2.50×
TTM Free Cash FlowTrailing 4 quarters
$638.8M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
LII
LII
MPWR
MPWR
Q1 26
Q4 25
$405.9M
$104.9M
Q3 25
$300.7M
$239.3M
Q2 25
$86.8M
$237.6M
Q1 25
$-35.8M
$256.4M
Q4 24
$332.4M
$167.7M
Q3 24
$452.1M
$231.7M
Q2 24
$184.0M
$141.0M
Free Cash Flow
LII
LII
MPWR
MPWR
Q1 26
Q4 25
$376.7M
$63.9M
Q3 25
$265.1M
$196.8M
Q2 25
$58.3M
$189.5M
Q1 25
$-61.3M
$216.0M
Q4 24
$272.2M
$102.9M
Q3 24
$410.9M
$197.9M
Q2 24
$151.3M
$109.5M
FCF Margin
LII
LII
MPWR
MPWR
Q1 26
Q4 25
31.5%
8.5%
Q3 25
18.6%
26.7%
Q2 25
3.9%
28.5%
Q1 25
-5.7%
33.9%
Q4 24
20.2%
16.5%
Q3 24
27.4%
31.9%
Q2 24
10.4%
21.6%
Capex Intensity
LII
LII
MPWR
MPWR
Q1 26
Q4 25
2.4%
5.5%
Q3 25
2.5%
5.8%
Q2 25
1.9%
7.2%
Q1 25
2.4%
6.3%
Q4 24
4.5%
10.4%
Q3 24
2.8%
5.5%
Q2 24
2.3%
6.2%
Cash Conversion
LII
LII
MPWR
MPWR
Q1 26
Q4 25
2.50×
0.61×
Q3 25
1.22×
1.33×
Q2 25
0.31×
1.76×
Q1 25
-0.30×
1.90×
Q4 24
1.68×
0.13×
Q3 24
1.89×
1.60×
Q2 24
0.75×
1.40×

Financial Flow Comparison

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

Revenue Breakdown by Segment

LII
LII

Residential Heating And Cooling$699.8M59%
Commercial Heating And Cooling$495.2M41%

MPWR
MPWR

Segment breakdown not available.

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