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

KIRBY CORP is the larger business by last-quarter revenue ($851.8M vs $751.2M, roughly 1.1× Monolithic Power Systems). Monolithic Power Systems runs the higher net margin — 22.9% vs 10.8%, a 12.1% gap on every dollar of revenue. On growth, Monolithic Power Systems posted the faster year-over-year revenue change (20.8% vs 6.2%). KIRBY CORP produced more free cash flow last quarter ($265.2M vs $63.9M). Over the past eight quarters, Monolithic Power Systems's revenue compounded faster (28.1% CAGR vs 2.7%).

Kirby Corporation, headquartered in Houston, Texas, is the largest tank barge operator in the United States, transporting bulk liquid products throughout the Mississippi River System, on the Gulf Intracoastal Waterway, along all three U.S. Coasts, and in Alaska and Hawaii. Products transported by Kirby include petrochemicals, black oil, refined petroleum products, and agricultural chemical products by tank barge. Kirby also owns and operates eight ocean-going barge and tug units transporting ...

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

KEX vs MPWR — Head-to-Head

Bigger by revenue
KEX
KEX
1.1× larger
KEX
$851.8M
$751.2M
MPWR
Growing faster (revenue YoY)
MPWR
MPWR
+14.7% gap
MPWR
20.8%
6.2%
KEX
Higher net margin
MPWR
MPWR
12.1% more per $
MPWR
22.9%
10.8%
KEX
More free cash flow
KEX
KEX
$201.3M more FCF
KEX
$265.2M
$63.9M
MPWR
Faster 2-yr revenue CAGR
MPWR
MPWR
Annualised
MPWR
28.1%
2.7%
KEX

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
KEX
KEX
MPWR
MPWR
Revenue
$851.8M
$751.2M
Net Profit
$91.8M
$171.7M
Gross Margin
55.2%
Operating Margin
15.2%
26.6%
Net Margin
10.8%
22.9%
Revenue YoY
6.2%
20.8%
Net Profit YoY
114.4%
-86.3%
EPS (diluted)
$1.68
$3.50

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
KEX
KEX
MPWR
MPWR
Q4 25
$851.8M
$751.2M
Q3 25
$871.2M
$737.2M
Q2 25
$855.5M
$664.6M
Q1 25
$785.7M
$637.6M
Q4 24
$802.3M
$621.7M
Q3 24
$831.1M
$620.1M
Q2 24
$824.4M
$507.4M
Q1 24
$808.0M
$457.9M
Net Profit
KEX
KEX
MPWR
MPWR
Q4 25
$91.8M
$171.7M
Q3 25
$92.5M
$179.8M
Q2 25
$94.3M
$135.0M
Q1 25
$76.0M
$135.1M
Q4 24
$42.8M
$1.3B
Q3 24
$90.0M
$144.4M
Q2 24
$83.9M
$100.4M
Q1 24
$70.1M
$92.5M
Gross Margin
KEX
KEX
MPWR
MPWR
Q4 25
55.2%
Q3 25
55.1%
Q2 25
55.1%
Q1 25
55.4%
Q4 24
55.4%
Q3 24
55.4%
Q2 24
55.3%
Q1 24
55.1%
Operating Margin
KEX
KEX
MPWR
MPWR
Q4 25
15.2%
26.6%
Q3 25
14.8%
26.5%
Q2 25
15.4%
24.8%
Q1 25
13.4%
26.5%
Q4 24
6.3%
26.3%
Q3 24
15.3%
26.5%
Q2 24
14.6%
23.0%
Q1 24
12.6%
20.9%
Net Margin
KEX
KEX
MPWR
MPWR
Q4 25
10.8%
22.9%
Q3 25
10.6%
24.4%
Q2 25
11.0%
20.3%
Q1 25
9.7%
21.2%
Q4 24
5.3%
201.8%
Q3 24
10.8%
23.3%
Q2 24
10.2%
19.8%
Q1 24
8.7%
20.2%
EPS (diluted)
KEX
KEX
MPWR
MPWR
Q4 25
$1.68
$3.50
Q3 25
$1.65
$3.74
Q2 25
$1.67
$2.81
Q1 25
$1.33
$2.81
Q4 24
$0.74
$25.71
Q3 24
$1.55
$2.95
Q2 24
$1.43
$2.05
Q1 24
$1.19
$1.89

Balance Sheet & Financial Strength

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

Metric
KEX
KEX
MPWR
MPWR
Cash + ST InvestmentsLiquidity on hand
$78.8M
$1.3B
Total DebtLower is stronger
$919.3M
Stockholders' EquityBook value
$3.4B
$3.5B
Total Assets
$6.0B
$4.2B
Debt / EquityLower = less leverage
0.27×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
KEX
KEX
MPWR
MPWR
Q4 25
$78.8M
$1.3B
Q3 25
$47.0M
$1.3B
Q2 25
$68.4M
$1.1B
Q1 25
$51.1M
$1.0B
Q4 24
$74.4M
$862.9M
Q3 24
$67.1M
$1.5B
Q2 24
$53.5M
$1.3B
Q1 24
$75.2M
$1.3B
Total Debt
KEX
KEX
MPWR
MPWR
Q4 25
$919.3M
Q3 25
$1.0B
Q2 25
$1.1B
Q1 25
$1.1B
Q4 24
$874.9M
Q3 24
$978.6M
Q2 24
$1.0B
Q1 24
$1.1B
Stockholders' Equity
KEX
KEX
MPWR
MPWR
Q4 25
$3.4B
$3.5B
Q3 25
$3.4B
$3.4B
Q2 25
$3.4B
$3.2B
Q1 25
$3.3B
$3.1B
Q4 24
$3.4B
$3.0B
Q3 24
$3.3B
$2.4B
Q2 24
$3.3B
$2.2B
Q1 24
$3.2B
$2.1B
Total Assets
KEX
KEX
MPWR
MPWR
Q4 25
$6.0B
$4.2B
Q3 25
$6.1B
$4.1B
Q2 25
$6.1B
$3.9B
Q1 25
$6.0B
$3.7B
Q4 24
$5.9B
$3.5B
Q3 24
$5.9B
$2.9B
Q2 24
$5.9B
$2.6B
Q1 24
$5.8B
$2.6B
Debt / Equity
KEX
KEX
MPWR
MPWR
Q4 25
0.27×
Q3 25
0.31×
Q2 25
0.33×
Q1 25
0.33×
Q4 24
0.26×
Q3 24
0.30×
Q2 24
0.32×
Q1 24
0.33×

Cash Flow & Capital Efficiency

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

Metric
KEX
KEX
MPWR
MPWR
Operating Cash FlowLast quarter
$312.2M
$104.9M
Free Cash FlowOCF − Capex
$265.2M
$63.9M
FCF MarginFCF / Revenue
31.1%
8.5%
Capex IntensityCapex / Revenue
5.5%
5.5%
Cash ConversionOCF / Net Profit
3.40×
0.61×
TTM Free Cash FlowTrailing 4 quarters
$405.7M
$666.2M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
KEX
KEX
MPWR
MPWR
Q4 25
$312.2M
$104.9M
Q3 25
$227.5M
$239.3M
Q2 25
$93.9M
$237.6M
Q1 25
$36.5M
$256.4M
Q4 24
$247.4M
$167.7M
Q3 24
$206.5M
$231.7M
Q2 24
$179.3M
$141.0M
Q1 24
$123.3M
$248.1M
Free Cash Flow
KEX
KEX
MPWR
MPWR
Q4 25
$265.2M
$63.9M
Q3 25
$160.3M
$196.8M
Q2 25
$22.4M
$189.5M
Q1 25
$-42.1M
$216.0M
Q4 24
$150.7M
$102.9M
Q3 24
$130.1M
$197.9M
Q2 24
$90.8M
$109.5M
Q1 24
$42.2M
$232.1M
FCF Margin
KEX
KEX
MPWR
MPWR
Q4 25
31.1%
8.5%
Q3 25
18.4%
26.7%
Q2 25
2.6%
28.5%
Q1 25
-5.4%
33.9%
Q4 24
18.8%
16.5%
Q3 24
15.7%
31.9%
Q2 24
11.0%
21.6%
Q1 24
5.2%
50.7%
Capex Intensity
KEX
KEX
MPWR
MPWR
Q4 25
5.5%
5.5%
Q3 25
7.7%
5.8%
Q2 25
8.4%
7.2%
Q1 25
10.0%
6.3%
Q4 24
12.0%
10.4%
Q3 24
9.2%
5.5%
Q2 24
10.7%
6.2%
Q1 24
10.0%
3.5%
Cash Conversion
KEX
KEX
MPWR
MPWR
Q4 25
3.40×
0.61×
Q3 25
2.46×
1.33×
Q2 25
1.00×
1.76×
Q1 25
0.48×
1.90×
Q4 24
5.78×
0.13×
Q3 24
2.30×
1.60×
Q2 24
2.14×
1.40×
Q1 24
1.76×
2.68×

Financial Flow Comparison

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

Revenue Breakdown by Segment

KEX
KEX

Inland Transportation$379.2M45%
Power Generation$191.1M22%
Commercial And Industrial$149.4M18%
Coastal Transportation$102.5M12%
Oil And Gas$29.6M3%

MPWR
MPWR

Segment breakdown not available.

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