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Side-by-side financial comparison of ADVANCE AUTO PARTS INC (AAP) and MPLX LP (MPLX). Click either name above to swap in a different company.

MPLX LP is the larger business by last-quarter revenue ($2.5B vs $2.0B, roughly 1.2× ADVANCE AUTO PARTS INC). MPLX LP runs the higher net margin — 49.1% vs 0.3%, a 48.8% gap on every dollar of revenue. On growth, ADVANCE AUTO PARTS INC posted the faster year-over-year revenue change (130.1% vs 1.4%). MPLX LP produced more free cash flow last quarter ($782.0M vs $-21.0M). Over the past eight quarters, MPLX LP's revenue compounded faster (6.2% CAGR vs -15.7%).

Advance Auto Parts, Inc. is an American automotive aftermarket parts provider. Headquartered in Raleigh, North Carolina, it serves professional installer and do it yourself (DIY) customers.

MarkWest Energy Partners, L.P., a subsidiary of MPLX LP, is a natural gas gathering, processing and transportation company master limited partnership of the United States. In 1988, the company was founded in Denver, Colorado and grew to be Colorado's 13th largest company. In 2015 it was acquired by MPLX, itself a subsidiary of Marathon Petroleum.

AAP vs MPLX — Head-to-Head

Bigger by revenue
MPLX
MPLX
1.2× larger
MPLX
$2.5B
$2.0B
AAP
Growing faster (revenue YoY)
AAP
AAP
+128.7% gap
AAP
130.1%
1.4%
MPLX
Higher net margin
MPLX
MPLX
48.8% more per $
MPLX
49.1%
0.3%
AAP
More free cash flow
MPLX
MPLX
$803.0M more FCF
MPLX
$782.0M
$-21.0M
AAP
Faster 2-yr revenue CAGR
MPLX
MPLX
Annualised
MPLX
6.2%
-15.7%
AAP

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
AAP
AAP
MPLX
MPLX
Revenue
$2.0B
$2.5B
Net Profit
$6.0M
$1.2B
Gross Margin
44.1%
Operating Margin
2.2%
60.5%
Net Margin
0.3%
49.1%
Revenue YoY
130.1%
1.4%
Net Profit YoY
101.4%
8.5%
EPS (diluted)
$0.10

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
AAP
AAP
MPLX
MPLX
Q1 26
$2.0B
Q4 25
$2.0B
$2.5B
Q3 25
$2.0B
$2.5B
Q2 25
$2.6B
$2.4B
Q1 25
$2.5B
Q4 24
$2.1B
$2.4B
Q3 24
$2.2B
$2.3B
Q2 24
$2.8B
$2.3B
Net Profit
AAP
AAP
MPLX
MPLX
Q1 26
$6.0M
Q4 25
$-1.0M
$1.2B
Q3 25
$15.0M
$1.6B
Q2 25
$24.0M
$1.1B
Q1 25
$1.1B
Q4 24
$-6.0M
$1.1B
Q3 24
$45.0M
$1.0B
Q2 24
$40.0M
$1.2B
Gross Margin
AAP
AAP
MPLX
MPLX
Q1 26
44.1%
Q4 25
43.3%
Q3 25
43.5%
Q2 25
42.9%
Q1 25
Q4 24
42.3%
Q3 24
43.6%
Q2 24
43.4%
Operating Margin
AAP
AAP
MPLX
MPLX
Q1 26
2.2%
Q4 25
1.1%
60.5%
Q3 25
1.1%
73.2%
Q2 25
-5.1%
54.9%
Q1 25
55.5%
Q4 24
55.6%
Q3 24
2.5%
54.4%
Q2 24
1.9%
62.9%
Net Margin
AAP
AAP
MPLX
MPLX
Q1 26
0.3%
Q4 25
-0.0%
49.1%
Q3 25
0.7%
63.2%
Q2 25
0.9%
44.9%
Q1 25
46.2%
Q4 24
-0.3%
45.9%
Q3 24
2.1%
44.6%
Q2 24
1.4%
52.6%
EPS (diluted)
AAP
AAP
MPLX
MPLX
Q1 26
$0.10
Q4 25
$-0.02
Q3 25
$0.25
Q2 25
$0.40
Q1 25
Q4 24
$-0.10
Q3 24
$0.75
Q2 24
$0.67

Balance Sheet & Financial Strength

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

Metric
AAP
AAP
MPLX
MPLX
Cash + ST InvestmentsLiquidity on hand
$3.1B
$2.1B
Total DebtLower is stronger
$3.4B
$24.2B
Stockholders' EquityBook value
$2.2B
Total Assets
$11.8B
$43.0B
Debt / EquityLower = less leverage
1.55×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AAP
AAP
MPLX
MPLX
Q1 26
$3.1B
Q4 25
$3.2B
$2.1B
Q3 25
$1.7B
$1.8B
Q2 25
$1.7B
$1.4B
Q1 25
$2.5B
Q4 24
$464.5M
$1.5B
Q3 24
$479.4M
$2.4B
Q2 24
$451.0M
$2.5B
Total Debt
AAP
AAP
MPLX
MPLX
Q1 26
$3.4B
Q4 25
$3.4B
$24.2B
Q3 25
$1.8B
$24.1B
Q2 25
$1.8B
$19.7B
Q1 25
$19.7B
Q4 24
$1.8B
$19.3B
Q3 24
$1.8B
$19.3B
Q2 24
$1.8B
$19.2B
Stockholders' Equity
AAP
AAP
MPLX
MPLX
Q1 26
$2.2B
Q4 25
$2.2B
Q3 25
$2.2B
Q2 25
$2.2B
Q1 25
Q4 24
$2.6B
Q3 24
$2.6B
Q2 24
$2.6B
Total Assets
AAP
AAP
MPLX
MPLX
Q1 26
$11.8B
Q4 25
$12.1B
$43.0B
Q3 25
$10.5B
$43.2B
Q2 25
$10.6B
$37.8B
Q1 25
$39.0B
Q4 24
$12.5B
$37.5B
Q3 24
$12.3B
$38.5B
Q2 24
$12.2B
$38.4B
Debt / Equity
AAP
AAP
MPLX
MPLX
Q1 26
1.55×
Q4 25
1.55×
Q3 25
0.81×
Q2 25
0.81×
Q1 25
Q4 24
0.69×
Q3 24
0.69×
Q2 24
0.70×

Cash Flow & Capital Efficiency

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

Metric
AAP
AAP
MPLX
MPLX
Operating Cash FlowLast quarter
$72.0M
$1.5B
Free Cash FlowOCF − Capex
$-21.0M
$782.0M
FCF MarginFCF / Revenue
-1.1%
31.9%
Capex IntensityCapex / Revenue
4.7%
29.1%
Cash ConversionOCF / Net Profit
12.00×
1.24×
TTM Free Cash FlowTrailing 4 quarters
$-298.0M
$4.1B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AAP
AAP
MPLX
MPLX
Q1 26
$72.0M
Q4 25
$-12.0M
$1.5B
Q3 25
$50.0M
$1.4B
Q2 25
$-156.0M
$1.7B
Q1 25
$1.2B
Q4 24
$70.0M
$1.7B
Q3 24
$85.0M
$1.4B
Q2 24
$3.0M
$1.6B
Free Cash Flow
AAP
AAP
MPLX
MPLX
Q1 26
$-21.0M
Q4 25
$-76.0M
$782.0M
Q3 25
$-3.0M
$905.0M
Q2 25
$-198.0M
$1.4B
Q1 25
$979.0M
Q4 24
$27.0M
$1.4B
Q3 24
$44.0M
$1.1B
Q2 24
$-43.0M
$1.4B
FCF Margin
AAP
AAP
MPLX
MPLX
Q1 26
-1.1%
Q4 25
-3.7%
31.9%
Q3 25
-0.1%
36.8%
Q2 25
-7.7%
60.9%
Q1 25
39.8%
Q4 24
1.3%
56.6%
Q3 24
2.0%
48.4%
Q2 24
-1.6%
60.0%
Capex Intensity
AAP
AAP
MPLX
MPLX
Q1 26
4.7%
Q4 25
3.1%
29.1%
Q3 25
2.6%
21.4%
Q2 25
1.6%
12.8%
Q1 25
10.9%
Q4 24
2.0%
12.7%
Q3 24
1.9%
11.9%
Q2 24
1.7%
9.4%
Cash Conversion
AAP
AAP
MPLX
MPLX
Q1 26
12.00×
Q4 25
1.24×
Q3 25
3.33×
0.92×
Q2 25
-6.50×
1.64×
Q1 25
1.10×
Q4 24
1.51×
Q3 24
1.89×
1.35×
Q2 24
0.07×
1.32×

Financial Flow Comparison

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

Revenue Breakdown by Segment

AAP
AAP

Segment breakdown not available.

MPLX
MPLX

Services$746.0M30%
Other$675.0M28%
Products$492.0M20%
Nonrelated Party$186.0M8%
Related Party$151.0M6%
Crude Oil And Products Logistics$104.0M4%
Service Other$56.0M2%
Natural Gas And NGL Services$41.0M2%

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