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Side-by-side financial comparison of Quest Diagnostics (DGX) and GLOBAL PARTNERS LP (GLP). Click either name above to swap in a different company.

Quest Diagnostics is the larger business by last-quarter revenue ($2.9B vs $2.2B, roughly 1.3× GLOBAL PARTNERS LP). Quest Diagnostics runs the higher net margin — 9.7% vs 1.1%, a 8.6% gap on every dollar of revenue. On growth, Quest Diagnostics posted the faster year-over-year revenue change (9.2% vs 7.0%). Over the past eight quarters, Quest Diagnostics's revenue compounded faster (9.9% CAGR vs 0.2%).

Quest Diagnostics Incorporated is an American clinical laboratory. A Fortune 500 company, Quest operates in the United States, Puerto Rico, Mexico, and Brazil. Quest also maintains collaborative agreements with various hospitals and clinics across the globe.

Global Partners LP is an American energy supply company ranked 361 in the 2018 Fortune 500. The company is organized as a master limited partnership, and its operations focus on the importing of petroleum products and marketing them in North America. It wholesales products like crude oil, diesel oil, gasoline, heating oil and kerosene.

DGX vs GLP — Head-to-Head

Bigger by revenue
DGX
DGX
1.3× larger
DGX
$2.9B
$2.2B
GLP
Growing faster (revenue YoY)
DGX
DGX
+2.2% gap
DGX
9.2%
7.0%
GLP
Higher net margin
DGX
DGX
8.6% more per $
DGX
9.7%
1.1%
GLP
Faster 2-yr revenue CAGR
DGX
DGX
Annualised
DGX
9.9%
0.2%
GLP

Income Statement — Q1 FY2026 vs Q4 FY2025

Metric
DGX
DGX
GLP
GLP
Revenue
$2.9B
$2.2B
Net Profit
$281.0M
$25.1M
Gross Margin
11.9%
Operating Margin
15.4%
2.6%
Net Margin
9.7%
1.1%
Revenue YoY
9.2%
7.0%
Net Profit YoY
12.0%
5.0%
EPS (diluted)
$2.24

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
DGX
DGX
GLP
GLP
Q1 26
$2.9B
Q4 25
$2.8B
$2.2B
Q3 25
$2.8B
$2.2B
Q2 25
$2.8B
$2.1B
Q1 25
$2.7B
$2.2B
Q4 24
$2.6B
$2.1B
Q3 24
$2.5B
$2.1B
Q2 24
$2.4B
$2.3B
Net Profit
DGX
DGX
GLP
GLP
Q1 26
$281.0M
Q4 25
$245.0M
$25.1M
Q3 25
$245.0M
$29.0M
Q2 25
$282.0M
$25.2M
Q1 25
$220.0M
$18.7M
Q4 24
$222.0M
$23.9M
Q3 24
$226.0M
$45.9M
Q2 24
$229.0M
$46.1M
Gross Margin
DGX
DGX
GLP
GLP
Q1 26
Q4 25
32.4%
11.9%
Q3 25
33.7%
12.1%
Q2 25
34.2%
13.1%
Q1 25
32.5%
11.7%
Q4 24
32.7%
13.0%
Q3 24
32.6%
13.4%
Q2 24
33.5%
12.6%
Operating Margin
DGX
DGX
GLP
GLP
Q1 26
15.4%
Q4 25
13.8%
2.6%
Q3 25
13.7%
2.7%
Q2 25
15.9%
2.9%
Q1 25
13.0%
2.6%
Q4 24
13.8%
2.8%
Q3 24
13.3%
3.9%
Q2 24
14.8%
3.7%
Net Margin
DGX
DGX
GLP
GLP
Q1 26
9.7%
Q4 25
8.7%
1.1%
Q3 25
8.7%
1.3%
Q2 25
10.2%
1.2%
Q1 25
8.3%
0.9%
Q4 24
8.5%
1.2%
Q3 24
9.1%
2.1%
Q2 24
9.6%
2.0%
EPS (diluted)
DGX
DGX
GLP
GLP
Q1 26
$2.24
Q4 25
$2.18
Q3 25
$2.16
Q2 25
$2.47
Q1 25
$1.94
Q4 24
$1.95
Q3 24
$1.99
Q2 24
$2.03

Balance Sheet & Financial Strength

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

Metric
DGX
DGX
GLP
GLP
Cash + ST InvestmentsLiquidity on hand
$393.0M
Total DebtLower is stronger
$5.7B
Stockholders' EquityBook value
$7.7B
Total Assets
$16.7B
$3.9B
Debt / EquityLower = less leverage
0.74×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
DGX
DGX
GLP
GLP
Q1 26
$393.0M
Q4 25
$420.0M
Q3 25
$432.0M
Q2 25
$319.0M
Q1 25
$188.0M
Q4 24
$549.0M
Q3 24
$764.0M
Q2 24
$271.0M
Total Debt
DGX
DGX
GLP
GLP
Q1 26
$5.7B
Q4 25
$5.2B
Q3 25
$5.2B
Q2 25
$5.2B
Q1 25
$5.9B
Q4 24
$5.6B
Q3 24
$5.6B
Q2 24
$3.8B
Stockholders' Equity
DGX
DGX
GLP
GLP
Q1 26
$7.7B
Q4 25
$7.2B
Q3 25
$7.3B
Q2 25
$7.2B
Q1 25
$6.9B
Q4 24
$6.8B
Q3 24
$6.8B
Q2 24
$6.6B
Total Assets
DGX
DGX
GLP
GLP
Q1 26
$16.7B
Q4 25
$16.2B
$3.9B
Q3 25
$16.2B
$3.7B
Q2 25
$16.0B
$3.8B
Q1 25
$15.8B
$3.8B
Q4 24
$16.2B
$3.8B
Q3 24
$16.1B
$3.7B
Q2 24
$13.9B
$3.8B
Debt / Equity
DGX
DGX
GLP
GLP
Q1 26
0.74×
Q4 25
0.72×
Q3 25
0.71×
Q2 25
0.72×
Q1 25
0.85×
Q4 24
0.83×
Q3 24
0.83×
Q2 24
0.58×

Cash Flow & Capital Efficiency

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

Metric
DGX
DGX
GLP
GLP
Operating Cash FlowLast quarter
$278.0M
$101.0M
Free Cash FlowOCF − Capex
$62.2M
FCF MarginFCF / Revenue
2.8%
Capex IntensityCapex / Revenue
3.9%
1.8%
Cash ConversionOCF / Net Profit
0.99×
4.03×
TTM Free Cash FlowTrailing 4 quarters
$193.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
DGX
DGX
GLP
GLP
Q1 26
$278.0M
Q4 25
$465.0M
$101.0M
Q3 25
$563.0M
$19.0M
Q2 25
$544.0M
$216.3M
Q1 25
$314.0M
$-51.6M
Q4 24
$464.0M
$67.2M
Q3 24
$356.0M
$122.7M
Q2 24
$360.0M
$24.3M
Free Cash Flow
DGX
DGX
GLP
GLP
Q1 26
Q4 25
$307.0M
$62.2M
Q3 25
$419.0M
$-678.0K
Q2 25
$436.0M
$201.3M
Q1 25
$197.0M
$-69.5M
Q4 24
$341.0M
$20.4M
Q3 24
$250.0M
$98.4M
Q2 24
$268.0M
$8.7M
FCF Margin
DGX
DGX
GLP
GLP
Q1 26
Q4 25
10.9%
2.8%
Q3 25
14.9%
-0.0%
Q2 25
15.8%
9.7%
Q1 25
7.4%
-3.2%
Q4 24
13.0%
1.0%
Q3 24
10.0%
4.6%
Q2 24
11.2%
0.4%
Capex Intensity
DGX
DGX
GLP
GLP
Q1 26
3.9%
Q4 25
5.6%
1.8%
Q3 25
5.1%
0.9%
Q2 25
3.9%
0.7%
Q1 25
4.4%
0.8%
Q4 24
4.7%
2.3%
Q3 24
4.3%
1.1%
Q2 24
3.8%
0.7%
Cash Conversion
DGX
DGX
GLP
GLP
Q1 26
0.99×
Q4 25
1.90×
4.03×
Q3 25
2.30×
0.66×
Q2 25
1.93×
8.58×
Q1 25
1.43×
-2.76×
Q4 24
2.09×
2.82×
Q3 24
1.58×
2.67×
Q2 24
1.57×
0.53×

Financial Flow Comparison

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

Revenue Breakdown by Segment

DGX
DGX

Segment breakdown not available.

GLP
GLP

Gasoline$1.0B46%
Refined Petroleum Products Renewable Fuels Crude Oil And Propane$884.7M40%
Commercial Segment$187.6M8%
Station Operations$110.5M5%

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