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Side-by-side financial comparison of CarParts.com, Inc. (PRTS) and REPLIGEN CORP (RGEN). Click either name above to swap in a different company.

REPLIGEN CORP is the larger business by last-quarter revenue ($197.9M vs $120.4M, roughly 1.6× CarParts.com, Inc.). REPLIGEN CORP runs the higher net margin — 6.7% vs -9.6%, a 16.3% gap on every dollar of revenue. On growth, REPLIGEN CORP posted the faster year-over-year revenue change (13.6% vs -9.8%). Over the past eight quarters, REPLIGEN CORP's revenue compounded faster (14.4% CAGR vs -8.6%).

Genuine Parts Company (GPC) is an American automotive and industrial parts distributor based in Atlanta, Georgia. Established by brothers Carlyle and Malcolm Fraser in 1928, the company has approximately 60,000 employees. In addition to the United States, GPC has operated in Australasia, Belgium, Canada, France, Germany, Mexico, the Netherlands, Poland, and the United Kingdom. GPC's subsidiaries include industrial parts distributor Motion as well as NAPA Auto Parts, which primarily sells part...

Repligen Corporation is a global life sciences company devoted to the development and commercialization of innovative bioprocessing technologies and systems that enable efficiencies in the process of manufacturing biological drugs.2025 The company is based in Waltham, Massachusetts,2014 and was incorporated in Delaware in 1981. A public company, Repligen is listed on the NASDAQ exchange under the symbol RGEN. As of 2025, Repligen employs over 1,900 employees globally and serves primarily biop...

PRTS vs RGEN — Head-to-Head

Bigger by revenue
RGEN
RGEN
1.6× larger
RGEN
$197.9M
$120.4M
PRTS
Growing faster (revenue YoY)
RGEN
RGEN
+23.5% gap
RGEN
13.6%
-9.8%
PRTS
Higher net margin
RGEN
RGEN
16.3% more per $
RGEN
6.7%
-9.6%
PRTS
Faster 2-yr revenue CAGR
RGEN
RGEN
Annualised
RGEN
14.4%
-8.6%
PRTS

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
PRTS
PRTS
RGEN
RGEN
Revenue
$120.4M
$197.9M
Net Profit
$-11.6M
$13.3M
Gross Margin
33.2%
52.5%
Operating Margin
9.0%
Net Margin
-9.6%
6.7%
Revenue YoY
-9.8%
13.6%
Net Profit YoY
25.0%
143.9%
EPS (diluted)
$-0.82
$0.24

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
PRTS
PRTS
RGEN
RGEN
Q4 25
$120.4M
$197.9M
Q3 25
$127.8M
$188.8M
Q2 25
$151.9M
$182.4M
Q1 25
$147.4M
$169.2M
Q4 24
$133.5M
$174.1M
Q3 24
$144.8M
$154.9M
Q2 24
$144.3M
$154.1M
Q1 24
$151.3M
Net Profit
PRTS
PRTS
RGEN
RGEN
Q4 25
$-11.6M
$13.3M
Q3 25
$-10.9M
$14.9M
Q2 25
$-12.7M
$14.9M
Q1 25
$-15.3M
$5.8M
Q4 24
$-15.4M
$-30.3M
Q3 24
$-10.0M
$-654.0K
Q2 24
$-8.7M
$3.3M
Q1 24
$2.1M
Gross Margin
PRTS
PRTS
RGEN
RGEN
Q4 25
33.2%
52.5%
Q3 25
33.1%
53.2%
Q2 25
32.8%
50.0%
Q1 25
32.1%
53.6%
Q4 24
32.5%
26.1%
Q3 24
35.2%
50.0%
Q2 24
33.5%
49.8%
Q1 24
49.5%
Operating Margin
PRTS
PRTS
RGEN
RGEN
Q4 25
9.0%
Q3 25
-7.9%
8.9%
Q2 25
-8.2%
7.6%
Q1 25
-10.3%
3.9%
Q4 24
-11.6%
-17.7%
Q3 24
-6.9%
-5.1%
Q2 24
-6.0%
1.0%
Q1 24
1.3%
Net Margin
PRTS
PRTS
RGEN
RGEN
Q4 25
-9.6%
6.7%
Q3 25
-8.5%
7.9%
Q2 25
-8.4%
8.2%
Q1 25
-10.4%
3.4%
Q4 24
-11.5%
-17.4%
Q3 24
-6.9%
-0.4%
Q2 24
-6.0%
2.2%
Q1 24
1.4%
EPS (diluted)
PRTS
PRTS
RGEN
RGEN
Q4 25
$-0.82
$0.24
Q3 25
$-0.19
$0.26
Q2 25
$-0.23
$0.26
Q1 25
$-0.27
$0.10
Q4 24
$-0.28
$-0.55
Q3 24
$-0.17
$-0.01
Q2 24
$-0.15
$0.06
Q1 24
$0.04

Balance Sheet & Financial Strength

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

Metric
PRTS
PRTS
RGEN
RGEN
Cash + ST InvestmentsLiquidity on hand
$25.8M
$767.6M
Total DebtLower is stronger
$542.2M
Stockholders' EquityBook value
$53.5M
$2.1B
Total Assets
$184.9M
$2.9B
Debt / EquityLower = less leverage
0.26×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
PRTS
PRTS
RGEN
RGEN
Q4 25
$25.8M
$767.6M
Q3 25
$748.7M
Q2 25
$708.9M
Q1 25
$697.2M
Q4 24
$757.4M
Q3 24
$784.0M
Q2 24
$809.1M
Q1 24
$780.6M
Total Debt
PRTS
PRTS
RGEN
RGEN
Q4 25
$542.2M
Q3 25
$537.9M
Q2 25
Q1 25
Q4 24
$525.6M
Q3 24
Q2 24
Q1 24
Stockholders' Equity
PRTS
PRTS
RGEN
RGEN
Q4 25
$53.5M
$2.1B
Q3 25
$64.2M
$2.1B
Q2 25
$62.4M
$2.1B
Q1 25
$72.8M
$2.0B
Q4 24
$85.2M
$2.0B
Q3 24
$97.2M
$2.0B
Q2 24
$103.9M
$2.0B
Q1 24
$2.0B
Total Assets
PRTS
PRTS
RGEN
RGEN
Q4 25
$184.9M
$2.9B
Q3 25
$200.3M
$2.9B
Q2 25
$189.6M
$2.9B
Q1 25
$216.5M
$2.9B
Q4 24
$210.6M
$2.8B
Q3 24
$227.6M
$2.8B
Q2 24
$238.0M
$2.9B
Q1 24
$2.8B
Debt / Equity
PRTS
PRTS
RGEN
RGEN
Q4 25
0.26×
Q3 25
0.26×
Q2 25
Q1 25
Q4 24
0.27×
Q3 24
Q2 24
Q1 24

Cash Flow & Capital Efficiency

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

Metric
PRTS
PRTS
RGEN
RGEN
Operating Cash FlowLast quarter
$25.7M
Free Cash FlowOCF − Capex
$17.6M
FCF MarginFCF / Revenue
8.9%
Capex IntensityCapex / Revenue
4.1%
Cash ConversionOCF / Net Profit
1.93×
TTM Free Cash FlowTrailing 4 quarters
$93.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
PRTS
PRTS
RGEN
RGEN
Q4 25
$25.7M
Q3 25
$-6.4M
$48.1M
Q2 25
$-25.6M
$28.6M
Q1 25
$5.5M
$15.0M
Q4 24
$1.8M
$39.2M
Q3 24
$8.5M
$49.3M
Q2 24
$-3.6M
$42.2M
Q1 24
$44.7M
Free Cash Flow
PRTS
PRTS
RGEN
RGEN
Q4 25
$17.6M
Q3 25
$-8.3M
$43.4M
Q2 25
$-27.9M
$21.5M
Q1 25
$3.4M
$11.4M
Q4 24
$-631.0K
$33.6M
Q3 24
$4.9M
$42.3M
Q2 24
$-10.8M
$37.4M
Q1 24
$36.4M
FCF Margin
PRTS
PRTS
RGEN
RGEN
Q4 25
8.9%
Q3 25
-6.5%
23.0%
Q2 25
-18.3%
11.8%
Q1 25
2.3%
6.8%
Q4 24
-0.5%
19.3%
Q3 24
3.4%
27.3%
Q2 24
-7.5%
24.3%
Q1 24
24.0%
Capex Intensity
PRTS
PRTS
RGEN
RGEN
Q4 25
4.1%
Q3 25
1.5%
2.5%
Q2 25
1.5%
3.9%
Q1 25
1.4%
2.1%
Q4 24
1.8%
3.2%
Q3 24
2.5%
4.5%
Q2 24
4.9%
3.1%
Q1 24
5.5%
Cash Conversion
PRTS
PRTS
RGEN
RGEN
Q4 25
1.93×
Q3 25
3.23×
Q2 25
1.92×
Q1 25
2.57×
Q4 24
Q3 24
Q2 24
12.70×
Q1 24
21.35×

Financial Flow Comparison

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

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