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

Ribbon Communications Inc. is the larger business by last-quarter revenue ($162.6M vs $120.4M, roughly 1.4× CarParts.com, Inc.). Ribbon Communications Inc. runs the higher net margin — 54.8% vs -9.6%, a 64.4% gap on every dollar of revenue. On growth, CarParts.com, Inc. posted the faster year-over-year revenue change (-9.8% vs -10.3%). Over the past eight quarters, Ribbon Communications Inc.'s revenue compounded faster (-8.1% 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...

Ribbon Communications Inc. is a public company that makes software, IP and optical networking solutions for service providers, enterprises and critical infrastructure sectors. The company was formed in 2017, following the merger of Genband and Sonus Networks and is headquartered in Plano, Texas.

PRTS vs RBBN — Head-to-Head

Bigger by revenue
RBBN
RBBN
1.4× larger
RBBN
$162.6M
$120.4M
PRTS
Growing faster (revenue YoY)
PRTS
PRTS
+0.5% gap
PRTS
-9.8%
-10.3%
RBBN
Higher net margin
RBBN
RBBN
64.4% more per $
RBBN
54.8%
-9.6%
PRTS
Faster 2-yr revenue CAGR
RBBN
RBBN
Annualised
RBBN
-8.1%
-8.6%
PRTS

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
PRTS
PRTS
RBBN
RBBN
Revenue
$120.4M
$162.6M
Net Profit
$-11.6M
$89.1M
Gross Margin
33.2%
42.9%
Operating Margin
37.6%
Net Margin
-9.6%
54.8%
Revenue YoY
-9.8%
-10.3%
Net Profit YoY
25.0%
EPS (diluted)
$-0.82
$0.50

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
PRTS
PRTS
RBBN
RBBN
Q1 26
$162.6M
Q4 25
$120.4M
$227.3M
Q3 25
$127.8M
$215.4M
Q2 25
$151.9M
$220.6M
Q1 25
$147.4M
$181.3M
Q4 24
$133.5M
$251.4M
Q3 24
$144.8M
$210.2M
Q2 24
$144.3M
$192.6M
Net Profit
PRTS
PRTS
RBBN
RBBN
Q1 26
$89.1M
Q4 25
$-11.6M
Q3 25
$-10.9M
$-12.1M
Q2 25
$-12.7M
$-11.1M
Q1 25
$-15.3M
$-26.2M
Q4 24
$-15.4M
Q3 24
$-10.0M
$-13.4M
Q2 24
$-8.7M
$-16.8M
Gross Margin
PRTS
PRTS
RBBN
RBBN
Q1 26
42.9%
Q4 25
33.2%
53.3%
Q3 25
33.1%
50.1%
Q2 25
32.8%
49.6%
Q1 25
32.1%
45.4%
Q4 24
32.5%
55.7%
Q3 24
35.2%
52.1%
Q2 24
33.5%
50.8%
Operating Margin
PRTS
PRTS
RBBN
RBBN
Q1 26
37.6%
Q4 25
4.1%
Q3 25
-7.9%
1.3%
Q2 25
-8.2%
1.9%
Q1 25
-10.3%
-10.8%
Q4 24
-11.6%
13.2%
Q3 24
-6.9%
-0.4%
Q2 24
-6.0%
-1.0%
Net Margin
PRTS
PRTS
RBBN
RBBN
Q1 26
54.8%
Q4 25
-9.6%
Q3 25
-8.5%
-5.6%
Q2 25
-8.4%
-5.0%
Q1 25
-10.4%
-14.5%
Q4 24
-11.5%
Q3 24
-6.9%
-6.4%
Q2 24
-6.0%
-8.7%
EPS (diluted)
PRTS
PRTS
RBBN
RBBN
Q1 26
$0.50
Q4 25
$-0.82
$0.50
Q3 25
$-0.19
$-0.07
Q2 25
$-0.23
$-0.06
Q1 25
$-0.27
$-0.15
Q4 24
$-0.28
$0.05
Q3 24
$-0.17
$-0.08
Q2 24
$-0.15
$-0.10

Balance Sheet & Financial Strength

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

Metric
PRTS
PRTS
RBBN
RBBN
Cash + ST InvestmentsLiquidity on hand
$25.8M
$67.6M
Total DebtLower is stronger
Stockholders' EquityBook value
$53.5M
$419.1M
Total Assets
$184.9M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
PRTS
PRTS
RBBN
RBBN
Q1 26
$67.6M
Q4 25
$25.8M
$96.4M
Q3 25
$74.8M
Q2 25
$60.5M
Q1 25
$71.2M
Q4 24
$87.8M
Q3 24
$37.2M
Q2 24
$64.6M
Total Debt
PRTS
PRTS
RBBN
RBBN
Q1 26
Q4 25
$342.1M
Q3 25
$344.3M
Q2 25
$346.5M
Q1 25
$347.4M
Q4 24
$348.3M
Q3 24
$349.1M
Q2 24
$350.0M
Stockholders' Equity
PRTS
PRTS
RBBN
RBBN
Q1 26
$419.1M
Q4 25
$53.5M
$449.0M
Q3 25
$64.2M
$360.1M
Q2 25
$62.4M
$370.4M
Q1 25
$72.8M
$381.8M
Q4 24
$85.2M
$404.6M
Q3 24
$97.2M
$395.5M
Q2 24
$103.9M
$405.0M
Total Assets
PRTS
PRTS
RBBN
RBBN
Q1 26
Q4 25
$184.9M
$1.2B
Q3 25
$200.3M
$1.1B
Q2 25
$189.6M
$1.1B
Q1 25
$216.5M
$1.1B
Q4 24
$210.6M
$1.2B
Q3 24
$227.6M
$1.1B
Q2 24
$238.0M
$1.1B
Debt / Equity
PRTS
PRTS
RBBN
RBBN
Q1 26
Q4 25
0.76×
Q3 25
0.96×
Q2 25
0.94×
Q1 25
0.91×
Q4 24
0.86×
Q3 24
0.88×
Q2 24
0.86×

Financial Flow Comparison

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

Revenue Breakdown by Segment

PRTS
PRTS

Segment breakdown not available.

RBBN
RBBN

Service$94.5M58%
Product$68.1M42%

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