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Side-by-side financial comparison of Penumbra Inc (PEN) and QUINSTREET, INC (QNST). Click either name above to swap in a different company.

Penumbra Inc is the larger business by last-quarter revenue ($385.4M vs $287.8M, roughly 1.3× QUINSTREET, INC). QUINSTREET, INC runs the higher net margin — 17.4% vs 12.3%, a 5.2% gap on every dollar of revenue. On growth, Penumbra Inc posted the faster year-over-year revenue change (22.1% vs 1.9%). Penumbra Inc produced more free cash flow last quarter ($68.0M vs $20.7M). Over the past eight quarters, QUINSTREET, INC's revenue compounded faster (53.2% CAGR vs 17.6%).

Penumbra, Inc. is an American medical device company headquartered in Alameda, California. The company was founded by Arani Bose and Adam Elsesser in 2004. It manufactures devices for interventional therapies to treat vascular conditions such as stroke and aneurysm.

QuinStreet, Inc. is a publicly traded online marketing company based in Foster City, California. The company helps generate web traffic for clients by acquiring popular domain names.

PEN vs QNST — Head-to-Head

Bigger by revenue
PEN
PEN
1.3× larger
PEN
$385.4M
$287.8M
QNST
Growing faster (revenue YoY)
PEN
PEN
+20.3% gap
PEN
22.1%
1.9%
QNST
Higher net margin
QNST
QNST
5.2% more per $
QNST
17.4%
12.3%
PEN
More free cash flow
PEN
PEN
$47.3M more FCF
PEN
$68.0M
$20.7M
QNST
Faster 2-yr revenue CAGR
QNST
QNST
Annualised
QNST
53.2%
17.6%
PEN

Income Statement — Q4 FY2025 vs Q2 FY2026

Metric
PEN
PEN
QNST
QNST
Revenue
$385.4M
$287.8M
Net Profit
$47.3M
$50.2M
Gross Margin
68.0%
9.6%
Operating Margin
15.4%
0.4%
Net Margin
12.3%
17.4%
Revenue YoY
22.1%
1.9%
Net Profit YoY
40.6%
3342.5%
EPS (diluted)
$1.20
$0.87

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
PEN
PEN
QNST
QNST
Q4 25
$385.4M
$287.8M
Q3 25
$354.7M
$285.9M
Q2 25
$339.5M
Q1 25
$324.1M
$269.8M
Q4 24
$315.5M
$282.6M
Q3 24
$301.0M
$279.2M
Q2 24
$299.4M
$198.3M
Q1 24
$278.7M
$168.6M
Net Profit
PEN
PEN
QNST
QNST
Q4 25
$47.3M
$50.2M
Q3 25
$45.9M
$4.5M
Q2 25
$45.3M
Q1 25
$39.2M
$4.4M
Q4 24
$33.7M
$-1.5M
Q3 24
$29.5M
$-1.4M
Q2 24
$-60.2M
$-2.2M
Q1 24
$11.0M
$-7.0M
Gross Margin
PEN
PEN
QNST
QNST
Q4 25
68.0%
9.6%
Q3 25
67.8%
9.4%
Q2 25
66.0%
Q1 25
66.6%
10.3%
Q4 24
66.8%
9.5%
Q3 24
66.5%
10.2%
Q2 24
54.4%
8.8%
Q1 24
65.0%
8.5%
Operating Margin
PEN
PEN
QNST
QNST
Q4 25
15.4%
0.4%
Q3 25
13.8%
1.7%
Q2 25
12.0%
Q1 25
12.4%
1.8%
Q4 24
13.6%
-0.5%
Q3 24
11.7%
-0.4%
Q2 24
-27.0%
-0.7%
Q1 24
4.3%
-3.2%
Net Margin
PEN
PEN
QNST
QNST
Q4 25
12.3%
17.4%
Q3 25
12.9%
1.6%
Q2 25
13.3%
Q1 25
12.1%
1.6%
Q4 24
10.7%
-0.5%
Q3 24
9.8%
-0.5%
Q2 24
-20.1%
-1.1%
Q1 24
3.9%
-4.2%
EPS (diluted)
PEN
PEN
QNST
QNST
Q4 25
$1.20
$0.87
Q3 25
$1.17
$0.08
Q2 25
$1.15
Q1 25
$1.00
$0.08
Q4 24
$0.88
$-0.03
Q3 24
$0.75
$-0.02
Q2 24
$-1.55
$-0.04
Q1 24
$0.28
$-0.13

Balance Sheet & Financial Strength

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

Metric
PEN
PEN
QNST
QNST
Cash + ST InvestmentsLiquidity on hand
$186.9M
$107.0M
Total DebtLower is stronger
Stockholders' EquityBook value
$1.4B
$294.4M
Total Assets
$1.8B
$493.0M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
PEN
PEN
QNST
QNST
Q4 25
$186.9M
$107.0M
Q3 25
$321.0M
$101.3M
Q2 25
$421.8M
Q1 25
$376.1M
$81.8M
Q4 24
$324.4M
$57.8M
Q3 24
$280.5M
$25.0M
Q2 24
$288.3M
$50.5M
Q1 24
$223.1M
$39.6M
Stockholders' Equity
PEN
PEN
QNST
QNST
Q4 25
$1.4B
$294.4M
Q3 25
$1.4B
$246.7M
Q2 25
$1.3B
Q1 25
$1.2B
$235.5M
Q4 24
$1.2B
$224.3M
Q3 24
$1.1B
$219.8M
Q2 24
$1.2B
$216.8M
Q1 24
$1.2B
$215.0M
Total Assets
PEN
PEN
QNST
QNST
Q4 25
$1.8B
$493.0M
Q3 25
$1.7B
$442.6M
Q2 25
$1.7B
Q1 25
$1.6B
$417.2M
Q4 24
$1.5B
$409.6M
Q3 24
$1.5B
$401.2M
Q2 24
$1.5B
$368.5M
Q1 24
$1.6B
$349.3M

Cash Flow & Capital Efficiency

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

Metric
PEN
PEN
QNST
QNST
Operating Cash FlowLast quarter
$86.5M
$21.6M
Free Cash FlowOCF − Capex
$68.0M
$20.7M
FCF MarginFCF / Revenue
17.7%
7.2%
Capex IntensityCapex / Revenue
4.8%
0.3%
Cash ConversionOCF / Net Profit
1.83×
0.43×
TTM Free Cash FlowTrailing 4 quarters
$174.9M
$106.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
PEN
PEN
QNST
QNST
Q4 25
$86.5M
$21.6M
Q3 25
$58.3M
$19.6M
Q2 25
$44.9M
Q1 25
$49.0M
$30.1M
Q4 24
$51.1M
$38.7M
Q3 24
$56.5M
$-13.7M
Q2 24
$22.6M
$16.6M
Q1 24
$38.3M
$4.1M
Free Cash Flow
PEN
PEN
QNST
QNST
Q4 25
$68.0M
$20.7M
Q3 25
$42.0M
$18.4M
Q2 25
$29.4M
Q1 25
$35.5M
$29.5M
Q4 24
$45.7M
$38.2M
Q3 24
$51.0M
$-14.1M
Q2 24
$18.1M
$15.4M
Q1 24
$32.5M
$2.9M
FCF Margin
PEN
PEN
QNST
QNST
Q4 25
17.7%
7.2%
Q3 25
11.8%
6.4%
Q2 25
8.7%
Q1 25
11.0%
10.9%
Q4 24
14.5%
13.5%
Q3 24
16.9%
-5.1%
Q2 24
6.0%
7.8%
Q1 24
11.7%
1.7%
Capex Intensity
PEN
PEN
QNST
QNST
Q4 25
4.8%
0.3%
Q3 25
4.6%
0.4%
Q2 25
4.6%
Q1 25
4.2%
0.2%
Q4 24
1.7%
0.2%
Q3 24
1.8%
0.2%
Q2 24
1.5%
0.6%
Q1 24
2.1%
0.7%
Cash Conversion
PEN
PEN
QNST
QNST
Q4 25
1.83×
0.43×
Q3 25
1.27×
4.32×
Q2 25
0.99×
Q1 25
1.25×
6.82×
Q4 24
1.52×
Q3 24
1.91×
Q2 24
Q1 24
3.48×

Financial Flow Comparison

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

Revenue Breakdown by Segment

PEN
PEN

Thrombectomy$254.7M66%
Other$130.7M34%

QNST
QNST

Financial Service$216.8M75%
Home Services And Other Revenue$71.0M25%

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