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Side-by-side financial comparison of Penumbra Inc (PEN) and SL GREEN REALTY CORP (SLG). Click either name above to swap in a different company.

Penumbra Inc is the larger business by last-quarter revenue ($385.4M vs $276.5M, roughly 1.4× SL GREEN REALTY CORP). Penumbra Inc runs the higher net margin — 12.3% vs -36.5%, a 48.8% gap on every dollar of revenue. On growth, Penumbra Inc posted the faster year-over-year revenue change (22.1% vs 12.4%). Over the past eight quarters, SL GREEN REALTY CORP's revenue compounded faster (21.3% 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.

SL Green Realty Corp. is a real estate investment trust that primarily invests in office buildings and shopping centers in New York City. As of December 31, 2024, the company owned interests in 39 properties comprising 25,297,353 square feet, primarily in Manhattan. It has been referred to as "New York City’s largest office landlord".

PEN vs SLG — Head-to-Head

Bigger by revenue
PEN
PEN
1.4× larger
PEN
$385.4M
$276.5M
SLG
Growing faster (revenue YoY)
PEN
PEN
+9.7% gap
PEN
22.1%
12.4%
SLG
Higher net margin
PEN
PEN
48.8% more per $
PEN
12.3%
-36.5%
SLG
Faster 2-yr revenue CAGR
SLG
SLG
Annualised
SLG
21.3%
17.6%
PEN

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
PEN
PEN
SLG
SLG
Revenue
$385.4M
$276.5M
Net Profit
$47.3M
$-100.8M
Gross Margin
68.0%
Operating Margin
15.4%
64.2%
Net Margin
12.3%
-36.5%
Revenue YoY
22.1%
12.4%
Net Profit YoY
40.6%
-870.0%
EPS (diluted)
$1.20
$-1.49

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
SLG
SLG
Q4 25
$385.4M
$276.5M
Q3 25
$354.7M
$244.8M
Q2 25
$339.5M
$241.9M
Q1 25
$324.1M
$239.8M
Q4 24
$315.5M
$245.9M
Q3 24
$301.0M
$229.7M
Q2 24
$299.4M
$222.8M
Q1 24
$278.7M
$187.9M
Net Profit
PEN
PEN
SLG
SLG
Q4 25
$47.3M
$-100.8M
Q3 25
$45.9M
$28.6M
Q2 25
$45.3M
$-7.4M
Q1 25
$39.2M
$-17.3M
Q4 24
$33.7M
$19.1M
Q3 24
$29.5M
$-9.5M
Q2 24
$-60.2M
$1.6M
Q1 24
$11.0M
$16.9M
Gross Margin
PEN
PEN
SLG
SLG
Q4 25
68.0%
Q3 25
67.8%
Q2 25
66.0%
Q1 25
66.6%
Q4 24
66.8%
Q3 24
66.5%
Q2 24
54.4%
Q1 24
65.0%
Operating Margin
PEN
PEN
SLG
SLG
Q4 25
15.4%
64.2%
Q3 25
13.8%
85.5%
Q2 25
12.0%
53.4%
Q1 25
12.4%
56.7%
Q4 24
13.6%
59.8%
Q3 24
11.7%
65.1%
Q2 24
-27.0%
79.2%
Q1 24
4.3%
Net Margin
PEN
PEN
SLG
SLG
Q4 25
12.3%
-36.5%
Q3 25
12.9%
11.7%
Q2 25
13.3%
-3.0%
Q1 25
12.1%
-7.2%
Q4 24
10.7%
7.8%
Q3 24
9.8%
-4.2%
Q2 24
-20.1%
0.7%
Q1 24
3.9%
9.0%
EPS (diluted)
PEN
PEN
SLG
SLG
Q4 25
$1.20
$-1.49
Q3 25
$1.17
$0.34
Q2 25
$1.15
$-0.16
Q1 25
$1.00
$-0.30
Q4 24
$0.88
$0.13
Q3 24
$0.75
$-0.21
Q2 24
$-1.55
$-0.04
Q1 24
$0.28
$0.20

Balance Sheet & Financial Strength

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

Metric
PEN
PEN
SLG
SLG
Cash + ST InvestmentsLiquidity on hand
$186.9M
$155.7M
Total DebtLower is stronger
Stockholders' EquityBook value
$1.4B
$3.7B
Total Assets
$1.8B
$11.1B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
PEN
PEN
SLG
SLG
Q4 25
$186.9M
$155.7M
Q3 25
$321.0M
$187.0M
Q2 25
$421.8M
$182.9M
Q1 25
$376.1M
$180.1M
Q4 24
$324.4M
$184.3M
Q3 24
$280.5M
$188.2M
Q2 24
$288.3M
$199.5M
Q1 24
$223.1M
$196.0M
Stockholders' Equity
PEN
PEN
SLG
SLG
Q4 25
$1.4B
$3.7B
Q3 25
$1.4B
$3.8B
Q2 25
$1.3B
$3.8B
Q1 25
$1.2B
$3.8B
Q4 24
$1.2B
$4.0B
Q3 24
$1.1B
$3.6B
Q2 24
$1.2B
$3.7B
Q1 24
$1.2B
$3.7B
Total Assets
PEN
PEN
SLG
SLG
Q4 25
$1.8B
$11.1B
Q3 25
$1.7B
$11.1B
Q2 25
$1.7B
$11.3B
Q1 25
$1.6B
$11.4B
Q4 24
$1.5B
$10.5B
Q3 24
$1.5B
$10.2B
Q2 24
$1.5B
$9.5B
Q1 24
$1.6B
$9.8B

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
SLG
SLG
Operating Cash FlowLast quarter
$86.5M
$82.9M
Free Cash FlowOCF − Capex
$68.0M
FCF MarginFCF / Revenue
17.7%
Capex IntensityCapex / Revenue
4.8%
Cash ConversionOCF / Net Profit
1.83×
TTM Free Cash FlowTrailing 4 quarters
$174.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
PEN
PEN
SLG
SLG
Q4 25
$86.5M
$82.9M
Q3 25
$58.3M
$-6.8M
Q2 25
$44.9M
$54.5M
Q1 25
$49.0M
$6.7M
Q4 24
$51.1M
$129.6M
Q3 24
$56.5M
$16.7M
Q2 24
$22.6M
$79.4M
Q1 24
$38.3M
$-24.7M
Free Cash Flow
PEN
PEN
SLG
SLG
Q4 25
$68.0M
Q3 25
$42.0M
Q2 25
$29.4M
Q1 25
$35.5M
Q4 24
$45.7M
Q3 24
$51.0M
Q2 24
$18.1M
Q1 24
$32.5M
FCF Margin
PEN
PEN
SLG
SLG
Q4 25
17.7%
Q3 25
11.8%
Q2 25
8.7%
Q1 25
11.0%
Q4 24
14.5%
Q3 24
16.9%
Q2 24
6.0%
Q1 24
11.7%
Capex Intensity
PEN
PEN
SLG
SLG
Q4 25
4.8%
Q3 25
4.6%
Q2 25
4.6%
Q1 25
4.2%
Q4 24
1.7%
Q3 24
1.8%
Q2 24
1.5%
Q1 24
2.1%
Cash Conversion
PEN
PEN
SLG
SLG
Q4 25
1.83×
Q3 25
1.27×
-0.24×
Q2 25
0.99×
Q1 25
1.25×
Q4 24
1.52×
6.77×
Q3 24
1.91×
Q2 24
50.33×
Q1 24
3.48×
-1.46×

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%

SLG
SLG

Real Estate Segment$223.1M81%
Other$35.9M13%
Debt And Preferred Equity Segment$17.4M6%

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