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

SL GREEN REALTY CORP is the larger business by last-quarter revenue ($276.5M vs $139.3M, roughly 2.0× Proto Labs Inc). Proto Labs Inc runs the higher net margin — 5.8% vs -36.5%, a 42.3% gap on every dollar of revenue. On growth, SL GREEN REALTY CORP posted the faster year-over-year revenue change (12.4% vs 10.4%). Over the past eight quarters, SL GREEN REALTY CORP's revenue compounded faster (21.3% CAGR vs 5.3%).

Protolabs is a company that provides rapid manufacturing of 3D printed, CNC-machined, sheet metal, and injection-molded custom parts for prototyping and production. Markets like medical devices, aerospace, electronics, appliances, automotive and consumer products use these parts. Protolabs' headquarters are located in Maple Plain, Minnesota, with Minnesota-based manufacturing facilities in Plymouth, Brooklyn Park, and Rosemount, along with additional facilities in Nashua, New Hampshire and Ca...

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".

PRLB vs SLG — Head-to-Head

Bigger by revenue
SLG
SLG
2.0× larger
SLG
$276.5M
$139.3M
PRLB
Growing faster (revenue YoY)
SLG
SLG
+2.0% gap
SLG
12.4%
10.4%
PRLB
Higher net margin
PRLB
PRLB
42.3% more per $
PRLB
5.8%
-36.5%
SLG
Faster 2-yr revenue CAGR
SLG
SLG
Annualised
SLG
21.3%
5.3%
PRLB

Income Statement — Q1 FY2026 vs Q4 FY2025

Metric
PRLB
PRLB
SLG
SLG
Revenue
$139.3M
$276.5M
Net Profit
$8.1M
$-100.8M
Gross Margin
45.6%
Operating Margin
7.1%
64.2%
Net Margin
5.8%
-36.5%
Revenue YoY
10.4%
12.4%
Net Profit YoY
125.4%
-870.0%
EPS (diluted)
$0.29
$-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
PRLB
PRLB
SLG
SLG
Q1 26
$139.3M
Q4 25
$136.5M
$276.5M
Q3 25
$135.4M
$244.8M
Q2 25
$135.1M
$241.9M
Q1 25
$126.2M
$239.8M
Q4 24
$121.8M
$245.9M
Q3 24
$125.6M
$229.7M
Q2 24
$125.6M
$222.8M
Net Profit
PRLB
PRLB
SLG
SLG
Q1 26
$8.1M
Q4 25
$-100.8M
Q3 25
$7.2M
$28.6M
Q2 25
$4.4M
$-7.4M
Q1 25
$3.6M
$-17.3M
Q4 24
$19.1M
Q3 24
$7.2M
$-9.5M
Q2 24
$4.5M
$1.6M
Gross Margin
PRLB
PRLB
SLG
SLG
Q1 26
45.6%
Q4 25
44.2%
Q3 25
45.3%
Q2 25
44.3%
Q1 25
44.1%
Q4 24
42.7%
Q3 24
45.6%
Q2 24
45.0%
Operating Margin
PRLB
PRLB
SLG
SLG
Q1 26
7.1%
Q4 25
5.0%
64.2%
Q3 25
6.5%
85.5%
Q2 25
3.7%
53.4%
Q1 25
3.6%
56.7%
Q4 24
-1.2%
59.8%
Q3 24
6.8%
65.1%
Q2 24
4.8%
79.2%
Net Margin
PRLB
PRLB
SLG
SLG
Q1 26
5.8%
Q4 25
-36.5%
Q3 25
5.3%
11.7%
Q2 25
3.3%
-3.0%
Q1 25
2.9%
-7.2%
Q4 24
7.8%
Q3 24
5.7%
-4.2%
Q2 24
3.6%
0.7%
EPS (diluted)
PRLB
PRLB
SLG
SLG
Q1 26
$0.29
Q4 25
$0.25
$-1.49
Q3 25
$0.30
$0.34
Q2 25
$0.18
$-0.16
Q1 25
$0.15
$-0.30
Q4 24
$-0.01
$0.13
Q3 24
$0.29
$-0.21
Q2 24
$0.18
$-0.04

Balance Sheet & Financial Strength

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

Metric
PRLB
PRLB
SLG
SLG
Cash + ST InvestmentsLiquidity on hand
$124.0M
$155.7M
Total DebtLower is stronger
Stockholders' EquityBook value
$683.1M
$3.7B
Total Assets
$778.6M
$11.1B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
PRLB
PRLB
SLG
SLG
Q1 26
$124.0M
Q4 25
$128.1M
$155.7M
Q3 25
$119.2M
$187.0M
Q2 25
$103.2M
$182.9M
Q1 25
$96.8M
$180.1M
Q4 24
$103.1M
$184.3M
Q3 24
$100.5M
$188.2M
Q2 24
$112.9M
$199.5M
Stockholders' Equity
PRLB
PRLB
SLG
SLG
Q1 26
$683.1M
Q4 25
$673.9M
$3.7B
Q3 25
$664.7M
$3.8B
Q2 25
$664.7M
$3.8B
Q1 25
$656.8M
$3.8B
Q4 24
$670.2M
$4.0B
Q3 24
$680.0M
$3.6B
Q2 24
$685.2M
$3.7B
Total Assets
PRLB
PRLB
SLG
SLG
Q1 26
$778.6M
Q4 25
$763.4M
$11.1B
Q3 25
$756.9M
$11.1B
Q2 25
$743.3M
$11.3B
Q1 25
$737.5M
$11.4B
Q4 24
$743.5M
$10.5B
Q3 24
$753.8M
$10.2B
Q2 24
$758.2M
$9.5B

Cash Flow & Capital Efficiency

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

Metric
PRLB
PRLB
SLG
SLG
Operating Cash FlowLast quarter
$17.5M
$82.9M
Free Cash FlowOCF − Capex
FCF MarginFCF / Revenue
Capex IntensityCapex / Revenue
Cash ConversionOCF / Net Profit
2.16×
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
PRLB
PRLB
SLG
SLG
Q1 26
$17.5M
Q4 25
$16.5M
$82.9M
Q3 25
$29.1M
$-6.8M
Q2 25
$10.6M
$54.5M
Q1 25
$18.4M
$6.7M
Q4 24
$17.3M
$129.6M
Q3 24
$24.8M
$16.7M
Q2 24
$14.4M
$79.4M
Free Cash Flow
PRLB
PRLB
SLG
SLG
Q1 26
Q4 25
$8.4M
Q3 25
$25.0M
Q2 25
$9.1M
Q1 25
$17.1M
Q4 24
$16.5M
Q3 24
$23.2M
Q2 24
$10.2M
FCF Margin
PRLB
PRLB
SLG
SLG
Q1 26
Q4 25
6.2%
Q3 25
18.5%
Q2 25
6.7%
Q1 25
13.6%
Q4 24
13.5%
Q3 24
18.5%
Q2 24
8.2%
Capex Intensity
PRLB
PRLB
SLG
SLG
Q1 26
Q4 25
5.9%
Q3 25
3.0%
Q2 25
1.1%
Q1 25
1.0%
Q4 24
0.7%
Q3 24
1.2%
Q2 24
3.3%
Cash Conversion
PRLB
PRLB
SLG
SLG
Q1 26
2.16×
Q4 25
Q3 25
4.03×
-0.24×
Q2 25
2.39×
Q1 25
5.11×
Q4 24
6.77×
Q3 24
3.44×
Q2 24
3.18×
50.33×

Financial Flow Comparison

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

Revenue Breakdown by Segment

PRLB
PRLB

CNC Machining$63.2M45%
Injection Molding$51.1M37%
3D Printing$20.5M15%
Sheet Metal$4.4M3%
Other Revenue$207.0K0%

SLG
SLG

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

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