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Side-by-side financial comparison of PTC THERAPEUTICS, INC. (PTCT) 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 $164.7M, roughly 1.7× PTC THERAPEUTICS, INC.). SL GREEN REALTY CORP runs the higher net margin — -36.5% vs -82.0%, a 45.5% gap on every dollar of revenue. On growth, SL GREEN REALTY CORP posted the faster year-over-year revenue change (12.4% vs -22.7%). Over the past eight quarters, SL GREEN REALTY CORP's revenue compounded faster (21.3% CAGR vs -11.5%).

PTC Therapeutics, Inc. is a US pharmaceutical company focused on the development of orally administered small molecule drugs and gene therapy which regulate gene expression by targeting post-transcriptional control (PTC) mechanisms in orphan diseases.

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".

PTCT vs SLG — Head-to-Head

Bigger by revenue
SLG
SLG
1.7× larger
SLG
$276.5M
$164.7M
PTCT
Growing faster (revenue YoY)
SLG
SLG
+35.2% gap
SLG
12.4%
-22.7%
PTCT
Higher net margin
SLG
SLG
45.5% more per $
SLG
-36.5%
-82.0%
PTCT
Faster 2-yr revenue CAGR
SLG
SLG
Annualised
SLG
21.3%
-11.5%
PTCT

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
PTCT
PTCT
SLG
SLG
Revenue
$164.7M
$276.5M
Net Profit
$-135.0M
$-100.8M
Gross Margin
Operating Margin
-43.3%
64.2%
Net Margin
-82.0%
-36.5%
Revenue YoY
-22.7%
12.4%
Net Profit YoY
-104.8%
-870.0%
EPS (diluted)
$-1.63
$-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
PTCT
PTCT
SLG
SLG
Q4 25
$164.7M
$276.5M
Q3 25
$211.0M
$244.8M
Q2 25
$178.9M
$241.9M
Q1 25
$1.2B
$239.8M
Q4 24
$213.2M
$245.9M
Q3 24
$196.8M
$229.7M
Q2 24
$186.7M
$222.8M
Q1 24
$210.1M
$187.9M
Net Profit
PTCT
PTCT
SLG
SLG
Q4 25
$-135.0M
$-100.8M
Q3 25
$15.9M
$28.6M
Q2 25
$-64.8M
$-7.4M
Q1 25
$866.6M
$-17.3M
Q4 24
$-65.9M
$19.1M
Q3 24
$-106.7M
$-9.5M
Q2 24
$-99.2M
$1.6M
Q1 24
$-91.6M
$16.9M
Operating Margin
PTCT
PTCT
SLG
SLG
Q4 25
-43.3%
64.2%
Q3 25
1.4%
85.5%
Q2 25
-19.5%
53.4%
Q1 25
82.5%
56.7%
Q4 24
-76.2%
59.8%
Q3 24
-27.7%
65.1%
Q2 24
-21.5%
79.2%
Q1 24
-21.6%
Net Margin
PTCT
PTCT
SLG
SLG
Q4 25
-82.0%
-36.5%
Q3 25
7.5%
11.7%
Q2 25
-36.3%
-3.0%
Q1 25
73.7%
-7.2%
Q4 24
-30.9%
7.8%
Q3 24
-54.2%
-4.2%
Q2 24
-53.1%
0.7%
Q1 24
-43.6%
9.0%
EPS (diluted)
PTCT
PTCT
SLG
SLG
Q4 25
$-1.63
$-1.49
Q3 25
$0.20
$0.34
Q2 25
$-0.83
$-0.16
Q1 25
$10.04
$-0.30
Q4 24
$-0.85
$0.13
Q3 24
$-1.39
$-0.21
Q2 24
$-1.29
$-0.04
Q1 24
$-1.20
$0.20

Balance Sheet & Financial Strength

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

Metric
PTCT
PTCT
SLG
SLG
Cash + ST InvestmentsLiquidity on hand
$1.9B
$155.7M
Total DebtLower is stronger
Stockholders' EquityBook value
$-205.3M
$3.7B
Total Assets
$2.9B
$11.1B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
PTCT
PTCT
SLG
SLG
Q4 25
$1.9B
$155.7M
Q3 25
$1.7B
$187.0M
Q2 25
$2.0B
$182.9M
Q1 25
$2.0B
$180.1M
Q4 24
$1.1B
$184.3M
Q3 24
$1.0B
$188.2M
Q2 24
$1.1B
$199.5M
Q1 24
$884.8M
$196.0M
Stockholders' Equity
PTCT
PTCT
SLG
SLG
Q4 25
$-205.3M
$3.7B
Q3 25
$-155.8M
$3.8B
Q2 25
$-206.5M
$3.8B
Q1 25
$-185.8M
$3.8B
Q4 24
$-1.1B
$4.0B
Q3 24
$-1.1B
$3.6B
Q2 24
$-980.2M
$3.7B
Q1 24
$-893.9M
$3.7B
Total Assets
PTCT
PTCT
SLG
SLG
Q4 25
$2.9B
$11.1B
Q3 25
$2.6B
$11.1B
Q2 25
$2.6B
$11.3B
Q1 25
$2.7B
$11.4B
Q4 24
$1.7B
$10.5B
Q3 24
$1.8B
$10.2B
Q2 24
$1.9B
$9.5B
Q1 24
$1.8B
$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
PTCT
PTCT
SLG
SLG
Operating Cash FlowLast quarter
$-34.3M
$82.9M
Free Cash FlowOCF − Capex
$-36.6M
FCF MarginFCF / Revenue
-22.3%
Capex IntensityCapex / Revenue
1.4%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$702.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
PTCT
PTCT
SLG
SLG
Q4 25
$-34.3M
$82.9M
Q3 25
$-66.3M
$-6.8M
Q2 25
$-58.3M
$54.5M
Q1 25
$870.1M
$6.7M
Q4 24
$-30.0M
$129.6M
Q3 24
$-77.0M
$16.7M
Q2 24
$-71.5M
$79.4M
Q1 24
$70.8M
$-24.7M
Free Cash Flow
PTCT
PTCT
SLG
SLG
Q4 25
$-36.6M
Q3 25
$-69.7M
Q2 25
$-59.6M
Q1 25
$868.4M
Q4 24
$-33.8M
Q3 24
$-77.5M
Q2 24
$-78.8M
Q1 24
$61.2M
FCF Margin
PTCT
PTCT
SLG
SLG
Q4 25
-22.3%
Q3 25
-33.1%
Q2 25
-33.3%
Q1 25
73.8%
Q4 24
-15.8%
Q3 24
-39.4%
Q2 24
-42.2%
Q1 24
29.1%
Capex Intensity
PTCT
PTCT
SLG
SLG
Q4 25
1.4%
Q3 25
1.6%
Q2 25
0.7%
Q1 25
0.1%
Q4 24
1.8%
Q3 24
0.3%
Q2 24
4.0%
Q1 24
4.6%
Cash Conversion
PTCT
PTCT
SLG
SLG
Q4 25
Q3 25
-4.17×
-0.24×
Q2 25
Q1 25
1.00×
Q4 24
6.77×
Q3 24
Q2 24
50.33×
Q1 24
-1.46×

Financial Flow Comparison

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

Revenue Breakdown by Segment

PTCT
PTCT

Segment breakdown not available.

SLG
SLG

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

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