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Side-by-side financial comparison of AXCELIS TECHNOLOGIES INC (ACLS) 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 $238.3M, roughly 1.2× AXCELIS TECHNOLOGIES INC). AXCELIS TECHNOLOGIES INC runs the higher net margin — 14.4% vs -36.5%, a 50.9% gap on every dollar of revenue. On growth, SL GREEN REALTY CORP posted the faster year-over-year revenue change (12.4% vs -5.6%). Over the past eight quarters, SL GREEN REALTY CORP's revenue compounded faster (21.3% CAGR vs -2.8%).

Axcelis Technologies, Inc. is an American company engaging in the design, manufacture, and servicing of capital equipment for the semiconductor manufacturing industry worldwide. It produces ion implantation systems, including high and medium current implanters, and high energy implanters, and curing systems used in the fabrication of semiconductor chips. The company was incorporated in 1995 and is headquartered in Beverly, Massachusetts, United States.

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".

ACLS vs SLG — Head-to-Head

Bigger by revenue
SLG
SLG
1.2× larger
SLG
$276.5M
$238.3M
ACLS
Growing faster (revenue YoY)
SLG
SLG
+18.0% gap
SLG
12.4%
-5.6%
ACLS
Higher net margin
ACLS
ACLS
50.9% more per $
ACLS
14.4%
-36.5%
SLG
Faster 2-yr revenue CAGR
SLG
SLG
Annualised
SLG
21.3%
-2.8%
ACLS

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ACLS
ACLS
SLG
SLG
Revenue
$238.3M
$276.5M
Net Profit
$34.3M
$-100.8M
Gross Margin
47.0%
Operating Margin
15.2%
64.2%
Net Margin
14.4%
-36.5%
Revenue YoY
-5.6%
12.4%
Net Profit YoY
-31.3%
-870.0%
EPS (diluted)
$1.11
$-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
ACLS
ACLS
SLG
SLG
Q4 25
$238.3M
$276.5M
Q3 25
$213.6M
$244.8M
Q2 25
$194.5M
$241.9M
Q1 25
$192.6M
$239.8M
Q4 24
$252.4M
$245.9M
Q3 24
$256.6M
$229.7M
Q2 24
$256.5M
$222.8M
Q1 24
$252.4M
$187.9M
Net Profit
ACLS
ACLS
SLG
SLG
Q4 25
$34.3M
$-100.8M
Q3 25
$26.0M
$28.6M
Q2 25
$31.4M
$-7.4M
Q1 25
$28.6M
$-17.3M
Q4 24
$50.0M
$19.1M
Q3 24
$48.6M
$-9.5M
Q2 24
$50.9M
$1.6M
Q1 24
$51.6M
$16.9M
Gross Margin
ACLS
ACLS
SLG
SLG
Q4 25
47.0%
Q3 25
41.6%
Q2 25
44.9%
Q1 25
46.1%
Q4 24
46.0%
Q3 24
42.9%
Q2 24
43.8%
Q1 24
46.0%
Operating Margin
ACLS
ACLS
SLG
SLG
Q4 25
15.2%
64.2%
Q3 25
11.7%
85.5%
Q2 25
14.9%
53.4%
Q1 25
15.1%
56.7%
Q4 24
21.6%
59.8%
Q3 24
18.3%
65.1%
Q2 24
20.6%
79.2%
Q1 24
22.4%
Net Margin
ACLS
ACLS
SLG
SLG
Q4 25
14.4%
-36.5%
Q3 25
12.2%
11.7%
Q2 25
16.1%
-3.0%
Q1 25
14.8%
-7.2%
Q4 24
19.8%
7.8%
Q3 24
18.9%
-4.2%
Q2 24
19.8%
0.7%
Q1 24
20.4%
9.0%
EPS (diluted)
ACLS
ACLS
SLG
SLG
Q4 25
$1.11
$-1.49
Q3 25
$0.83
$0.34
Q2 25
$0.98
$-0.16
Q1 25
$0.88
$-0.30
Q4 24
$1.54
$0.13
Q3 24
$1.49
$-0.21
Q2 24
$1.55
$-0.04
Q1 24
$1.57
$0.20

Balance Sheet & Financial Strength

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

Metric
ACLS
ACLS
SLG
SLG
Cash + ST InvestmentsLiquidity on hand
$374.3M
$155.7M
Total DebtLower is stronger
Stockholders' EquityBook value
$1.0B
$3.7B
Total Assets
$1.4B
$11.1B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ACLS
ACLS
SLG
SLG
Q4 25
$374.3M
$155.7M
Q3 25
$449.6M
$187.0M
Q2 25
$549.8M
$182.9M
Q1 25
$587.1M
$180.1M
Q4 24
$571.3M
$184.3M
Q3 24
$579.4M
$188.2M
Q2 24
$548.3M
$199.5M
Q1 24
$530.2M
$196.0M
Stockholders' Equity
ACLS
ACLS
SLG
SLG
Q4 25
$1.0B
$3.7B
Q3 25
$1.0B
$3.8B
Q2 25
$1.0B
$3.8B
Q1 25
$1.0B
$3.8B
Q4 24
$1.0B
$4.0B
Q3 24
$975.6M
$3.6B
Q2 24
$934.9M
$3.7B
Q1 24
$901.7M
$3.7B
Total Assets
ACLS
ACLS
SLG
SLG
Q4 25
$1.4B
$11.1B
Q3 25
$1.4B
$11.1B
Q2 25
$1.3B
$11.3B
Q1 25
$1.3B
$11.4B
Q4 24
$1.3B
$10.5B
Q3 24
$1.3B
$10.2B
Q2 24
$1.3B
$9.5B
Q1 24
$1.3B
$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
ACLS
ACLS
SLG
SLG
Operating Cash FlowLast quarter
$-6.6M
$82.9M
Free Cash FlowOCF − Capex
$-8.9M
FCF MarginFCF / Revenue
-3.7%
Capex IntensityCapex / Revenue
1.0%
Cash ConversionOCF / Net Profit
-0.19×
TTM Free Cash FlowTrailing 4 quarters
$107.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ACLS
ACLS
SLG
SLG
Q4 25
$-6.6M
$82.9M
Q3 25
$45.4M
$-6.8M
Q2 25
$39.7M
$54.5M
Q1 25
$39.8M
$6.7M
Q4 24
$12.8M
$129.6M
Q3 24
$45.7M
$16.7M
Q2 24
$40.1M
$79.4M
Q1 24
$42.2M
$-24.7M
Free Cash Flow
ACLS
ACLS
SLG
SLG
Q4 25
$-8.9M
Q3 25
$43.3M
Q2 25
$37.7M
Q1 25
$34.8M
Q4 24
$8.1M
Q3 24
$41.8M
Q2 24
$38.1M
Q1 24
$40.6M
FCF Margin
ACLS
ACLS
SLG
SLG
Q4 25
-3.7%
Q3 25
20.3%
Q2 25
19.4%
Q1 25
18.1%
Q4 24
3.2%
Q3 24
16.3%
Q2 24
14.8%
Q1 24
16.1%
Capex Intensity
ACLS
ACLS
SLG
SLG
Q4 25
1.0%
Q3 25
0.9%
Q2 25
1.0%
Q1 25
2.6%
Q4 24
1.8%
Q3 24
1.5%
Q2 24
0.8%
Q1 24
0.6%
Cash Conversion
ACLS
ACLS
SLG
SLG
Q4 25
-0.19×
Q3 25
1.75×
-0.24×
Q2 25
1.27×
Q1 25
1.39×
Q4 24
0.26×
6.77×
Q3 24
0.94×
Q2 24
0.79×
50.33×
Q1 24
0.82×
-1.46×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ACLS
ACLS

Products$224.6M94%
Services$13.7M6%

SLG
SLG

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

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