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IONOS (IOS) investor relations material
IONOS Q2 2025 earnings summary
Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.Q2 2025 earnings summary7 Aug, 2025
Executive summary
Revenue grew 19.1% year-over-year to €895 million in H1 2025, with adjusted EBITDA up 23.3% to €268.7 million and customer base expanding by 150,000 to 6.47 million; ARPU up 4% year-over-year.
AI integration advanced across product lines, now present in 8 of 10, enhancing efficiency and creating new revenue streams; full integration targeted by 2025.
AdTech segment delivered 68–73% revenue growth in Q2/H1 2025, driven by product transition, though margins were temporarily lower.
Focus on digital sovereignty and European market leadership, with initiatives like the planned AI Gigafactory and AI Model Hub launches.
Share price rose 82.6% to €39.90, outperforming MDAX and DAX indices; inclusion in MDAX achieved in June 2025.
Financial highlights
H1 2025 revenue: €895 million (+19.1% YoY); adjusted EBITDA: €268.7 million (+23.3% YoY); margin: 30%.
Q2 2025 revenue: €448.7 million (+18.5% YoY); adjusted EBITDA: €137.7 million (+22.7% YoY); margin: 30.7%.
Adjusted EPS for H1 2025 was €0.91, up 43.7% year-over-year.
Net income increased to €115.4 million from €73.8 million YoY; EBIT up 33.4% to €203.9 million.
Free cash flow after leasing: €168 million in H1, up from €151 million YoY.
Outlook and guidance
FY 2025 revenue expected to grow in the high single-digit to low double-digit range; Digital Solutions & Cloud revenue projected to grow ~8% with ~35% adjusted EBITDA margin.
AdTech segment revenue guidance raised to ~€400 million; adjusted EBITDA guidance increased to ~€530 million (+17% YoY), margin expected to exceed 30%.
Public cloud expected to achieve ~20% growth in coming quarters; overall pricing approach remains balanced.
Management optimistic for H2 2025, citing strong business momentum and digitalization trends.
Why did IONOS shares outperform MDAX/DAX?
How will the product transition impact AdTech?
Explain the increased risk in regulatory environment.
Detail AI agent ARPU growth and margin expectations
Cloud growth drivers for H2 and beyond 2025
AdTech transition impact on H2 revenue outlook
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Q3 202511 Nov, 2025
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Frequently asked questions
IONOS Group SE is a web hosting company and SMB digitalization partner. In addition to web hosting, it also provides domain registration, SSL certificates, email services, website builder packages, and cloud hosting, as well as virtual private servers and dedicated servers. The company is a spin-off from United Internet AG, and went public in February 2023. IONOS Group SE was founded in 1988, and has two headquarters, one in Montabaur, Germany, and the other in Philadelphia, Pennsylvania.
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