This week’s funding activity puts the infrastructure behind AI in sharper focus. Nebius’s debt financing sets the scale, while new capital for data-center power management, optical links, identity systems, and model security points to a market funding the operational layers that enterprise AI now depends on.
Nebius
Round: Convertible senior notes | Sector: Cloud
AI cloud provider Nebius closed a private offering of convertible senior notes with approximately $5.75 billion in gross proceeds, split between 0.50% notes due 2030 and 4.50% notes due 2034. The company plans to direct the capital toward data-center construction, GPU procurement, and expansion of its full-stack AI cloud, making this a balance-sheet financing with direct implications for enterprise capacity.
Socure
Round: Strategic growth investment | Sector: Cybersecurity
Identity verification and fraud prevention company Socure raised $156 million in a strategic growth investment led by Summit Partners, at a $5.2 billion valuation. Part of the capital will support its acquisition of Fravity AI and the integration of agentic investigation tools into RiskOS, a sign that identity platforms are moving beyond decisioning into more automated casework.
Emerald AI
Round: Series A | Sector: Cloud
Emerald AI raised an oversubscribed $150 million Series A at a $1.05 billion valuation, co-led by Energize Capital and DCVC, with participation from technology and power-sector investors including NVIDIA, Samsung Ventures, Siemens, and Salesforce Ventures. Its software adjusts AI data-center workloads and onsite energy resources in response to grid conditions, putting power management closer to the center of cloud infrastructure planning.
Alice
Round: Growth financing | Sector: Cybersecurity
AI trust, safety, and security company Alice announced $140 million in growth financing led by Apax Digital, with Samsung and SentinelOne among the participating investors. Alice tests models for jailbreaks and prompt injection, then gives enterprises policy controls and production monitoring, showing that model behavior is becoming a distinct security budget rather than an extension of conventional application testing.
Quintessent
Round: Series A | Sector: Networking
Optical interconnect company Quintessent raised a $40 million Series A led by Cycle Capital, with Goldman Sachs, Susquehanna International Group, and Osage University Partners also participating. The company is scaling a comb-laser product for AI clusters and data-center networks, where lower-power optical links are becoming a practical constraint on the next generation of compute deployments.
The Weekly Funding Pulse tracks the most significant IT infrastructure, cloud, semiconductor, networking, and ITSM funding rounds each week. Coverage is curated for enterprise IT professionals and decision-makers.
