Valuation

• Port, an AI startup in cybersecurity, raised $100 million in its third funding round led by General Atlantic, achieving an $800 million valuation. • The funding supports expansion in cloud infrastructure protection technologies. • This round reflects investor confidence in AI-driven defenses against evolving cyber threats in the US market.

• Silicon Valley-based Resolve AI secured $40M in Series A extension funding, boosting its valuation to $1.5B to establish Resolve AI Labs focused on AI models optimized for production environments. • The funding supports development of reliable AI systems tailored for enterprise-scale deployment in US tech sectors. • This round highlights investor confidence in Resolve AI's infrastructure for bridging research-to-production AI gaps amid booming demand.

Bets placed on Middle East conflict has led to US firm experiencing big increase in volumePolymarket, the online prediction platform that hosts bets on events such as the Iran war, is in talks to raise $400m (£296m) at a valuation of up to $15bn.The company has gained notoriety in recent months over wagers placed on the Middle East conflict, including on the timing of US-Israel strikes against Iran, and on a US-Iran ceasefire, some of which appeared to bear signs of insider trading. Continue reading...

• Elon Musk's xAI announced a $6 billion Series C funding round on April 19, 2026, led by Sequoia Capital, valuing the startup at $24 billion post-money. • Funds will expand the Colossus supercomputer in Memphis, Tennessee, to 300,000 Nvidia GPUs for Grok AI training. • Investment accelerates US AI infrastructure race, countering China's advances and supporting domestic chip production.

• Perplexity AI announced a Series D funding round of $500 million at an $8.5 billion post-money valuation on April 19, led by prominent venture capital firms and strategic investors including Nvidia and Saudi PIF. • The funding will support expansion of Perplexity's AI search engine capabilities, development of enterprise API offerings, and geographic expansion into European and Asian markets with localized language models. • The round positions Perplexity as a serious challenger to Google Search and reflects growing investor confidence in AI-powered search alternatives and conversational information retrieval platforms.

• Databricks announced a Series H funding round of $10 billion at a $43 billion valuation on April 18, led by existing investors including Andreessen Horowitz and Sequoia Capital, to accelerate development of its AI and data platform. • The funding will support expansion of Databricks' lakehouse architecture, which integrates data warehousing and data lakes, and fund aggressive hiring in engineering and sales across North America. • The round positions Databricks as one of the fastest-growing enterprise software companies and signals strong investor confidence in the competitive data infrastructure market dominated by Snowflake and others.

• Satark AI, an India-based cybersecurity startup, raised pre-seed funding at a $4 million valuation to develop an AI-driven decision layer for reducing security alert noise. • The startup focuses on a critical enterprise security challenge: alert fatigue from excessive false positives that can slow incident response and waste analyst resources. • Satark AI's funding demonstrates investor confidence in AI-powered solutions targeting operational efficiency within security operations centers across global enterprises.

• Factory, a three-year-old startup, raised $150 million led by Khosla Ventures, achieving a $1.5 billion valuation on April 17, 2026. • The funding targets AI coding tools that automate software development for enterprises, freeing developers for complex tasks. • This round reflects booming investor interest in AI automation amid US tech sector's push for efficiency.