📝 Castelion raising $350M

News of the Day

Hypersonic weapons startup Castelion is raising a $350 million Series B at a multi-billion-dollar valuation, with Lightspeed and Altimeter Capital leading the round just months after Castelion’s $100 million Series A. Taking a page from SpaceX’s playbook with rapid iteration and vertical integration, Castelion is aiming to mass-produce lower-cost hypersonic missiles, including its Blackbeard Ground Launch system, which is now backed by $25 million in the U.S. Army’s 2026 budget. If initial tests are successful, Castelion could begin delivering missiles in 2028, putting significant pressure on legacy defence giants like Lockheed, Raytheon, and Northrop.

The Future of AI in Marketing. Your Shortcut to Smarter, Faster Marketing.

This guide distills 10 AI strategies from industry leaders that are transforming marketing.

• Learn how HubSpot's engineering team achieved 15-20% productivity gains with AI

• Learn how AI-driven emails achieved 94% higher conversion rates

• Discover 7 ways to enhance your marketing strategy with AI.

Outpace your competitors by mastering AI.

Get Your Free Guide

If you have tweets you want to submit to be featured here (from you or someone you like), reply to this email with a link!

Chart of the Day

Learn how to make AI work for you

AI won’t take your job, but a person using AI might. That’s why 1,000,000+ professionals read The Rundown AI – the free newsletter that keeps you updated on the latest AI news and teaches you how to use it in just 5 minutes a day.

Sign up to start learning.

Are you looking to grow your business? Here is how I can help:

📱Book a Strategy Call to get 1:1 feedback on your pitch, pitch deck and/or fundraising strategy. (If you need general startup advice, then reply to this email, and I’ll let you know if/how I can help.)

Onwards and Upwards,

Liam Gill