fractional
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Stella Han
Stella Han is the co-founder and CEO of Fractional, a San Francisco startup that lets friends and strangers pool money to co-own investment real estate for as little as a few thousand dollars. A Carnegie Mellon computer science graduate and former senior software engineer at Affirm, she left fintech to attack a problem she grew up around: real estate is a great way to build wealth, and almost impossibly clunky to buy with other people. Fractional went through Y Combinator's Winter 2021 batch, raised a $5.5M seed led by CRV with backing from Will Smith and Kevin Durant, and a $15M Series A led by Fifth Wall in late 2024.
Rosie Hoggmascall
Rosie Hoggmascall is a London-based product and growth expert specialising in subscription apps, monetisation, and product-led growth. With a Cambridge education and a career spanning strategic communications to leading consumer tech startups, she is currently Chief Product & Growth Officer at Fyxer AI - an email productivity tool that grew from $1M to $30M ARR in 2025. She also runs 'Growth Dives', a weekly Substack newsletter delivering annotated product teardowns to 2,000+ subscribers with a remarkable 64% average open rate.