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About
Ken Book is the founder of Pointwise, which recommends credit cards based on users' spending patterns and financial goals.
Founder at Fluid MarketsYC W23
Intro paths
Ken went through Y Combinator (Winter 2023) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Aaron Epstein, General Partner at Y Combinator — the partner who ran Fluid Markets's batch and knows the company first-hand. YC profile ↗
In turn, Ken can intro founders to Fluid Markets's investors below.
Fluid Markets's investors · 4
Co-founders at Fluid Markets

Frequently asked questions
- Who is Ken Book?
- Ken Book is the founder of Pointwise, which recommends credit cards based on users' spending patterns and financial goals.
- Where does Ken Book work?
- Ken Book is Founder of Fluid Markets.
- What companies did Ken Book found?
- Ken Book founded Fluid Markets.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
Goldman Sachs mafia651
Also came through, then founded or led a company.
Goldman Sachs mafia436
Also came through, then founded or led a company.
Yeshiva University mafia18
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Fluid Markets's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights
















