Deep dives newsletter
MBI Deep Dives (Mostly Borrowed Ideas): review of price, cadence & strategy
Daily emails on companies plus one long Deep Dive on a public company each month.
MBI Deep Dives is written by Abdullah Al Rezwan, a CFA charterholder who writes as "Mostly Borrowed Ideas". The About page says he sends daily emails on companies he follows, discloses his portfolio in them, and publishes one in-depth Deep Dive on a listed company every month. He says the service is not for readers who want hot stock tips. Paid plans are $30/month or $250/year.
Want to see what you get before paying? Read recent issues in the official archive.
Facts checked on 2026-10-16 at the official page. Prices can change; confirm before you subscribe. We do not publish ratings or performance claims.