
MBI Deep Dives
Detailed public-company research, financial models, and recurring investing notes from a generalist seeking to understand business quality, valuation, and the assumptions behind an investment case.
Perimeter People / Newsletter author · MBI Deep Dives
Abdullah Al Rezwan writes MBI Deep Dives and uses the name Mostly Borrowed Ideas. He worked in sell-side financial sector research in Bangladesh and later on the US large-cap team at Madison Investments. He studied finance at the University of Dhaka, earned a Cornell MBA, and holds CFA and FRM credentials.
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Detailed public-company research, financial models, and recurring investing notes from a generalist seeking to understand business quality, valuation, and the assumptions behind an investment case.
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Profile checked September 18, 2026. Editorial notes are Perimeter’s interpretation.