Rule of 72
Investment PlanningA simple way to estimate how long it takes for an investment to double at a given annual interest rate.
Formula
Time to Double = 72 / Interest Rate
Why it matters
Quick mental math for investment planning. Helps compare different investment options without complex calculations.
Indian example
Related terms
Learn the concept
Time value of money →From the research
Valuation
A Comparative Financial Analysis of Three Listed Companies
Three IT services leaders, five years of numbers: similar growth, very different margins and returns on capital, and their October 2026 valuations.
MarketsIPO Issue Price vs. Listing Price vs. Subsequent Performance
Seven of India's most talked-about IPOs since 2021, tracked from issue price to listing to October 2026. Buying on listing day lost money in six of seven.
ValuationPaytm: Valuing a Company With No Clean Comparable
Paytm is part payments processor, part device business, part loan distributor. Why no single peer fits, and how to value it in parts and in reverse.