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10-K Diver
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I teach finance and investing concepts via Twitter threads.
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Jan 1, 2023
1/ Get a cup of coffee. In this thread, I'll walk you through "Gambler's Ruin". This is a classic exercise in probability theory. But going beyond the math, this exercise can teach us a lot about life, business, and investing. twitter.com/10kdive
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Oct 23, 2022
1/ Get a cup of coffee. In this thread, I'll walk you through 2 key portfolio diversification principles: (i) Minimizing correlations, and (ii) Re-balancing intelligently. You don't need Markowitz's portfolio theory or the Kelly Criterion to unde
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Sep 11, 2022
1/ Get a cup of coffee. In this thread, I'll walk you through the P/E Ratio. Why do some companies trade at 5x earnings and others trade at 50x earnings? When I first started investing, this was hard for me to understand. So, let me break it dow
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Jun 26, 2022
1/ Get a cup of coffee. In this thread, I'll walk you through a probabilistic thought experiment. This will help you appreciate some key investing concepts: - SURVIVAL is key, - we need LONG TERM focus, - the LUCK vs SKILL conundrum, and - the CE
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Apr 13, 2022
1/ Get a cup of coffee. In this thread, we'll analyze the "Devil's Card Game". This is a super useful thought exercise. It can teach us several key concepts in economics, probability, betting, hedging, investor/market psychology, etc. https://t.co
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Apr 3, 2022
1/ Get a cup of coffee. In this thread, I'll walk you through Income Statements: a) What they are, b) What key things about a business we can learn from them, and c) Some important caveats we should keep in mind while reading them. https://t.co/
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Feb 27, 2022
1/ Get a cup of coffee. In this thread, I'll walk you through Recurrence Equations. This is a beautiful area of math, with many finance/investing applications. Plus, it can teach us a lot about problem solving in general -- how to simplify proble
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Feb 5, 2022
1/ Get a cup of coffee. In this thread, I'll show you how to read and understand a company's Balance Sheet. As investors, we should be able to judge businesses by looking at their financial statements. And the Balance Sheet, of course, is 1 of 3
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Jan 8, 2022
1/ Get a cup of coffee. In this thread, I'll help you understand the Volatility Tax. Whether you're a fundamentals-driven, buy-and-hold investor or an esoteric derivatives trader, this thread will help you hone your craft -- by sharpening your pro
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Nov 20, 2021
1/ Get a cup of coffee. In this thread, I'll help you understand Escape Velocity -- a super interesting physics concept that can also teach us some valuable life lessons. https://t.co/dPXEKaUDJY
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Aug 7, 2021
1/ Get a cup of coffee. In this thread, I'll show you how the P/E ratio of a portfolio is related to the P/E ratios of its individual stocks. The math here is beautiful. It involves harmonic means and a super elegant theorem known as the Cauchy-Sc
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Apr 17, 2021
1/ Get a cup of coffee. In this thread, I'll help you understand Markov Chains. In life, and in investing, we often come across situations where luck/chance plays a major role. And Markov Chains are often a great way to model and analyze such sit
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