RUQQI Blog
Practical articles on investing, markets and the ideas behind the numbers — many with interactive models you can try yourself.
Expected return, volatility, beta, correlation — every one of them is estimated from a slice of the past. Four properties decide how much weight any of those numbers can carry.
Joint distributions allow investors to examine how two or more random variables behave at the same time. This is essential for assessing correlation and dependence between asset returns, which are core components of risk management and portfolio diversification.
A share price that can only rise or fall 10% a year is enough to build a price forecast, measure the risk around it, update it as the years unfold, and show why long-run prices lean the way they do.
How the same fund return produces three different GP payouts — and why all three structures agree the moment a fund falls short of its hurdle.
One equation. Four instruments. Zero arbitrage. Understanding put-call parity is not just an exam requirement — it is the foundation for understanding how options, stocks, and bonds are all connected through a single no-arbitrage constraint.
A worked example comparing the cash flow yield method against the weighted average method — and the one condition under which they always agree.
Using CoreWeave's $3.5 billion convertible note issuance to understand the mechanics, valuation, and strategic logic behind one of finance's most elegant instruments.
Free lessons on YouTube, or a full structured course when you're ready.
