T+1 Settlement: How Stock Trades Now Clear in One Day
T+1 settlement means US stock trades settle one business day after execution. Here’s the mechanics, timeline, and what changed for investors.
investing basics
What Is the P/E Ratio – and When Does It Mislead?
The price-to-earnings ratio is the most-quoted valuation metric on Wall Street. Here’s the formula, trailing vs forward, and when it breaks.
Options Explained: Calls, Puts, Strikes & Expiry Basics
Beginner-friendly guide to stock options: how calls, puts, strike price, expiry, and premium actually work, with worked examples and payoff diagrams.
Leveraged ETFs Explained: Daily Reset and Volatility Drag
How TQQQ, SQQQ, and other daily-reset ETFs really work — the compounding math, when they overshoot, and when volatility eats them alive.
Bond Duration and Convexity Explained: How Prices Move
Duration tells you how much a bond’s price will move for a 1% change in yields. Convexity refines the estimate for big moves. Here’s how both actually work.
Repo and Reverse Repo Explained: The Plumbing of Rates
How the US repo market really works: repo vs reverse repo, SOFR, the Fed’s RRP floor and SRF ceiling, and what broke in September 2019.
Fed Funds Futures Explained: How Markets Price Rate Cuts
Fed funds futures let traders bet on the path of the overnight rate. Here is how the contract works, and how CME FedWatch turns prices into cut probabilities.
How ETFs Actually Work: Creation, Redemption, and APs
ETFs trade like stocks but avoid mutual-fund cash drag by swapping baskets in-kind with authorized participants. Here’s the mechanism in plain English.
Modern Portfolio Theory and the Efficient Frontier
How Harry Markowitz’s 1952 paper reshaped investing: expected return, variance, correlation, the efficient frontier, and where MPT breaks in real markets.
Volatility Skew and Smile Explained: Why OTM Puts Cost More
Why S&P 500 puts trade richer than calls, where the smile lives, and how the CBOE SKEW Index quantifies tail risk.