
Ever noticed prices for the same item differ across stores? Why?
Image: en:User:Taak, Public domain, via Wikimedia Commons
Ever noticed prices for the same item differ across stores? Why?
Imagine going to three different stores to buy the same brand of sneakers. You find Store A selling them for 100, Store B for 95, and Store C for $105. You buy from Store B and sell to Store C for a profit.
You spot a chance to buy cheap from one place and sell for more at another. This is called triangular arbitrage, exploiting price differences across markets for the same asset.
Example
Buy sneakers for 95 at Store B, then sell them for 105 at Store C, making a $10 profit.
Remember this
Spotting and acting on price differences across markets can lead to profit.
Text adapted from Wikipedia, licensed under CC BY-SA 4.0.
Arbitrage pricing theory
APT uses multiple systematic risk factors; CAPM uses a single market index
Bid–ask spread
Bid-ask spread measures transaction costs and liquidity
Prediction market
Why does betting on the future cost more to place than to take?
Supply and demand
Market-clearing price where quantity supplied equals quantity demanded
Volatility smile
Implied volatility varies with strike price, contradicting Black-Scholes
Efficient-market hypothesis
Prices reflect all available information
Educational content, not financial advice.
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