WorldQuant Quantitative Researcher Interview Question
In this article, we delve deep into the concept of arbitrage, its types, real-world applications, and its significance in the context of a WorldQuant Quantitative Researcher interview. We will also solve and explain common interview questions related to arbitrage, ensuring you are well-prepared to tackle them with confidence.
At its core, arbitrage refers to the simultaneous purchase and sale of an asset in different markets to profit from price discrepancies. It is a cornerstone of financial theory and quantitative trading, ensuring that markets remain efficient. The concept is simple yet profound: if the same asset is priced differently across markets, a trader can buy low in one market and sell high in another, locking in a risk-free profit.
In financial mathematics, arbitrage is defined as a trading strategy that requires no initial investment, has no risk of loss, and a positive probability of profit. Formally, an arbitrage opportunity exists if there exists a portfolio \( \pi \) such that:
