Money Math

Why You Don’t Get Paid For Diversifiable Risks

Finance theory dictates that an investor does not get paid for "diversifiable" risk. You do not get paid for idiosyncratic…

6 years ago

Negative Prices Make Sense

Negative Prices Oil prices for the prompt future traded negative this week. Matt Levine covered it well all week, I…

6 years ago

The Moontower Retirement Model

With all the market chaos, a bunch of friends, most of them outside the field of finance, have dove into…

6 years ago

Do Professional Investors Understand Fees?

Fees Are In Focus Retail Giant fund manager/brokerages like Vanguard and Fidelity have made fees front and center. Like Walmart,…

6 years ago

How Tails Constrain Investment Allocations

You would need to be living under a rock to not know about the importance of small probabilities on asset…

6 years ago

Market Mutations

I recently described markets as biology not physics in recognition of how players adapt. Let's discover 2 more opaque examples and their causes.…

6 years ago

Investing Is Biology Not Physics

Since the 1980s, there has been a tradition of Wall Street luring physicists from academia. Option math has more in…

6 years ago

Is There Actually An Equity Premium Puzzle?

The equity risk premium, or ERP, is defined as the excess return you get for investing in stocks over the…

7 years ago

How Much of Momentum Is Caused By Randomness?

Randomness In Momentum Everywhere (Link) This post from Breakingthemarket.com contends that randomness and rebalancing undoubtedly explain SOME of the findings…

7 years ago

How Math Is Sufficient To Explain Small Stock Outperformance

Takeaways from Diversification, Volatility, and Surprising Alpha by Fernholz et al. (Link) Summary It has been widely observed that capitalization-weighted…

7 years ago