Investing Research Articles

Do short-selling hedge funds consistently extract alpha from exuberant retail traders? In their March 2024 paper entitled “Short-Selling Hedge Funds”, Jialin Qian, Zhen Shi and Baozhong Yang examine the performance of hedge funds engaged in short-selling, as follows: Which hedge funds are likely short-sellers, and how do they compare with other hedge funds? What factors… Keep Reading

Can long volatility investors improve performance of their portfolios by scaling positions inversely to some measure of volatility? In his March 2024 paper entitled “Volatility-Managed Volatility Trading”, Aoxiang Yang tests volatility risk premium (VRP) timing strategies that hold a volatility asset and a risk-free asset, with the weight of the former inverse to some measure… Keep Reading

Below is a weekly summary of our research findings for 4/22/24 through 4/26/24. These summaries give you a quick snapshot of our content the past week so that you can quickly decide what’s relevant to your investing needs. Subscribers: To receive these weekly digests via email, click here to sign up for our mailing list.

Can Large Language Models (LLM) inject lookahead bias into backtests when rigor is lacking in generation of LLM training samples? In their preliminary and incomplete March 2024 paper entitled “Lookahead Bias in Pretrained Language Models”, Suproteem Sarkar and Keyon Vafa examine the potential for lookahead bias in backtests using the Llama-2 LLM to identify future firm… Keep Reading

Referring to “Turn-of-the-Month Effect Persistence and Robustness”, a subscriber asked about applying the Turn-of-the-Month (TOTM) effect to ProShares Ultra S&P500 (SSO). As in the referenced research, we define TOTM as the interval from the close five trading days before to the close four trading days after the last trading day of the month (a total… Keep Reading

Is the stock market overnight move effect exploitable? To investigate, we look at performances of two exchange-traded funds (ETF) designed to exploit the effect: NightShares 500 ETF (NSPY), which “seeks to return the night performance of a portfolio of 500 large cap U.S. companies.” The benchmark is SPDR S&P 500 ETF Trust (SPY). NightShares 2000… Keep Reading

How much do investors gain or sacrifice by focusing their portfolios on “sustainable” (green) stocks? In their March 2024 paper entitled “In Search of the True Greenium”, Marc Eskildsen, Markus Ibert, Theis Jensen and Lasse Pedersen broadly examine the green-minus-brown premium (the greenium). Specifically, they: Replicate and extend past studies to estimate the U.S. equity… Keep Reading

Below is a weekly summary of our research findings for 4/15/24 through 4/19/24. These summaries give you a quick snapshot of our content the past week so that you can quickly decide what’s relevant to your investing needs. Subscribers: To receive these weekly digests via email, click here to sign up for our mailing list.

Are sentiments conveyed in Seeking Alpha articles useful for stock picking? In their January 2023 paper entitled “Seeking Alpha: More Sophisticated Than Meets the Eye”, Duo Selina Pei, Abhinav Anand and Xing Huan apply two-pass natural language processing to test the informativeness of articles from Seeking Alpha incremental to publicly available earnings data. Specifically, they… Keep Reading

What are the implications of mainstream economics for bitcoin? In his March 2024 paper entitled “Bitcoin: What Does Mainstream Economics Have to Say?”, Joshua Hendrickson tackles the following questions: Why does money exist and what role does it play in society? How does bitcoin fit our understanding of this role? What is bitcoin worth? Is… Keep Reading