Investing Research Articles

Below is a weekly summary of our research findings for 1/27/25 through 1/31/25. 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.

Do annual stock picks from the ChatGPT large language model beat the market? To investigate, we ask ChatGPT to pick the top 10 stocks for each of 2020-2024 based on information available only before each year. For example, we ask ChatGPT to pick stocks for 2020 as follows: “Limiting yourself strictly to information that was… Keep Reading

How can researchers ensure that large language models (LLM), when tasked with time series forecasting, do not inject look-ahead bias and thereby inflate measured predictive power? In his brief November 2024 paper entitled “Look-Ahead Bias in Large Language Models (LLMs): Implications and Applications in Finance”, Miquel Noguer I Alonso addresses sources of LLM look-ahead bias… Keep Reading

A reader asked: “I am wondering how come you have not rated Motley Fool guys. Any insight?” To augment the test of Motley Fool public stock picks in “‘Buy These Stocks for 2019’ Forward Test”, we evaluate stock picks for 2021, 2022, 2023 and 2024 via “10 Top Stocks That Will Make You Richer in 2021”, “7… Keep Reading

Below is a weekly summary of our research findings for 1/21/25 through 1/24/25. 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.

A subscriber requested a test of Ray Dalio‘s All Weather (AW) portfolio with different rebalancing frequencies, allocated to exchange-traded funds (ETF) as asset class proxies as follows: 30% – Vanguard Total Stock Market (VTI) 40% – iShares 20+ Year Treasury (TLT) 15% – iShares 7-10 Year Treasury (IEF) 7.5% – SPDR Gold Shares (GLD) 7.5% –… Keep Reading

Generative large language models (LLM), such as ChatGPT, are best known for conversational summation of complex information. Their use in financial forecasting focuses on discrete news sentiment signals of positive (1), neutral (0) or negative (-1). Is there a way to extract more granularity in LLM sentiment estimates? In their October 2024 paper entitled “Cut… Keep Reading

Below is a weekly summary of our research findings for 1/13/25 through 1/17/25. 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 a generative artificial intelligence (AI) model, such as ChatGPT 4o, materially aid investors in understanding the implications of earnings conference call transcripts? In their December 2024 paper entitled “AI, Investment Decisions, and Inequality”, Alex Kim, David Kim, Maximilian Muhn, Valeri Nikolaev and Eric So conduct two surveys to explore how generative AI shapes investment… Keep Reading

Which price-to-earnings ratio is best for screening stocks? In the November 2024 first version of his paper entitled “Forward Price-Earnings Ratio”, Luca Conrads compares the practical abilities of seven price-to-earnings ratios to predict S&P 500 returns (see the chart below for four of these seven): Conventional price-to-earnings (PE) – current price divided by prior-year actual… Keep Reading