Investing Research Articles

Can machine learning exploit many stock similarity factors to produce exceptional statistical arbitrage (pairs trading) performance? In their August 2025 paper entitled “Attention Factors for Statistical Arbitrage”, Elliot Epstein, Rose Wang, Jaewon Choi and Markus Pelger present the Attention Factor Model, which employs machine learning to: Identify similar stocks based on both past returns and… Keep Reading

Is there a reliable and material market capitalization (size) effect among U.S. stocks around the turn-of-the-year (TOTY)? To check, we track cumulative returns from 20 trading days before through 20 trading days after the end of the calendar year for the Russell 2000 Index, the S&P 500 Index and the Dow Jones Industrial Average (DJIA)… Keep Reading

What are optimal intrinsic/absolute/time series momentum (IM) and simple moving average (SMA) lookback intervals for different asset class proxies? To investigate, we use data for the following ten asset class exchange-traded funds (ETF), plus Cash: Invesco DB Commodity Index Tracking (DBC) iShares MSCI Emerging Markets Index (EEM) iShares JPMorgan Emerging Markets Bond Fund (EMB) iShares… Keep Reading

Below is a weekly summary of our research findings for 10/20/25 through 10/24/25. 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.

The Inflation Forecast now incorporates actual total and core Consumer Price Index (CPI) data for September 2025. The actual total (core) inflation rate is very slightly higher than (very slightly lowerthan) forecasted.

Do gold and gold mining stocks exhibit exploitable seasonality? Using monthly closes for spot gold and the S&P 500 Index since December 1974, PHLX Gold/Silver Sector (XAU) since December 1983, AMEX Gold Bugs Index (HUI) since June 1996 and SPDR Gold Shares (GLD) since November 2004, all through September 2025, we find that:

How should investors think about the risks and returns of music royalties, which have become transparent in the streaming era, as an asset class? In their September 2025 paper entitled “Music as an Asset Class”, Sasha Stoikov, Aadityaa Singla, Umu Cetin and Luis Alonso Cendra Villalobos test three discounted cash flow (DCF) models on transactions… Keep Reading

The Sharpe ratio is the most widely used measure of investment efficiency. Is it truly reliable? In their September 2025 paper entitled “How to Use the Sharpe Ratio”, Marcos Lopez de Prado, Alexander Lipton and Vincent Zoonekynd review the shortcomings of conventional Sharpe ratio analysis and tackle these issues via several corrections. They also address… Keep Reading

How do exchange-traded-funds (ETF) focused on supplying renewable energy perform? To investigate, we consider nine of the largest renewable energy ETFs, all currently available, as follows: iShares Global Clean Energy (ICLN) Invesco Solar (TAN) First Trust NASDAQ Clean Edge Green Energy Index (QCLN) Invesco WilderHill Clean Energy (PBW) ALPS Clean Energy (ACES) Invesco Global Clean… Keep Reading

Will bitcoin replace gold as the pre-eminent safe haven asset? In his September 2025 paper entitled “Gold and Bitcoin”, Campbell Harvey compares and contrasts bitcoin and gold as alternative safe haven assets. Based on gold and bitcoin past returns and characteristics/risks, he concludes that: