In their October 2026 paper entitled "When Price Charts Rhyme: Historical Visual Retrieval for Stock Return Prediction", Hui Chen, Haoyu Liu, Ke Wu and Dexin Zhou report gross annualized hedge portfolio returns as high as 85% and gross annualized Sharpe ratios as high as 6.37 from strategies that predict returns by matching current price patterns to past patterns/subsequent returns. Their sample runs from 1993 through 2025. Their hedge portfolio is long (short) the tenth, or decile, of stocks with the highest (lowest) predicted returns, reformed weekly. Can an artificial intelligence (AI) model quickly summarize the practical import of these findings. To investigate, we provide the paper to Claude and simply ask: "Are the returns and Sharpe ratios reported in this paper possible?" Using Claude's response to this open-ended question and a follow-up specific question, we find that:
Subscribe to Keep Reading
Get the research edge serious investors rely on.
- 1,200+ research articles
- Monthly strategy signals
- 20+ years of backtested analysis
Cancel anytime