AIs and Short-term Stock Picks

How well do the short-term stock picks of publicly available artificial intelligence (AI) platforms perform? To investigate, we asked Grok, ChatGPT, Perplexity, Gemini and Meta AI the following questions on April 20, 2025:

• Please succinctly provide your unique best long idea for the next 30 days.
• Please succinctly provide your unique best shorting idea for the next 30 days.

We then: (1) calculated total returns for the resulting stock picks from the close on April 21, 2025 to the close on May 21, 2025; (2) averaged the returns for long and short picks; and, (3) compared  average returns for long and short picks. We include total returns for SPDR S&P 500 ETF (SPY) and Invesco QQQ Trust (QQQ) over this same interval for context. Using dividend-adjusted prices for the specified picks, we find that:

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