Insider & Short-Selling Daily, October 27

Every trading day subscribers get the activity that often moves ahead of the news, matched to the model's ranking and the model portfolio: insider buying and selling, unusual options volume, implied-volatility jumps, crowded shorts, short-selling spikes and analyst moves.

Inside today's subscriber note

• Signals on the model portfolio's holdings (2)
• Insider buying (4)
• Insider selling in top-ranked and held names (8)
• Short-selling spikes (5)

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Research only, not investment advice or a recommendation to buy or sell any security. Rankings change as data changes and can be wrong. Torvanta and its founder may hold positions in securities discussed, and trade only after the information is published to all subscribers. Past performance does not guarantee future results.

More research

• Market brief, Thursday October 29: futures little changed 2026-10-29
• Fair Value Check: Berkshire Hathaway is overvalued on our numbers 2026-10-29
• The Giants Monitor: the top 10 are 42.0% of the S&P 500 (week of October 26) 2026-10-29
• Insider & Short-Selling Daily, October 28 2026-10-28
• Market brief, October 28: S&P 500 rises 0.1% as software stocks slide 2026-10-28
• Why it moved, October 28: Fortinet -27%, F5 -20%, ServiceNow -19% 2026-10-28
• Midweek Movers: where the model's view shifted this week 2026-10-28
• Market brief, October 27: S&P 500 rises 0.6% as chip stocks rally 2026-10-27
• Why it moved, October 27: Xylem -14%, Pentair +13%, Boeing -11% 2026-10-27
• Dividend Watch, October 27: Vici Properties leads covered yields 2026-10-27
• Insider & Short-Selling Daily, October 26 2026-10-26
• Market brief, October 26: S&P 500 rises 0.7% as chip stocks rally 2026-10-26

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