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Data studies

Evergreen studies computed from Quantisnow's own event history, such as how stocks behave after cluster insider buys or analyst upgrades, with full methodology. Written by the Quantisnow Research Desk from Quantisnow wire data. RSS

• Cluster insider buys beat SPY by 2.2% on average over 20 sessions, but the median edge was under 1% and gone by 60Oct 27, 2026
  Quantisnow studied 113 cluster insider buys from Sep 2025 to Oct 2026. The mean 20-session edge over SPY was +2.21%, but the median was +0.97%, only 53% of events beat the index, and the edge turned negative by 60 sessions.SPYOTLKAGIGIRIX