Cluster signals30 detected
Insider clusters
Companies where multiple executives buy within a rolling 30-day window. The strongest signal in academic literature (Cohen, Malloy & Pomorski 2012).
From cluster to score
The cluster is the heaviest factor, but not the only one. Here is how a grouped buy turns into a Sigma score, point by point.
One buy, scored factor by factor
Example: a 1.6 M EUR buy by the CEO of a 380 M EUR mid-cap, inside a 3-insider cluster. Each factor adds its points to the score, capped at 100.
01Directional cluster
+15 / 183 insiders, same directionSeveral insiders buying the same name, same way, within 30 days.
02Insider seniority
+22 / 22CEO / Managing DirectorWho is buying. A CEO or CFO carries more signal than a board member.
03Size vs market cap
+10 / 160.42% of market capHow big the buy is relative to the whole company (log-scaled).
04Insider track record
+11 / 14+6% avg 90d (n=4)How this insider's past buys actually performed (shrunk, look-ahead free).
05Share of insider flow
+6 / 860% of own flowHow concentrated this trade is within the insider's own activity on the name.
5 signalsMomentum, valuation, quality and analyst upside around the trade.
07Repeat accumulation
+4 / 62 prior buys (12m)The same insider has added to the position over the last 12 months.
08Analyst-contrarian
+6 / 6consensus 3.6 / 5Insider buys while sell-side consensus is lukewarm have run hotter.
09Directional conviction
+4 / 4net buyerThe insider is a net buyer of the name going into this trade.
Out-of-sample validated
-1.99
Sharpe PIT 2023-2024
+0.53
Sharpe PIT 2025-2026Q1
5.70 · 2.84
Selection (t, 2 windows)