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Insider Stampede

Two or more different insiders bought the same company in 30 days.

Open in Screener (Insider Stampede) →🔔 Set Email AlertView 12-Month Backtest Data ↓

Coordinated insider buying is hard to fake. When two or more separate insiders independently put money in within a month, it's rarely random. Currently shipping as experimental because EU-wide cluster data is still thin — when we slice the backtest to markets with dense filing coverage the edge is much larger, but honest cross-market numbers are modest.

How the rule fires

Insider buy · at least 2 distinct insiders (by insider_id) have bought the same company within the trailing 30 days.

Recently Fired (Live Signals)

20 live signals in last 60 days · Refreshed 2026-10-17Open in Screener →
Historical Validation

12-Month Backtest Performance

The equity curve and statistics below show how this rule performed across our 12-month out-of-sample backtest window (May 19, 2025 – April 19, 2026). Past performance is not indicative of future results.

Window: 2025-05-19 → 2026-04-19
Mean return @ 30d
+1.8%
Hit rate
54%
Trades scored
465
Unique tickers
105
Worst single loss
-52%
Signals / month
28.3
What €1,000 per signal would have done
Cumulative P&L
+€8,176
+1.8% mean per signal · 465 trades
€-6,905€-2,733€1,438€5,610€9,7812025-05-202025-12-122026-04-17

Hypothetical, frictionless. €1,000staked the moment each signal fired, closed at the screen's default horizon. No trading costs, no slippage, no taxes. Backtest window 2025-05-19 → 2026-04-19.

12-Month Out-of-Sample Backtest Trades

Historical trades captured during the May 2025 – April 2026 backtest window to validate signal efficacy.

465 signals · 30-day horizon · €1,000 notional
Filing dateCompanyInsiderValueHorizonRaw return€ P&L
2026-04-17🇳🇴
Borr Drilling Limited
$BORR
Primary insider — BORR
PDMR
—30d+18.7%+€187
2026-04-16🇨🇭
Alpine Select AG
$ALPN
Executive Management (Alpine Select AG)
Executive Management
€13k30d+2.2%+€22
2026-04-16🇸🇪
Skanska AB
Anders Danielsson
Chief Executive Officer (CEO)/Managing Directory
€28k30d-3.5%−€35
2026-04-16🇸🇪
Skanska AB
Anders Rättgård
Employee Representative of the Board of Directors or deputy Employee Representative of the Board of Directors
€40030d-3.5%−€35
2026-04-16🇸🇪
Skanska AB
Åsa Widholm Thunman
Other member of the company's administrative, management or supervisory body
€2k30d-3.5%−€35
2026-04-16🇸🇪
Skanska AB
Claes Larsson
Other member of the company's administrative, management or supervisory body
€14k30d-3.5%−€35
2026-04-16🇸🇪
Skanska AB
Fredrik Norrman
Employee Representative of the Board of Directors or deputy Employee Representative of the Board of Directors
€3k30d-3.5%−€35
2026-04-16🇸🇪
Skanska AB
Hans Reinholdsson
Employee Representative of the Board of Directors or deputy Employee Representative of the Board of Directors
€2k30d-3.5%−€35
2026-04-16🇸🇪
Skanska AB
Lena Hök
Other member of the company's administrative, management or supervisory body
€7k30d-3.5%−€35
2026-04-16🇸🇪
Skanska AB
Malte Fält
Employee Representative of the Board of Directors or deputy Employee Representative of the Board of Directors
€75630d-3.5%−€35

+ 455 more historical trades — sign up to see

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⚠️ Risks

All-markets backtest only just clears statistical significance (t=2.05) and the drop-top-5 mean is only +0.4% — almost all the edge lives in a handful of right-tail winners. Where data is dense (Sweden) the same predicate yields ~3% mean, but we're shipping the honest cross-market number until DE/CH/AT/NO cluster data backfills.

Get an email when this screen fires

Free. Each alert names the company, insider, role, and value, with a link to the source filing. We add the safety filters we have (earnings-window suppression where data exists); we never wrap any screen as a recommendation.