Brass Echo
Whale crosses 5% — then a CEO or board chair buys.
Whale Wake, tightened: only fires when the follow-through buy is from a CEO or board member specifically. Highest mean return of any screen at +5.3%, but with narrower ticker coverage.
How the rule fires
TR-1 'crossed above' filing in the prior 30 days · follow-up insider buy is from a CEO or Board member.
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.
Every backtest trade
100 signals · 30-day horizon · €1,000 notional per trade| Filing date | Company | Insider | Value | Horizon | Raw return | € P&L | |
|---|---|---|---|---|---|---|---|
| 2026-04-17 | 🇨🇭 | Barry Callebaut AG $BARN | Board Member (Barry Callebaut AG) Board Member | €139k | 30d | +11.2% | +€112 |
| 2026-04-15 | 🇨🇭 | Partners Group Holding AG $PGHN | Board Member (Partners Group Holding AG) Board Member | €1.2M | 30d | -3.1% | −€31 |
| 2026-04-02 | 🇨🇭 | Partners Group Holding AG $PGHN | Board Member (Partners Group Holding AG) Board Member | €1.1M | 30d | +0.4% | +€4 |
| 2026-04-02 | 🇨🇭 | Partners Group Holding AG $PGHN | Board Member (Partners Group Holding AG) Board Member | €1.1M | 30d | +0.4% | +€4 |
| 2026-04-01 | 🇨🇭 | APG SGA SA $APGN | Board Member (APG SGA SA) Board Member | €72k | 30d | -8.1% | −€81 |
| 2026-04-01 | 🇨🇭 | Partners Group Holding AG $PGHN | Board Member (Partners Group Holding AG) Board Member | €1.1M | 30d | +0.1% | +€1 |
| 2026-03-31 | 🇨🇭 | APG SGA SA $APGN | Board Member (APG SGA SA) Board Member | €18k | 30d | -7.9% | −€79 |
| 2026-03-30 | 🇨🇭 | Galderma Group AG $GALD | Board Member (Galderma Group AG) Board Member | €2.3M | 30d | +6.3% | +€63 |
| 2026-03-30 | 🇨🇭 | APG SGA SA $APGN | Board Member (APG SGA SA) Board Member | €15k | 30d | -8.5% | −€85 |
| 2026-03-27 | 🇨🇭 | Partners Group Holding AG $PGHN | Board Member (Partners Group Holding AG) Board Member | €1.1M | 30d | +9.4% | +€94 |
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Sign up — free⚠️ Risks
Same CH-only data caveat as Whale Wake. DocMorris drove 52% of the result. Narrower than Whale Wake (34 unique tickers vs 48), so out-of-sample shrinkage risk is higher.
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.