The whale feed
Who just crossed 5%?
When anyone — family offices, activist funds, sovereign wealth, famous CEOs buying into other companies — crosses a 3–5% voting- rights threshold in an EU or UK listed company, they must disclose it within 2–4 trading days. A different signal from Article 19 PDMR filings — conviction across the table, not inside one.
Matching filings
Showing 8 most recent| Filed | Filer | Company | Move | New % | Source |
|---|---|---|---|---|---|
| 2026-03-06 2mo ago | 🇨🇭Idorsia Ltd | Idorsia Ltd | ↓ crossed below | 24.35% | regulator → |
| 2025-10-25 6mo ago | 🇨🇭Idorsia Ltd | Idorsia Ltd | ↓ crossed below | 26.81% | regulator → |
| 2025-10-22 7mo ago | 🇨🇭Idorsia Ltd | Idorsia Ltd | ↑ crossed above | 8.42% | regulator → |
| 2025-10-16 7mo ago | 🇨🇭Idorsia Ltd | Idorsia Ltd | ↑ crossed above | 8.42% | regulator → |
| 2025-10-04 7mo ago | 🇨🇭Idorsia Ltd | Idorsia Ltd | ↑ crossed above | 1.56% | regulator → |
| 2025-08-29 8mo ago | 🇨🇭Idorsia Ltd | Idorsia Ltd | ↑ crossed above | 1.56% | regulator → |
| 2025-08-28 8mo ago | 🇨🇭Idorsia Ltd | Idorsia Ltd | ↑ crossed above | 9.81% | regulator → |
| 2025-05-27 11mo ago | 🇨🇭Idorsia Ltd | Idorsia Ltd | ↑ crossed above | 9.81% | regulator → |
Why this signal matters
A CEO buying €1m of their own stock is confidence. A family office quietly accumulating 5% of a small listed industrial is conviction across the table — and often a leading indicator of an activist campaign, a take-private bid, a sovereign wealth allocation, or a cornerstone investment. Academic literature (Brav, Jiang, Kim 2010 on activism; Bebchuk et al 2013) consistently finds substantial outperformance in the months following 13D / equivalent filings in the US. Europe's Transparency Directive is the European equivalent.