郑伟

郑伟, listed as chief executive, has filed trades across 3 companies (mainly through SSE / SZSE (CSRC)), most often in 海思科, 东北制药 and 米奥会展. Over a trading history stretching from 19 May 2022 to 11 May 2023, the count stands at 8 filings.

Both buying and selling appear: 3 purchases worth €49k, against 5 sales worth €32.6M. Taken together, the sales exceed the purchases by €32.5M. A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant. So far in 2023, the count stands at no purchases and 4 sales.

Half of the purchases are above €14k and half below. 3 out of 3 purchases came within 30 days of a purchase by at least one other insider of the same company. When several insiders buy within a few weeks of each other, analysts speak of a cluster purchase. After 3 purchases with a full 90-day history, the hit rate stands at 0% and the median 90-day move at -5.9%. These figures describe past trades and do not predict future prices.

The newest entry dates from 11 May 2023: an open-market sale of €3.4M, in 海思科. The clock since the last published purchase (31 May 2022) now reads 1,622 days. Publication is fast: at least half of the trades appear on SSE / SZSE (CSRC) on the same day. This delay matters because a trade only becomes useful information once it is public. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. Source: insider filings from SSE / SZSE (CSRC). Past trades are no guide to future returns.