Latest filing published 30 Oct 2026 for Expert Systems Holdings Ltd..
Filing timeline
BuySaleInsider track record
Closed purchases
Based on 3 purchases whose 90-day window has closed (published at least 91 days ago), the same population our ranking model reads.
Purchases by company
Since each purchase
- -26.8%Entry HK$0.16 · Close at T+365 HK$0.12
- -28.2%Entry HK$0.16 · Close at T+365 HK$0.11
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
Chu Siu Sum Alex: trading record in brief
Chu Siu Sum Alex appears in our data through filings on Expert Systems Holdings Ltd. shares, published by HKEX. The record holds 6 filings, for trades running from 29 August 2017 to 29 October 2026.
No open-market sale appears; the market trades are 4 purchases worth €8.2M. The amount is not disclosed for 1 filing. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay.
The median purchase comes to €4,467. Of 3 purchases, 2 formed part of a group of insiders buying within 30 days of each other. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase. Ninety days after publication, 3 purchases show a median change of +8.3%, with the price up in 67% of them. This is a record of the past, not a forecast.
The newest entry dates from 30 October 2026: a transaction, in Expert Systems Holdings Ltd. The latest purchase dates back some time: it was published 1,944 days ago, on 13 July 2021. The median gap between a trade and its publication by HKEX is 3 days. Until a filing is published, the market cannot know about the trade. Every figure here comes from the filings published by HKEX and describes the past, not future prices; it is not investment advice.
Companies and markets linked to Chu Siu Sum Alex
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
- 450,000,000 sharesShareXHKGHKEX:DA20261030E00109
- 450,000,000 sharesShareXHKGHKEX:DA20211012E00054
- 450,000,000 shares@ HK$0.16899.9% of flowShareXHKGHKEX:DA20210713E00261Canonical exit: 7 Oct 2021 (T+90)
- 500,000 sharesShareXHKGHKEX:DA20190418E00224Canonical exit: 14 Jul 2019 (T+90)
- 250,000 shares@ HK$0.153847.9% of flowShareXHKGHKEX:DA20170831E00022Canonical exit: 27 Nov 2017 (T+90)
- 260,000 shares@ HK$0.159952.1% of flowShareXHKGHKEX:DA20170831E00023Canonical exit: 28 Nov 2017 (T+90)
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