UT18 Jun 2018 11:05
Opium. This is one of the definitions I found - all stocks traded on SETS or SETSmm have an opening auction between 07.50 and 08.00 and a closing Auction from 16.30 to 16.35. It is in fact these Auctions that officially set the days opening and closing share price for any share, how does it work?
Lets suppose that the last trade for B+B at 16.30 was £2 (it matters not whether its recorded buy or sell ).. end of trading for the day...... at 16.30, dealers/brokers/rsp's and even joe bloggs now with direct market access enter their limit buys and sells onto the SETS system, in the case of FTSE350 shares, these must be within 5% of the last recorded sp ie £2 ( 5% either side gives a range of £1.90 - £2.10 )..... NO trading takes place, just buy and sell bids entered.
At 16.35, the auction is ended and for the next 30secs or so the "system" matches automatically buy and sell bids at a share price that gives the greatest weighted average volume of all the entries, ie the biggest amount of "matches" it can find.....whatever this figure is, that is the official closing price of the share........ so at a time of 16.35 + a few seconds you may see a trade of 1,110,432 shares @ £2.0835p UT.. UT meaning it was an Uncrossed Trade during the Auction process, it is wrongly labeled a Buy or Sell when in actual fact it is a volume figure of a lot of buys and sells, very misleading.
No still don’t get it nor do I understand in relation to ACA that whilst is is normally between 1 or 2 00k it was 4.2 million the other day? Can you explain it to me?