IVZ Share Price, page-17866

Note that the trade you've highlighted,plus the previous 3 trades - also all at 17.0c - were all executed @ 10.32.54am.
I've often reported/posted before, on the DT & other specific stock Threads, about similar "large" trade quantities all being bought as 1 block, or parcel, obviously? by 1 buyer. In this case -per your Course of Sales screenshot - from 4 different sellers, = to a total of exactly 550,000 shares for exactly $99,800.
I've often seen blocks like this before - in IVZ too - where 1 same-time block is for a million plus, bought from 20-30 sellers.
Serious bikkies outlaid eh? by a Soph or Insto?
My Sentiment today is back to Hold, as the gap down - from 17.5 to 16.0 - per my 6-month Daily Candles chart on 20 Nov - could fill today, followed by some ST profit-taking, out of the last 4 consecutive days' rises.