PPK Value, page-571

ur screenshot does not display enough data ..... you are missing one of ur 10 partial buy trades from the screenshot, and it does not show which exchange was used to execute each part of the buy order.

the trade done for your 3000 unit buy was fine. each exchange executed parcels at a cheaper price before executing at a higher buy price.... nothing was jumped in other words.

the trade was routed as a sweep order by ur participant.... it was 10 parcels executed as 4 partials on ASX, and 6 partial fills on CBOE.
you got the entire order at under 41cents (when ur limit was 42 cents for the buy)
of note is that ur order ended on a 42 cent partial fill done at CBOE (the most expensive parcel in your entire order fill of the 10 parcels)
after ur order someone else did a 40 cent sell trade on CBOE....... so the stock actually finished the day at 40 cents...... not the 41 cents recorded as the days closing price on the ASX.

the dumper of monday, tuesday and wednesday did not show up today it appears...... prolly a good thing even though a red day, given it was not as red as it coulda been.

again, ur buy order was fine....it was a sweep.

have a good trip.