That is interesting you mention 1.8M through after 4.00pm That doesn't show on any chart I have ~ (like Incrediblecharts & Bigcharts - now updated, sorry) but it does show on ASX website: more than 5x the recent volume! Must be a big broking house was buying in with that volume. I Notice Huntleys has ceased coverage of API & only one broker recommendation was for a hold (from November). FWIW UBS' last report was in April & it had a neutral recommendation.
Chart below has not changed much ~ just a doji today, but importantly the price action is above the 50D_MA and the short term moving average is about to cross the 50.
API Price at posting:
69.0¢ Sentiment: Buy Disclosure: Held