down to 4.80 we go, page-14

Warrants are more for trading than exercising. Just a share derivative to GAMBLE on! Once sold it is gone...and you actually NEVER HAVE TO exercise it anyway.
They are DANGEROUS too!
So they need a lot of respect and don't be too greedy! Unless it is an 'affordable' amount to risk I guess.
Due to decay and the market makers gap, you can say it is a minus sum game....which if you predict right is good reward, but if you are WRONG it is far worse penalty (loss)!

So you want to be able to chart/predict quite well. And know what the warrant, and the issuers bid/asks, WILL do across a range. And be reasonably sure you are entering at a stocks 'lowish' area to give some extra odds cover.

So for AMP, I am looking for them to hit the lower line and hold it at least for most of a day. And assess closer then. Quite possibly they will look a lot like the last low where they hit the lower line (as per intra-day chart). 00 to 05 area the approx window. And looking like Monday for that so far.