RE:RE:RE:AUSA warrants It doesn't matter if a run up happens, you will still have the right to buy it at 0.25. It can be worth $5 tomorrow, but you will still be entitled to purchasing them at 0.25.
I think you need to wait till till tomorrow to purchase your warrants, given the market needs to close on a set price. By tomorrow you should be able to purchase, again only if you want to purchase. Just some caution: If the share price goes below 0.25, and you've exercised all your warrants, you basically shot yourself in the foot and could have bought below the warrant price. That's why it's good to hold off a bit and see how the SP fluctuates.
Hope this make sense.