Challenger have been accumulating in March and April including a...

Challenger have been accumulating in March and April including a big lump of 1,172,214 shares on the 15th April after shorts had increased and SP went under $6. CGF bought over 3.7 million shares in total for their clients. That's 1.06% of the shares.
The following 3 trading days shorts were reported as ~80%,~80% and ~60% of the trading volume. NXT is at #3 on the short top 100 as of the 17th.
The SP went up about 20c after the big buy from CGF but has also risen another 30c after that.
I think I missed my opportunity just before Easter as my attention was elsewhere. Probably still worth a top up.

If the holders can avoid selling under the short pressure before the next positive announcement then the SP may get a big kick IMHO.
Gltah