Until news of some sort comes out, no one will really know what was behind yesterdays pop.

My baseless speculation is that news of a significant partner is wafting through the air which would, even with out approval, give huge validation to Afrezza and Mnkd's technology (and a wave of big pharma's white flag that inhalables is the wave of the future all thanks to Mannkind's technosphere techonology).

Again, must my wild guess.

Here's hoping for MNKD to become the AAPL of biotech.