Wow, looking at the details of the bailout on Knight, clearly they were desperate, as the deal to save KCG was essentially done to save the jobs and not the shareholders.
Apparently they issued a convertible note struck at just $1.50, and it pays 2%. These are rough calculations, but here is what happens to TBV and to EPS.
On TBVPS, the diluted share-count rises from 96mm to 366mm. The new equity value of the firm is 1 billion, so the result is about $2.75 per share.
On EPS, the calculation is harder, as it's difficult to tell what happens to sales now. I project that ultimately it will be less impactful, but, in the near-term, let's assume earnings decline 20% from what was previously expected. The interest will impact them by $8mm a year, but they won't be paying any taxes for quite some time. Running these calculations on the new share-count, I am coming up with about .50 per share. 10PE would get $5.
The stock is trading at $3 today as the shock of "$1.50" hits the market. Who knows how it plays out in the short-term, but the liquidity event is OVER. I guess one more unresolved issue is potential fines, but I doubt they will stick it to the company that is #1 with retail orders. This was really a fluke - a one-time freakish event, a perfect storm.
I thought that the "below $4" level was good before, and now I know it is in the long-term. The stock, though, could take time to work and is probably not a great speculation unless it drops back to $2.50.