Short answer, share count.
Almost 1.75 billion shares outstanding x .20 = $350 million market cap.
Using the issued share count the market cap is still around $300 million.
GERN is worth ~$600M
BTX is worth $230M
ASTM is worth $110M
Etc.
Say there was a split 25:1, shares outstanding is in the 70MM range, the PPS would be $5.00. This is more in line with the other companies here.
Market caps can be compared, PPS comparisons across companies are largely meaningless.
As far as risk reward, everyone has their own decisions to make.
Disclosure: Long ACTC