People who are selling now under ico price, they voluntarily loosing their money.
Dadi sold 10.000.000 tokens to private inverstors for 0.15 US$/token (0.40/0.50 US$ for pre- and crowdsale). The tokens had no lock-up period. These investors are still making 3x profit right now.
I hope they are done with dumping their cheap coins soon.
I can't imagine anyone else will sell under pre-/crowdsale price.