mah this looks suspicious.... iconomi and the others who participated at the pre-sale ico bought santiment at a huge price, that was just before the eth pump, maybe they're trying to get the money back organizing this pump, they were loosing a lot of money with this investment... there's a huuuuuge usd volume on bitfinex, a lot of manipulation....

1    Bitfinex   SAN/USD    $39.476.100    $4.12    65.84%    Recently
2    Bitfinex   SAN/BTC    $16.746.600    $4.19    27.93%    Recently
3    Bitfinex   SAN/ETH    $2.743.740    $4.19    4.58%    Recently
4    Liqui           SAN/BTC    $277.214            $4.06    0.46%    Recently
5    Liqui           SAN/ETH    $237.530            $4.04    0.40%    Recently
6    Liqui           SAN/USDT $236.163            $3.97    0.39%    Recently
7    EtherDelta   SAN/ETH    $213.190       $3.73    0.36%    Recently
8    HitBTC   SAN/ETH    $20.577            $4.02    0.03%    Recently
9    IDEX     SAN/ETH    $3.200            $3.86    0.01%    Recently