A special OMG coin event Huobi Pro (EOS/USDT) has come 1180 days ago, observed on 12-05-2017.
In general, this category of events is positively determining the market value of cryptocurrency.
As there were other events near this one, it cannot be reported that only Huobi Pro (EOS/USDT) has impacted the OMG price, as other events could also have an impact.