To be dead honest, someone discovered a vulnerability in the selling process. Where he bought large amount of shares. Due to the vulnerability, he was able to issue a parallel API request (must have used some tool) to double/triple sell the amount he actually bought. That ruined 8 of our market odds and drained most our liquidity. These 8 markets were the one with highest liquidity. Thus we are in the process of fixing those markets, its not easy, we have to remove those fraudulent sells, and replenish the markets with all the deficit liquidity. Its probably our mistake to release beta so early, but we just got a little impatient and wanted to show to the world what we are building.