[Robinhood's Self-Built Prediction Market Rothera Hits New Daily Trading Highs] Odaily Planet Daily reports that data from Robinhood's research community, Hood House, shows that Robinhood's self-built prediction market, Rothera, reached record highs in various trading metrics on June 14. Specifically: contract trading volume reached 109 million contracts, a 56% increase from the previous day; corresponding USD trading volume was $39.3 million, an 88% increase from the previous day; open interest reached 69.7 million contracts, a 12% increase from the previous day.