OREANDA-NEWS. On 06 May 2008 was announced, that for the week of March 31st – April 04th, 2008 the total trading volume on FORTS (Futures & Options on RTS) equaled 211,1 billion rubles or 5,1 million contracts. The total open interest as of the last day of the week, April 04th, 2008 reached 263,7 billon rubles or 6,5 million contracts.