Reliance sees 'rarest of rare' F&O bets of unknown nature ahead of Jio's historic IPO: Report. Two traders have built unusually large F&O bets on Reliance Industries shares in a development that analysts have called "rarest of the rare", Mint reported. In the build-up to Reliance subsidiary Jio's historic IPO, the two traders purchased bets of unknown nature that exceeded 3% each of Reliance's marketwide position limit. Analysts believe the traders are betting on a.