Oil-to-telecom conglomerate Reliance Industries contributed to most of the gains in benchmark index Sensex on Friday as it ended the day at Rs 2,094.90, up 5.9% on BSE. Sushil Choksey of Indus Equity Advisors decodes factors behind the rally in RIL stock. Edited excerpts: Was today's rally in Reliance shares surprising? What were the triggers? Reliance was underperforming since the last quarter. Nifty has gone up by almost 700-800 points since then. RIL has the highest weightage in Nifty. The prices of petrochemical products might be at a decade high now. The prices of polymer has also gone up. There were some reports by some foreign brokerage houses this morning related to this.