Mumbai, July 15 (IANS) Heavyweight scrips soared a whopping 20 percent in the futures and options segment as some freak trades spiked the price of blue-chip companies on the Sensex, the 30-scrip benchmark index of the Bombay Stock Exchange, Friday.

Companies with the largest market capitalisation, like Reliance Industries and ONGC, saw their share prices jump almost 20 percent, but soon a correction saw them recede to lower levels.

While the RIL scrip rose to Rs.1,040.25 in the futures and options segment from the previous close at Rs.866.90, the ONGC stock went up to Rs.340.35 compared to Thursday's close at Rs.283.64.

The freak trade resulted in the Sensex soaring to an intra-day high of 19,619.65 points, up 5.37 percent or over a 1,000 points from its previous close at 18,618.2 points.

As many as twelve scrips, in the 30-scrip Sensex shot up 20 percent in the freak trade.

The stocks are: BHEL, DLF, HDFC Bank, ICICI Bank, Infosys, Larsen & Toubro, ONGC, Reliance Industries, SBI, Tata Steel, TCS and Wipro.

All these scrips, however, slipped later on and a majority were trading in the negative, in the last 40 minutes of trade.

The Sensex too was ruling in the red.