BRIEF-Tesoro announces expected closing date for Western Refining acquisition and election deadline
* Tesoro announces expected closing date for Western Refining acquisition and election deadline Source text for Eikon: Further company coverage:
* 'Quadruple witching' may boost volume, volatility
* Oracle slumps in premarket after results
* Carmax surges in premarket after earnings
* Futures up: Dow 25 pts, S&P 3.75 pts, Nasdaq 4.75 pts (Updates prices)
By Chuck Mikolajczak
NEW YORK, June 20 U.S. stock index futures pointed to a modestly higher open on Friday, putting the S&P on track to extend its record high with a sixth straight day of gains, and a fourth weekly gain over the past five.
* Investors may see a spike of volume and volatility at the open and towards the closing bell as Friday marks a "quadruple witching" day - the expiration of stock options, index options, index futures and single-stock futures - as traders close hedging positions or roll them over at the last minute.
* Oracle Corp shares were down 6.3 percent to $39.82 before the opening bell after it posted fourth-quarter results that disappointed investors looking for more progress against rivals selling web-based services.
* Five days of gains in the benchmark S&P index marked its longest winning streak since mid-April. For the week, the index is up 1.2 percent, while the Dow is up 0.9 percent and the Nasdaq has gained 1.1 percent.
* S&P 500 e-mini futures were up 3.75 points and fair value - a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract - indicated a modestly higher open. Dow Jones industrial average e-mini futures rose 25 points and Nasdaq 100 e-mini futures added 4.75 points.
* Darden Restaurants lost 4.1 percent to $48.51 in premarket trade after the chain restaurant operator reported a much-lower-than-expected quarterly profit as costs soared and sales at its flagship Olive Garden restaurant chain fell.
* Owens Corning slumped 6.8 percent to $38.50 in premarket after the company lowered its 2014 earnings forecast, citing weakness in its roofing business.
* Carmax surged 16.2 percent to $52.60 after the used-vehicle retailer reported first-quarter earnings that topped analysts' expectations.
* Midstream energy company Targa Resources Corp fell 9.8 percent to $135.89 before the opening bell after it said it was no longer in discussions with Energy Transfer Equity LP, the pipeline company controlled by billionaire Kelcy Warren, regarding a deal. Targa's energy logistics operating unit Targa Resource Partners lost 10.5 percent to $73.02.
* U.S.-listed shares of Shire jumped 16.5 percent to $223.31 in premarket trading after it rejected a 27 billion-pound ($46 billion) takeover offer from U.S. rival AbbVie, the latest attempt by a U.S. healthcare firm to tap into the London-listed group's low tax rate. (Editing by Bernadette Baum)
VANCOUVER, May 24 British Columbia's Liberal Party won the general election in the Western Canadian province earlier this month but lost its majority standing, according to final voting figures on Wednesday, which were in line with preliminary numbers.
May 25 The following are the top stories on the business pages of British newspapers. Reuters has not verified these stories and does not vouch for their accuracy.