Today’s top midday gainers are PBF Energy Inc (NYSE:PBF), Unwired Planet Inc (NASDAQ:UPIP) and American Railcar Industries, Inc. (NASDAQ:ARII). The losers are Twitter Inc (NYSE:TWTR), NCR Corporation (NYSE:NCR) and Express Scripts Holding Company (NASDAQ:ESRX).

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PBF Energy Results Spur Surge

After posting a triple gain in net income for the first quarter of this year, today’s biggest gain comes from PBF Energy Inc (NYSE:PBF), jumping +5.47%. The company cuts its YTD loss to -1.75% – great news for shareholder Seth Klarman.

Unwired Planet Inc (NASDAQ:UPIP) surged +5%. The intellectual property and technology licensing company is now up +59.78% YTD. George Soros currently holds UPIP stock.

Last is American Railcar Industries, Inc. (NASDAQ:ARII), up +4.85%. The Carl Icahn pick has had a solid 2014, with its stock up +49.40% YTD. Investors are now expecting results from today’s earnings call.

Twitter Disappoints

This Wednesday’s biggest midday loser, is Twitter Inc (NYSE:TWTR), down -10.51%. The social media giant posted EPS and revenues today, and the numbers did not impress investors. Tiger Global Management has a position in Twitter.

NCR Corporation (NYSE:NCR) is second, with a loss of -6% despite posting better-than-expected per-share earnings. NCR is in the books of David Einhorn, Ray Dalio and Richard Chilton.

Pharmacy benefits manager Express Scripts Holding Company (NASDAQ:ESRX) is last, its price dipping -5.66%. It reported today that the judicial issues it’s facing can’t yet be resolved, meaning there’s no full view of how it will be affected. Farallon Capital, Leon Cooperman and Ray Dalio have positions in ESRX.