Burlington Stores Inc (NYSE:BURL), International Tower Hill Mines Ltd (NYSEMKT:THM) and Blackhawk Network Holdings Inc (NASDAQ:HAWK) are today’s top midday gainers. On the losing end are SanDisk Corporation (NASDAQ:SNDK), BioFuel Energy Corp. (NASDAQ:BIOF) and QuickLogic Corporation (NASDAQ:QUIK).

SanDisk

Burlington Stores Climbs Midday

Burlington Stores Inc (NYSE:BURL) surged +8.36% today after announcing a debt refinancing transaction and expressing an improved outlook for its second fiscal quarter sales. In the investment portfolio of billionaire Richard Chilton and a part of the Tiger Global fund, the retailer has climbed +16.48% in the past three months.

The share price of International Tower Hill Mines Ltd (NYSEMKT:THM) jumped +7.97% by midday this Thursday. Billionaire John Paulson has held 8.9 million THM shares across several quarters, and despite the company’s +75.85% YTD increase, the billionaire has still posted a loss on this one.

Blackhawk Network Holdings Inc (NASDAQ:HAWK) takes the third and final spot on today’s list of midday gainers, its price rising +7.9%. This morning, HAWK announced second quarter results, beating guidance expectations as well as sell-side estimates. Billionaire investor David Einhorn initiated a position in the prepaid payment network during the first quarter of the year.

SanDisk Slides

Data storage solutions provider SanDisk Corporation (NASDAQ:SNDK) fell -12.67% today, rendering it the day’s top midday loser. The explanation? Second quarter results that failed to impress investors and a lowered third quarter forecast as well. Despite today’s dip, the Ray Dalio and George Soros pick has had a relatively strong year, price up +32.91% since the start of 2014.

BioFuel Energy Corp. (NASDAQ:BIOF) dipped -8.79%, correcting its price a bit following yesterday’s surge. The ethanol producer has had an outstanding year, its price up +321.64% YTD.

Last up on today’s list of midday losers is QuickLogic Corporation (NASDAQ:QUIK), down -7.62%.  Short interest in the stock seems to be on the rise as investors await its Q2 earnings report, set for July 30th. Among them is George Soros, who initiated a position in QUIK in Q1.