It certainly has been a positive day for the benchmark S&P/ASX 200 (Index: ^AXJO) (ASX: XJO). In afternoon trade the index is 0.6% higher at 6,021 points.
Four shares which have climbed more than most today are listed below. Here's why they have surged higher:
The Aristocrat Leisure Limited (ASX: ALL) share price has climbed 3% to $23.86. Today's gain is likely to be in relation to the week trading update by rival Ainsworth Game Technology Limited (ASX: AGI). Investors appear to believe Aristocrat could be stealing market share from its rival.
The Gentrack Group Ltd (ASX: GTK) share price is up almost 6% to $5.93 after the software company reported its full-year results. According to the release, Gentrack posted EBITDA of $23.9 million, up an impressive 43% year-on-year. Almost half of this growth was generated organically.
The Galaxy Resources Limited (ASX: GXY) share price is up 4.5% to $3.75 after it signed binding offtake agreements for a minimum of 200,000 tonnes per annum of lithium concentrate with multiple customers for a period of five years. This is all of Galaxy's planned production at its Mt Cattlin site.
The Zelda Therapeutics Ltd (ASX: ZLD) share price is up 13% to 13 cents after announcing that it has received full regulatory approval to commence a clinical trial of its medicinal cannabis formulations on chronic insomnia patients in Australia. Zelda could be one to watch in 2018.
