Apple Inc shares were volatile after the company unveiled new iPads, the iPad Air and iPad Mini with retina display. Apple shares went up for a brief time as the iPad Air was being launched but it slipped 0.3 per cent to close at $519.87 as of Oct. 22.

Apple has unleashed a thinner and lighter version of its best-selling iPad, the iPad Air, available in Australia on Nov 1. The tech giant also released the iPad Mini with sharper retina display.

Apple Inc's shares have dropped 25.9 per cent from its highest at $702.10 on Sept 19, 2012. The highest Apple stock price came a year after Tim Cook succeeded Apple Inc co-founder Steve Jobs as CEO.

With Mr Cook as Apple CEO, the company has worked hard to develop and release a new line of products to expand Apple's market share and growth with new iPods, iPhones and iPads. The company has been rumoured to be working on wearable tech like the iWatch and Apple TV.

According to reports, Apple's biggest stock surge came after the launch of the first iPhone in 2007. The stock price jumped 13.49 per cent within the same day of the announcement. The release of the latest iPhones, the iPhone 5C and the iPhone 5S failed to impress investors with Apple stocks dipping 7.6 per cent.

Meanwhile, Nokia's share price rose 3 per cent at $7.35 after the company launched its first tablet, the Nokia Lumia 2520.

Nokia's first tablet, unveiled also on the same day Apple released the iPad Air on Oct 22, has a 10.1-inch full HD display. Lumia phone owners will find the tablet familiar with a power keyboard reminiscent of the Microsoft Surface Touch Cover.

Microsoft had purchased Nokia's devices and services division. The company plans to push the growth of Nokia Lumia's market share and profits with unified marketing and branding.

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