Last lap: With the clock ticking down one of our competitors will soon be spraying the champagne, just like Formula One driver Daniel Ricciardo.

Last lap: With the clock ticking down one of our competitors will soon be spraying the champagne, just like Formula One driver Daniel Ricciardo. Photo: Getty Images

With secret technology that improves the quality of digital speakers, Audio Pixels is breaking the sound barrier for our dartboard.

The top stock of our shares race, its Israeli subsidiary is apparently on the threshold of producing commercially viable "micro-electromechanical structures" to generate better sound.

Somebody must love the idea or perhaps knows something we don't, because the stock has soared 122 per cent since the dartboard picked it three weeks ago.

About one-quarter of that came after it announced its half year results last week, of a fivefold increase in its losses to $2.8 million.

Saying that its  testing for mass production has "unveiled a particular phenomenon that is unique to our structures" seems to have done the trick, but until it's patented mum's the word. Here's a hint: the technology is only one millimetre thick.

No other stock comes near it, although our resident chartist Richard Pritchard has the second and third best picks.

Everybody is ahead of the market, except the astrologer whose orb has gone awry.

Second best stock Triton Minerals soared last week after a share placement 23 cents above its share price, to lift its stake to 80 per cent in several graphite projects in Mozambique.

On the economic front an ABS survey of business spending plans failed to resolve whether the increase in non-mining investment will be bigger than mining's fall.

The profit reporting season here is over but just starting in the US. So the home race  stretch will be Wall Street driven and for the big miners, the fall in the iron ore price.

Growing confidence in the US economy, to the point where economists are talking about an earlier rate rise, is fuelling Wall Street and the US dollar at the expense of the gold price.