Thanks to strong gains in the materials and consumer discretionary sectors the S&P/ASX 200 (Index: ^AXJO) (ASX: XJO) is just about edging higher by around 0.1% to 5,416 points today.

Leading the charge are four shares in particular, each posting strong gains for their respective shareholders. Here they are:

a2 Milk Company Ltd (Australia) (ASX: A2M) shares have jumped 6% to $2, despite no news out of the growing dairy and infant formula company. As I stated here earlier, after a big post-earnings sell off it could be a great time to invest in A2 Milk. Considering its strong growth prospects I personally believe its shares look to be great value at just 24x estimated FY 2017 earnings.

BWX Ltd (ASX: BWX) is another share that dropped massively during earnings season. But it has bounced back strongly today with a 5% increase to $4.59. Despite the company behind the Sukin natural skincare brand posting a 25% rise in net profit after tax to $12 million, its shares took a sharp plunge last month. Even after today’s gains they are still down by around 16% since announcing these results, which I believe makes them a great candidate for an investment.

Estia Health Ltd (ASX: EHE) shares have rocketed higher once again, this time by around 11% to $3.25 despite no news out of the company. Incredibly this means that the embattled aged care operator’s shares are now trading at a higher price than they were before Monday’s brutal sell off. Despite this impressive rebound its shares are still down by 55% year to date.

OceanaGold Corporation (ASX: OGC) has easily been the pick of the gold miners today. Its share price is up by 10.5% to $4.94 thanks to both a rising gold price and a positive announcement relating to its Haile Gold Mine. The company advised that its recently completed preliminary economic assessment at the mine demonstrated the technical viability of an underground operation with strong economics. This is a very promising development for the miner and could boost annual production by between 80,000 to 100,000 ounces of gold per year.

If you missed out on gains today don't worry, there's still plenty of time to catch up. Especially if you do it the Warren Buffett way.

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Motley Fool contributor James Mickleboro has no position in any stocks mentioned. The Motley Fool Australia owns shares of A2 Milk. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Bruce Jackson.