Some of the most active companies traded Wednesday on the Toronto Stock Exchange and the TSX Venture Exchange:

Toronto Stock Exchange (11,905.44 up 51.83points):

Great Basin Gold Ltd. (TSX:GBG). Miner. Down 18.5 cents, or 43.02 per cent, at 24.5 cents on 14,199.198 shares. The stock closed to a low not seen since 1998 after disclosing a "liquidity challenge" due to operational problems which resulted in an unexpected revenue shortfall. Great Basin said that its board is looking at strategic alternatives under a new leadership.

DeeThree Exploration Ltd. (TSX:DTX). Oil and gas. Down seven cents, or 1.46 per cent, at $4.72 on 11,650,882 shares. The Calgary-based company`s stock dipped after a huge jump Tuesday when it reported revenues in the second-quarter nearly doubled to $18.4 million from $9.5 million. It also booked a profit of $5.6 million, reversing a year-earlier loss of $899,000.

Eldorado Gold Corp. (TSX:ELD). Miner. Up 12 cents, or 1.08 per cent, at $11.24 on 7,991,696 shares. The gold sector was one of the advancers on the main index, up 0.63 per cent, as the price of bullion increased US$4.20 to $1,606.60 an ounce on the New York Mercantile Exchange.

Uranium One Inc. (TSX:UUU). Miner. Up 15 cents, or 6.55 per cent, at $2.44 on 6,256,265 shares. The Toronto-based miner posted solid second-quarter profits earlier in the week despite lower revenue.

Royal Bank of Canada (TSX:RY). Bank. Up 74 cents, or 1.42 per cent, at $52.72 on 4,927,788 shares. The financial sector was one of the gainers on the TSX, up 0.63 per cent.

Cameco Corp. (TSX:CCO). Miner. Up 53 cents, or 2.60 per cent, at $20.91 on 4,870,009 shares.

TSX Venture Exchange (1,206.62 up 9.61 points):

LNG Energy Ltd. (TSXV:LNG). Oil and gas. Up a penny, or 40 per cent, at 3.5 cent son 19,361,833 shares.

Zodiac Exploration Inc. (TSXV:ZEX). Oil and gas services. Up half a cent, or 16.67 per cent, at 3.5 cents on 10,761,271 shares.

Companies reporting major news:

Lululemon Athletica (TSX:LLL). Athletic wear retailer. Up $1.89, or 3.32 per cent, at $58.86 on 97,676 shares. The yoga wear maker filed a lawsuit in the U.S. accusing PVH Corp.'s Calvin Klein and G-III Apparel Group Ltd., a manufacturer and supplier for the brand, of infringing on three different patents covering a specific overlapping style of waistband.

Sears Canada Inc. (TSX:SCC). Department store chain. Unchanged at $10.35 on 95,114 shares. Its second-quarter loss widened to $9.8 million or 10 cents per share from a loss of $200,000 or a penny a share in the same 2011 period, as overall sales at its department store chain declined. The company, which is 92 per cent owned by U.S. retail giant Sears Holdings Corp., booked revenues of $1.05 billion, a slight dip from year-ago`s $1.15 billion.