Most actively traded companies on the TSX

Some of the most active companies traded Thursday on the Toronto Stock Exchange:

Toronto Stock Exchange (13,266.44, down 81.02 points):

Telesta Therapeutics Inc. (TSX:TST). Health-care. Up 2.5 cents, or 27.78 per cent, to 11.5 cents on 13.9 million shares.

Lake Shore Gold Corp. (TSX:LSG). Miner. Up 16 cents, or 8.33 per cent, to $2.08 on 12.3 million shares.

First Quantum Minerals Ltd. (TSX:FM). Miner. Down 88 cents, or 13.71 per cent, to $5.54 on 10.1 million shares.

Data Group Ltd. (TSX:DGI). Business services. Unchanged at two cents on 10.1 million shares.

Kinross Gold Corp. (TSX:K). Miner. Up 31 cents, or 6.64 per cent, to $4.98 on 9.6 million shares.

Lithium Americas Corp. (TSX:LAC). Miner. Up 10 cents, or 17.24 per cent, to 68 cents on 8.5 million shares.

Companies reporting major news:

Valeant Pharmaceuticals International Inc. (TSX:VRX). Drugs, health-care products. Up $1.93, or 4.31 per cent, to $46.70 on 2.6 million shares. Valeant says its lenders have agreed to give the company more time to file its 2015 audited annual report with U.S. regulators. Failure to get approval for the deadline extension would have put Valeant in default of lending agreements affecting billions of dollars borrowed by the company to fund acquisitions.