Most actively traded companies on the TSX

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

Toronto Stock Exchange (13,477.54, down 44.46 points):

Niko Resources Ltd. (TSX:NKO). Oil and gas. Up 15 cents, or 53.57 per cent, to 43 cents on 15.2 million shares.

Data Group Ltd. (TSX:DGI). Business services. Unchanged at 2.5 cents on 14 million shares.

OceanaGold Corp. (TSX:OGC). Miner. Down 36 cents, or 9.45 per cent, to $3.45 on 11 million shares.

First Quantum Minerals Ltd. (TSX:FM). Miner. Up 63 cents, or 8.55 per cent, to $8 on 8.8 million shares.

GeneNews Ltd. (TSX:GEN). Health-care. Down 1.5 cents, or 11.54 per cent, to 11.5 cents on 7.7 million shares.

Pengrowth Energy Corp. (TSX:PGF). Oil and gas. Down 10 cents, or 7.63 per cent, to $1.21 on 7.2 million shares.

Companies reporting major news:

Valeant Pharmaceuticals International Inc. (TSX:VRX). Pharmaceutical. Down 54 cents, or 0.59 per cent, to $91.58 on 866,656 shares. The embattled drug company will discuss its preliminary fourth-quarter results and update its forecast for 2016 on Tuesday. Valeant delayed its results after CEO Michael Pearson was hospitalized for severe pneumonia and again when he returned to work two weeks ago.