Most actively traded companies on the TSX

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

Toronto Stock Exchange (13,400.31, down 77.23 points):

B2Gold Corp. (TSX:BTO). Miner. Up 15 cents, or 8.57 per cent, to $1.90 on 12 million shares.

Niko Resources Ltd. (TSX:NKO). Oil and gas. Down 14 cents, or 32.56 per cent, to 29 cents on 11.1 million shares.

Baytex Energy Corp. (TSX:BTE). Oil and gas. Down 10 cents, or 2.09 per cent, to $4.68 on 9.8 million shares.

Orbite Technologies Inc. (TSX:ORT). Miner. Down six cents, or 20 per cent, to 24 cents on 9.6 million shares.

First Quantum Minerals Ltd. (TSX:FM). Miner. Down 35 cents, or 4.38 per cent, to $7.65 on 9.6 million shares.

Yamana Gold Inc. (TSX:YRI). Miner. Down one cent, or 0.25 per cent, to $3.97 on 6.4 million shares.

Companies reporting major news:

Valeant Pharmaceuticals International Inc. (TSX:VRX). Drugs, health-care products. Down $46.44, or 50.71 per cent, to $45.14 on 4.1 million shares. Quebec-based Valeant lost more than $15 billion in market capitalization in a single day as its stock price plunged to its lowest level in more than four years after the company reported disappointing earnings, lowered its outlook for 2016 and raised fears of a default on its debt. At its peak last August, Valeant stock was worth nearly $350.