Most actively traded companies on the TSX

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

Toronto Stock Exchange (13,245.75, down 64.05 points):

Twin Butte Energy Ltd. (TSX:TBE). Oil and gas. Unchanged at 9.5 cents on four million shares.

B2Gold Corp. (TSX:BTO). Miner. Down nine cents, or 6.04 per cent, to $1.40 on 3.9 million shares.

First Quantum Minerals Ltd. (TSX:FM). Miner. Down 29 cents, or 4.99 per cent, to $5.52 on 3.9 million shares.

Bombardier Inc. (TSX:BBD.B). Aerospace, rail equipment. Up two cents, or 1.53 per cent, to $1.33 on 3.8 million shares.

Encana Corp. (TSX:ECA). Oil and gas. Down five cents, or 0.72 per cent, to $6.93 on 3.5 million shares.

Perpetual Energy Inc. (TSX:PMT). Oil and gas. Down half-a-cent, or 8.33 per cent, to 5.5 cents on 3.1 million shares.

Companies reporting major news:

Canadian National Railway (TSX:CNR). Transportation. Down 51 cents, or 0.65 per cent, to $78.27 on 951,735 shares. The Canadian Transportation Agency says the country’s two main railways have exceeded their Western grain revenue entitlements for the 2014-2015 crop year and must repay those sums along with penalties. According to the transportation agency, Canadian National Railway’s grain revenue of $745,068,906 was $6,866,595 above its entitlement, while Canadian Pacific Railway (up 67 cents, or 0.38 per cent, to $177.55 on 357,945 shares) received $2,137,168 above its revenue entitlement of $724,045,774.