The Toronto Stock Exchange kicked off the week with a broad-based decline that saw the benchmark index erase nearly 150 points of last week’s 700-plus point gain.

The S&P/TSX composite index closed at 10,094.14, down 143.85 points, or 1.4%, as investors took profits following last week’s big gains.

Crude for June delivery ended down US$0.13, or 0.2%, to US$58.50 a barrel on the New York Mercantile Exchange, sending the energy group on the TSX lower by 3.1%.

Husky Energy Inc. dropped $1.40, or 4.2%. to $32.23 and Imperial Oil Ltd. fell 4.9% to $42.59.

Also lower was Petro-Canada, down $1.78, or 3.8%, to $44.97.

Units of Canadian Oil Sands Trust dropped $1.48, or 5%, to $28.42.

Financial stocks dipped 1.5% during Monday’s trading.

Shares of Sun Life Financial Inc. plummeted $1.56, or 5.3%, to $27.99 and Manulife Financial Corp. fell 2.4% to $23.24.

Also lower was CIBC, down $1.38, or 2.3%, to $59.81.

The materials group slid 0.7% as gold futures slipped lower. June gold fell US$1.40, or 0.2%, to US$913.50 an ounce on the Comex division of the New York Mercantile Exchange. The sub-gold index fell 0.3%.

Shares of First Quantum Minerals Ltd. tumbled $2.59, or 4.8%, to $51.90.

Agnico-Eagle Mines Ltd. shed 2% to $56.07 and Yamana Gold Inc. dipped 1.5% to $9.91.

Higher for the day was Goldcorp Inc., up 1.1% to $37.50.

The telecommunications group was the only main group on the TSX to advance on Monday, gaining 0.1%. The group was given a boost by a 2.1% increase for shares of Rogers Communications Inc., which closed at $30.58.

The junior S&P/TSX Venture index slipped 6.64 points, or 0.6%, to finish at 1,063.11.

The Canadian dollar dropped by more than a cent to finish the day at US85.78¢, after the Organization for Economic Co-operation and Development said Canada remains in the grips of a “strong slowdown” even as some major economies are showing tentative signs of recovery.

The main U.S. stock market indices also dropped lower on Monday as investors booked profits after last week’s rally.

The Dow Jones industrial average fell 155.88 points, or 1.8%, to 8,418.77.

The S&P 500 index shed 19.97 points, or 2.2%, to 909.26.

The Nasdaq composite index gave back 7.76 points, or 0.5%, to finish at 1,731.24.

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