North American stocks reversed earlier gains to head lower on Tuesday after comments by the new Federal Reserve Chairman Jerome Powell on the strength of the U.S. economy pushed bond yields higher.

During his first speech in front of lawmakers in Washington D.C,, Powell said that it was his personal view that the U.S. economy had strengthened since December and he saw inflation heading towards the central bank’s two per cent target.

“I think each of us is going to be taking the developments since the December meeting into account and writing down our new rate paths as we go into the March meeting and I wouldn’t want to pre-judge that,” said Powell during the question and answer period after his prepared speech.

Markets started pricing in the likelihood of a fourth interest rate hike this year shortly after his comments. 

Back in December, the Fed had said that it would raise the benchmark interest rate in the U.S. three times in 2018.

On Wall Street, the Dow Jones industrial average was down 0.3 per cent or 75 points to 25,634.44, while the broader S&P 500 index lost 0.6 per cent to 2,762.08.

The tech-heavy Nasdaq composite was lower by 0.7 per cent to 7,372.43 points.

Investors had been awaiting Powell’s comments for direction in the equity markets that had somewhat stabilized after volatility that started last month drove benchmark indexes into correction territory. 

Bond yields jump

The yield on the benchmark 10-year Treasury note rose to a session high of 2.914 per cent. The bond is considered to be the global driver of borrowing costs.

As interest rates rise, the value of existing bonds falls and borrowing to invest becomes more expensive.

Analysts at Capital Economics said the Fed is tightening policy “in earnest” and they think six rate hikes are likely by mid-2019.

“With the economy set to receive an additional fiscal boost following the recent deal in Congress to raise the discretionary spending caps, we are revising up our GDP growth forecasts for both this year and next,” the research firm said in a note.

Canadian reaction

In Toronto, the S&P/TSX composite index followed its American counterparts to lose 0.3 per cent to 15,674.23 points.

Some of the biggest drags on the index were the country’s biggest medical marijuana producers, whose shares have been declining from their peak in January.

Shares of Canopy Growth fell almost four per cent, while Aphria lost more than 5.5 per cent.

The Canadian dollar, meanwhile, was trading at 78.40 cents US, down from Monday’s average price of 78.83 cents US.

The greenback gained momentum against most major currencies after Powell was upbeat about the U.S. economy.