NEW YORK, RAW – US stocks tumbled on Tuesday as concerns about the cost of infrastructure spending and potential tax hikes to pay for President Joe Biden’s $US1.9 trillion ($A2.5 trillion) relief bill weighed on investors who also fear further downside in the market.

Remarks by Treasury Secretary Janet Yellen that the US economy remains in crisis from the pandemic as she defended developing plans for future tax increases to pay for the new public investments put investors on alert.

Yellen spoke at a hearing of the House Financial Services Committee after Federal Reserve Chair Jerome Powell addressed the committee.

Talk of the government’s infrastructure plans unnerved investors who are concerned the stock market is trading at elevated valuations, said Rick Meckler, partner at Cherry Lane Investments in New Vernon, New Jersey.

“There’s a little bit of concern of getting out ahead of a potential selloff that could be on the horizon,” Meckler said.

Stocks had been trading near break-even in choppy trade before turning sharply lower about 45 minutes before the close.

Powell told US lawmakers that a coming round of post-pandemic price hikes will not fuel a destructive breakout of persistent inflation – fears that had sparked a recent rise in yields.

Oil prices that slumped more than 3 per cent on worries that new pandemic curbs and slow vaccine rollouts in Europe will slow a recovery in demand also pushed the energy sector lower.

Falling yields on 10-year US Treasury notes from a 14-month highs last week have deflated this year’s outperformance in the financial and energy sectors.

Conversely, technology-related shares that had recently declined sharply on the rising rate environment have recuperated a bit as yields eased, said Peter Tuz, president of Chase Investment Counsel in Charlottesville, Virginia.

“A lot of these (tech) stocks have seen 10 per cent to 20 per cent corrections and interest rates have backed off a bit,” Tuz said.

“The money seems to be going back into them and out of the groups that did extremely well the last three months, specifically financials and energy.”

The benchmark S&P 500 and the blue-chip Dow have rallied about 80 per cent from their pandemic lows of a year ago, while the tech-heavy Nasdaq more than doubled in value.

The CBOE volatility index eased to its lowest level in 13 months before jumping about 11 per cent on the day. Wall Street’s so-called fear gauge still hovers near pandemic lows.

Unofficially, the Dow Jones Industrial Average fell 308.77 points, or 0.94 per cent, to 32,422.43, the S&P 500 lost 30.16 points, or 0.77 per cent, to 3,910.43 and the Nasdaq Composite dropped 149.85 points, or 1.12 per cent, to 13,227.70.

Shares of GameStop Corp dropped ahead of the company’s fourth-quarter results due after markets close. The videogame retailer announced the exit of its chief customer officer in the latest sign of a broader overhaul into an e-commerce firm.

ViacomCBS Inc tumbled after the media firm launched $US3 billion ($A3.9 billion) stock deals to raise capital for investments in streaming.

US-listed shares of Chinese internet search provider Baidu Inc slid following a flat Hong Kong debut as investors were wary of a fundraising flurry in the city and questioned the company’s growth plans.