The S&P 500 gained 1.72 points or 0.07 per cent to 2,559.36, Xinhua reported.
The Dow closed above 22,000 for the first time on August 2.
The Dow may in the near term have a hard time sustaining a move above 23,000, said Robert Pavlik, chief market strategist at Boston Private Wealth in NY.
Solid earnings, stronger economic growth and hopes that Trump may be able to make progress on promised tax cuts have helped the market rally this year.
Also boosting some health insurers and U.S. hospital operators was news of a bipartisan deal in the U.S. Senate to stabilize Obamacare. The report, due at 2:00 p.m. ET (1800 GMT), will likely show if inflation pressures are accelerating.
Of course, the strength of Wednesday's rally may suggest that the Dow industrials may have further to room to run, but an inability to close the deal Tuesday may suggest that the upward momentum that has taken investors to repeated all-time highs may be waning-at least somewhat.
The Dow was last up 0.1 percent at 22,974.15.
Abbott rose 1.63 percent after the company's profit beat estimates, driven by strong sales in its medical devices business. Shares of the American health care company soared 5.58 percent.
Winners and Losers: Freeport-McMoRan sunk 2.23 percent after Deutsche Bank downgraded the mining company's stock to "Sell".
Advancing issues outnumbered decliners on the NYSE by 1,434 to 1,358.
Here at home, the TSX has seen much more conservative growth having risen around 1,000 points in the 12 months.