The benchmark S&P 500 breached the 2,700-mark for the first time shortly after open on Wednesday, while the Nasdaq and the Dow hit records on a strong run in technology stocks.
Oracle and IBM rose about 3 percent following brokerage upgrades, helping the S&P technology index gain about 1 percent.
U.S. stocks kicked off 2018 on a strong note on Tuesday, with the S&P 500 and the Nasdaq closing at record levels.
"The sentiment is very much positive. We had a strong start and we are likely to see a follow through in the near-term," said Scott Brown, chief economist at Raymond James in St. Petersburg, Florida.
At 9:39 a.m. ET (1439 GMT), the Dow Jones Industrial Average was up 30.89 points, or 0.12 percent, at 24,854.9 and the S&P 500 was up 4.61 points, or 0.17 percent, at 2,700.42. The Nasdaq Composite was up 21.37 points, or 0.3 percent, at 7,028.27.
However, gains in the technology sector were limited by a 2 percent drop in Intel following a report that its processor chips had a fundamental design flaw.
Rival chipmaker Advanced Micro Devices was up about 5 percent. Other chipmakers Nvidia and Micron were also higher.
The Federal Open Market Committee is set to release minutes from its December meeting, when the central bank raised interest rates for the third time in 2017.
Investors will parse the minutes, due at 2:00 p.m. ET, for hints on rate tightening action in the coming months and the impact of the U.S. tax overhaul on the economy and inflation.
The odds of a March rate hike are at 56.3 percent level, according to the CME Group's Fedwatch tool.
"There's a lot more mystery surrounding the Fed. We see the Fed as being somewhat more hawkish in 2018, but this is the time when the risks of the policy are really starting to increase," Brown said.
In other stock moves, Scana Corp was up more than 23 percent after Dominion Energy said it would buy the utility in an all-stock deal $7.9 billion deal.
MoneyGram International fell about 10 percent after Alibaba-owned Ant Financial's plan to acquire the U.S. money transfer company in a $1.2 billion deal collapsed due to national security concerns.
Harley-Davidson slipped 3.5 percent after brokerage Longbow Research downgraded the company's stock to "underperform".
Advancing issues outnumbered decliners on the NYSE by 1,587 to 988. On the Nasdaq, 1,402 issues rose and 1,055 fell.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
)