Stocks remained higher on Wednesday after the White House unveiled a highly anticipated tax plan that didn't include any surprises, though failed to offer much concrete detail.

The S&P 500 was up 0.3%, the Dow Jones Industrial Average added 0.2%, and the Nasdaq climbed 0.2%. The S&P 500 and Dow were on track for their first three-day stretch of gains of April. 

Donald Trump's tax plan includes a reduction in the corporate tax rate to 15% from 35% and a top individual tax rate of 35% as widely expected. The plan reduces the number of individual tax brackets to three from seven. The plan also backs the repeal of the alternative minimum tax and the death tax. Trump called upon the simplification of the tax code on the campaign trail and over the past three months in office. 

Earlier, Treasury Secretary Steven Mnuchin on Wednesday said Trump's tax cuts would be "the biggest tax cut and the largest tax reform in the history of our country," though chief economic advisor, Gary Cohn, called the cuts just "one of" the biggest in comments to the White House press on Wednesday afternoon.

"There is still a lot unknown about the tax plan," said Matthew Peterson, chief wealth strategist at LPL Financial. "For example, we know the tax brackets, but not what income levels would trigger the rates. Cash held overseas being repatriated would be at a lower, but still unknown, level."

Peterson added, "The plan, as released, doesn't really solve the uncertainty around the corporate taxes... To the market, this is a snooze, and we seeing a model decline after the announcement, simply because neither the President's nor Secretary Mnuchin's comments really advance the ball much. The market was looking for clarity. It wasn't going to get it. But it didn't even get the roadmap."

A reduced corporate tax rate would greatly lower federal revenue. One analysis from the conservative-leaning Tax Foundation during the campaign estimated that a reduction in the corporate tax rate would cut federal revenue by $2 trillion over 10 years. 

Trump's proposed tax plan would still need to be translated into actual legislation that could pass Congress, a process that could take months. Such a sharp decline in the corporate tax rate could be a sticking point for Congress. 

Stock markets have rallied to new heights since the presidential election in November on Trump's tax plans, betting that an overhaul of the tax code would be beneficial to companies' financial health and eventually act as economic stimulus. However, faith in the Trump administration's ability to enact campaign promises faltered earlier this year after the president's promise to repeal and replace Obamacare failed before heading to Congress for a vote. 

A second effort to repeal and replace Obamacare grew more likely to succeed on Wednesday after the House Freedom Caucus backed the latest version from the White House. The group has officially endorsed the revised plan, which has yet to be made public. The Freedom Caucus said in a statement that while the version does not fully repeal the Affordable Care Act, members were "prepared to support it to keep our promise to the American people to lower healthcare costs."

Another big rally on Wall Street on Tuesday made for a day of milestones: the Dow and S&P 500 enjoyed their best back-to-back gains of the year, while the Nasdaq scored a new record and topped its never-before-seen 6,000 milestone. The Dow owed much of its gains to better-than-expected earnings from industry leaders including Caterpillar (CAT) - Get Caterpillar Inc. Report, McDonald's (MCD) - Get McDonald's Corporation (MCD) Report and DuPont (DD) - Get DuPont de Nemours, Inc. Report .

The Nasdaq topped the psychologically milestone of 6,000 for the first time Tuesday, reaping the rewards of a broader market rally that pushed the tech-heavy index up 11% since the beginning of the year and nearly 22% over the past 12 months. Tech industry leaders including Apple (AAPL) - Get Apple Inc. (AAPL) Report , Amazon (AMZN) - Get, Inc. Report and Facebook (FB) - Get Facebook, Inc. Class A Report have contributed to recent gains. The Nasdaq first hit 5,000 in March 2000, the tail-end of the dotcom bubble. It took less than a year for the Nasdaq to move from 4,000 to 5,000.

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Twitter (TWTR) - Get Twitter, Inc. Report surged after narrowing its quarterly loss and beating adjusted earnings estimates. A net loss of 9 cents a share was slightly less than 12 cents a share in the year-ago quarter. Adjusted earnings of 11 cents a share were more than 5 times consensus. Revenue fell 8% to $548 billion, but exceeded estimates of $517 million. Average monthly active users increased 6% from the fourth quarter to 328 million.

Chipotle (CMG) - Get Chipotle Mexican Grill, Inc. Report rose as improving traffic trends benefited its top- and bottom-line. The burrito chain swung to a profit of $1.60 a share from losses of 88 cents a share in the year-ago quarter. Analysts anticipated earnings of $1.29 a share. Revenue surged 28% to $1.07 billion, exceeding estimates of $1.05 billion. Comparable sales increased 17.8%, above estimates of 15.5%. Chipotle has slowly tempted customers back after a food-safety scandal in late 2015.

The company said it recently detected unauthorized activity on its network that supports its payment system in restaurants, but believes it has stopped the activity. Customer accounts that were used online from March 24 through April 18 were compromised. The comapny declined to comment further pending the investigation.

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PepsiCo (PEP) - Get PepsiCo, Inc. Report bested analysts' earnings and sales estimates as higher pricing offset weaker volumes in North America. Earnings of 94 cents a share came in 2 cents higher than estimates, while revenue of $12.05 billion exceeded a target of $11.98 billion. CEO Indra Nooyi said the quarter had been positive "despite challenging food and beverage industry trading conditions in North America and continued volatility in a number of developing and emerging markets." Beverage volume in North America fell 1%.

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Dow component Boeing (BA) - Get Boeing Company Report reported a mixed quarter with earnings above estimates, but revenue below. Adjusted earnings of $2.01 a share came in a dime above expectations. Revenue slid nearly $2 billion to $20.9 billion and fell short of estimates of $21.3 billion. CEO Dennis Muilenburg said the company remained on track to "achieve our full-year revenue, earnings and cash flow targets as our teams deliver on our large and diverse order backlog."

Arconic (ARNC) - Get Arconic, Inc. Report rose on Wednesday after topping quarterly estimates and reporting an increase in revenue. The metal-alloy manufacturer earned 33 cents a share over its first quarter, 9 cents higher than estimates. Sales increased nearly 5% to $3.2 billion, above consensus of $200 million. 

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U.S. Steel (X) - Get United States Steel Corporation Report knocked off a quarter of its value on Wednesday after reporting a surprise loss over its recent quarter. The steelmaker reported an adjusted loss of 83 cents a share, a massive gap from consensus of 35 cents a share in earnings. Revenue of $2.73 billion also missed estimates of $2.95 billion. CEO Mario Longhi said operating challenges at its flat-rolled facilities "prevented us from benefiting fully from improved market conditions."

Panera Bread (PNRA) reported in-line earnings and sales slightly above estimates over its first quarter. The fast-casual bakery earned $1.83 billion on $727.6 million in sales. Analysts anticipated $1.83 a share on $717.6 million in sales. Comparable bakery-cafe sales rose 5.3% at company-operated stores, while total comparable sales increased 2.6%. 

Texas Instruments (TXN) - Get Texas Instruments Incorporated Report also exceeded quarterly estimates. First-quarter net income of 89 cents a share came in 6 cents above forecasts. Revenue increased 13% to $3.4 billion, $100 million above estimates. 

Wynn Resorts (WYNN) - Get Wynn Resorts, Limited (WYNN) Report beat analysts' estimates on its top- and bottom-line over its first quarter as gaming revenue in gambling destination Las Vegas continued to improve. Earnings of $1.24 a share topped estimates by 27 cents. Revenue of $1.48 billion came in $100 million above consensus. 

Northrop Grumman (NOC) - Get Northrop Grumman Corporation Reportposted better-than-expected first quarter earnings. Adjusted earnings for the period came in at $3.13 per share on revenue of $6.27 billion. Analysts surveyed by FactSet had forecast earnings of $2.93 per share on revenue of $6.15 billion. The company also hiked its full year guidance.

Anthem (ANTM) - Get Anthem, Inc. Report climbed after earnings and sales beat quarterly estimates on premium increases and higher Medicaid membership. Medicaid membership increased 8.4%. Revenue climbed 11% to $22.53 billion, above consensus of $21.27 billion. Adjusted earnings of $4.68 a share soared past estimates of $3.86. 

So far this earnings season, more than one-third of S&P 500 companies have reported on their recent quarterly performance. Of those that have reported, nearly 77% have exceeded first-quarter earnings estimates, above the historical average of 64%. Companies have had generally weaker performances on the top-line with 63% topping consensus, beating out the historical average of 59% by a narrower margin. Thomson Reuters anticipates 11.8% earnings growth and 6.9% revenue growth. 

Crude oil prices turned higher on Wednesday after a sharper decline in weekly domestic inventories than anticipated. U.S. crude stockpiles fell by 3.6 million barrels in the past week, according to the Energy Information Administration. Analysts anticipated a drop of 1.7 million barrels. Gasoline and distillates stocks each showed an unexpected increase. 

West Texas Intermediate crude was up 0.1% to $49.62 a barrel on Wednesday. 

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