What's next after year's best day for stocks: Pros

After the best day of the year for stocks, the CNBC "Fast Money" traders called out what stocks they thought would continue an upward trajectory.

"I'll take the rails," OptionMonster's Pete Najarian said Wednesday. "I'll take the rail car manufacturers and then next the airlines, in that order."

Najarian also cited heavy buying of puts on Delta as protection.

Traders on the floor of the New York Stock Exchange.
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Traders on the floor of the New York Stock Exchange.

The Dow Jones Industrial Average, the S&P 500 and the Nasdaq all posted their largest gains Wednesday since late 2013 after the Federal Open Market Committee released the minutes of its latest meeting.

Read MoreStocks recover losses, close up nearly 2 percent on Fed minutes

Brian Kelly of Brian Kelly Capital noted how much the FOMC remarks moved the stock market.

"The new part was that everybody was afraid that the Fed was going to pull the punchbowl away, even though all these other things were going on," he said. "Now, someday, we'll all wake up and the equity market will care about bad news around the world, but it's not today."

Kelly referenced a weak global economic outlook, shying away from the transports.

"To me, I'd rather be in a small-cap area," he said.

The Fed's remarks on the U.S. dollar was another point of interest, Kelly said.

"The fact that they mentioned the strong dollar, that is highly unusual for a Federal Reserve to talk about currency strength," he added. "I guess you got to stay long."

Private Advisor Group's Guy Adami noted that stocks traded up to 1,970 in S&P 500. "What was support becomes resistance," he said, adding that it was interesting that the IWM closed up almost 2 percent at 108.97.

Karen Finerman of Metropolitan Capital Advisors didn't have long to pick up many stocks from her "buy" list.

"We bought a little, but then things sort of got away from us," she said.

Finerman said that the CBOE Volatility Index, widely considered to be a measure of market uncertainty, was showing a curious move.

"Earlier in the day today, I felt that the selling was really starting to be panicky and sort of indiscriminate," she said. "When things start to trade in integers, then it sort of feels different, like it's not something fundamental."