NEW YORK (TheStreet) -- The S&P 500 and Dow Jones Industrial Average both closed at all-time highs.
On CNBC's "Fast Money" TV show, Guy Adami, managing director of stockmonster.com, said Twitter (TWTR) might have a small pullback but suggested investors definitely not short the stock.
Axiom Capital's Gordon Johnson added that TWTR is very overvalued compared to Facebook (FB). He said not to short TWTR now, but to look for an opportune time to do so.
Jim Lebenthal, CFO and CIO of Lebenthal & Company, said he wouldn't get long or short TWTR at current levels.
Jon Najarian, co-founder of optionmonster.com and trademonster.com, said there is a shortage of stock available for TWTR, helping to drive the price higher. He can't justify owning it at current levels.
Ben Kallo, senior research analyst at RW Baird, was a guest on the show. He said Chinese demand for Tesla Motors' (TSLA) Model S is not an issue but production and charging proponents are. He'd rather be in solar stocks such as SunPower (SPWR) and SolarCity (SCTY) in 2014.
Adami suggested investors who bought the dip in TSLA should take profits now. Johnson said he is a seller of Trina Solar (TSL).
Turning to mobile, Lebenthal said T-Mobile U.S. (TMUS) is unlikely to go much higher, even in an M&A situation, because it's gone up so much already this year. He added that at some point antitrust issues will become a concern within the rapidly consolidating industry.
Najarian said BlackBerry (BBRY) could continue to go lower. Adami concurred.
Toyota Motors (TM) continues to lag the Nikkei and S&P 500. Adami said the price action of TM is odd since it should not be lagging. He recommended buying it based on valuation.
David Kelly, chief global strategist at JPMorgan Funds, was a guest on the show. He said the U.S. stock market could appreciate 5% per year over the next five years. He had suggested it could appreciate 10% per year over the same period, but after 2013's huge run he has trimmed those estimates.
He likes European equities because of Europe's recovering economy and earnings potential. He likes Japan as an investment although it is risky.
GoGo (GOGO) was the first stock on the show's "Pops & Drops" segment. Adami said investors could get long, with a stop-loss at $25.
eBay (EBAY) fell 2% and Johnson said he's a seller of the stock at the beginning of 2014 but a buyer below $50 per share.
3D Systems (DDD) popped 7% and Najarian said it should go higher into year's end.
Bryan Gildenberg, chief knowledge officer at Kantar Retail, was a guest on the show. He said volume must have been very strong for United Parcel Service (UPS) to fail in its delivery promise to customers. He considered the heavy volume a good thing, and the stock rallied on Thursday in agreement. He added that Amazon (AMZN) continues to win over customers at the expense of traditional brick-and-mortar retailers.
Adami said the shippers should continue to outperform, including FedEx (FDX) and UPS. FedEx has a lower valuation than UPS, he added.
Najarian said shares of Lululemon Athletica (LULU) should eventually recover from their recent plunge. He said the new CEO should help steer the company in the right direction.
Johnson said he likes American Tower (AMT). He has a target of $95.
-- Written by Bret Kenwell in Petoskey, Mich.