NEW YORK (TheStreet) -- The S&P 500 fell 0.17% while the iShares 20+ Year Treasury Bond ETF (TLT - Get Report) made new 52-week highs.

On CNBC's "Fast Money" TV show, Brian Kelly, founder of Brian Kelly Capital, suggested the final stages of a bull market tend to come six to 12 months after a hike in interest rates. He likes gold near current levels. 

Guy Adami, managing director of, said the TLT has more room left on the upside, arguing 10-year Treasury yields can decline to 2%. 

Steve Grasso, director of institutional sales at Stuart Frankel, said the S&P 500 remains on track to reach 2,100 by year's end. He added that a 10% pullback is looming but no one, including himself, knows when it will happen. It's long overdue, however, he argued. 

Dan Nathan, co-founder and editor of, said there has been a lot of volatility in bonds, much more than investors are used to seeing. He suggested that investors who have been long both stocks and bonds start to take some profits and wait for a larger pullback to buy again. 

Derek Manky, security strategist at Fortinet (FTNT - Get Report) , said it can take a long time for a full investigation into a cyber attack to be complete. His suggestion to companies that are attacked is to find the breaches as soon as possible. The longer it takes, the more money it will cost. There are, on average, 650,000 cyber attack attempts per minute globally, but many of those attacks are thwarted. Hackers are usually looking to sell the stolen information. 

Grasso said cyber attacks "can't be stopped" and will remain an issue. For that reason, he likes General Dynamics (GD - Get Report) . 

Adami said Palo Alto Networks (PANW - Get Report) seems likely to climb to $100 while Symantec (SYMC) also looks attractive on the long side. 

Nathan said Fortinet looks like a good buy if the company can re-accelerate its earnings growth. Wait for a pullback before getting long, he said. 

Nathan said investors who are long Splunk (SPLK - Get Report) can stay long with a stop-loss at $40. Those who are looking to get long should wait for a pullback. 

Grasso says Twitter (TWTR - Get Report) should continue experiencing strong revenue growth. The stock looks attractive based on its price action, he said. Nathan agreed and is long the stock, adding that the upside momentum seems likely to continue. 

Adami said that if U.S. Steel (X - Get Report) pulls back to $35 and finds support, the next move should be to "well above $40." 

Kelly said he is watching Cliffs Natural Resources (CLF - Get Report) on the long side but he is not a buyer yet. 

Brad Erickson, research analyst at Pacific Crest, has a buy rating rating and $316 price target on shares of Tesla Motors (TSLA - Get Report) . He said the company's extended warranty decision is good for consumers and may lure in buyers who are on the fence. However, he's concerned these warranties might affect gross margins. 

However, that news seems priced into the stock now, Erickson said. China and Japan should be large markets for Tesla to start developing while the Model X will be key to future growth. 

After suggesting buying shares of Tesla near $225, Adami said it's time to take some profits after the big move higher. Nathan warned that Tesla, which has announced a secondary offering each year since it has been public, may look to do another sometime this year. It's important to see how the stock reacts to that news, he said.

CNBC's Meg Tirrell said GlaxoSmithKline (GSK - Get Report) has received a government grant to begin trial tests of its Ebole treatment on humans. NewLink Genetics (NLNK - Get Report) will begin trials this fall but the stock is lower on this report because it will be behind GlaxoSmithKline. She added that treatment for Ebola is not a very large market for companies to address. 

Adami said he is not a buyer of Tekmira Pharmaceuticals (TKMR) near current levels but GlaxoSmithKline looks attractive. 

Abercrombie & Fitch (ANF - Get Report) fell 5% and was the first stock on the show's "Pops & Drops" segment. Kelly said investors should avoid the stock. 

T-Mobile U.S. (TMUS - Get Report) climbed 1%. Grasso, who is long, said the company is likely to be bought out by an industry peer. 

J.C. Penney (JCP - Get Report) dropped 3% following an analyst downgrade. Adami disagreed with the call, saying the stock has upside momentum and should continue moving higher. 

GoPro (GPRO - Get Report) popped 7%. Nathan said he would not buy near current levels. However, investors who like the company and are comfortable owning small, speculative positions can buy the stock on a pullback. 

Pavel Molchanov, an analyst at Raymond James, has an underperform rating on shares of GT Advanced Technologies (GTAT) . The stock is up 110% so far in 2014, which has been fueled by investors' anticipation the company's sapphire product will be in Apple's (AAPL - Get Report) iPhone 6 screen and any possible unknown wearable device. At 32 times next year's earnings, the stock seems "very, very frothy," especially if its products aren't in either of Apple's upcoming products. The stock could give up most of its recent 30% gain, he concluded. 

Kellly said he would be a buyer of GTAT at $15. Grasso likes the stock, arguing that its sapphire screen could be used in other products too, such as the iPad. 

Nathan pointed out a bearish options trade in shares of eBay (EBAY - Get Report) , specifically with the 12,000 put options that were bought for the September 12th weekly expiration. The trade looks like short-term protection, he added.

Nicole Regan, managing director and senior research analyst at Piper Jaffray, was a guest on the show. She has a buy rating and $102 price target on shares of McDonald's (MCD - Get Report) . She likes the company's strong balance sheet and attractive dividend. If the company improves its technology, order accuracy and speed of service, increased traffic should result.

Adami said shares of McDonald's have run into some headwinds. The bad news seems priced in, and he likes the stock on the long side. 

Grasso says the technological improvements that Domino's Pizza (DPZ - Get Report) has made, such as its highly touted mobile app, have helped improve sales tremendously. He likes shares of McDonald's after the recent decline.

Kelly is a buyer of the iPath DJ-UBS Grains Total Return Sub-Index ETN (JJG) , due to possible increased tensions between the European Union and Russia.


-- Written by Bret Kenwell in Petoskey, Mich.

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Bret Kenwell currently writes, blogs and also contributes to Robert Weinstein's Weekly Options Newsletter.