Money is pouring into the cybersecurity sector after a rocky summer, Global Financial Private Capital's CIO told CNBC on Tuesday.
"The problem with these, of course, is that in a very volatile market you have one that offsets the other, and as a result sometimes it's hard to get traction out of them," Bertelsen said on "Tech Bet." "And once you've seen a bubble inflate, which we kind of had this summer, it usually doesn't re-inflate once it bursts a little."
Beyond ETFs, Bertelsen said he like two cybersecurity companies in particular — Cisco Systems and Check Point Software Technologies. Of the former, Bertelsen said shares seem cheap, and the company should benefit from a new CEO and restructuring.
"It may sound a little boring but Cisco is one of my favorites," he said. "They're not exactly cybersecurity, but everything goes through routers and servers. They're right in the forefront of it."
Bertelsen likes his second pick, Check Point Software Technologies, despite its 56-percent drop this year. The Israel-based company is at the "forefront of all cybersecurity," he said.
"Nobody has more pressure than Israel does on cyberwarfare," Bertelsen said.
Disclosure: Bertelsen's firm owns shares in the stocks he mentioned. Bertelsen does not own the stocks.