Mastercard credit cards.
Benoit Tessier | Reuters
CNBC's "Halftime Report" traders answered questions from CNBC Pro subscribers amid Thursday's sell-off.
The traders discussed whether to hold onto Mastercard during its period of stagnation and if Nvidia's stock has topped and whether pharmaceutical plays like Pfizer are over.
Josh Brown, co-founder and CEO of Ritholtz Wealth Management, recommended long-term investors hold onto Mastercard.
"The stock is up 350% in the last five year," said Brown. "Yes, its had a couple of months where it hasn't really gone anywhere, but that's not at all out of character for any of these large-cap technology slash finance companies. They move in spurts."
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