There's a big debate going on in financial markets over whether the Federal Reserve will hike interest rates three times in 2018 or four times. 

The central bank has only hiked interest once so far this year, in March.

Kristina Hooper, chief global market strategist for Invesco, doesn't see much impact on the stock market if the Fed hikes rates four times instead of three times this year.

Collin Martin, fixed income strategist at Charles Schwab, expects three rate hikes this year, but is keeping an eye on the upcoming economic data to gauge whether the Fed may act a fourth time. 

"If it were to be four, that would likely mean a sharper rise in most Treasury yields which would mean a further decline in prices," Martin said.

Both were panelists on TheStreet's June Trading Strategies roundtable.

To watch the entire Trading Strategies roundtable click here.