Pro: Here's How To Protect Your Investments If The Market Pulls Back 5%

Is the stock rally that has been going for years running out of momentum? This has been a topic of debate for just as long as the rally has been occurring, and there is no way to know for sure. But heading into the autumn months, the S&P 500 could experience a 5-percent pullback, David Bianco of Deutsche Asset Management explained during a recent CNBC "Trading Nation" segment. Nevertheless, there are some sectors where investors should exercise a good amount of caution, Bianco continued. Investors should consider avoiding bank stocks if there are more doubts surrounding the Federal Reserve's interest rate hike decision in December. Related Links: The 7 'Gremlins' That Could Haunt The Stock Market A Look At The Legacy Of Fed's Janet Yellen During What May Be Her Final Jackson Hole Meeting

If the S&P 500 index falls from its current level of 2,471.65 to around 2,300 there are ways for investors to protect their portfolio from the downside. The answer is actually quite simple: Stick with what has been working in your portfolio, such as technology and health care stocks, to weather out the storm. After all, a 5-percent dip wouldn't necessarily be severe enough for investors to change their investment strategies.

Once the stock market exits the historically "challenged" months of autumn the bull market can resume for "the next year or two — and quite possibl[y] three," he added.

Finally, exiting 2017, the S&P 500 index is expected to fully erase all of its losses it suffers in a potential 5 percent pullback and end the year at 2,450, which does represent a slight dip from current levels.