It has been a volatile week in the markets. The averages have rocketed up and down by a percent or more as traders bet for and against a Fed move on interest rates next week. Does it matter?

If you aren't tired after more than two years of reading what the Fed may or may not do, you have the patience of Job. Whether an interest rate hike happens next week during the FOMC meeting or in December should not mean much to the market. But it does.

When fully 70 percent or more of daily trading activity is now in the hands (or keyboards) of high-frequency traders (HFT), short-term moves are where they make most of their money. During the summer months, they practically starved to death while the markets did little to nothing. Now HFT is making up for lost time.

Granted, in many ways, the stock market is priced for perfection, given that the markets are only 3 percent off historical highs. There are few investments outside of stocks that can give you a decent return nowadays. The fact that interest rates are so low has a lot to do with that. Any change, no matter how small, in interest rates is meaningful at the margin.

Sure, a 25 basis point hike in the Fed Funds rate may not seem like a lot (and it isn't when it comes to the economy). But it does tilt the financial apple cart. And if one apple falls, who's to say that won't cause a chain reaction?  If enough apples are impacted, could the entire apple cart tip over?

Many traders believe that is exactly what happened last December when the Fed initially hiked rates. The stock market had a temper tantrum in January and February that resulted, at its worst, in a 13 percent decline. Of course, the markets have come back since then and gone on to new highs.

If history is any guide, and the Fed does raise rates before the end of the year, we could see the same sort of sell-off. But like the declines in January and February, they would not be a reason to sell. If anything, I would be a buyer of such a move. But I'm getting ahead of myself.

September and October are notoriously volatile months in the stock market. So far that historical trend is solidly intact. Since the Federal Open Market Committee meeting is on the 21st of September, which is next Wednesday, we should see this volatility continue until at least that date. I suspect, however, that regardless of what the Fed decides, the markets will continue to stay volatile.

Whether true or false, investors have it in their head that the Fed will raise rates, if not now, then in December.  And since markets usually discount news six to nine months out, I believe there is more downside ahead as markets adjust to an expected rate hike. Readers may recall that I have been looking for a pull-back in the single digit range and it appears that we are in that process now. Buy that does not necessarily mean a straight down market; we could even see a return to the old highs at some point before falling back.

It might be a drawn-out process that occurs between now and the election with plenty of peaks and valleys. Remember that Wall Street believes Hillary Clinton will win the election. Until recently, the polls gave her a substantial margin, confirming those expectations. As Donald Trump narrows that lead, these same investors will start to get nervous. Nervous leads to caution, caution leads to selling. There is no telling how close the election will become but the closer it is the more potential downside is in the offing.

Bill Schmick is registered as an investment adviser representative with Berkshire Money Management. Bill’s forecasts and opinions are purely his own. None of the information presented here should be construed as an endorsement of BMM or a solicitation to become a client of BMM. Direct inquires to Bill at 1-888-232-6072 (toll free) or email him at Bill@afewdollarsmore.com.