I hate it when my mom reminded me when I was a younger, but now that I’ve survived into middle-aged adulthood, I will give you the same medicine she gave me:

“I told you so.”

As I cautioned last month, “It’s important for investors to remember this pace of gains cannot be sustainable forever.” I added that there were a whole bunch of scenarios for stock prices to go down or “stock prices could simply go down due to profit-taking.”

And that is exactly what we saw. From the peak achieved in late January, stock prices quickly dropped by -12% at the low in early February, with little-to-no explanation other than a vague blame-game on rising interest rates – the 2018 yield on the 10-Year Treasury Note rose from 2.4% to 2.9%. This explanation holds little water if you take into account interest rates on the 10-Year increased from roughly 1.5% to 3.0% in 2013 (“Taper Tantrum”), yet stock prices still rose +20%. The good news, at least for now, is the stock correction has been contained or mitigated. A significant chunk of the latest double-digit loss has been recovered, resulting in stock prices declining by a more manageable -3.9% for the month. Despite the monthly loss, the subsequent rebound in late February has still left investors with a gain of 1.5% for 2018. Not too shabby, especially considering this modest return comes on the heels of a heroic +19.4% gain in 2017.

As you can see at from the 22-year stock market chart below for the S&P 500, the brief but painful drop was merely a scary blip in the long-term scheme of things.

Whenever the market drops significantly over a short period of time, as it did this month, conspiracy theories usually come out of the woodwork in an attempt to explain the unexplainable. When human behavior is involved, rationalizing a true root cause can be very challenging, to say the least. It is certainly possible that technical factors contributed to the pace and scale of the recent decline, as has been the case in the past. Currently no smoking gun or fat finger has been discovered, however some pundits are arguing the popular usage of leveraged ETFs (Exchange Traded Funds) has contributed to the accelerated downdraft last month. Leveraged ETFs are special, extra-volatile trading funds that will move at amplified degrees – you can think of them as speculative trading vehicles on steroids. The low-cost nature, diversification benefits, and ability for traders to speculate on market swings and sector movements have led to an explosion in ETF assets to an estimated $4.6 trillion.