Wednesday, March 4, 2015

On Momentum Investing

Just another tool in the toolbox.
From the Wall Street Journal:

Voices: Norman Conley III, on Using Momentum Investing 
‘It’s not about getting the grand slams; it’s about avoiding the devastating strikeouts’
Norman Conley III is chief executive and chief investment officer of JAG Capital Management in St. Louis.
 
If you’re not a practitioner of momentum investing, you might fall prey to the common misconception that it’s a de facto term for risky or aggressive. That’s far from the case. In fact, as part of a diverse portfolio that is actively managed, momentum investing is no more risky than any other alpha factor, and can actually reduce overall risk.

In the simplest terms, momentum is a style of investing that focuses on purchasing securities that are appreciating in price relative to peers in the broader market, and then selling those securities when they start to fall in price relative to peers. The fundamental concept is that which goes up will continue to go up for a period of time, and that which goes down will continue to go down.

Over the past 20 years, momentum investing has gained academic backing on par with more widely recognized styles of investing, such as small cap and value investing. So why is it misperceived as inherently risky? The answer comes down to the way that it has sometimes been practiced—regrettably with more focus on the upswing than the downswing.

If you practice momentum investing, you should have a healthy respect for market activity, up or down. During the tech boom of the late ‘90s, many momentum investors did very well riding the upswing. Not as many successfully negotiated the volatility of those stocks on the way down. There were spectacular failures. That may have soured people on momentum investing, but the problem was less in philosophy than in practice.

I see momentum investing as a continual process of trying to uncover and admit to your inevitable mistakes as a money manager. In that sense, it’s not inherently risky, but inherently humble. Momentum forces you to continually reappraise your original purchase, and to focus not on what has happened, but what could happen. When a stock starts to decline relative to its peers, in momentum investing that’s a yellow flag. An active, disciplined, and prudent momentum investor will treat it as such.

Properly practiced, then, momentum will not get you into a beaten-down stock at the bottom, and it won’t get you out of a roaring name at the top. Instead, it helps you catch a lot of middles....MORE
See also:
It's Anomalous: "Fact, Fiction and Momentum Investing"
The Most Important Thing To Know About Commodities Is...
Whoa! Has The Small-Cap Premium Disappeared? That Would Leave Only Momentum in the Tried-and-True Anomaly File!
Anomalies: Can Momentum Be Arbitraged Away?
AQR's Cliff Asness: "Fact, Fiction and Momentum Investing"
Momentum As The Only Reliable Market Anomaly 
Market Anomalies: When Momentum Crashes
Market Anomalies: Can You Combine Value and Momentum?
What a Long Strange Trip: From CAPM To Fama-French to Four (or more) Factor
"Two centuries of trend following"
Improving on the Four-factor (beta, size, value, momentum) Asset Pricing Model
A Look At Trend Following Hedge Funds And the Algos That Love Them