Investors tend to discover 'hot' mutual fund managers just after a successful run and just before the inescapable force of mean reversion is about to kick in.

Secular cycles are the long periods - as long as decades - that come to define each market era. These cycles alternate between long-term bull and bear markets.

Investing is about making probabilistic decisions with limited information about an unknowable future. The variables are well known, as are the possible outcomes.

Whenever you hear a discussion about the short-term swings in any given stock's price, your immediate thought should be whether it matters to why you are investing.

Hedge fund managers charge so much more than mutual fund managers; alpha is even harder to come by. They end up selling a variety of things beyond mere outperformance.

Indeed, eventually, random outcomes all revert to the mean, meaning that streaks eventually end. Understanding this is a key part of intelligent and rational investing.

No one knows what the top-performing asset class will be next year. Lacking this prescience, your next-best solution is to own all of the classes and rebalance regularly.

It is in your DNA to love a good story. You know, neat tales with heroes and villains and conflicts to resolve. A good story pushes our buttons, is exciting and memorable.

The way we finance homes in this country is slow, filled with middlemen, who run a nonstandardized evaluation process. This makes financing a home cumbersome and difficult.

The market is going to love it. The market always seems to applaud major mergers, even though the vast majority of them don't work out and don't increase shareholder value.

People forget that although we can pinpoint the price, we can only guess at future earnings. The past isn't much help: It simply tells whether a market was pricey or cheap.

The simple reality of life is that everyone is wrong on a regular basis. By confronting these inevitable errors, you allow yourself to make corrections before it is too late.

Unlike cheap stocks, inexpensive asset classes have a lower chance of big drawdowns (broad asset classes don't go to zero) and a higher probability of average or better returns.

Whenever I see a forecast written out to two decimal places, I cannot help but wonder if there is a misunderstanding of the limitations of the data, and an illusion of precision.

You want less of the annoying nonsense that interferes with your portfolios and more of the significant data that allow you to become a less distracted, more purposeful investor.

Keynes vs Hayek? Friedman vs Krugman? Those are the wrong intellectual debates. Its you vs. Tony Hayward, BP CEO, You vs. Lloyd Blankfein, Goldman Sachs CEO. And you are losing...

TV producers want ratings and are willing to do nearly anything to get them. They gin up artificial conflicts and create an urgency for even the most minor of economic data points.

You have a natural tendency to want an emotionally satisfying tale - and to make investments based on that - despite times when the actual data may be telling you something different.

Much of the traditional thinking about cash is well intentioned but unrealistic. Should you have six months of living expenses in the bank for emergencies? Sure. Do you? Probably not.

Footage of people camped out at Best Buy or elsewhere is not remotely a celebration. Rather, it's a reminder of just how economically distressed a large percentage of our populace is.

Many hedge fund managers have become billionaires; perhaps this - plus their reputations as the smartest guys in the room - is why they have captured the investing public's imagination.

People who work in specialized fields seem to have their own language. Practitioners develop a shorthand to communicate among themselves. The jargon can almost sound like a foreign language.

Any time you speak to people about their posture, you learn about their most recent investment activity. When someone just bought stocks, they tend to be bullish; someone who just sold is bearish.

Yearly data put the rest of the noise into perspective. Most of the weekly or monthly random up-and-down movements get smoothed out. Ultimately, this is where long-term investors should be focused.

We must recognize our own behavioral errors. To be blunt, you are not likely to become a cognitive Zen master anytime soon. But a little enlightenment could keep you from making some common investing errors.

Based on a lifetime of observations and a few decades in the markets, I understand that societies, beliefs and fashions all move in long arcs of time. We call these arcs several things: cycles, periods, eras.

Despite all the media coverage, glitz and glam of hedge funds, they have not done well for their investors. They have high - some say excessively high - fees; their short- and long-term performance has been poor.

If you are not making any mistakes, you are being excessively risk-averse. Investing involves risk, and that means you will occasionally be wrong. And although it is okay to be wrong, it is not okay to stay wrong.

Outcome is simply the final score: Who won the game; what numbers came up in a roll of the dice; how high did a stock go. Outcome is the result, regardless of the method used to achieve it. It is not controllable.

Google's founders have had a good eye for imagining what technologies will be significant in the near future. No one asked Google to develop self-driving cars, but it helped them with street views for Google Maps.

'Excessive regulation in the banking reform bill will destroy a substantial part of our bond-distributing machinery. Can anyone expect that a step of this kind will improve the quality of our long-term investments?'

What you pay for an investment is the single biggest determinant for how successful that investment will be. When equity prices are high, your returns will be lower. When they are cheap, your returns will be higher.

Asset managers have different approaches, and I don't wish to suggest there is only one way to run money. There are many ways one can attempt to reduce risk, improve performance, lower drawdowns and reduce volatility.

I credit Google for having the foresight to identify threats to its main business of selling advertising against search results. The potential loss of market share in the mobile space led them to the Android acquisition.

Little white lies are told by humans all the time. Indeed, lying is often how we get through each day in a happy little bubble. We spend time and energy rationalizing our own behaviors, beliefs and decision-making processes.

As investors, we want to believe we are smart, insightful and uniquely talented - even though we often fail to do the heavy lifting, put in the long hours, and make the uncomfortable but necessary decisions to achieve success.

Shopmas now begins on Thanksgiving Day. Apparently, escaping the families you cannot stand to spend another minute with on Thanksgiving Day to go buy them gifts is how some Americans show their affection for one another. Weird.

Often, investors will discover a manager after he's had a terrific run, usually when he lands on a magazine cover somewhere. Invariably, funds swell up with new investor money just before they revert to their long-term averages.

I find it funny that people who didn't think there was any inflation in the pipeline are now talking about stagflation. This is nothing like the 1970's, which was a pretty dismal period and not just because of polyester and disco.

With Twitter, you can build your own virtual trading floor and research department, populated by the smartest people on earth. Almost any subject or sector has you can think of, you can find a few people with an expertise in that area.

Rather than engage in the sort of selective retention that so many investors tend to do and pretend mistakes never happened, I prefer to own them. This allows me to learn from them and, with any luck, avoid making the same errors again.

Rather than engage in the sort of selective retention that so many investors tend to do and pretend mistakes never happened, I prefer to 'own' them. This allows me to learn from them and, with any luck, avoid making the same errors again.

Most of the time, economic data is fairly benign. I don't wish to imply it is meaningless, but it is not a driver of stock markets. Indeed, the correlation between economic noise and how equity markets perform has been wildly overemphasized.

A hedge fund manager whose clients demand monthly performance reports has different needs than any individual investors with a 20-year time horizon. The needs of that long-term investor differ markedly from someone who is retiring in three years.

Commissions add up, taxes are a big drag, margin ain't cheap. A good accountant costs money as well. The math on this one is obvious, yet investors often fail to recognize it: Keep your costs low and your turnover lower, and you will win in the end.

You, your employer and your plan's investment managers fail to follow even the most basic rules of investing. You overtrade, chase performance, do not think long term. All of you - All Of You - have done a horrible job managing your retirement plans.

Here is a dirty little secret: Stock-picking is wildly overrated. Sure, it makes for great cocktail party chatter, and what is more fun than delving into a company's new products? But the truth is that individual stocks are riskier than broad indices.

Hedge funds are not especially liquid. Many are 'gated' - meaning there are only small windows when you can withdraw your money. They typically have a high minimum investment and often require investors keep their money in the fund for at least one year.

Amongst the financial Twitterati, the term 'muppets' has come to describe any client used and abused by some financial predator. I've adopted the term to describe portfolios that have been assembled for purposes other than serving the clients' best interests.

Owning a variety of asset classes means that some part of your portfolio will be doing well when the cyclical turmoil arises. A broadly diversified portfolio includes large capitalization stocks, small cap, emerging markets, fixed income, real estate and commodities.

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