Rule No. 23: Beware of Wall Street Hype

Editor's note: Jim Cramer's new book, Real Money: Sane Investing in an Insane World, is available in selected bookstores now. As a special bonus to RealMoney readers, we will be running Cramer's "Twenty-Five Rules of Investing." For more about the new book and to order it, click here. Today, we present Cramer's twenty-third rule of investing. Read more about his rules:

1. Pigs Get Slaughtered
2. It's OK to Pay the Taxes
3. Don't Buy All at Once
4. Buy Damaged Stocks
5. Diversify to Control Risk
6. Do Your Homework
7. Don't Panic
8. Buy Best-of-Breed
9. Defend Some Stocks
10. Don't Bet on Bad Stocks
11. Don't Own Too Many Names
12. Cash Is for Winners
13. No Woulda, Shoulda, Couldas
14. Expect Corrections
15. Watch Bonds
16. Don't Subsidize Losers
17. Check Hope at the Door
18. Be Flexible
19. Quit When Execs Do
20. Patience Is a Virtue
21. Be a TV Critic
22. When to Wait 30 Days

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Amateurs and professionals alike simply don't have enough respect for the Wall Street promotion machine.

They don't realize that balls can stay in the air much longer than they should. They don't understand that analysts and firms get behind stocks -- sometimes irrationally, sometimes greedily -- and they can keep the stocks propelled in an up direction well beyond reason.

That's why I say,

Never underestimate the Wall Street promotion machine.

Consider American International Group(AIG - Cramer's Take - Stockpickr) and Fannie Mae(FNM - Cramer's Take - Stockpickr). Here are two companies with extensive banking opportunities dangling from one side and good track records hanging from the other. These have been two lovey blankets for the sell side for so long that they won't give them up. Both stocks stayed up far too long, even in the post-Spitzer era, because the analysts viewed it as their job to keep the stocks up.

Now, I don't mind admitting that things are better now than they used to be. I own Cabela's(CAB - Cramer's Take - Stockpickr), and the analysts who brought it public have bent over backward not to recommend the stock, to the point that I miss the promotion machine.

Analysts now have some degree of conscience and are able to separate themselves from being flunkies for banking. But that doesn't mean they won't fall in love with some stocks and do everything they can to praise them long after they shouldn't. It tends to happen particularly to winners, stocks like the online education companies or the biotechs or some of the doggier software companies. The hope never ends. The hype never ends. Not until the cracks are so obvious that it is too late to get out.

In particular, when you short a stock remember that an analyst will twist any data point into a positive to get a stock juiced. Again, that's his job. Don't think badly of him; just be ready to reload when he does it.

	1.	Pigs Get Slaughtered		2.	It's OK to Pay the Taxes
	3.	Don't Buy All at Once		4.	Buy Damaged Stocks
	5.	Diversify to Control Risk		6.	Do Your Homework
	7.	Don't Panic		8.	Buy Best-of-Breed
	9.	Defend Some Stocks		10.	Don't Bet on Bad Stocks
	11.	Own Fewer Names		12.	Cash Is for Winners
	13.	No Regrets		14.	Expect Corrections
	15.	Know Bonds		16.	Don't Subsidize Losers
	17.	No Room for Hope		18.	Be Flexible
	19.	Quit When Execs Do		20.	Patience Is a Virtue
	21.	Be a TV Critic		22.	When to Wait 30 Days
	23.	Beware the Hype
Check back for more of Cramer's Rules