I have come across a number of articles that discuss the plusses of a "value based investing" approach in stocks…… presumably as compared to the momentum approach.
My question is: are there any fundamental reasons why a growing, profitable business today should have a high stock price at any point in future (assuming that today the price is not high enough). To me, this thinking sounds similar to the naive belief one has that if you did well in school/college you will be rewarded in life… more wealth, wine, …

Also, how does one monitor the performance of this approach regularly?

What does SHORTING of STOCK means in intraday trading?

Do i have to hold stock before i short them. Please give me some good tips on intraday trading , how to know which stock is having a good momentum and good for dya trading.

Do Momentum/Swing Traders, Trades effect your Investments?

Does it effect your Long Term Investments?………Do Day Traders?

why do many investor's trade more on momentum than fundamentals.of a stock ?

Momentum Issue: Your Expertise Would Be Appreciated?

In Column A is the number of stocks advancing minus the number of stocks declining on the New York Stock Exchange over the last 6 days ("value"). In Column B is the percent change from day to day. In Column C is the percent change removing the negative signs. I am creating an algorithm, part of which includes measuring the relative momentum from day to day of advancing less declining stocks. Currently, I ask three questions. First, was the value of advancing stocks minus declining stocks > or < than zero TODAY. If the answer is >, I assign it a number "1", if the answer is <, I assign it a number "2." Second, I ask if the value TODAY was > than yesterday. If yes, I assign a "1" and if no I assign a "2". I then remove the negative signs from the percentages and if the percentage is greater, I assign a "1" and if not a "2."

Is this the most efficacious way to measure momentum in this situation. Due to space problems, I’m putting the table in Additional details section.
A/B/C

7/28: 2020/541.05%/541.05%
7/27: -458/-270.92%/270.92%
7/26: 325/-72.39%/72.39%
7/25: 1177/-44.09%/44.09%
7/24: 2105/299.53%/299.53%
7/21: -1055

Momentum Issue?

In the Table below, Column A represents the difference between the number of stocks advancing and the number of stocks declining on the New York Stock Exchange for each of the last 8 days. The most recent day is first in sequence.

So, for example, today there were 2427 more stocks advancing than declining. Column B represents the difference between the more recent day’s Column A value and the Column A value for the day preceding it, which I am trying to use as a relative momentum gauge. What’s the best way to determine and numerically EXPRESS the momentum of advancing to declining stocks from one day to the next here?–THE NEGATIVE NUMBERS ARE THROWING ME. On day 6, for example, you can see that the downside momentum (Column B: -2120) was GREATER than day 7′s upside Mo of (106), but -2120 is expressed as a NEGATIVE number because of more decliners and appears less.

A:B

2427:2157
270:827
-577:605
-1162:598
-1760:-485
-1275:-2120
845:106
739:1537
Further clarification: Obviously removing the negative signs doesn’t solve the problem as you can see when comparing Day 5 to Day 6.
Am I correct that if I simply say in Excel: =IF (A1>A2, B1). Then, create a separate column C, subtracting A1 from A2, and then asking =IF (A1<A2, then C1). From there, I then merge the positive values and it will tell me whether the momentum was greater regardless of whether there were more stocks advancing or declining on any given day?
Yes, I think it is just a matter of removing the negative signs in the second column. Right?