Seems the world economy is growing and changing so fast that staying on top for very long will become harder. Carlos Slim of Mexico did not retain the title very long, as CNBC is reporting Meet the World's New 'Richest Person' -- For Now, a story about Mukesh Ambani. It has been reported that he is just completing a ONE BILLION DOLLAR HOME! Here's how the Indian press reports rank the world's top five richest people as of today, based on known public stock holdings:

• Mukesh Ambani - $63.2 billion
• Carlos Slim Helu - $62.2993 billion
• William (Bill) Gates - $62.29 billion
• Warren Buffett - $55.9 billion
• Lakshmi Mittal - $50.9 billion

To me, this all amounts to creating headlines, since the slight difference between one, two, and three could be altered with a single day's stock movement. Given that Ambani is on the other side of the world with great fortunes in Europe and Asia it could change back and forth depending on which stock exchanges are open at the time. In a rising market you could go to sleep as the richest person in the world and wake up to find you were overtaken, only to find by the close of the market you were on top again.

What's more important is who is taking what actions. What are these supernova rich guys doing with their wealth? In the case of Gates and Buffett, they have become the world's biggest philanthropists. Carlos Slim has expressed a desire to share his wealth as well by setting up a $10 billion foundation -- I'm not sure how far he has gone with that idea. Mittal is still busy buying up all the steel production on the planet, and is now the largest player in the market. That will increase his wealth for now. On the other hand, the Hunt Brothers of Texas thought that way in the 1970s about silver, and found out rather quickly that was not their brightest idea. Steel is likely a much better bet.

This is the fourth update on the stock price status of the first seventeen Chasing Value companies. Closing prices are from September 14, 2007.

The first quarter produced amazing results but the second quarter was downright sad. No one will be surprised to see that anything touching constuction or finance took a bath. I own most of these stocks, so if you do too, I feel your pain. Anyone considering my commentary should "do their homework" too, as James Cramer says on his Mad Money TV show. These recommendations are from the first and second quarter 2007 and I have linked to the original stories.

February 16, 2007: Chasing value: Wells Fargo: Wells Fargo & Company (NYSE: WFC) closed at $35.66 down from $35.76: a loss of -0.02%, even money.

February 23, 2007: Chasing value: Anadarko Petroleum - got it! Anadarko Petroleum Company (NYSE: APC) closed at $50.58 up from $40.84: A gain of 23.85%.

March 3, 2007: Chasing value: Aluminum Corporation of China ADS: Aluminum Corp. of China (ADS) (NYSE: ACH) closed at $60.95 up from $22.98: A gain of 165%

March 20, 2007: Chasing Value: Anglo American - Inflation hedge & more: Anglo American plc (NASDAQ: AAUK) closed at $28.90 up from $24.65: A gain of 17.24%

March 23, 2007 Chasing Value: Cemex and LaFarge look solid: CEMEX S.A. B de C.V. (ADR) (NYSE: CX) closed at $29.17 down from $34.92: A loss of -16.47%. LaFarge (ADS) (NYSE: LR) closed at $37.80 from $39.02: A loss of -3%.

Cemex sank with the continuous reports of the deteriorating housing market in the United States. In the meantime it continues to move forward with the integration of Rinker, the largest supplier of construction materials in Australia. This makes Cemex the largest in the world and sets the stage for continued growth in Southeast Asia. It also is continuing to focus on reducing debt.

Of all the stocks I have written about in the Chasing Value section, I feel that this one suffered the most from guilt by association. I believe it was fairly valued before and it is on sale now. This company, with it's PEG ratio at .83 and lowered, P/E, P/S, P/B (SEE: AOL Money & Finance) has a ROE over 22 and pays about a 2% dividend yield.

In the midst of writing a post about how bored I was reading Up & Down Wall Street by Alan Abelson each week in Barron's (subscription required) just to see him warn of the impending bear market again, and again and again, we got a dose today. In general I enjoy Abelson's wit, insights and vocabulary lessons each each week, but after 18 to 24 months of bearish warnings it was much over done.

Today, perhaps he is conjuring up his commentary for next week when he may really have something to taunt investors about. Given that the DJIA ($INDU) is down 148.27 (1.09%) to 13,501.70, the NASDAQ ($COMPX) was down 30.86 (1.16%) to 26.39.16, and the S&P ($INX) was down 21.73 (1.42%) to 1510.12, there is much to think about. As a buy and hold value guy I can ride out any storm, but I will share with you that today 12 of the 13 stocks in our latest portfolio are down. The one excepton is Tata Motors (TTM), closing at $17.94, up 0.21 (+1.18%). The original story: Chasing Value: Tata Motors LTD - patience, patience, GOT IT!

Two market darlings were also up Apple Inc. (AAPL) closed up $2.02 to $132.35 and Google Inc. (GOOG) was up nominally $0.78 to $543.34.

You can read all the trials and tribulations of the day here: Stocks Decline After Downbeat Forecasts, but in summary, oil up, 30 year mortgages up, retail sales down and sub-prime loans still haunting the market.

Those of you who are new to BloggingStocks can check out my other stories and read Chasing Value or Serious Money to find more potential opportunities and verify my track record as well.

Sheldon Liber is the CEO of a small private investment company and the Principal for design and research at an architecture & planning firm. Check out his other posts for BloggingStocks here.