Please explain what is meant by "Float held by mutual fund owners"

I see the ownership breakdown of MSFT on yahoo.finance.com, and the numbers below do not sum to 100%.
BREAKDOWN
% of Shares Held by All Insider and 5% Owners:     13%
% of Shares Held by Institutional & Mutual Fund Owners:     61% % of Float Held by Institutional & Mutual Fund Owners:     70%
I can't understand why this doesn't sum to 100%. Moreover, how is it that Bill Gates is worth over $40B when he owns less than 13% of a $152B company, and 13% of $152 = $20B?
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Can you give us the website where you found this data, please? Thanks.

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Lubow, you need new glasses. He said very specifically at Yahoo finance.

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The float is the total amount of publicly held stock, Institutions and MF's own 70% of that.
There are other stockholders not listed in those stats so they don't add to 100%. Like I just recently became one. And I am not an institution, MF, insider, or 5% owner.
Just maybe Gates has some worth other than MS stock?
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He sold a slug of MSFT and bought GOOG.
704set

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wrote:

Well, that's because it's $152B revenues *per year^, not a $152B Company. Which is also why the people who understand PCs, keep telling the idiot Wall Street accountants,that the people who understand PCs, and Logic invented Linux, Fiber optics, MiniHarddisks, Pv Cells, Optical Computers, HDTV, CD, DVD, C++, Holograms, RISC Processors, Parallel Processing, USB, XML, On-Line Banking, On- Line Publishing, GPS, Cell Phones, and Autonomous Vehicles; not G.E or IBM.
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On Sun, 1 Feb 2009 09:55:49 -0800 (PST), "2.7182818284590..."

There's no reason to expect it to.

Are there other share classes not reported there?
-- Roy L
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