>From _The Theory of Investment Value_, 1938
John Burr Williams

http://www.cyberramp.net/~investor/theory.htm

"The formulas for the investment value of common stocks given in earlier
chapters would be of little use unless some way could be found to estimate
the size of the dividends whose present worth it was there proposed to take.
How to estimate these future dividends is the heart of the problem, and in
helping to solve this problem, the present book hopes to make a significant
contribution to the art of Investment Analysis. 

"The solution to be proposed is straightforward; it consists in making a
budget showing the company's growth in assets, debt, earnings, and dividends
during the years to come. This budget is not drawn up with debit and credit,
however, using a journal and ledger as an accountant would do, but is put in
algebraic form in a way that is altogether new to the accountant's art. 

"The simplifying assumptions can be set down mathematically in the form of
seven constant characteristics of such a company: (i) The return on invested
assets stays the same; (ii) The ratio of stocks to bonds in its
capitalization stays the same; (iii) The rate of interest paid on bonded
debt and other senior securities stays the same; (iv) The rate of growth of
invested asses stays the same; (v) We prove that for a company with these
properties until the point of slackening growth arrives, the rate of net
dividend, expressed as a ratio to book value, stays the same; (vi) Since all
terms on the right-hand side of these last equations are constant, according
to characteristics (i) to (iii) set forth above, it follows that the rate of
earnings on book value of common is also constant under these conditions. We
prove the reinvestment rate, expressed as a ratio to book value, constant
like the rate of earnings on book value of common; (vii) Since the growth in
assets in percent per year is constant by hypothesis it follows that the
reinvestment rate is also constant. Having proved that both the rate of net
dividend and the reinvestment rate are constant, we can now see that the
pure dividend rate, expressed as percent of book value, is also constant. We
can now show that the dividends themselves follow a compound interest law
till the point of inflection is reached. 

"Since dividends thus increase according to a compound-interest law up to
the point of inflection in the company's growth, the value of its stock may
be found by one of the formulas already worked out in Chapter VII, §2, which
is Equation (22b)." 

Regards, 

Tom Walker
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