Post #1859 by mungofitch on the Berkshire Hathaway board

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- Manlobbi

Stocks A to Z / Stocks B / Berkshire Hathaway (BRK.A)

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(2) from looking at the trend line where the trend line is defined using data only available prior to each date?
The second one is "walk forward" and uses data only available to date.

Definitely this one...it would be useless otherwise, like one of the flaws of the dangerous/dumb "BMW method" charts with their crystal ball effect.

Similarly, in my tests the data for a given reporting period start getting used only when the statements are out, not when that financial quarter ended.

Jim

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