# best stock movement analysis sources?

**URL:** <https://boards.straightdope.com/t/best-stock-movement-analysis-sources/849149>\
**Category:** In My Humble Opinion\
**Created:** [March 9, 2020, 3:00pm UTC](https://boards.straightdope.com/t/best-stock-movement-analysis-sources/849149 "2020-03-09T15:00:38Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![Fotheringay-Phipps](https://avatars.discourse-cdn.com/v4/letter/f/d9b06d/32.png) [@Fotheringay-Phipps](https://boards.straightdope.com/u/Fotheringay-Phipps)\
**Post date:** [March 11, 2020, 6:41pm UTC](https://boards.straightdope.com/t/best-stock-movement-analysis-sources/849149/21 "2020-03-11T18:41:48Z")

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> [@Jim\_Peebles](#):
>
> I want a detailed analysis, with tables of numbers and graphs. I don’t want a handwaving couple of sentences. If there is a coronavirus “fear factor”, I want to see the equation of the assumed model and details on how they estimated it. I am not fooling around here.

All models of the sort you describe are junk.

That’s actually an understatement, because in reality they are worse than junk. Because unlike plain old junk they have a veneer of sophistication, with all the numbers and formulas and equations, so they can lure you into thinking that they’re not junk. But they are.

GIGO. You can have the most sophisticated model in the world, full of completely logical and valid formulas, but which is extremely sensitive to a few key assumptions, such that the answer will vary wildly based on these inputs. And these assumptions are unknowable. So the output from the models is completely worthless.

It’s a mistake to look in this direction.

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