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Politics : Formerly About Applied Materials
AMAT 228.20-2.3%3:08 PM EST

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To: LemurHouse who wrote (30846)6/6/1999 6:11:00 PM
From: Ian@SI  Read Replies (1) of 70976
 
Andy,

Agreed that predicting either supply or demand is far from an exact science.

Any studies I've seen of the accuracy of forecasts by DataQuest or IDC shows that they seldom come close. Growth is always much larger (frequently by more than a factor of 2) than the forecast. And contractions are much more pronounced than they guess.

On the supply side, decisions to shut down fabs or mothball parts of fabs, or not equip a new fab can change the planned supply significantly. Various factors can impact yield either positively or negatively in a fashion completely unforeseen by the forecasters.

For the quants, this leads to a very difficult life.

I just like the story for the equipment companies. ... at least as I see that story. ;-)

Ian.
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