Fabtech  Mar 23  Comment 
The recovery in equipment sales continued for the fourth consecutive month with North America-based manufacturers of semiconductor equipment posted $1.33 billion in orders in February 2012. The SEMI book-to-bill went over parity at 1.03 for the...
Benzinga  Jan 31  Comment 
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EE Times  Nov 18  Comment 
The book-to-bill ratio for North America-based semiconductor equipment vendors crept up slightly in October after slipping to its lowest level in more than two years in September, according to the fab tool trade group SEMI. View the full article...
EE Times  Oct 22  Comment 
The book to bill ratio for North America-based semiconductor equipment manufacturers—the three-month average ratio of bookings to billings—declined to 0.75 in September, its lowest level since May 2009, according to the trade group SEMI. ...
EE Times  Sep 16  Comment 
North America-based semiconductor capital equipment makers reported a book-to-bill ratio of 0.80 in August, the fourth straight month the book-to-bill has declined and the eleventh straight month it has been below parity, according to the fab tool...
EE Times  Jul 19  Comment 
The three-month rolling average of bookings to billings posted by North America-based makers of semiconductor production equipment slipped in June for the second consecutive month, according to the fab tool trade group SEMI. View the full...
EE Times  Jun 17  Comment 
North America-based manufacturers of semiconductor equipment posted $1.62 billion in orders on a three-month average basis in May and a book-to-bill ratio of 0.97, according to the fab tool trade group SEMI. View the full article HERE.


Book-to-bill is the ratio used by industries to measure their demand-to-supply ratio for their orders. It is the ratio of the number of orders received to the number of orders filled.

A company with a book-to-bill ratio larger than one means that it has more orders than it can fill at it's current capacity. A ratio equal to one means that it is able to meet all orders received. A ratio less than one means that there are less orders than it is capable of delivering.

The most prevalent usage of this monthly ratio is within technology and semiconductor companies.

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