The Institute for Supply Management/Thomson Reuters's survey of purchasing managers (manufacturing and non-manufacturing)
Access: Everyone gets the monthly reports at 10 a.m. ET, but trading firms can pay for a feed that can be easily read by computers. Thomson Reuters won't disclose the cost.
Impact: ISM offers a snapshot of the health of the manufacturing and non-manufacturing industries in the United States. Anything above 50 signals expansion, while a reading below 50 means activity is contracting.
Thomson Reuters wouldn't comment on who receives this data.