US STOCKS-Wall St set for flat open; manufacturing data on tap
* Compuware climbs in premarket; near deal to sell itself
* Exelixis tumbles after cancer drug fails study; to cut jobs
* Dollar General ups Family Dollar bid
* Futures up: Dow 12 pts, S&P 1.5 pts, Nasdaq 7.5 pts (Updates prices)
By Chuck Mikolajczak
NEW YORK, Sept 2 (Reuters) - U.S. stocks were poised for a flat open on Tuesday, after the S&P 500 closed out its best month since February, ahead of reports on the manufacturing sector.
* Investors will eye the final August reading on the manufacturing sector from financial data firm Markit at 9:45 a.m. (1345 GMT).
* At 10 a.m. (1400 GMT), the Institute for Supply Management's August reading on manufacturing will be released. Expectations call for manufacturing to dip slightly to 56.8 from 57.1 in July. Also due at 10 a.m. (1400 GMT) is construction spending data for July.
* S&P 500 e-mini futures were up 1.5 points and fair value - a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract - indicated a flat open. Dow Jones industrial average e-mini futures rose 12 points and Nasdaq 100 e-mini futures added 7.5 points. Continuación...