US STOCKS-Futures imply flat open with indexes at record levels
* Dow, S&P 500 may come off fourth month of gains
* VIX near multi-month lows, may be sign of complacency
* Ariad soars in premarket trading on hopes for drug
* Futures up: Dow 15 pts, S&P 1.3 pt, Nasdaq 2 pts (Updates prices, adds Broadcom news)
By Ryan Vlastelica
NEW YORK, June 2 (Reuters) - U.S. stock index futures pointed to a flat open on Monday, with investors finding few reasons to keep pushing shares higher, with the Dow and S&P 500 at record levels.
* Equities have been strong performers lately, with the Dow and S&P ending their fourth straight monthly rise in May and the Nasdaq up for its third straight week last week. However, those gains have recently come on anemic volume, a trend that looks to continue Monday, suggesting the rise lacks conviction.
* Investors continue to watch the yield of the U.S. Treasury 10-year note, which remains near an 11-month low. Low yields could help boost dividend-paying stocks, including in the telecom and utility sectors.
* The CBOE Volatility index continues to hover around lows not seen since March 2013. That the so-called "fear index" is so low has many, including officials at the Federal Reserve, concerned the market is complacent. Continued...