Catch up on today's top five analyst initiations with this list compiled by The Fly: 1. Ardelyx (ARDX) initiated with a Buy at Citi by analyst Yigal Nochomovitz, who said the irritable bowel syndrome with constipation space is an attractive market for drug development. 2. Intersil (ISIL) initiated with an Outperform at Wedbush with analyst Betsy Van Hees saying the company's "show me/turnaround story is poised to hit its stride in 2016." 3. RPC, Inc. (RES) initiated with a Strong Buy at Raymond James by analyst Marshall Adkins, who expects the company to benefit from an oil price recovery given leverage to pressure pumping. 4. Regeneron (REGN) initiated with a Neutral at SunTrust with analyst Yatin Suneja telling investors that much of the company's pipeline potential is priced-in at current share levels. 5. Seattle Genetics (SGEN) initiated with a Neutral at SunTrust by analyst Yatin Suneja, who said the company's pipeline is promising, but years away from reaching the market. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.