Piper Jaffray analyst Brent Bracelin remains bullish on MongoDB's growth prospects, particularly within the "nascent but fast growing" cloud database software market, following the company's fiscal Q3 results. . Atlas, the company's cloud database service, topped 185% year-over-year growth reaching a $175M annualized run-rate and contributed to a $9.7M revenue beat, Bracelin tells investors in a post-earnings research note. The analyst would look to build a "core position" in MongoDB over the next six to nine months as the company's growth moderates on tough compares and ASC606 volatility on traditional multi-year licensing deals. He keeps an Overweight rating on the name with a $158 price target.