Post Holdings, Inc.'s (POST) shares have soared 12.7% in the past three months, outperforming the industry and the S&P 500's growth of 9.1% and 2.6%, respectively. After yesterday's closing at $115.15, the stock is currently hovering close to its 52-week high of $118.96, touched on Sept. 5. Given POST's strong performance on the bourses, investors are at a fix on whether they should cash in or stay invested. Factors Supporting POST's Growth Post Holdings is being driven by strategic initiatives and a strong ...