 Main Street Capital Corp. MAIN, 2.03 shares fell 0.6 in premarket trades Monday after Raymond James analyst Robert Dodd downgraded the stock to market perform from outperform, based on valuation. With the shares currently trading at the upper end of the historic trading range, we see limited upside to net asset value per share in the near-term with what appear to be economic headwinds which should potentially moderate equity appreciation and dividend income, Dodd said in a research note. 