** Canadian specialty tea retailer's shares down 4.3 pct at $21.46
** Four brokerages initiate coverage with "neutral" or equivalent rating, William Blair starts with "outperform"
** BMO Capital Markets starts with price target of $21, below Monday's close of $22.48, saying that the company was already trading higher than other "early-stage, high-growth companies" and above rivals like Teavana
** Earlier this month, Davidstea reported a loss in its first quarterly report as a public company
** Up to Monday's close, stock had fallen nearly 17 pct since its debut on June 5