Amazon's acquisition of iRobot is a significant move to strengthen its position in the smart home market. This deal is likely to be viewed positively by investors as it shows Amazon's commitment to expanding its product line and entering new markets. The acquisition could lead to synergies and innovation in the smart home space, which may positively impact Amazon's stock price in the short term.

The agreement for iRobot to be acquired by Amazon at $61 per share is likely to be seen as a positive development for iRobot shareholders. The acquisition price represents a premium over the current trading price, which typically leads to an increase in the stock price of the company being acquired. Therefore, iRobot's stock is likely to experience a positive short-term impact as a result of this announcement.