The Hold rating suggests that Truist Securities does not see significant upside or downside in the near term for Sealed Air's stock, indicating a neutral outlook. However, the increase in the price target from $38 to $40 implies a slightly more positive view on the company's valuation, which could lead to some positive sentiment among investors. The impact is likely to be moderate as the rating did not change to Buy or Sell, and the price target increase is relatively small.