NEW YORK (TheStreet) -- Shares of Graphic Packaging Holding Co. (GPK - Get Report) are slumping 4.04% to $12.72 on heavy trading volume early Tuesday afternoon following the release of its 2016 first quarter results.

Before today's opening bell, the Atlanta-based packaging company posted adjusted earnings of 20 cents per diluted share, beating analysts' estimates of 18 cents per share.

Revenue increased 2.6% to $1.03 billion year-over-year, but was slightly below analysts' expectations of $1.05 billion.

"We delivered a very solid first quarter," President and CEO Michael Doss said in a statement, "Sales were up 2.6% driven by both acquisitions and modest volume growth in our core legacy business. Adjusted EBITDA Margin increased 70 basis points to 18.7%."

About 4.01 million of the company's shares have been traded by early this afternoon compared to its average volume of 3.01 million shares per day.

Separately, TheStreet Ratings Team has a Buy rating with a score of B on the stock.

The company's strengths can be seen in multiple areas, such as its revenue growth, impressive record of earnings per share growth, compelling growth in net income, good cash flow from operations and notable return on equity.

The team believes its strengths outweigh the fact that the company has had lackluster performance in the stock itself.

Recently, TheStreet Ratings objectively rated this stock according to its "risk-adjusted" total return prospect over a 12-month investment horizon. Not based on the news in any given day, the rating may differ from Jim Cramer's view or that of this articles's author.

You can view the full analysis from the report here: GPK