share. First quarter 2017 diluted net income per common share included an $.08 per share charge from acquisition-related costs.
Net sales in The Americas Group increased 6.6% to $2.08 billion in the quarter due primarily to higher architectural paint sales volume across most end market segments and selling price increases. Net sales from stores in U.S. and Canada open for more than twelve calendar months increased 5.2% in the quarter over last year’s comparable period. The Americas Group segment profit increased $32.2 million to $337.4 million in the quarter due primarily to higher paint sales volume and selling price increases, partially offset by increased raw material costs. Segment profit as a percent to net sales increased in the quarter to 16.2% from 15.6% last year.
Net sales of the Consumer Brands Group increased 103.0% to $656.4 million in the quarter due primarily to the inclusion of Valspar sales and selling price increases, partially offset by lower volume sales to some of the Group’s retail customers. Valspar sales increased Group net sales 108.3% in the quarter. Currency translation rate changes increased net sales by 1.6%. The revenue reclassification related to the adoption of ASC 606 reduced net sales by 2.1%. Segment profit increased to $74.2 million in the quarter from $55.9 million last year due primarily to the inclusion of Valspar and selling price increases, partially offset by increased raw material costs. As a percent to net external sales, segment profit decreased in the quarter to 11.3% from 17.3% last year due primarily to acquisition-related impacts and higher raw material costs, partially offset by selling price increases. In the quarter, segment profit was increased by Valspar operations profit of $56.7 million, partially offset by purchase accounting amortization expense of $31.8 million.
The Performance Coatings Group’s net sales stated in U.S. dollars increased 153.4% to $1.23 billion in the quarter due primarily to the inclusion of Valspar sales and selling price increases. Valspar sales contributed 148.1% to Group net sales in the quarter. Currency translation rate changes increased net sales by 3.9%. Stated in U.S. dollars, segment profit increased in the quarter to $90.8 million from $57.1 million last year due primarily to the inclusion of Valspar and selling price increases, partially offset by increased raw material costs. Currency translation rate changes increased segment profit $4.6 million in the quarter. As a percent to net external sales, segment profit decreased in the quarter to 7.4% from 11.8% last year. In the quarter, segment profit was increased by Valspar operations profit of $98.1 million, partially offset by purchase accounting amortization expense of $57.5 million.
The Company purchased 600,000 shares of its common stock in the three months ended March 31, 2018. At March 31, 2018, the Company had remaining authorization to purchase 11.05 million shares of its common stock through open market purchases.
Commenting on the first quarter, John G. Morikis, Chairman, President and Chief Executive Officer, said, “The Company performed well in the first quarter despite some widely recognized headwinds, including a slow start to the painting season in North America, persistent raw material inflation and choppy global economic growth. The contribution of the Valspar business to our consolidated revenue and profit continues to build momentum, and we saw positive sales volume, pricing and improving operating results from each of our reportable segments. The Americas Group posted another quarter of volume growth and profit improvement. Our Consumer Brands Group finalized a significantly expanded partnership with one of its largest retail customers which we expect will be accretive to net sales this year. The Performance Coatings Group had volume and sales growth across most of their businesses. Both Consumer Brands and Performance Coatings Groups have made great progress in integrating commercial teams and key business processes relating to pricing, selling and marketing programs.
“In the first three months, we opened 4 net new store locations in The Americas Group. During the quarter, we increased the dividend rate to $.86 from $.85 last year. Our cash generation remains strong, which has enabled us to resume open market treasury stock purchases after suspending these purchases for the last 8 quarters.