Pure Storage rises in premarket trades ahead of inclusion in S&P MidCap 400

Pure Storage Inc.’s stock
PSTG,
+5.06%
was up 6.4% in premarket trading Wednesday after S&P Dow Jones Indices said the company will replace Patterson Companies Inc.
PDCO,
-0.56%
in the S&P MidCap 400. Patterson Companies will be included in the S&P SmallCap 600 to replace Chico’s FAS Inc.
CHS,
which is being acquired by Sycamore Partners. All the changes will take place prior to trading on Friday. Patterson Companies’ stock rose by 1.6% in premarket trading.