Top Narrow Based Indexes For December 21 (CYD, JHX, SNDK)

By 11:04 am, the Dow Jones Industrial Average was up 42.84 points, or 0.37%, to 11,520.97, while the broader Standard & Poor's 500 index had gained 5.53 points, or 0.44%. The NASDAQ composite index rose 13.15 points, or 0.50%. Some of the narrow based indexes driving the markets are Chinese Auto Parts Stocks, which have gained 3.0%, Cement Stocks, up 2.1%, and Memory Chip Stocks, moving 1.9% higher as a group. In Tickerspy's Chinese Auto Parts complex, China Yuchai International Limited CYD had surged 5.0%. CYD's trailing-twelve-month revenue is $2.35 billion. The best performing Tickerspy Cement stock has been James Hardie Industries SE JHX, which was up 4.6%. JHX's trailing-twelve-month operating margin is 15.26%. SanDisk Corporation SNDK is today's leading Tickerspy's Memory Chip stock, gaining 4.9%. Raymond James analyst Hans Mosesmann upgraded SNDK from “market perform” to “outperform.” Read more from Benzinga's Markets.