Sinovac Biotech (SVA), a Chinese drug company in the vaccine sector, is the best performer so far this year among all China ADR's with +543.48% yearly return and +1,084.00% return if calculated from its year low price.

If you look at company's growth history, it is quite impressive:

Market had an one day big drop last Monday but made four days of gains in a row.

The S&P 500 broke its 1020 resistance Friday. Here is the chart:

EMCORE Corporation (EMKR) stock lost more than 60% of its value in two months. It lost an additional 33% after Mr. Andrew Left published his bearish report on EMKR on March 18, 2008.