Qihoo 360 Technology (QIHU) and PolyOne (POL) were among the highly rated stocks touching new highs Monday, bucking the market's negative trend. Qihoo, No. 21 in Monday's IBD 50, rose 10% in giant volume. The big move put the Chinese software maker 12% past its recent buy point at 24.40, meaning it's well beyond a proper buying range. The 2011 IPO has been drawing attention for its push into China's search market, which has been dominated by