After collapsing $25 or 16.5% on Friday following disappointing Q2 guidance, Baidu (BIDU) investors are looking for the best entry point for the Chinese internet search giant. The industry has a standard 3-day rule for buying beaten down stocks, but the standard is so prevalent these days that my theory is that stocks are reaching lows on the 2nd day now. Agree - if you think BIDU reaches the low for the week on Monday. Disagree - if you think BIDU doesn't hit a low until Tuesday or later. Disclosure: Long BIDU