Does this actually work on the real stock market? (i.e. with so-called "smart money" and not penny stocks)
I've never seen an IPO underwhelm that much and have it not be a negative overhang. The financials will either support $10b, something more, or something less, in terms of exciting investors. If the financials - growth etc - are underwhelming, institutional investors are not going to magically get excited about the stock just because it comes out at $10 billion. Twitter (among others) has has been a disaster, institutions are going to be skeptical unless the numbers are extremely encouraging.