Cross listing,

Another knock on effect of the GFC: Stock exchanges merge as companies seek to both signal higher credibility and maintain access to working capital. This means that global exchange markets might shrink to just 2 or 3 main players. NYSE is a shoe-in, but London vs Deutsche is less clear cut.

Singapore, Tokyo, Shanghai and Hongkong share Asia and is a real toss up for who will get the Asia's capital capital. Part of the reason why this battle will take a while, "Asia's lack of a regional regulator means it hasn't undergone any of the cross-border market liberalization measures seen in the west such as Europe's Market in Financial Instruments Directive (MiFID). This means there is a huge fragmentation of rules and regulations between markets, limiting the scope for cross-border trading and reducing liquidity."

By the numbers,

The Shanghai Stock Exchange and BM&F Bovespa, more on Brazil and China at http://www.eastasiaforum.org/2010/10/28/china-a-motivator-for-latin-america/
this is an interesting story.

Deutsche Börse and NYSE Euronext, with interesting historical parallels. http://www.cfr.org/economics/big-bourse-mergers-back-but-hold-hyperbole/p24112

the London Stock Exchange and Toronto’s TMX Group,

SGX of Singapore and Australia’s ASX are all in takeover talks.

see,

http://www.reuters.com/article/2011/02/14/us-asia-exchanges-idUSTRE71D0Z120110214?pageNumber=2

From: http://www.ft.com/cms/s/0/7c6d8f9a-3a07-11e0-441-00144feabdc0.html#axzz1EFzVNauD