Roger Nusbaum submits: If you read Barry Ritholtz you know that the CNBC/FTSE Global 300 Index exists, but finding information is not that easy. I found this PDF on the FTSE site.

Like a lot of global mega cap-tilted indices it is about 50% US (52.03% to be precise). The UK and Japan are the other two big countries at 11.97% and 7.39% respectively; I am surprised Japan is not a little heavier weighted in the index. France is the only other country above 5% at 6.28%.

There are some interesting countries like Norway, Greece and Argentina included, but they are so small that I don't think they can have any impact.

Over on Barry's site there are some comments that make fun of this along the lines of they will make an ETF out of this and it will be a dud. I am aware two ETFs the mimic similar indices; the iShares S&P Global 100 (IOO) and the streetTRACKs Global Titans (DGT). IOO and DGT are almost identical, and any investment product that might come from the CNBC index will fall right in line.

You might find some commentary saying that these global mega cap funds are duds. More likely is that it has been a while since mega caps provided any long-lasting and substantial leadership. At some point mega caps will again lead the market, leaving other once hot segments for dead.