ORLANDO, Fla., Oct 9 (Reuters) – “Buy dollars, wear diamonds,” goes an old forex market adage.

It also summarizes macro hedge funds’ trading strategy today – while most investors were smoked out in the third quarter as stocks, bonds and commodities slumped, macro funds have benefited thanks to the strengthening US dollar.

Speculators are riding the crest of the greenback’s most bullish wave in over half a century. There is little sign that the wave will collapse anytime soon, and…