Good, but compared to some of my other automated strategies, not as good. The vol divergence risk can be hard to swallow, at least for me. Sectors work better since vol doesn't change too much between days. The downside for sectors is finding good representive sector baskets, and manual effort needed to adjust them. Rufus
My system trades often (would almost classified as high-freq), betwen 30-80 trades a day, for the pairs strategy. I use tick by tick data, in an universe of around 500-600 equities (including international equities), updating a custom in-memory pairs table / database. I don't compute Sharpe ratios often, last time I computed (mid-june), using weekly data (normalized to annual), it is 0.62 (nothing to write home about). Then again, it is not a classic pairs long / short system, it is more of statistical arb strategy ... so I am not sure if it answers your question.
oh. yes that is perfect answer. i was so far reluctant to get into intraday with the pair strategy. though it looks like the only way to make money given current VIX-levels ... would not mind about sharpe 0.68 in this environment, though in the long run it should be higher IMO.