Originally Posted by
Baa_Baa
You obfuscating the point, the correlation is not in terms of 'percentage' it is simply in terms of 'direction' (which is currently down) and $XAL is a leading indicator when there is correlation. You're right though, $XAL fell further overnight and broke down through medium term support, next supports at the Feb levels.
The reason $XAL has relevance is that large offshore holders of AIR are likely to also invest in other airlines (within the Airlines Index) and this influences decisions about portfolio weightings to the sector and in turn flows into buy/sell decisions on individual airline stocks.
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