The ratio of LUV/JBLU is turning up after a long slide of 50% from 3.00 down to 1.50 where it is breaking a 5+ month downtrend in the past two days.
If you look at the pure price chart overlay of the two stocks, they oscillate back and forth over time and looking back one year (in this chart) you can see that LUV is lagging a bit lately and JBLU is ahead of itself.
I am looking at putting on both of these positions: Short JBLU to fall relative to LUV. And Long LUV to rally relative to JBLU.