I will say this for Igy, that while 15 months is arbitrary, it actually makes more sense than YTD because of the huge Q4 moves last year.
Because I got in a bit late this year, my b&h test is currently underwater, but by less than 1% now.
The longer I hold it, the easier it becomes to neglect. I made up my mind to try it out for a year, and I am pleased with my psychological flexibility. Took a bit to adapt, but here I am. Yes I have held for this long before, but I always had targets.
Still waiting for my events—trade resolutions (no matter what), rate decreases, elections, and QE. B&H has to ride them all out before I will tinker with it.