My broker is very sophisticated (and expensive) so I'm sure they offer it, though as I said, I rarely hold overnight so it never mattered to me how they calculate it for tax purposes. I do sometimes leg into or out of positions, but I keep my own records of my trades and which lots I'm selling and that may be different from how my broker does it, but it doesn't matter if all lots are sold in the end, it's a wash either way it is calculated and I let my accountant figure out the wash sale rule implications, LOL.
Newly