Which matters and when for gold – London or New York?

Short answer : both, but at different times. This research applies a timevarying information shares analysis to 25 years of COMEX gold futures and LBMA AM gold fixes, and for the first time demonstrates when london and when new york contribute most to the determination of the world gold price

A paper on this is forthcoming in Applied Economics Letters, while here is a video discussing it and the paper itself can be on SSRN