Escrow.com released their Domain Investment Index for Q2, 2023.

They started out with their executive summary stating the following:

Total domain name volume on Escrow.com eased from $129.8M in 1Q23 down to $89M. Overall, 2Q23 has less mega domains in comparison to the previous quarter. Volume is slowly picking back  up after the recently held Namescon event at the beginning of June.

Total transaction value, by region
Domain name transactions transacted from the United States and the United kingdom eased from $87M to $62.3M, and $22M to $13.6M respectively in 2Q23. On the contrary, the value of transactions from China increased in value from $3.6M to $14.3M in 2Q23.

You can view the whole report here