Of course, here is an adapted version that sounds professional and conveys a competent lawyer's impression:
Division of assets is often central in divorce. Unless separation of property was expressly chosen, participation in acquired property applies. Assets acquired during marriage, such as wages, are generally divided equally, except gifts, inheritances or personal items.
The inventory of assets available, such as vehicles, real estate and account balances, is determined at dissolution of the property regime, generally upon filing for divorce. In certain cases, such as judicial separation, it may occur earlier. This date determines only which assets exist, not their specific value.
These assets are valued as at the divorce judgment. Many remain stable, but others, such as shares, may change significantly.
In summary: the relevant valuation date for your account balance is the divorce judgment. If you need support with this complex matter, we are happy to help with our legal experience.