Everyone on this forum is going to want to know where you had your equity money invested that you only lost 15 percent!!! The loss range, all over the equity markets, runs from 35 to 65 percent.
Normally, when an asset class takes a big hit you take money from the asset classes that did better and transfer it to the asset class that took the big hit.
Suppose, for instance, that you have a 60/40 equity/fixed income portfolio and the equity side fell 40 percent. If your old portfolio was 100, your new portfolio would be 76 with a 36/40 mix of equities and bonds. To balance the 76 to your target 60/40 allocation you would now need to have a 46/30 mix of equities and bonds to be at your 60/40 allocation.
You can start the rebalancing process by adding that $5,000 to the equity side of your portfolio. It will reduce, but not eliminate, the need to transfer money from fixed income to equities.
Scott