In escrow on a house, down payment (RSUs) is still in the market-- do I dump everything Monday?

I have a classic story of using my RSUs to apply (and be approved for) a loan. The house I'm buying is set to close March 19th. I stupidly didn't sell when things were trending downwards because some good news just came out about my company, but now it seems everyone is dumping and it's likely best I jump ship.

Do I just dump it all Monday morning and cut my losses? I don't need the cash for another two weeks.

I know you can't time the market I'm just curious what others would do after hitting a market ATL.