From Late Feb to May
Little background, we were going to run out of funding around mid-late February (drop dead date was the March auctions), and this delays it until probably May.
For equity investors, you'll probably keep getting decent returns till these negotiations start hitting the news wires and the algos that screen headlines start selling off. You still have idiosyncratic risk with earnings season, etc. but I'm more so talking about the S&P or buying ES futures.
For fixed income investors, spreads will probably tighten to stay somewhat range-bound (not a whole lot more to tighten unless you have negative spreads) and Treasury rates will likely keep gradually rising.
Disclaimer: This post is informational and should not be deemed as investment advice.