First, don't park it in actual cash or you'll lose value to inflation which is currently running high. At a minimum put it in treasuries.
Second, trying to time the market is almost always a suboptimal strategy. The question is when will you likely need the money? If you won't need it for 10 years or more, keep it in index funds. Otherwise, treasuries.
Historically even if you invest into index at the worst possible time (prior to a crash) and keep holding you still outperform inflation long term. Timing the market is impossible. Just keep an emergency fund in a money market or savings account and hold the rest.
Just need a larger emergency fund to mitigate the risk, especially if you work in tech and you feel the crash would heavily impact your labor earnings (including possibly extended unemployment)
Others have given practical replies, so here's a philosophical one: Sometimes it's just not practical to make much money from being right.
I want to acknowledge and empathize how much it sucks, while also putting it out there so that nobody suffers blaming themselves for something that might not be achievable.
Disclosure: I've been waiting-and-seeing too long myself, and I should probaby stop trying to time/strategize.
BRK has been roughly flat since the beginning of 2025; you might be better off in bonds or money markets (depending on your beliefs about near-term inflation).
Greg Abel has mostly replaced Buffet. Neither really care about the market as a whole. They're willing to buy any reasonably priced security with a promising future regardless of where the rest of the market is at. It's just that there are usually more of these available when the market is down.
Not that I have any skills in stock-picking whatsoever, but couldn't the recent lukewarm performance not also be an argument for BRK?
I mean their cash pile is also invested in money markets (so you get that), and the rest of the portfolio consists of quality companies where their (combined) valuation didn't explode in the last 1,5 years. So it's an opportunity to invest into something that might not be overheated.
There is no way the US’s leaders let the prices of publicly traded securities go down or even stagnate relative to the US dollar. These publicly traded securities make up a significant portion of the US leaders’ and most active voters’ assets, plus almost all state and local US governments depend on the securities’ price growth to meet their deferred compensation obligations.
The alternative to risk in US securities isn’t the USD, it’s a stake in other stable countries with resources.
Second, trying to time the market is almost always a suboptimal strategy. The question is when will you likely need the money? If you won't need it for 10 years or more, keep it in index funds. Otherwise, treasuries.