Last week, or the week prior, Charlie Munger (Buffett's life long business partner) was asked what they've been doing during the market sell-off? Munger's reply, "sitting on our ass". He also said they were looking for buying opportunities; no doubt, there were many for those with cash in hand.
My dad started investing in BRK in 1965. I started investing in BRK when "B" shares were offered in 1996.
I stuck it out with BRK (Buffett/Munger) during the late 90s when the "high tech" economy was booming in the financial sector. All the TV talking heads on the cable financial channels were saying Buffett was a dinosaur and had lost his "Midas" touch. Buffett will be a "has been" as the "new" market and economy developed, leaving Buffett in the dust. Hmmm...
I suspect if you were a day trader (not me, never tried to time the market) and had an inkling of what you were doing, you could have made a boat load of cash in the late 90s. But, many not only lost a boat load of cash, but the boat as well, when it all came crashing down. Leaving BRK standing prosperous with tens of billions of cash on hand.
It was then I knew I'd stick with BRK.B for a lifetime (at least Buffett's/Munger's).
Even so, did anyone note where Buffett put his wife's inheritance/holdings last year?
S&P 500 Index fund...90% Vanguard Index 500 Admiral Shares
US government bonds...10% Vanguard Short Term Federal Admiral
That's where I'd park my money if riding around the world and didn't want to worry about keeping an eye on it or market fluctuations; even wide swings due to pandemics. The Vanguard 500 Index Admiral has been very good to me over the decades as well.