Volatility jump
Volatility is spiking, with the VIX up more than 20% today alone. That seems like a big spike, but it has been relatively common. Below, we can see the S&P 500's forward returns after the VIX rises 20% or more to at least 30-day high, but was still below 30 at the time. Returns were a tiny bit below random in the very short-term, but surprisingly average afterward.

