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Market starts to react on Corona Virus. IMO it is just the trigger, not the cause though. The Economy has been kept alive for way too long by FED, ECB etc. with measures like "Not QE", balance sheet expansion in the repo market, which then directly inflates stock prices or countries letting companies like NASDAQ:AMZN pay no taxes at all (while automating away jobs). Thus the booming economy was never stable as only the shareholders profited off of it but not the middle class (inequality increasing, especially in countries like USA). Now is pay day for shareholders.
Left: Price targets for TVC:SPX / SIX:SMI based upon simple support lines
Top Right: CBOE:VIX (Volatility indicator) shows troubling times ahead as it is rising sharply now.
Bottom right: Inverted Yield Curve Un-Inverts as of now. It is an important indicator to show, whether the US economy is slipping in a recession.