TY JOUR TI Popular indicators of the crisis in financial markets KW stock market KW crisis KW correction KW Buffett indicator KW Shiller P/E KW buyback KW treasury KW quantitative easing KW total market cap JO The Economy under Guard AU Kornilov, D.A. AU Kornilova, E.V. PY 2021 IS 2021 PB Nizhny Novgorod Academy of the Ministry of the Interior of Russia