20国集团(G20)股票收益的波动特征。(a) US_S&P 500 (b) Japan_Nikkei 225 (c) Germany_DAX, (d) France_CAC 40, 100 (e) UK_FTSE Italy_MIB (f) (g) Canada_TSX Russia_RTS (h),(我)China_SSE复合,(j) Argentina_MERVAL Australia_All普通(k), (l) Brazil_Bovespa (m) India_BSE Sensex (n) Indonesia_Jakarta复合,(o) Mexico_IPC (p)沙特Arabia_TASI (q)南Africa_INVSAF 40 (r) Turkey_ISE 100,南Korea_KOSPI (s)。