Research Article

Illiquidity, Uncertainty Indices, and COVID-19 Outbreak Conditions: Empirical Evidence from the US Financial Market

Table 13

QARDL estimation results: pandemic period (independent variables: EPU and IDEMV).

Quantile (τ)0.250.500.75

VariablesCoeffPr (>|t|)CoeffPr (>|t|)CoeffPr (>|t|)

Short run
 Const2.43250.633421.30420.134190.30510.0001
 AL_1−0.97960.0000−0.83530.0000−0.80950.0000
 IDEMV−0.65850.0010−1.23870.0254−1.97560.0243
 EPU−0.05530.0381−0.11720.1141−0.18490.1153
 IDEMV_10.63590.00272.67660.00004.02340.0000
 EPU_1−0.03520.1917−0.01480.8434−0.02000.8658
 IDEMV_20.68700.00170.37810.53241.92270.0455
 EPU_2−0.03120.24810.04180.5778−0.09630.4179
 IDEMV_30.69530.00122.30780.00013.19410.0007
 EPU_30.07440.00580.03860.60570.07000.5546
 IDEMV_4−0.04270.83410.21490.70490.74940.4043
 EPU_40.00640.8046−0.11210.1189−0.15030.1861

Long run
 IDEMV−0.67220.0009−1.48300.0267−2.44040.0277
 EPU−0.05650.0365−0.14030.1094−0.22840.1092
 IDEMV_10.64920.00273.20460.00004.97000.0001
 EPU_1−0.03590.1908−0.01770.8433−0.02480.8656
 IDEMV_20.70130.00140.45270.52902.37510.0386
 EPU_2−0.03180.24720.05000.5778−0.11900.4175
 IDEMV_30.70980.00102.76290.00013.94570.0006
 EPU_30.07600.00570.04620.60600.08640.5557
 IDEMV_4−0.04360.83410.25730.70350.92570.3972
 EPU_40.00650.8045−0.13420.1187−0.18570.1870

Note. Table 12 reports the QARDL estimation results of the effect of EPU and IDEMV on the illiquidity market during the pandemic period that spans from December 31, 2019, to December 31, 2020. Significant at 10%; significant at 5%; significant at 1%.