Research Article

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

Table 11

QARDL estimation results: pandemic period (independent variable: IDEMV).

Quantile (τ)0.250.500.75

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

Short run
 Const4.00730.37672.47470.783356.94430.0000
 AL_1−0.98170.0000−0.78200.0000−0.74290.0000
 AL_2−0.02450.10670.00380.89890.07840.0713
 AL_3−0.03110.0415−0.05450.0717−0.08890.0414
 AL_4−0.04990.00100.00830.78030.12030.0054
 IDEMV−0.77330.0001−1.77510.0000−3.46400.0000
 IDEMV_10.61160.00352.40190.00004.07130.0000
 IDEMV_20.81500.00020.25870.54770.17800.7739
 IDEMV_30.59570.00581.97610.00002.66560.0000
 IDEMV_40.11400.5696−0.29820.4541−0.50250.3812

Long run
 AL_2−0.02500.10760.00490.89870.10550.0663
 AL_3−0.03160.0411−0.06960.0721−0.11970.0428
 AL_4−0.05090.00100.01070.77990.16190.0051
 IDEMV−0.78770.0001−2.26990.0000−4.66260.0000
 IDEMV_10.62300.00353.07130.00005.48020.0000
 IDEMV_20.83020.00010.33080.54490.23960.7728
 IDEMV_30.60690.00552.52690.00003.58810.0000
 IDEMV_40.11620.5687−0.38130.4558−0.67640.3850

Note. Table 11 reports the QARDL estimation results of the effect of 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%.