A B C D 14 15 Qanntas Airways Limited daily stock return Singapore Airlines Limited daily stock return Cathay Pacific Airlines daily stock return Date 16 2020/4/1 17 -0.053254438 0.01618705 0.009852217 2020/4/2 18 -0.046875 -0.026548673 -0.001219512 2020/4/3 19 0.045454545 0.00976801 2020/4/6 20 0.042622951 0.048695652 0.027811366 2020/4/7 21 0.022012579 -0.008291874 0.012941176 2020/4/8 22 0.095384615 0.025083612 0.049941928 2020/4/9 23 0.033707865 0.019575856 0.008849558 2020/4/14 24 -0.035326087 -0.0128 -0.020833333 2020/4/15 25 -0.022535211 -0.003241491 0.008958567 2020/4/16 26 0.07204611 0.01300813 0.038845727 2020/4/17 27 -0.034946237 0.003205128 2020/4/20 28 -0.035313002 -0.052183174 2020/4/21 29 0.064066852 0.008319468 0.013483146 2020/4/22 30 0.005952381 0.286130363 0.00443459 2020/4/23 31 0.01497006 -0.016287375 -0.008908686 2020/4/24 32 0.044247788 0.008278523 -0.003370787 2020/4/27 33 -0.011299435 0.013135018 0.024802706 2020/4/28 34 0.048571429 0.013309844 0.0110011 2020/4/29 35 -0.029972752 0.003283755 -0.014145811 2020/5/4 36 0.016853933 0.026186378 0.008830022 2020/5/5 37 -0.033149171 -0.00672204 -0.002188184 2020/5/6 38 -0.011428571 0.056676273 -0.012061404 2020/5/7 39 -0.01734104 0.002272727 0.012208657 2020/5/8 40 0.038235294 0.002192982 2020/5/11 41 0.002832861 -0.027210884 -0.004376368 2020/5/12 42 0.002824859 -0.067599068 -0.015384615 2020/5/13 43 -0.061971831 -0.0475 -0.006696429 2020/5/14 44 0.006006006 0.023622047 -0.005617978 2020/5/15 45 0.008955224 -0.046153846 -0.032768362 2020/5/18 46 0.035502959 -0.005376344 0.005841121 2020/5/19 47 0.008571429 0.035135135 0.016260163 2020/5/20