Question: From September 04, 2021 to March 21, 2022, what is Visa Inc.'s Sharpe Ratio? (Default risk-free rate is 0; annualized (US standard uses arithmetic mean return); 252 trading days per year) Using unadjusted prices, write down the indicator formula, collect the raw data, calculate the answer, and keep four decimal places. Please list the raw data and key calculation process.
Formula: SR = (AnnRet - rf) / (\sigma(r) * \sqrt{252})
Data:
date,close
2021-09-03,225.1100006103516
2021-09-07,226.2700042724609
2021-09-08,229.08999633789065
2021-09-09,227.4900054931641
2021-09-10,224.91000366210935
2021-09-13,224.6300048828125
2021-09-14,223.02999877929688
2021-09-15,223.80999755859372
2021-09-16,224.3300018310547
2021-09-17,221.75
2021-09-20,220.0500030517578
2021-09-21,220.1699981689453
2021-09-22,222.75
2021-09-23,228.30999755859372
2021-09-24,231.58999633789065
2021-09-27,229.6000061035156
2021-09-28,225.55999755859372
2021-09-29,226.67999267578125
2021-09-30,222.75
2021-10-01,230.4600067138672
2021-10-04,224.72999572753903
2021-10-05,224.27999877929688
2021-10-06,226.50999450683597
2021-10-07,230.5500030517578
2021-10-08,230.2700042724609
2021-10-11,225.1100006103516
2021-10-12,224.0500030517578
2021-10-13,222.4600067138672
2021-10-14,225.17999267578125
2021-10-15,230.9900054931641
2021-10-18,230.6499938964844
2021-10-19,233.5200042724609
2021-10-20,231.4199981689453
2021-10-21,230.2400054931641
2021-10-22,231.22999572753903
2021-10-25,233.8800048828125
2021-10-26,231.82000732421875
2021-10-27,215.77999877929688
2021-10-28,209.83999633789065
2021-10-29,211.7700042724609
2021-11-01,212.4600067138672
2021-11-02,209.13999938964844
2021-11-03,208.1000061035156
2021-11-04,208.77999877929688
2021-11-05,216.6699981689453
2021-11-08,220.4900054931641
2021-11-09,213.38999938964844
2021-11-10,215.55999755859372
2021-11-11,210.4199981689453
2021-11-12,212.08999633789065
2021-11-15,212.3000030517578
2021-11-16,215.17999267578125
2021-11-17,205.05999755859372
2021-11-18,203.3300018310547
2021-11-19,200.8600006103516
2021-11-22,195.5800018310547
2021-11-23,198.4900054931641
2021-11-24,203.25
2021-11-26,197.6499938964844
2021-11-29,196.2899932861328
2021-11-30,193.7700042724609
2021-12-01,190.16000366210935
2021-12-02,198.2899932861328
2021-12-03,196.32000732421875
2021-12-06,202.67999267578125
2021-12-07,207.3699951171875
2021-12-08,208.9900054931641
2021-12-09,211.38999938964844
2021-12-10,213.3999938964844
2021-12-13,211.0200042724609
2021-12-14,209.97999572753903
2021-12-15,212.30999755859372
2021-12-16,214.3699951171875
2021-12-17,211.8800048828125
2021-12-20,208.7400054931641
2021-12-21,215.3800048828125
2021-12-22,217.9600067138672
2021-12-23,216.6199951171875
2021-12-27,217.6300048828125
2021-12-28,218.0500030517578
2021-12-29,218.1699981689453
2021-12-30,217.8699951171875
2021-12-31,216.7100067138672
2022-01-03,221.42999267578125
2022-01-04,222.4600067138672
2022-01-05,220.0
2022-01-06,219.75
2022-01-07,216.9600067138672
2022-01-10,211.97000122070312
2022-01-11,214.3800048828125
2022-01-12,215.7100067138672
2022-01-13,215.0
2022-01-14,214.6699981689453
2022-01-18,215.7100067138672
2022-01-19,214.67999267578125
2022-01-20,214.3500061035156
2022-01-21,205.92999267578125
2022-01-24,201.8500061035156
2022-01-25,202.0
2022-01-26,205.8699951171875
2022-01-27,206.1499938964844
2022-01-28,228.0
2022-01-31,226.1699981689453
2022-02-01,232.3600006103516
2022-02-02,235.4199981689453
2022-02-03,231.5399932861328
2022-02-04,228.38999938964844
2022-02-07,227.16000366210935
2022-02-08,227.94000244140625
2022-02-09,230.8699951171875
2022-02-10,225.58999633789065
2022-02-11,224.69000244140625
2022-02-14,225.33999633789065
2022-02-15,227.82000732421875
2022-02-16,228.82000732421875
2022-02-17,224.6100006103516
2022-02-18,222.69000244140625
2022-02-22,221.32000732421875
2022-02-23,215.9499969482422
2022-02-24,217.3000030517578
2022-02-25,219.2700042724609
2022-02-28,216.1199951171875
2022-03-01,208.97000122070312
2022-03-02,208.47999572753903
2022-03-03,207.22999572753903
2022-03-04,200.2899932861328
2022-03-07,190.6999969482422
2022-03-08,191.7100067138672
2022-03-09,199.75999450683597
2022-03-10,197.97000122070312
2022-03-11,196.7100067138672
2022-03-14,200.3300018310547
2022-03-15,206.13999938964844
2022-03-16,211.8699951171875
2022-03-17,213.4499969482422
2022-03-18,219.1100006103516
2022-03-21,217.0399932861328

Indicator data:
Answer: -0.0531