QQQ 2023 monthly intra-month close volatility (Yahoo Finance)
Source URL: https://query1.finance.yahoo.com/v8/finance/chart/QQQ?period1=1672531200&period2=1704067200&interval=1d&events=history&includeAdjustedClose=true
Data field used: indicators.quote[0].close (daily close prices).
Volatility formula: |monthly_high_close - monthly_low_close| / monthly_high_close * 100.
Percentages rounded to two decimals.

Chronological monthly highs/lows and volatility:
Month,High Date,High Close,Low Date,Low Close,Volatility %
2023-01,2023-01-27,296.26,2023-01-05,261.58,11.71%
2023-02,2023-02-02,311.72,2023-02-24,291.85,6.37%
2023-03,2023-03-31,320.93,2023-03-10,288.55,10.09%
2023-04,2023-04-28,322.56,2023-04-25,309.99,3.90%
2023-05,2023-05-30,349.98,2023-05-04,316.17,9.66%
2023-06,2023-06-15,370.26,2023-06-07,348.82,5.79%
2023-07,2023-07-18,385.74,2023-07-07,366.24,5.06%
2023-08,2023-08-01,382.79,2023-08-18,358.13,6.44%
2023-09,2023-09-05,378.07,2023-09-26,354.21,6.31%
2023-10,2023-10-11,371.22,2023-10-26,343.66,7.42%
2023-11,2023-11-20,390.74,2023-11-01,356.96,8.65%
2023-12,2023-12-27,411.50,2023-12-06,385.05,6.43%

Sorted by volatility (highest to lowest):
Rank,Month,Volatility %,High Close,Low Close
1,2023-01,11.71%,296.26,261.58
2,2023-03,10.09%,320.93,288.55
3,2023-05,9.66%,349.98,316.17
4,2023-11,8.65%,390.74,356.96
5,2023-10,7.42%,371.22,343.66
6,2023-08,6.44%,382.79,358.13
7,2023-12,6.43%,411.50,385.05
8,2023-02,6.37%,311.72,291.85
9,2023-09,6.31%,378.07,354.21
10,2023-06,5.79%,370.26,348.82
11,2023-07,5.06%,385.74,366.24
12,2023-04,3.90%,322.56,309.99