Volume data incorrect

[mschlesinger19]

Hey, great module but I'm seeing some data incosistencies:

Noticed it with AAPL and DIS that the volume data is incorrect.

Attached is a screenshot of DIS volume and below is the code snippet returned for history:

              Open    High     Low   Close    Volume  Dividends  Stock Splits
Date
2019-09-03  135.56  135.61  134.26  135.50   5997400        0.0             0
2019-09-04  135.93  137.38  135.58  137.07   4285400        0.0             0
2019-09-05  138.09  138.44  137.50  138.01   5143500        0.0             0
2019-09-06  138.30  138.98  137.43  138.72   4090000        0.0             0
2019-09-09  138.75  139.25  137.66  138.00   5458700        0.0             0
...            ...     ...     ...     ...       ...        ...           ...
2020-05-04  102.01  103.83  100.55  103.18  19514800        0.0             0
2020-05-05  101.51  105.18  100.90  101.06  30169800        0.0             0
2020-05-06  101.48  105.27   98.86  100.88  51992400        0.0             0
2020-05-07  101.85  105.61  101.83  105.57  20868800        0.0             0
2020-05-08  109.05  109.18  106.63  109.16  24079700        0.0             0

[sfavorite]

I just checked and downloaded data matches yahoo finance page.

[jeffreyrdcs]

I notice the same as well. The price is correct in most cases, but the volume returned by yfinance is occasionally multiply by 10-100 times. Here a log of a 15-day volume checking script I was using. The stock being checked is CROX.

Mon Aug 16 16:23:09 2021 [1234500 691700 902700 743300 611200 710600 847700 807900 883000
764000]
Mon Aug 16 16:33:55 2021 [1234500 691700 902700 743300 611200 710600 847700 807900 883000
764000]
Mon Aug 16 16:43:22 2021 [ 1234500 691700 90270000 74330000 61120000 71060000 84770000 80790000
88300000 76400000]
Mon Aug 16 16:53:32 2021 [ 1234500 691700 90270000 74330000 61120000 71060000 84770000 80790000
88300000 76400000]
Mon Aug 16 16:56:01 2021 [ 1234500 691700 90270000 74330000 61120000 71060000 84770000 80790000
88300000 76400000]

Suddenly the volume became 100 times larger (or smaller) than it should be for the last 8 days. And it continues to give me the same volume until I kill the script.

P.S. I am pretty sure the problem comes from the yahoo finance servers. I checked the historical data of CROX, it shows 76400000 on my screen, then I refresh it 15mins later it becomes 764000.

Here's a screenshot.

If PLTR has 18,928,720,000 volume in a day last week, I think it would worth 10x of its current price ...