Hi,
I recently added the symbol XLG (SP500 top 50) to investigate using it for my portfolio. This particular symbol has had some recent changes that I believe should affect the adjusted close value stored in the _XLG file. Three changes in particular:
1. 2023-7-17 there was a reverse 10/1 split
2. 2023-6-20 dividend, $0.93623 (before the split)
3. 2023-3-20 dividend, $0.97573 (before the split)
Going backwards in time the data file _XLG handles the 10/1 split just fine for the closing price. The 2023-6-20 dividend looks correctly handled as well since I believe the stated value would be affected by the 10/1 split (0.93623/10). The 2023-3-20 dividend looks like it is the full amount and not adjusted by the 10/1 split, yet the close price is adjusted for the 10/1 split. So the 2023-3-20 dividend has a large effect on closing price.
This is just based on my looking at raw data from EOD, the _XLG, and a charting tool I use. So please help me understand if I do not have this correct. Thanks.