I am confused about the following: I checked daily and weekly prices for Exxon (and also GE). But the values for Open, Low, High, Close, Vol., Adj. Close for both data streams seem to differ from each other.
Example (Exxon financial data via Finance Yahoo):
---Date ----------------- Close -------------- Close
Jan.19.1970 ----- 60.25 (weekly) ----- 61.87 (daily)
or
Sep.18.2014 ----- 95.78 (weekly) ----- 97.77 (daily)
On the eye it seems that the only value which is the same in both data streams is Open price.
Why is this? Normally I would suggest that it should be possible to convert a daily dataset into a monthly dataset.
Hope anyone can help to solve the confusion.
Cheers Peter