I generally use Google throughout the day to track the price of stocks. I understand there can be minor discrepancies between sources based on the time the data is collected and how it is displayed but the discrepancy pictured below I cannot seem to understand.
On the left is the price ticker for the day from Google and as you can see there is a large spike around 10:30AM. I assumed this was from a large volume market order being filled. To check I went to Fidelity's site but found no such volume or spike on their chart.
What is the cause of this?