wbj
That's a common misconception. The register date (fri) is irrelevant for getting the div purposes. You have to own the share AFTER the close of business the day BEFORE the ex-div day to get div. So if ex-div is wed, you have to own them Tues evening, so you could buy them 4.29pm on Tues, sell them 08.01am On Wed and get the div. The register date comes into it because the company pays the div to the people on the register, and then brokers adjust for any transactions they know about that happened in the few days prior to the register date that would cause the register to be wrong. There's an extra piece of bureacracy involved, but it seems to work fine and its all automatic, so PIs don't need to do anything.
Cheers