There probably was a fund that needed to go out of business. That is often done on this date. They should be finished - done selling because their last order was an odd number and was filled. By watching an extended order book screen the entries and sales were managed by a small market marker. I follow hedge activity and their buying and selling patterns on investments that I own.
PETS has a clean balance sheet with no debt. They have free cash flow of about 3 dollars per share. They have buys from respectable analysts. In a recent study, sales are increasing from city dwellers who can't get out and about. Sales are also increasing from those who prefer to use the internet (their site) to buy. If you order stuff from them it can be seen that sales are increasing by comparing order numbers.