Wait, so for example hedge funds can buy aggregated data from BoA about how much is spent at Walmart on BoA CCs on a daily/weekly basis, wouldn't that data be v

Wait, so for example hedge funds can buy aggregated data from BoA about how much is spent at Walmart on BoA CCs on a daily/weekly basis, wouldn't that data be very valuable prior to an earning call/report, somewhat like insider trading (but I guess not technically?)?