> Best thing to do to prevent this unfair advantage is releasing publicly available CC spend data.
Who releases it? Every credit card company? At what frequency?
What if one of the nightly bulk loads into the transaction data warehouse fails with an integrity error, alerts the DWH team, is picked up by a junior person because of a staffing anomaly, who forces it through, and then the next day's data release is off by a couple of million, but the automated trading bots and manual trading desks don't know this, so they trade on this new signal...
Who releases it? Every credit card company? At what frequency?
What if one of the nightly bulk loads into the transaction data warehouse fails with an integrity error, alerts the DWH team, is picked up by a junior person because of a staffing anomaly, who forces it through, and then the next day's data release is off by a couple of million, but the automated trading bots and manual trading desks don't know this, so they trade on this new signal...
....I'm sure you see where I'm going with that.