Really? How is a block out of a DP of 1,000,000 AAPL changing hands at 145.65, that was reported 24 hours late, assisting you in your analysis? A smart investor. Bought, a smart investor sold. Was it traded closer to the bid or offer price? You can't possibly know because you don't have access to that particular dark pool quote. And anyway, information of whether a trade was executed nearer the bid or offer has proven futile long time ago, whether in individual trades or in aggregate.