If a market maker wants to accumulate a large amount of a stock in one trading day, that market maker may actually not report any of the trades that occurred until the trading day has ended so as not to alert the market to the collection.
$0.0003 125,000 OTO 15:22:45 $0.0003 650,000 OTO 12:35:35
$0.0003 1,000,000 OTO 12:34:07 $0.0003 1,000,000 OTO 12:34:07
$0.0003 239,000 OTO 12:32:58 $0.0003 500,000 OTO 12:32:03
$0.0003 1,000,000 OTO 12:30:37 $0.0003 4,000,000 OTO 12:28:53 $0.0003 4,000,000 OTO 12:28:53 $0.0003 500,000 OTO 12:25:06 $0.0003 1,500,000 OTO 12:20:59
$0.0003 10,200 OTO 12:12:38 $0.0003 73,333 OTO 12:12:37 $0.0003 539,800 OTO 12:12:34 $0.0003 950,000 OTO 12:09:18
$0.0003 4,050,000 OTO 12:09:05 $0.0003 2,000,000 OTO 12:09:04 $0.0003 4,950,000 OTO 12:08:58 $0.0003 3,300,000 OTO 12:08:56
$0.0003 500,000 OTO 12:00:00 $0.0004 700,000 OTO 11:54:46