[notouch]

You make a good point weiwei. There are 2 reasons why tape reading may not be very reliable. The first is that as weiwei says it can be manipulated. You just as often see large orders at the end or middle of a big move as you do at the beginning. Some big players may have limit orders below 12500 for example, sell just above 12500 and then absorb the stops that get triggered. The other problem is that there aren't that many big players who trade YM. Most people who tape read follow the methods of Hubert from TTM but according to him a large order is any order above 10. Medium sized retail traders can easily trade lots of 10-50. Just because an order is over 10 doesn't mean it's institutional. If you want to see what the big players are up to you need to look at the ES tape where it's not unusual to see 500 lots coming though (equivalent to 1000 YM contracts). So the trades highlighted by Yigal could just be a few retail traders.