Very good observations. The stock market truly is like a sports book. The reason teh sports betting line moves after the initial line is posted is because bettors use their knowledge to determine which of the posted lines offers the best chance of a win. Same thing with trading stocks. There are actually ways to "effectively" measure sentiment. And sentiment is the main factor that determines price. The goal is to pick out the setups that offer you the best odds of a win. Sometimes the sentiment gets skeeewed so heavily to one side that the casino is actually "daring" you to take the other side of the trade...that's how good the odds of victory can swing to your favor. the number one rule of trading of course is to stay off of the $5 blackjack tables as that is "likely" where kyriacos (and the rest of the crowd who knock the benefits of sound technical analysis) will be found. ALWAYS go to the $25 minimum table when playing blackjack. At least there your chances are "decent" that everyone at the table won't be just "wingin it." :-)