S&P 500 price levels to trade

[rimshot]

traders know that over the decades:

the QQQ needs to see topping confirmation price action before
SPY heads back down in earnest

* bulls need the $NDX & QQQ to hug the daily 200,2
upper Bollinger Band for a period of consecutive weeks

* the % change for QQQ and $NDX starts with the end of 2014,
and the current QQQ high of +78.12% change is marked with a green horizontal line

* Note - the ratio of QQQ to SPY price action sits at a new
multi-year high ... mutual funds and ETF's have investing $'s
concentrated in an increasingly smaller number of stocks

https://stockcharts.com/h-sc/ui?s=%24NDX&p=D&st=2014-12-31&id=p40944534636&a=485600689