Stock price when the opinion was issued
Basically the NASDAQ 100. Acts as a benchmark for a lot of people like himself. Extremely liquid. Trade, rather than invest. Top was around $550, and he thinks it will probably take out those highs before the end of the year.
Based on the look of the chart, he'd write calls against it with a strike of around $530-540. This way, you collect some premiums. If you don't want to get taken out, just keep rolling the strike price up.
It’s a tech play. It’s got some biotech in there as well and a few other sectors, and consumer discretionary as well. You want to take advantage of the NASDAQ at this time of the year from December 15th until January 23rd as it tends to perform well and outperform the S&P 500.