The "macro" side of behavioral finance involves getting inside the heads of other investors to take advantage of the irrational decisions that people tend to make with their investments.
I posted an article to stockcharts.com regarding "Round Number Bias", which is the tendency for stocks to gravitate to big round numbers such as 10 and 100. In this case, we looked at Alphabet (GOOGL) and Amazon.com (AMZN) and the importance of the $1000 level.
You can read further at stockcharts.com.
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