Post #3760 by lizgdal on the Mechanical Investing board

Investment Strategies / Mechanical Investing

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But does anyone know how Nasdaq NHNL works prior to the existence of the Nasdaq exchange?

step0 in [NHNLDiff] filters the exchange. Before 19731217, step0 passes all stocks (because 3==3). After 19731217, step0 filters to NASDAQ stocks.

step0:
if [Mkt Date] < 19731217:
TRUE
else
[Exchange] == NASDAQ

https://gtr1.net/2013/?lf-1lp-1h1::iflt%28linear%2...

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