I am looking for the formula to retrieve how long a ETF has been trading; the number of bars in it’s history.
I tried:
$TradingBars = LoopMax("Eval(Close(CTR) = NA, CTR, 0)",12,0,252)
But when I run an ETF screen with the rule
$TradingBars = 0
I get 729 ETFs. This sounds too high. Just picking the first one one the list; AAXJ, iShares MSCI All Country Asia ex Japan ETF, we can tell that this formula is incorrect because AAXJ has price data going back for years.
So, what’s going on?