I am looking at the stock PDN (Paladin Energy) on ASX (Australia Stock Exchange), and I am trying to determine the lowest price traded on the date 2020.03.23 (YYYY.MM.DD). Should not be such a difficult task, eh?
So, lets ask Yahoo Finance, which provides a low price for the day of 0.0350. Ok.
Does the actual exchange itself agree? No. It says 0.034.
Screenshot of the chart on ASX
But it gets weirder. Looking up the symbol on TradingView, it initially agrees with Yahoo: 0.035.
But then, try this: In TradingView, open the symbol "ASX:PDN*1000". This creates a synthetic chart where all prices are multiplied by 1000:
TradingView PDN chart, prices multiplied by 1000
The low of the day on this chart: 34.245. Divide this by 1000 and you get 0.34245
Does anyone have any idea what is going on here? My conjecture is that old prices gets backadjusted when the tick size increases, obscuring the actual traded prices in the past, by rounding them off. But can this really be true? It would be a pity to ruin the precision of historical data in that way.
Any suggestions? What was the real, actually traded low price of that fine day of 2020.03.23?