Bad data on the HYG ETF close
Yahoo today (1/31/18) says the close on HYG was 87.30, up .19. If so, the 1/30 close should be 87.11. But the historical prices page says the 1/30/18 close was 87.15. If the ETF was up .19, then the 1/31 close should be 87.34. That's what the Historical price page says. But there's more, Yahoo says the ETF is up 0.05 after hours to $87.35. But if the close was 87.34, the after-hours change should be 0.01. What are the correct data?
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