I am looking for a free source of historical daily data of the number of outstanding units of ETFs and ETNs. On a Bloomberg, this would be "VXX.SO Index HP" or something like that.

Does anyone know of any?

  • $\begingroup$ Probably should be community wiki as this is a question with many possible answers $\endgroup$
    – chollida
    Commented Apr 2, 2015 at 20:28

1 Answer 1


Many funds, that manage ETFs provide this on their webpages. E.g. SDPR (SPY, XL* family) has is in "NAV history" xls file on https://www.spdrs.com/product/fund.seam?ticker=SPY


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