Re: FinancialData errors
- To: mathgroup at smc.vnet.net
- Subject: [mg120581] Re: FinancialData errors
- From: DrMajorBob <btreat1 at austin.rr.com>
- Date: Sat, 30 Jul 2011 05:59:19 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <201107222344.TAA28525@smc.vnet.net> <j0fos4$8p6$1@smc.vnet.net>
- Reply-to: drmajorbob at yahoo.com
Thank you. I had already seen the page you sent, and had also discovered the following: FinancialData[ "JANFX", #, {{2011, 2, 10}, {2011, 2, 10}}] & /@ {"Close", "High", "Low", "Open", "Price", "Range", "RawClose", "RawHigh", "RawLow", "RawOpen", "RawRange"} {{{{2011, 2, 10}, 10.23}}, {{{2011, 2, 10}, 10.23}}, {{{2011, 2, 10}, 10.23}}, {{{2011, 2, 10}, 10.23}}, {{{2011, 2, 10}, 10.23}}, {{{2011, 2, 10}, {10.23, 10.23}}}, {{{2011, 2, 10}, 10.36}}, {{{2011, 2, 10}, 10.36}}, {{{2011, 2, 10}, 10.36}}, {{{2011, 2, 10}, 10.36}}, {{{2011, 2, 10}, {10.36, 10.36}}}} where the "Raw" numbers appear to be what I want. Bobby On Fri, 29 Jul 2011 10:06:18 -0500, James Stein <mathgroup at stein.org> wrote: > You purchased shares at 10.36, which WAS the "closing" price for that > day. > (Note to PierPaolo: Mutual Funds, unlike stocks, do NOT trade DURING the > day). > > The 10.23 price reported by Yahoo is an "adjusted" price. When a fund or > stock makes a distribution (typically dividends or capital gains), all > historical prices are "adjusted" downward in order that ROI between two > dates is consistent. JANFX distributes dividends at the end of every > month. > Check out this URL: > <http://finance.yahoo.com/q/hp?s=JANFX&a=01&b=10&c11&d=02&e&f11&g=d >> > > Note that both "Close" and "Adj Close" are available, and if you check > Mathematica's documentation you can learn how to obtain the former. The > adjusted prices are the defaults. > > On Fri, Jul 29, 2011 at 1:42 AM, DrMajorBob <btreat1 at austin.rr.com> > wrote: > >> I've found a new (to me) species of error in FinancialData. >> >> One example is the price of the following stock on Feb 10, 2011: >> >> s = "JANFX"; >> FinancialData["JANFX", "Name"] >> FinancialData["JANFX", {{2011, 2, 9}, {2011, 2, 11}}] >> >> "Janus Flexible Bond Fund D Shar" >> >> {{{2011, 2, 9}, 10.25}, {{2011, 2, 10}, 10.23}, {{2011, 2, 11}, >> 10.24}} >> >> As you see, FinancialData says the price was 10.23. >> >> But I BOUGHT the stock through Janus Funds on that day, and the price >> was >> 10.36. >> >> Moreover, if I go to Yahoo's interactive price chart for the stock at >> the >> following page, 10.36 is the price I find: >> >> >> http://finance.yahoo.com/echarts?s=JANFX+Interactive#chart3:symbol=janfx;range=ytd;indicator=volume;charttype=line;crosshair=on;ohlcvalues=0;logscale=on;source=undefined >> >> So... where are the errors really coming from? >> >> This is not an astronomically large price or a Missing["Not Available"] >> price; it's within 2% of the correct price. But it's wrong. >> >> These errors make it very difficult to trust FinancialData for any >> useful >> purpose. >> >> Bobby >> >> -- >> DrMajorBob at yahoo.com >> >> -- DrMajorBob at yahoo.com
- References:
- Re: FinancialData still broken
- From: DANA DELOUIS <dana.del@gmail.com>
- Re: FinancialData still broken