The beginning time of day (America/New_York) in the form "HHmmSS" (leave blank for all day).
endFilterTime
The ending time of day (America/New_York) in the form "HHmmSS" (leave blank for all day).
tz
The timezone code (defaults to "America/New_York").
Value
An xts time-series object with High, Low, Open, Close, and Volume bars
over the requested interval.
Details
A basic attempt is made to interpret the date/time values. One may
very explicitly specify the date/time parameters in the following
format: "CCCC-MM-dd HH:mm:SS" and by specifying the tz parameter.