|
PureBytes Links
Trading Reference Links
|
Hi MM,
For securities that are no longer trading we move them to a ?holding area?
that is away from the normal securities database.
For users that subscribe to our delisted historical data (which goes back to
1950) we change the symbol of the delisted security to represent its
delisting date (e.g. Enron eventually delisted as ENRNQ in November 2004, so
its symbol is ENRNQ-200411). By changing the symbol we avoid symbol
overlaps. Symbol overlaps are important with a delisted database ? For
example, the symbols AB, CDS, CSA, ENT and SEM have each been used 6 times
since 1950.
There were 48 securities delisted today on the US markets so this is quite a
common event. I'd say there are an average of 15 securities each day that
are delisted.
Further issues remain with respect to annotations on charts within AmiBroker
and symbol changes. This is due, in part, to the way that AmiBroker uses
the traded code as the sole identifier for a security. Internally we use a
unique numerical identifier which never changes even if a security changes
its code, exchange or listed status. It would be great to work with Tomasz
to enhance the AmiBroker chart database structure to provide a more robust
method for matching securities on the basis of an identifier rather than the
code.
Best regards,
Richard Dale.
Norgate Investor Services
- Premium quality Stock, Futures and Foreign Exchange Data for
markets in Australia, Asia, Canada, Europe, UK & USA -
www.premiumdata.net
From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf
Of marketmonk777
Sent: Wednesday, 4 June 2008 11:09 AM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Re: JimSwindle> US STOCKS DATABASE UPDATE
Richard,
How do you handle stocks that are no longer trading? I mean how do
you notify your customer base? Or do you just remove it from their
hard drives?
As I mentioned earlier I use to use TC2005 (prior to finding
Amibroker) and was using the chart notes feature to "log" all of my
trades. What I discovered was that the Wordens would automatically
remove dead symbols and therefore I would not be able to retrieve
those notes and charts. That got me a little tweaked.
Regards,
MM
------------------------------------
Please note that this group is for discussion between users only.
To get support from AmiBroker please send an e-mail directly to
SUPPORT {at} amibroker.com
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
For other support material please check also:
http://www.amibroker.com/support.html
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/amibroker/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:amibroker-digest@xxxxxxxxxxxxxxx
mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|