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Tech Talk
Each month in this
Journal, our technical support staff addresses issues of interest to many CSI
subscribers in a question-and-answer format.
Notice:
The views and information expressed
in this document reflect the opinions and experience of the author Robert C.
Pelletier. Neither CSI nor the author undertake or intend to provide tax
advice or trading advice in any market or endorse any outside individual or
firm. All recommendations are provided for their informational value
only. Readers should consult competent financial advisors or outside
counsel before making any software purchase or investment decision. CSI
does not stand behind or endorse the products of any outside firms.
Copyright (c) 2001 Commodity Systems Inc.
(CSI). All rights are reserved.
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Questions and Answers
Q.
When I started using Unfair Advantage (UA), the installation
process required that I store a series of programs from ActiveState on my
drive. As I recall, they had something to do with the Perl programming
language. I noticed that those screens were not included when my colleague
began using UA a few days ago. Why the difference? Can he still use Perl?
A.
Not to worry! UA version 4.2 still supports Perl for custom
programming through the charting module and through MarketScanner.T To ease
installation, we now include a public domain version of Perl with the UA
executable installation. Your colleague's UA version sports a number of changes
like this that simplify various processes. Please visit the CSI website
for more information on upgrading your software.
Q.
How did the chaos of September 11th affect my UA database?
A.
Despite the unprecedented events of September 11th, the
American financial system performed remarkably well and actual chaos was
averted. Most exchanges were closed for just two days following the terrorist
attacks, but the U.S. stock exchanges did not reopen until September 17th. Each
day of closure is recorded as a "holiday" in your CSI data files. Those data
sets that were missed due to late postings in the aftermath have already been
updated through UA's remote correction process. If you were unable to download
due to problems with your local server, all missing days were automatically
supplied upon your first successful access. We know of no latent problems that
would require database replacement or additional downloads.
Q.
My UA stock charts show a gap in trading from September 11
through September 14th. While this accurately reflects what happened, I wonder
if I can display the data without a gap. Is there a way to hide the break?
A.
Not in your UA charts. However, when building an ASCII file,
you'll have the choice of converting "holiday" data into zeros, duplicates of
the previous day or the previous close, or to simply reserve a null day. These
options might be useful for custom or third-party analysis.
Q.
I'm looking at a price bar on a UA chart that is like none I
have ever seen before. The "close" hash mark is all by itself above the price
bar. Is this an error?
A.
Probably not, but please report any suspicious data point to
our technical support staff (techsupport@csidata.com) for confirmation.
What you are seeing is more likely an out-of-range settlement. An inherent
trait of the commodity clearing process is that some inactive contracts
(primarily mercantile) are subject to settlement by committee -- sometimes at
values outside of the day's trading range. This allows the exchange to keep all
contracts appropriately priced regardless of variations in liquidity. Whenever
a contract is "settled" outside of its trading range, an atypical price bar is
produced that includes a gap between the vertical range indicator and the
closing tick. Many software programs, UA included, can chart out-of-range
closes (actually settlements) with no problem, but others cannot.
If your third-party analysis software can't handle out-of-range
closes or if you do not wish to use this type of data in your analysis, you can
edit your portfolio settings to eliminate them. Here's how: First select the
desired portfolio from the Portfolio Manager panel. Then click the "Edit"
portfolio button. Go to the Rounding/Ranging tab and select from "As published"
(can include out-of-range data), "Modify High/Low" (expands the range to
include the settlement) and "Modify Close" (adjusts the close to be within the
range). In all cases, the UA database retains the actual values. Your choice
here affects only data presentation for UA charts and export files listed in
the selected portfolio. The same option is available for Non-Portfolio Chart
Options.
Q.
The Columbus Day prices for many of my foreign currency contracts
seem to be repeats of the previous day's close. What's going on?
A.
A procedural convention adopted by the Chicago Mercantile
Exchange does indeed call for some repeated prices on October 8th (Columbus
Day). The affected contracts are the CME's foreign currency, E-Mini and FX
markets. The lead December 2001 contracts on Globex for the currencies and FX
markets traded, and in all or nearly all cases, prices reported were marginally
higher. All further distant contracts did not trade.
In the absence of market data for the farther out contracts,
the exchange repeated the close from the previous Friday as the official close
for Monday. The volume reports shown for the distant contracts beyond December
for these markets were for "out-trades." The CME's official policy is to repeat
the settlement of the prior trading day, leaving us with no choice but to post
the data as they released it.
UA customers can manually override the nominal settlements,
but such an override could be lost when installing a future new release.
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