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I use TS 8.1 and Interactive's TWS. I see many price ticks on TS 8.1 for
various stocks, in the after hours market every day, that are not quoted on
my Interactive Trader Workstation. I find this sometimes confusing and
would sure like to know what's going on.
Ron
----- Original Message -----
From: "robert pisani" <r.pisani@xxxxxxx>
To: <omega-list@xxxxxxxxxx>
Sent: Saturday, September 15, 2007 10:27 AM
Subject: bad data from TradeStation
This was sent to TradeStation Data Integrity --
I have opened an equities trading account at TradeStation
Securities. Although it is currently just a modest account, my intention
was to add substantial funds to this account after checking its behavior.
However, I have recently encountered a problem that would prevent me from
using this account at all.
At the open on 9/6/07 TradeStation data had PTMK show some
spurious low ticks, around $12.01, but they were incorrect ticks --
both eSignal and Fidelity both showed a low for that day of $12.59. On
checking the tick chart, one sees that it wasn't just a single tick, but
several ticks. Further, TradeStation data on the open on 9/7/07 and on
the open at 9/10/07 also show spurious ticks.
These do not appear to be isolated problems. If you look daily
chart of PTMK, you will see problem data on 9/17/07. 8/20/07, 8/22/07,
9/6/07, and 9/7/07, and possibly elsewhere not obvious except on a tick
chart.
I can't seem to get a response from TradeStation. Can someone
tell me if TradeStation Securities has any safeguards against trades based
upon clearly incorrect data?
In particular, if I had held a long position in PTMK on 9/6/08,
and I had placed a sell stop at around $12.47, would TradeStation
Securities brokerage have stopped me out (at around the $12.01 level)
because of TradeStation's incorrect data?
Bob Pisani
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