Sorry this is so long, but:
Iâve spent quite a bit of time with this product, though not as a trader. I have worked for two firms as a techie and have supported Aqtor directly and with considerable assistance from Actantâs support staff. Despite this experience, I must qualify the following by saying that Iâm certainly not the most knowledgeable person with regard to Aqtor. Also, things change, and rather rapidly: what I say here may no longer apply. Itâs been about 3 weeks since I was working with it.
Aqtor from Actant is probably the best OTF (off-the-shelf) options quoting platform for single user/workstation, independent or at least autonomous traders (this might not be the best thing for a highly centralized trading operation). The app runs on a single piece of hardware, itâs fairly efficient, it has a well-designed interface, it runs reasonably well over Citrix (i.e. itâs easy to distribute) and itâs the only quoting application, with the exception of ORC Liquidator (which as itâs own issues apparently), with a legitimate, robust scripting/programmatic automation facility.
There are some caveats here, however. Aqtor runs on a single workstation. Iâve worked with other systems that are highly distributed and therefore have more inherent flexibility (and complexity) in their design. For instance, at the CBOE, a single instance of Aqtor can make one connection to Hybrid via the exchangeâs proprietary CMI interface (CBOE Member InterfaceâCORBA, robust and verbose, though at times this latter quality can be problematic). This means there is a 1-to-1 association between Aqtors and badges: one Aqtor can log in with one badge and a badge can log in from only one Aqtor (the latter restriction per the exchangeâs interface requirement). Other apps may be architected (ORC?) in such a way that this is not a limitation (i.e you can have quotes coming from more than one instance of quoting software and more than one physical person/trader going out the door to the CBOE on one badge). I donât know if this is a limitation at other exchanges (Itâs not at the PCX, the ISE allows multiple instance logins).
Depending on implementation, Aqtor has an upper limit to the number of âaverageâ (whatever that means) stocks it can run. With the hardware the CBOE provides (dual 3 GHz Xeon, 1-2 GB of RAM), this means somewhere in the neighborhood of 35-45 stocks. The actual number depends on a lot of factors, a discussion of which is beyond this post. One single stock like GOOG can kill the app even if you are only running a reasonable number of symbols already, but Actant has made some upgrades (versions 3.57.1832.64 and above, I believe) that address these problems (screen/GUI refresh on data updates, primarily). With this limitation and the above, there is an upper limit to the number of stocks that you can trade on the CBOE at a time using Aqtor with a given badge. If you want to trade more than that, you need another seat and account (as an RMM, or eDPM, etc.) I know guys that are trading more than 70 stocks on the CBOE with multiple badges. There are guys on the PCX trading several times that with several Aqtors (PCX will let you log into the exchange system with more than one instance.)
Part of this upper limit issue, and performance issues with Aqtor, are the result of using the Aqtor Portfolio Server (an unfortunately troubled application that is the cause of most of the day-to-day problems with Aqtor). Basically, this app manages positions and sends them to Aqtor. Though this sounds relatively simple, for the purpose of P&L calculations, every individual trade record is maintained for the life of a given portfolio. This, and the fact that the app uses a much less than ideal RDBMS for this kind of circumstance (SQL Anywhere), causes Aqtor to slow down considerably. Running Aqtor without the Portfolio Server improves performance and enables you to trade more symbols. It also makes Aqtor somewhat more reliable.
Aqtorâs interface is pretty slick; a lot of traders like it, as do I. Itâs highly customizable and very information dense. Despite this, itâs also very demanding of desktop real estate and itâs very right-click intensive (a lot of context menus). Thereâs also a fairly steep learning curve with it and some of the application behavior may not be fully documented and may not be intuitive (Iâm thinking of the facilities used to roll the date ahead and to calculate decay according to a customized schedule here). All of these limitations can be overcome, however. It just takes time, trial and error.
Dantes indicated that it does not work for futures and futures options. This was more true previously than it is now, but heâs correct in saying that there were issues here. I recall that there were some futures pricing anomalies due to a theoretically incorrect consideration of interest rates and dividends/distributions; Iâve also heard users note that Aqtor can produce erroneous R/C values particularly for high delta options. This may have been inaccurate information or these issues may have been resolved. I havenât heard of any problems like these in the last year and a half. At the very least, it is possible to compensate for them in practice: nearly all of the traders I worked with preferred using Aqtor for pricing and risk over other alternatives. Aqtor has made it possible to price using a future as the underlying. There currently are traders in the DIA and DJX pit using Aqtor; some guys in the MNX are using it as well. There are a number of firms using it to quote One Chicago. I believe there are guys using it at the CBOT and the Merc. I'm not certain what products you can trade with Aqtor there.
If you have questions or are interested in a demo, Iâd suggest calling their Chicago helpdesk #: 312.577.0300 and ask. Niall Blehein or Tim OâMeara should be able to help. These two guys and Mike Walsh are very good starting points. Bear in mind that, though these guys do everything they can to service clients, they are unfortunately overworked.
Iâd be curious as to what youâd want to do with it. I suspect that its appropriateness would be highly dependent on the intended purpose. If you are primarily looking to take as opposed to make markets, you might be better served (or accommodated just as well) with an alternative like MicroHedge with a suitable plug-in such as ScriptedEdge.