From: Jopsy Pendragon
I can't say it was legal or illegal.. it was just that placing a sell order for +25% of the current stock price wasn't accepted by their system.
Considering the year was 2000... it was quite likely that you could see a spike in stock value of 30% or more within a month on some stocks.
I can add to that a bit I think.
I do not trade US Stock with a US Broker but through a UK Broker with direct access to US Markets, with of course the necessary US authorisation re tax. So I cannot speak for actual US stock trade limits except I think the NYSE still may be using what they call "open outcry" to trade, the NASDAQ and Arch are electronic settlement I believe.
However in the UK most shares down though the FT100/250 and some other smaller cap stock including more recently AIM shares is electronic. You need to look at a live "sets" book to understand how it works, BUT it is similar to the LindexX book although with many refinements including the ability to see posted prices of both buyers, sells (and if you are clever you can spot the Market Makers together with bots)
I digress.... but on "sets" if you try to trade a price more than 5% above the last "best" buy or sell price you trigger an automatic auction process. What happens then is by a combination of the Volume Weighted Average Price and the new offered buy or sell, a new price is set which you trade from.
The point I am making is that the system prevents (to a degree) efforts to "move" the market to you own short term advantage although again like anything else it can be circumvented (legally and not legally).
The only exception to this is what they call "witching day and "triple witching day", which is connected with options expiry and is on the 3rd Friday of each month and quarter when the rules may be suspended. In the UK that might be for half an hour sometime between 10am and 11am (in the morning GMT time)
The reason for this slightly off topic post though is to point out Linden could do their necessary research on such a system and implement it with the Linden Dollar Exchange. It would not prevent a long-term trend BUT it may help to stop individual people getting shafted on one off trades. Just a view of course.
Finally for anybody else reading this who well understands how this system works, I have ignored the open and close auction process and other various FSA/LSE rules together with uptick/downtick US rules regarding shorting. This post is just designed as an overview to demonstrate a controlled process to trade in a semi live, and live market.
Ah yes an afterthough....would some of the larger Linden Dollar holders welcome a means of hedging their LInden Dollar holdings by either buying or selling covered warrents on the Linden Dollar.....hmm that is in idea as it might help liquidity