Hello
Well Latent prices are prices that basically are out of date. Let me try and explain.
With the best will in the world, from the mighty Citi Bank all the way down to your local green grocer, if they put prices out over the internet then there will be a delay from the price leaving their price engine or distributor to it showing up on your screen, you dealing on it and then it going all the way back to be confirmed.
This usually takes microseconds and all companies do everything they can to make this delay as tiny as possible.
However there are instances, sometimes due to Geography, ie living in New Zealand and dealing with a company in London, or having a poor or slow internet (broadband) connection which cause this microsecond delay to become larger.
Also over big numbers, like Unemployment numbers or retail sales for example, with the massive increase of price updates over a small amount of time this can slow down the speed in which price updates occur, again only fractionally, but it adds up.
Some people do deal when figures come out hoping to catch a move, and there is nothing wrong with that. It is when you are dealing deliberately on a wrong or latent price that there becomes an issue.
What some people try and do is take advantage of this. They may have another price feed from a more local source, or one which is indicative only, but faster. They can compare the two either manually or usually they automate it, and if they see a price discrepancy then they attempt to deal on the wrong price.
Some people call this arbitrage, but it is not really. It is an attempt to deliberately deal on a price that is latent, due to the reasons mentioned above.
This phenomenon does not affect 99% of clients. However there is a small minority who specialise in it, and invariably they get found out, and if that is all they are trying to do then the trading company/brokers do not like it, as the client is not trading or even trying to trade on a correct price.
It is only to be expected that in any industry you will always get people ‘trying it on’ and it is always a battle to distinguish between those and the majority of people who trade normally.
Regards
SLM