With the introduction of cross matching in the In Play horse markets I thought I'd check what difference it has made to the price movements.
Here's a couple of screen shots from recent markets, these are typical of the pre and post cross matching markets that I have recorded. I can't remember if I've changed refresh rates or range since the charts on the left were taken, but they should be fairly similar.
| Pre cross matching | | With cross matching |
 | |  |
 | |  |
There is a lot more noise and variation in the prices on the right (with cross matching) and it's harder to see what is happening from the chart. I suspect that a few bots might be having problems, either by reacting to too many false moves and/or failing to generate effective false moves which will be lost in the noise...
It's probably side lined one of my potential strategies which (after having spent a month or so analysing it) now has less chance of working. But never mind, there's plenty of markets and opportunities.
It also makes my manual in play strategy harder to read, so I need to re assess that as well .
I guess if you are just placing a bet it means you have more chance of getting matched, but will it effect the liquidity if some of the previous strategies stop working and less money gets put into the market?
I'm sure Betfair are taking a nice increase in profits at the moment, but will that drop if they kill too many edges and people stop putting money in... I actually doubt that it will as people will just adapt and find new ways to profit from the changes in the market.
Maybe the way to go for now is to just stick 2 bets in a few ticks either side of recent average LTP and hope for the best...