I hope this clears things out. If you still have any questions please don't hesitate to ask, but keep in mind that although I love to explains things to people who insult us during my few breaks I have between days and nights of working my ass off to make a better exchange, my patience has some limits
Perhaps you have your operational reasons for changing the Bitstamp option, but as a trader, I quickly realised that to take advantage of the Bitfinex lower trading fees with my stop loss orders, I had to risk losing the house on them if I wanted them to have a good chance of not them not being triggered by 'Bitfinex market noise'. Since I started placing my stop orders to be triggered with the Bitstamp price, I could trade much more effectively and reliably. Without this option and having witnessed a margin call go against me in quite an astonishing manner (price being bid up whilst Stamp retreated fast, evaporating Ask walls), right at the top of yesterdays market. I no longer feel that i can trade with confidence on Bitfinex. I am a novice trader and understand very little about the ways in which bots can be deployed to manipulate price action and harvest profitable stop loss orders, but I do know when the rub of the green is going heavily against me. All i can do in these situations is decide not to play anymore.
I also don't get your comment about the more money your traders make, the more they trade on your exchange. The winners can only win as much as the losers lose. The house get's their fee's all the same whether it is from shark bot operators or from Honest John Muggins.
P.S. The fact that Ask/Bid walls can be piled up to immense heights even if the trader who created them only has margin enough to buy or sell a small fraction of the wall he has created, is something that I am very sure is heavily exploited by shark Bitfinex traders and something you may want to address.
Hello,
Yes bots/traders can try to guess and trigger stop levels, however they do not access our stop orders and open positions data (this is a serious accusation that you're making). This is unfortunately true in any market and hard to circumvent.
Considering yesterday top, the top was 829 on Bitfinex, and 827.38 on Bitstamp (0.195% less). This does compute with integrated Bitstamp fees, and suggest there was not "over top" problem.
For my comment about winners and losers, every one does not have the same goal. We also have an exchange part, where people come to buy or sell bitcoins and withdraw that, and they act as a counterparty to margin traders without being qualified as losers. And there is also the counterpart of Bitstamp (which could be the "losing" counterparty of Bitfinex winners).
In any case, I wish you find an exchange that suits you, and my best regards
Raphael