I think he is saying that some people may try to convince others to develop systems in their platform with the objective of profiting from them. I think Quantopian advertises this openly and promises a cut. They are sincere about it. The question is how long the edge if any will last when the algo is shared by commercials.
He didn't say that. Here's exactly what he said, "Why using any vendor to develop or sell a system if it works? Just trade it yourself with money from relatives and make everyone rich. The rest are excuses for snake oil."
IMO Quantopian is a legit operation and quite interesting. I follow the PAL blog among several others and Mike Harris has joined Quantocracy and he has also added capability to his software for generating code to use there. There is interesting discussion in the forum. I do not think there is need to worry about someone stealing your code and investors will not have access to code and I also think they are not interested in the codes, they only want profit.
The financial technology sector has a real issue with IP protection especially when it comes to trading algorithms that aren't exposed to the market and not easily patented. Can Trading Technologies see your algos via their ADL platform?
You get what you pay for. Quantopian also fails to be able to product Tick bars....which are essential IMHO for short-term automated trading. I think their most granual bar is a 1 minute bar.
You are correct, no tick bars. I checked again after a while and documentation has improved significantly. Still without tick bars their fill model produces much better backtests than when using higher granularity that is common. Also I noticed the platform is gaining popularity among some well-known traders. E.G. Mike Harris updated his PAL software to generate code for Quantopian and he has an example in his blog. After reading the article some of the advantages became clearer. I think i will start spending some time there.
Thanks Patrick, that just adds to the excitement I already have about your product which I hope to start using shortly.