The Journal of Finance, I believe, had an article several 7 or 8 years ago that showed that it took about 3 years for an 'edge' to become marginalized. The author showed the publication of several trading system/approaches and the profits before and after the publication.
Long Term Capital Mgmt's early success was copied by other funds and started to eat into LTCMs profits. (Many LTCM experts on this forum, am I incorrect here?)
If you look at the history of gambling edges such as 'card counting'. As soon as there is any success with a technique followed by discovery of the edge, the edge is gone or at least harder to exploit.
"Would you share a trading idea?"
I think you must handle a 'true competitive edge' (which can be verified, tested, and exploited) against a 'market observation/belief/opinion'.
I would not share an edge I worked hard to produce; always glad to share an observation/belief/opinion. Sure, why not?
Long Term Capital Mgmt's early success was copied by other funds and started to eat into LTCMs profits. (Many LTCM experts on this forum, am I incorrect here?)
If you look at the history of gambling edges such as 'card counting'. As soon as there is any success with a technique followed by discovery of the edge, the edge is gone or at least harder to exploit.
"Would you share a trading idea?"
I think you must handle a 'true competitive edge' (which can be verified, tested, and exploited) against a 'market observation/belief/opinion'.
I would not share an edge I worked hard to produce; always glad to share an observation/belief/opinion. Sure, why not?

