Quote from: mjangler on May 09, 2015, 07:10:31 PM

Quote from: sangaman on May 08, 2015, 05:42:29 PM

I wanted to share some feedback for potential improvements to the site. I've e-mailed about these before but I'm not sure I got a firm response.

1) The volume stats on the site are consistently way off. Often times the all time volume will read X whereas my own trading activity may greatly exceed X for that contract. It would be nice to have accurate and more detailed volume statistics. Something like a historical volume chart (the way we have historical price) would be very helpful and informative. It would also be nice to know at any time the total number of outstanding shares for a given contract.

2) I believe Predictious is still calculating margin requirements on a per-ccontract basis for the most part. For example if I'm short 10 shares of Joe Shmoe to win the 2016 US Presidential Election, there shouldn't be any additional margin requirements for me to offer to go short 10 shares of a different candidate (lets say Jane Doe). Only one candidate can win the 2016 election, so only one of my short positions can result in a loss. Currently, it seems that margin requirements go up in this case. Optimizing the margin requirements calculations to that it results in the lowest margin requirements possible would be a big improvement,, and would allow users to make more predictions with less money. That's a win-win. I realize this introduces some complexity to the trading engine but I think it would be a greatly valuable feature.

I've enjoyed Predictious and I hope these suggestions are taken into account and that the site continues to grow and improve.

I agree that point #2 is a very important issue. If you could resolve this I think volume on your site would double or more. I personally would increase my volume quite a bit.

Yes I'd increase my volume and order sizes as well, particularly on markets where there will be exactly 1 winner out of a number of possibilities. That describes most of the most active contracts I think - Oscars, election winners, sport championship winners, etc... When trading relative longshots, lets say i'm selling a contract at 0.5 mɃ, it sucks to have to tie up 9.5 mɃ for potentially months at a time for a relatively small payout. This is even more extreme when it's 9.8 or 9.9 to win 0.2 or 0.1. I realize that margin requirements need to be enforced, but they should be minimized where possible.