I'd just like to say that the reason I created Seed-DB (http://www.seed-db.com) is because the world of seed accelerators should be more transparent. I've currently got a list of 170+ accelerators around the world, and the list makes it pretty clear which ones get results and which don't. (Or don't care enough about publicizing results).
If you have any feedback for me as to what would be useful to you when choosing between accelerators, please let me know. Email is in profile.
How do you update that list? I'm familiar with a few of the lesser known accelerators on it and I'm aware of some pretty nice exits they've had, but their exit column is listed as $0 on your list.
This is probably complicated by the fact that many of the smaller acquisitions (<$100m) are for undisclosed sums. Not sure how you can ever account for that unless you make wild guesses.
Also it looks like companies which are very valuable but not formally exited yet (AirBNB, Dropbox etc.) aren't accounted for here... a column for "current portfolio valuation" might be more valuable. Again, if it were ever possible to put such a thing together accurately, which I doubt.
There are a couple of different lists. The first is the list of accelerators, which I update as soon as I learn about a new accelerator. (Often I add it before they've funded any companies.)
The next list is the list of startups for each accelerator. This is a pretty manual process, though I do give admin permission to accelerators to go in and add their startups themselves. I suspect for the accelerator you're thinking either a) I don't have their full list of startups and/or b) the startups that have exited aren't marked as such on Crunchbase.
You're correct that for many acquisitions I do have to make guesses about exit value; I clearly mark each exit value on Seed-DB with a H/M/L icon to indicate my level of confidence in the value. (Where people have come to me afterward my guesses have been roughly 50/50 over/under.)
I've got some ideas about calculating a valuation, but even if I put that together I would likely not make it public since it's just guesses multiplied by guesses. Plus, there are companies that just buck trends in trying to guess valuation based on funding signals... my favorite example here is Weebly. They went for 4 years on ~$600k of funding before raising a monster $45million round.
This is an amazing resource! Working at an accelerator, I know it is very important that both sides are transparent with each other to make sure the program/session is effective and enjoyable.
I'd like to make it easier for founders to "claim" their startup on Seed-DB, which would lead to the ability for them to privately rate their accelerator and their VCs/Angels if they've received funding.
I'm not sure how many startups would do that, though... it's surprising to me how many startups from accelerators don't even have a Crunchbase or an Angellist page. Seed-DB is a nights/weekends project for me and I've already got a backlog of stuff I want to add. :)
If you have any feedback for me as to what would be useful to you when choosing between accelerators, please let me know. Email is in profile.