ok im going to chime in here with some thoughts...
I haven't really posted in this thread before but I have posted in other threads and called scam when I saw it.
I've been investing in US stocks for more than 10 years so I have a fair idea of how to measure risk.
I have held two tiny (1K) positions in this stock since the IPO.. once before the BTCTC shut down and again after they started hashing.
Here are the reasons why I would not risk anything more than play money on this stock.
(this is just a summary for those who haven't had the time to follow this thread)
1) Fabrizzio Tatti (the founder) has been outed as a known scammer and he has even admitted that he posed as Sam Noi on IRC.
2) Itech Pro, the parent company supporting Labcoin, does not have an office.. the address points to an address in a building which is shared by dozens of other companies so for all intents and purposes it leads to nothing more than a PO box.
3) Howard Wang the lead (and only) chip designer testified how difficult and aloof and poorly organized the labcoin management were. He even states how they didnt even pay him properly.
4) there is no evidence of 65nm chips only 130nm chips.. 130nm is already obsolete (I am currently running a 65nm Butterfly labs single and I know it will be obsolete within a few months)
5) being so poorly organized none of the major fabs are taking Labcoin seriously (it would be extremely difficult for them to get a 28nm tape out even if they had a working design)
6) vast amounts of Money (BTC) has been shown to move from Labcoin to Just Dice (whether the money has been gambled or laundered is immaterial.. the mere fact that they are willing to move hundreds of thousands of dollars worth of shareholder money without shareholder approval is deeply concerning)
7) The current chips they have hashing are unstable. (the has rate has been moving between 600GH and 3TH up and down daily like a yoyo.. suggesting that there are Major problems with the chip design or overheating... (for what its worth my BFL rig has been running non stop for 3 weeks since I got it without a hitch).. and yet we do not even know if they are using their own chips or some store bought chips...
8 ) A blog post from the CEO of 796 (in chinese) (where I believe some Labcoin assets were supposed to be listed) seems to share the shareholder concerns that Labcoin management are an extremely aloof and shady.
here are some things that should give shareholders some comfort.
1) Labcoin are now hashing.. and paying dividends.. (I can confirm that they are paying dividends on havelock atleast)
2) the vast majority of shareholder money has not yet been spent... some 6000+ BTC have been shuffled around to various wallets. (most of it going to Just Dice apparently)
3) bitcoins ARE traceable and with enough ingenuity and diligence from the community we are able to see how the money is being moved and spent. (this will become evidence should this ever make it to trial)
4) china (and hong kong I believe) have much stricter laws against mass fraud. So if it does turn out to be a fraud scheme then at least the shareholders will be comforted knowing that Mr Tatti and/or Noi will be dealt with harshly by the law.
In summary I would say that at worst case this is an outright scam and best case it is a very poorly run and organised company run by amatuers who simply hired someone else to design their chips.. In my view they have very little chance of reaching their stated goals.. however with that said.. due to the nature of bitcoins traceability, I believe that there is a chance that those who still hold shares may get some money back from the IPO funds, once Sam realizes that it is virtually impossible launder that many bitcoins with so many people watching.
Just my 2c and a first time poster.. take it for what its worth....
here is howards deposition for anyone who has not read it.
http://www.reddit.com/r/Bitcoin/comments/1ntdxt/howard_wang_responds_to_qa_labcoin_is_a_scam/