Good poems, Jia !
You spotted the weight loss drug marvelously a few months ago and everything was set up perfectly for speculation. However, there are some issues in execution in my opinion and I detail them below so that we could exchange ideas and better skills to lick the market.
ARNA and the two others are not difficult to analyze because there is really no information that can provide insight. This is great for speculation because no one has significant advantage (unlike in the case of MGM, BAC and ELN). However, there are obvious signs on ARNA that should be included in the decision making process.
1. Warrants Issuance
Any company that issues convertibles or warrants to raise fund indicates it is WEAK. ARNA allows 28M shares warrants at market price plus additional 5.6 M shares at market at the option of the investor. Adding together, it is equivalent to 34% of total 100 M shares outstanding !
This deal definitely puts a cap on ARNA's potential for appreciation in the short-run.
2. Valuation
After VVUS issued results, VVUS was valued at $800 M. For ARNA to rise above $10, ARNA has to be valued at close to $1.2 B. Given the BLOOM results, it is very difficult. For the price to rise to $12.50, total market cap has to be $1.5 B, almost double of that of VVUS.
At this point, sell $10 or $12.50 call could fetch about $0.50 and $0.30 per share, respectively.
In summary, the most difficult part of this activity is to find out ARNA, VVUS and EOS. The rest is relatively easy but one does need to have an estimate of overall valuation and the situation.
MGM is not hard to analyze except some effort is needed (like 1 day's work ...)