I’ve been doing some research on merger arbitrage oppunities lately and think that its an interesting thing to talk about. Those of you in Investments 4502 at Carleton will have seen this, but essentially, it has been found that when an offer is made for a target company at a premium, that company’s stock price will not fully rise to the amount of the offer. This is because there is an inherant risk of the merger not being totally completed. So, an announcement is made for a certain premium on a certain date, a fraction of the premium will be represented in the subsequent day’s opening. As the merger is completed, the premium is fulfilled.
The underlying strategy for merger arbitrage is to go long on the targets share after the annoucement is made hoping that the merger is consumated. An investor could also short the acquierer since historically speaking, the acquirer’s stock deflates in the event of a tender offer. There are also variations of this strategy that indicate at what weights an investor should engage each position long or short. Also, there is a method of indication on which company an investor should long or short in all stock mergers (out of the scope of this post).
Either way, I’ve done some work to validate these findings and low and behold, it works! Mind you I’ve only taken ten samples from the past six months to show this (although, doing i in the last six months may show that the results are immune to systematic events). But either way its interesting. All of the return papers I’ve read this week all suggest that there is an excess monthtly return to be made.
The question is then, why doesn’t everyone do it? My answer is, I don’t know! Obviously this is not a riskless arbitrage as it can be argued that there is no such thing; this may scare some people into diving in. I also don’t think that many investment students have had the opportunity to study mergers in depth.
Here’s a video from Bloomberg TV that gives a good example of this strategy
Also, there’s a site on Reuter’s that show’s arbitrage spreads. This is the difference between a target company’s stock price after annoncement and the deal price. It is said the the larger the spread, the lower the probability that the merger will take place however, the greater reward an arbitrager will reap if the merger is completed. Risk and return right!?
http://www.reuters.com/finance/deals/arbitrageSpreads
Anyways, I don’t think merger arbitrage is too goo to be true at all! Its a strategy that seems legitimate. Just remember that it may be a good idea to read up on merger completion probabilities before you think about trying this. A better understanding of that, the better chance that you’ll be able to profit overall!