On the surface, GameStop's (GME.US) stunning $56 billion proposal to acquire eBay (EBAY.US) appears to offer substantial potential gains for investors willing to bet on this extraordinary deal. However, the reality is that merger professionals are largely skeptical. The acquisition plan, orchestrated by GameStop's chairman, billionaire Ryan Cohen, was officially announced on Monday. GameStop proposed buying eBay for $125 per share in a mix of cash and stock, representing a premium of approximately 20% over eBay's closing price last Friday. As of last Friday, GameStop's market capitalization was about $12 billion, while eBay is significantly larger, with a market value of around $46 billion. By Thursday, eBay's stock price was approximately $107, leaving a gap of about $18 compared to GameStop's offer. In fact, since the proposal was made public, this spread has continued to widen, indicating significant market doubt about the deal's prospects.

Under normal circumstances, arbitrage investors are often eager to bet on large mergers, but this particular transaction is shrouded in uncertainty, leading many professionals to steer clear. A critical issue is the severe lack of detailed transaction structure, making it difficult to establish arbitrage positions or calculate the probability of the deal's completion. Many market participants even suspect that Cohen's bid may have ulterior motives. Beyond a $20 billion debt financing commitment from TD Bank and GameStop's own cash reserves of approximately $9 billion, plus its 5% stake in eBay, there remains a substantial funding gap for the equity portion. Furthermore, TD Bank's financing commitment is not guaranteed. Even if the cash portion is secured, GameStop would need to issue a massive amount of new shares, potentially exceeding one billion. Rough estimates suggest such an issuance could triple the company's existing share count and might even exceed its current authorized share limit.

The acquisition's motives are under market scrutiny, with speculation that the true intent may not be a genuine merger but rather an unconventional attempt to boost GameStop's stock price. Merger arbitrageurs express doubt about whether eBay will even engage with the offer. Some market observers theorize that Cohen's move is not sincerely aimed at combining the companies but is instead designed to artificially inflate GameStop's share price. Matt Osowiecki, a portfolio manager at Water Island Capital LLC, stated, "While there is some business synergy logic between the two companies, the likelihood of reaching a final agreement is extremely low. If this deal were to proceed, it would effectively constitute a reverse merger. Convincing eBay shareholders of the value in holding GameStop stock would be immensely challenging."

To draw attention to the proposal, Cohen also staged a promotional stunt: listing several personal items, including a pair of socks, on eBay, claiming the proceeds would help fund the acquisition. This attracted dozens of bids totaling tens of thousands of dollars. Even if traders acknowledge the deal's underlying logic and valuation metrics, executing an arbitrage strategy is practically difficult. Typically, arbitrageurs buy shares of the target company and short shares of the acquirer based on specific deal terms. However, GameStop has not disclosed detailed per-share consideration or mentioned common stock merger safeguards like collars or caps. GameStop's unique market characteristics further complicate the transaction. The stock already has a high level of short interest, with short positions accounting for about 15% of its float, partly due to hedge fund arbitrage activities related to its two convertible bonds, which together total over $4 billion.

As a former meme stock darling, GameStop has experienced multiple short squeezes and maintains a large base of retail investor supporters. This significantly increases the cost and volatility risk of shorting the stock. Following the acquisition news, retail capital flowed into both GameStop and eBay, indicating strong interest from ordinary investors in the potential merger. According to data from Vanda Research, Monday saw the fifth-highest net buying volume by retail investors in GameStop over the past year. Louis Meyer, an event-driven strategist at Square Global Capital, stated bluntly, "This deal is completely outside the normal playbook. From a pure arbitrage perspective, it's quite challenging." However, Meyer also noted that Cohen is not a typical dealmaker or industry consolidator. He initially became involved with GameStop as an activist investor, ignited the retail trading frenzy during the pandemic, and later joined the company's management, consistently following an unconventional path. There is reasonable speculation that Cohen's true objective is to elevate GameStop's stock price, with the acquisition proposal merely serving as a means to that end.

Meyer added that eBay shareholders may now recognize the company's acquisition appeal, potentially leading them to seek other suitors. Alternatively, eBay could even consider making a counter-offer for GameStop. Currently, Cohen and GameStop are awaiting an official response from eBay, which is evaluating the unsolicited proposal. Until more details are disclosed and the deal's prospects become clearer, arbitrageurs see little reason to act hastily.