The emergency rescue of Bear Stearns Co Inc on Friday left observers from all quarters wondering who would be the last man standing at the Wall Street bank.

When a Bear Stearns analyst moved to ask a question at a biotechnology investor meeting, Genentech Chief Executive Arthur Levinson quipped, There's still somebody here from Bear? Let's give him a hand.

I'm still here, said Bear Stearns analyst Mark Schoenebaum. But pointing to a JPMorgan analyst, he said, I think I work for Geoff Meacham now.

The rescue by JPMorgan Chase & Co and the Federal Reserve Bank after Bear said its cash position had deteriorated sharply put the word takeover on the tip of tongues all over Wall Street, with JPMorgan seen as a leading contender to buy out Bear Stearns.

But while Bear's cheap stock price could attract some suitors keen to buy its mortgage finance and trading assets, its liquidity problems may prevent a deal from being consummated, analysts and bankers said.

Shares of Bear Stearns, the fifth largest U.S. investment bank which has been hard-hit by its heavy exposure to the faltering U.S. mortgage market, fell 45 percent, reducing its market value by $3.2 billion to $3.64 billion.

Bear Stearns Chief Executive Alan Schwartz said the company is working with Lazard Ltd. to examine its alternatives, but it will focus on protecting customers and maximizing shareholder value.

He said Bear's first-quarter earnings would meet Wall Street expectations.

CNBC reported that Bear Stearns is actively being shopped. While JPMorgan is the most likely suspect, CNBC said it was not the only company to receive a pitch to buy the company.

Our view is it would not be a surprise to see a merger announced over the weekend, said Andrew Brenner, senior vice president of MF Global in New York.

A person familiar with JPMorgan said the bank, which has previously expressed interest in expanding its prime brokerage business, is interested, at the right price, in buying the Bear division that provides loans and handles trades for hedge funds.

The concern for any buyer would be whether Bear Stearns has fully exposed all of its problems or if there is another debacle in the offing.

Looking from the outside you have to ask, Are they at the end of their troubles? That's a very difficult question, said Anthony Sabino, professor of law and business at St. John's University, in New York.

Bankers and analysts rattled off a list of potential suitors but suggested them with caution, saying it's unclear why any company would buy Bear Stearns when they could pursue stronger assets at other banks.

The question someone would ask if they were in a potential M&A position would be, Shouldn't we just go after the people? Bring the people in rather than by the firm, said Michael Holland, chairman of private investment firm Holland & Co.

In addition to JP Morgan, potential buyers include Merrill Lynch & Co Inc and foreign companies such as HSBC Holdings Plc, Barclays Plc and Royal Bank of Scotland Plc, some bankers and analysts said.

If you think about a company like Bear, they don't have hard assets, just computers, office space and people, and one would imagine that people at Bear are polishing up their resumes, said James Ellman, portfolio manager at Seacliff Capital in San Francisco.

That's how Wall Street works -- when a firm is in trouble, clients leave and your best employees leave. We've seen this story many times before, Ellman said.

Bear Stearns currently trades at 4.9-times fiscal 2008 earnings estimates, compared with the sector average of 18.5-times earnings.

In addition, foreign banks could face some regulatory problems that would add headaches to the purchase of an already ailing company, analysts said. And U.S. banks could try to buy the bank in pieces instead of as a whole, analysts said.

As far as who in the U.S. would look to take them over -- there are possibilities but I think every American outfit would say, 'We've got our own headaches', Sabino said.

Bear Stearns' problems emerged because it has more exposure to the U.S. bond markets than its competitors and has a large mortgage-backed securities business.

It's unclear whether Bear Stearns will be able to survive the run on the bank that Schwartz described if customers continue to flee and its businesses deteriorate further.

JPMorgan might buy it for a dollar. I mean you're going to get a good price. Ultimately you have to ascertain if the assets are worth more than the liabilities, Barish said.

Bears' cheap stock price might entice some suitors to take a risk in buying the firm, some investment bankers said. Just because someone wasn't interested at $120 might doesn't mean they wouldn't be interested at $34, said one head of investment banking at a U.S. brokerage firm. Bear Stearns now is under pressure to preserve what assets they have, protect their people, protect their clients.

They might be forced to sell at a price that would have been unthinkable before.