On the Periodic Table of Elements, the symbols Kr, Ne, He stand for krypton, neon, and helium, three of the so-called noble gases. Noble gases are chemically stable, and can be easily overlooked because they are colorless and odorless. They have boiling and melting points that are close together, meaning that they have a very narrow range of temperatures at which they are liquid. And noble gases have industrial applications in lighting, welding, and lasers.

On the New York Stock Exchange, KR, NE, and HE stand for Kroger, Noble, and Hawaiian Electric Industries. Do these companies exhibit similar characteristics of stability, a tendency to be overlooked, and scarce liquidity? Well, no analogy is perfect, especially one as arbitrary as this. But here's a look at these stocks nonetheless.

Cincinnati-based Kroger Co. (NYSE: KR) is the largest traditional grocery chain in the U.S. (though Wal-Mart is the largest seller of groceries). Kroger has more than 2,400 supermarkets under several different names, as well as more than 750 convenience stores.

What is up is the theme of this week's merger talk, because there is lots of chatter, but no bold moves. Yet.


NEW CENTURY FINANCIAL CORPORATION (NYSE: NEW)

Down the tubes, and then what? With bankruptcy imminent, what next happens to the nation's second largest sub prime mortgage banker? Shares continue to fall today, recently at $3.18, a 69 cent fall, equal to almost 18%. Just two months ago the share price was over $30. The real estate investment trust isn't getting any help from lenders. Maybe reorganization is just what they need.

PALM INC (NASDAQ: PALM), DELL INC (NASDAQ: DELL)

Or should it be Dell, Palm? Either way, Palm is looking to sell, and Dell is looking to buy. Palm knows Apple Inc's (NASDAQ: AAPL) iPhone can really hit them with a number of body blows, hence, get out while the getting's good, or at least okay, seems to be the Palm plan. For Dell, they're looking at smart phones as a part of their consumer products future. And lord knows they have the cash to buy a Palm. It's a brand with international contacts and a retail distribution network. Let the bidding begin, say at $2B?

NOBLE DRILLING CORP (NYSE: NE)

A noble "no" to an LBO was sent out from high atop the corporate structure several weeks ago, but rumors keep a coming. Yes, they said they'd use their extra dough to buy their own stock, just like they did before, in 2006. And that's what they've been doing. Who knows, maybe there's nothing to it.


CLAIRE'S STORES INC (NYSE: CLE)

Private equity firm Apax seems to be in the lead to take the 3,000 stores-strong Claire's. Get this: Apax is said to be so anxious to get going that it's said they have new management "in waiting." Wow. Claire's has said it's exploring "strategic alternatives", including a sale. Goldman Sachs is helping. Must be serious stuff. By the way, same store sales were up but down recently. Up 1%, but 2.3% was expected. What do you think Apax feeds that management team in waiting, anyway?

ALLTEL CORPORATION (NYSE: AT)

Buy me, please. That's what the nation's fifth largest wireless operator (subscribers) has been saying. AT&T is kicking the tires, but because of antitrust and other issues, it may only be doing just that. Verizon Communications Inc (NYSE: VZ) may have a look-see, as well as private equity firms. Tepid seems to have been the response so far, but that can change quickly. Management says the rumors are nothing new. Is that a bad thing?

Long-time writer for Barron's, Jonathan Laing, takes an deep-dive on the shares of Barnes & Noble, Inc. (NYSE:BKS).

Books are dead, right? It's all about the Internet?

Maybe. But Laing thinks BN is an ideal candidate for a buyout.

Despite a nice rally in stocks, Barnes & Noble has been a laggard. Other problems: analysts are lukewarm on the stock; Amazon.com is a threat; there is slowing consumer spending; and there is also stock option backdating concerns.

However, smart money is moving into the stock, such as from the hedge fund Pershing Square. It holds about 8% of the Barnes & Noble.

Pershing's superstar investor, Bill Ackman, likes Barnes & Noble because: the aging population bodes well for books; BN has a massive superstore footprint, which provides a Starbucks-like social experience; there is little inventory risk (because books can be returned to the publisher); and the brand is very powerful.

Also, Barnes & Noble has taken steps to restructure the cost structure and boost cash flows, offering more high-margin products (such as wrapping paper), and providing self-publishing services.

And, with no debt -- as well as the strong cash flows -- Barnes & Noble would certainly make for an attractive leverage buyout from a private equity group.

Actually, there may not be any need for private equity financing. Given the company's balance sheet and the founding family's equity stake, the deal could be done completely with debt financing.

Tom Taulli is the author of various books, including the Complete M&A Handbook and operates InvestorOffering.com.