There's never a shortage of losers in the stock market.

Let's take a closer look at five of this past week's biggest sinkers.

Company	Sep. 30	Weekly Loss	My Watchlist
Eastman Kodak (NYS: EK)	$0.78	(67%)	Add
Imperial Holdings (NYS: IFT)	$2.40	(63%)	Add
iSoftStone Holdings (NYS: ISS)	$6.49	(34%)	Add
Tudou (NAS: TUDO)	$13.65	(25%)	Add
Micron Technology (NAS: MU)	$5.04	(24%)	Add

Source: Barron's.

If a picture is worth a thousand words, is it also worth 11 chapters in bankruptcy court? Kodak got pounded on Friday on fears that it would be filing for bankruptcy. The photofinishing pioneer had tapped a credit line earlier in the week.

Imperial Holdings tanked after its office was raided by the FBI. Imperial deals in the secondary market for life insurance policies and structured legal settlements.

iSoftStone Holdings was one of the market's biggest winners three weeks ago, but the Chinese provider of IT took its lumps this time around. There was no material news out of iSoftStone specifically, though investors generally soured on Chinese equities after it was revealed that the Justice Department was starting to probe accounting fraud allegations in U.S.-listed Chinese companies.

Chinese video-sharing website Tudou took a hit after social networking speedster Renren (NYS: RENN) acquired Tudou rival 56.com. Renren's ownership should boost 56.com's exposure, threatening Tudou's market leadership position.

Finally, Micron Technology slipped after posting disappointing quarterly results. Weakness in the traditional desktop and laptop markets is crushing the chip behemoth. It posted a loss in its latest quarter, surprising analysts that were targeting a profit.

It was a rough week for these five stocks. Let's see if they bounce back.

At the time this article was published Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.Longtime Fool contributor Rick Munarriz calls them as he sees them. He does not own shares in any of the stocks in this story. Rick is also part of the Rule Breakers newsletter research team, seeking out tomorrow's ultimate growth stocks a day early.

Copyright (C) 1995 - 2011 The Motley Fool, LLC. All rights reserved. The Motley Fool has a disclosure policy.

If the line at your local Whole Foods Market (NAS: WFM) is a little longer than usual over the next few days, don't blame it on a surge in popularity of soymilk or organic cherries.

LivingSocial's national deal -- offering $20 worth of Whole Foods Market groceries for $10 -- was a hit Tuesday, selling out of its million vouchers several hours before the sale was slated to end.

We'll never know if the deal would have topped the 1.3 million Amazon.com (NAS: AMZN) vouchers that it sold at a similar price break back in January, but it would have been close if LivingSocial and Whole Foods hadn't capped the offer at a million coupons.

Premium groceries aren't a niche that consumers typically expect with half-priced offers. Folks who shop at Whole Foods Market or Fresh Market (NYS: TFM) know they will be paying up for choice edibles.

This deal seemed more about upping LivingSocial's prestige than traffic at Whole Foods' 308 stores, as I argued yesterday. I'm not feeling any differently now, even if I underestimated the initial demand.

Regardless of how LivingSocial and Whole Foods are splitting the proceeds, the social coupon website will now be able to show other upscale retailers that if even a classy outfit like Whole Foods Market can play along, why not them?

It hasn't been an easy sell in the past, largely because participating merchants are typically collecting about a quarter on the dollar for every voucher sold. Selling $20 worth of merchandise for $10 -- and then letting Groupon or LivingSocial keep roughly half of the proceeds from the $10 vouchers -- is a hard sell for sellers of hard goods. Social coupons have an easier time swaying restaurant and spa operators who have healthier margins to play with.

Whole Foods Market isn't the only established retailer to go this route. Groupon's aha moment came last summer when it sold 441,000 $50 Gap (NYS: GPS) vouchers for $25 last summer. These are the deals that the media ultimately remembers, and not the 243 vouchers for a suburban Portland cantina that sold yesterday.

Will a million folks heading to an organic grocery superstore during the next three months be enough to give this once-hot investing niche its mojo back? We'll see. Groupon called off its investor road show earlier this month, but a million deal seekers clicking the "buy" button at a smaller rival prove that there's still life here.

If you want to follow the organic grocer to see how it fares after this deal, a dd Whole Foods Market to My Watchlist.

At the time this article was published Longtime Fool contributor Rick Munarriz calls them as he sees them. He does not own shares in any of the stocks in this story. Rick is also part of the Rule Breakers newsletter research team, seeking out tomorrow's ultimate growth stocks a day early.

Copyright (C) 1995 - 2011 The Motley Fool, LLC. All rights reserved. The Motley Fool has a disclosure policy.