The market went bananas yesterday, jumping 245 points or almost 2%, after Europe's finance minister Mario Draghi promised to fix everything wrong with the eurozone through an unlimited bond-buying program. Or, as the folks at Zero Hedge inform us, Pierpont Securities has termed it "classic banana republic banking." So don't expect the good times to last.

Yet some stocks were even more "eur-phoric" than the market, rising by double-digit percentages. But resist the urge to high-five everyone in the cubicles next to you. Smart investors won't celebrate until they know why their stock surged, because without a fundamental basis for the bounce, these stocks could just as quickly make the return trip down.

A house divided
I'll admit to being one of those who believes the giddiness in the housing sector is premature, that there are still far too many houses in inventory that will keep it depressed for some time to come. But mortgage insurer Radian Group (NYS: RDN) published delinquency data suggesting that the situation is on the mend. While its delinquent loans did drop more than 2% in August, falling to less than 95,000 loans from 97,000 at the start of the month, I'm not convinced the data was enough to warrant a 22% spike in its stock yesterday.


Mortgage insurers like Radian, MGIC Investment, and Genworth Financial are still struggling to recover from the housing debacle and both MGIC and Genworth have risk-to-capital ratios in excess of the statutory maximum 25-to-1 ratio. Radian says that while its ratio declined to 21-to-1 as of June 30, it expects to exceed the cap later this year, so even though its delinquent loan numbers are improving, it's not going to be enough to salvage the situation.

Moreover, the number of delinquencies being solved through cures is on the rise again. A cure is when a loan returns to on-time payment status, and Radian recently admitted that many of its cures are achieved through loan modification programs. Loan mods tend to have large numbers of redefaults occur, and according to the latest data, 9% of all homeowners redefaulted on their loans in July -- only slightly better than the 10% that did so in June.

Radian's stock is up 73% in 2012 and has more than doubled from its lows. Considering that the industry is still weaker than it appears and that the gains it's made are based on ephemeral support, I'm rating Radian Group to underperform the market on Motley Fool CAPS, but you can tell me in the comments section below if you think the mortgage insurer has a firm foundation to build upon.

Big wheels keep on turning
Having capitulated to the EPA's demands over its emissions technology, trucking giant Navistar International (NYS: NAV) said it's back on the road to profitability and is conducting a strategic review of all its non-core operations to better sustain its business. Its shares soared 17% on the improved performance.

Unlike PACCAR and OshKosh -- which use EPA-approved technology to get past tough, new air quality regulations -- Navistar had long challenged the agency that its cheaper alternative should be accepted, but it was forced to cave in as sales plummeted as it became apparent truckers didn't want non-compliant vehicles.

Although GAAP earnings were $84 million, or $1.22 per share, adjusted results showed losses of $1.63 per share, worse than the year-ago period and below analyst expectations. Still the hope is that with a new management team, a new focus on improving sales, and Carl Icahn still buying company stock, it's believed the trucker can turn this big rig around. Let me know in the comments section below if you think Navistar International will end up jack-knifing on the road to recovery.

Because I said so
An analyst at Credit Suisse says investors are too enthusiastic in their belief the anti-obesity market will enjoy multiple winners, but if there is going to be one, Orexigen Therapeutics (NAS: OREX) has to be considered. When and if its fat-fighting drug Contrave is approved and brought to market sometime in 2014, it should grab a good portion of what's estimated to grow to a $3.5 billion industry by 2020. On such lofty expectations, that market sent Orexigen's stock almost 17% higher.

No doubt that comes as a big shock to investors at Arena Pharmaceuticals (NAS: ARNA) , which already gained FDA approval for its weight-loss therapy Belviq, particularly as Credit Suisse rated it to underperform.

The analyst says the market can barely sustain one blockbuster treatment, let alone three (VIVUS (NAS: VVUS) also made it through the regulatory labyrinth with Qsymia, and Credit Suisse gives it the thumbs-up). Yet it is curious that a drug that hasn't been approved and won't be for at least two years gets a better profile than a pharmaceutical with a therapy already hitting the market. I still think Arena is the better bet here, but explain to me below in the comments box why Orexigen Therapeutics will come out on top despite being late to the race.

Whoa, Nelly!
If you're interested in investing in revolutionary obesity treatments, make sure to check out our in-depth coverage of Arena Pharmaceuticals in this brand new premium research report. Complete with a year's worth of updates, this report will give you the investing edge you need, along with a full year of updates! Click here to get your copy.

The article 3 Winners That Trounced Market "Eur-phoria" originally appeared on Fool.com.

Fool contributor Rich Duprey holds no position in any company mentioned. Click here to see his holdings and a short bio. Motley Fool newsletter services have recommended buying shares of PACCAR. The Motley Fool has a disclosure policy. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. Try any of our Foolish newsletter services free for 30 days.

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kangrui

Radian said it realized a $120 million after-tax gain on securities in its investment portfolio. Considering RDN's market capitalization is just over $500 million, the impact of this should is a main reason for the sudden surge. at the same time, a lot of short interests are being affected by the news and with the stock gaining momentum, a short squeeze will carry the shares higher.

September 07 2012 at 11:31 PM Report abuse rate up rate down Reply