Ivanhoe Mines (NYSE: IVN) was broadly lower Wednesday after mining giant Rio Tinto (NYSE: RTP) boosted its stake in the company from 9.9% to 19.7%. Rio Tinto raised its interest in Ivanhoe by purchasing 46.3 million common shares for $388 million. The proceeds will be used to help build and commission Ivanhoe's Oyu Tolgoi project in Mongolia.

Thanks to the capital infusion, Ivanhoe now has roughly $610 million in cash on its balance sheet. However, traders are hardly cheering the news -- perhaps because Rio Tinto snapped up the stock at a bargain price of $8.38 per share, representing a steep discount to Tuesday's closing price of $11.51.

Analyst upgrades:

• UBS upgraded Apple (NASDAQ: AAPL) to Buy from Neutral and raised its target to $265 from $170, citing higher iPhone expectations, new partnerships, and likely upward revisions to Street estimates driven by gross margins.
• Wells Fargo upgraded Comcast (NASDAQ: CMCSA) to Outperform from Market Perform. The firm views a possible deal between end General Electric's (NYSE: GE) NBC Universal positively, as it thinks NBC will provide higher-margin growth for Comcast.
• Janney Montgomery upgraded Michael Baker (AMEX: BKR) to Buy from Neutral after the company completed the sale of its Energy business. The firm raised its target on shares to $46 from $40.
• Jefferies assumed coverage of Endo Pharma (NASDAQ: ENDP) and upgraded the stock to Buy from Hold. The firm cites valuation, a strong base business, and solid cash flow for the upgrade, and has a $30 target price on shares.
• Marten Transport (NASDAQ: MRTN) was upgraded to Overweight from Equal Weight at Stephens.
• U.S. Bancorp (NYSE: USB) was upgraded to Outperform from Market Perform at Keefe Bruyette.

Early this morning, Rio Tinto (NYSE: RTP) found itself facing new allegations in the arrest of some of its employees in China. RTP is accused of overcharging Chinese steel mills by $100 million during the past six years, and the latest accusations cover the sale of iron ore.

To catch you up on the situation between RTP and the Chinese government, back in early July, RTP was accused of bribing officials and four of its employees were detained by authorities in Shanghai on suspicion of stealing state secrets. The allegations contended that the four employees bribed executives from 16 of China's major steel mills in order to obtain industry information.

It was reported on Sunday, June 21, that Anglo-Swiss mining company Xstrata has proposed a merger of equals to the board of Anglo American ADR (NASDAQ: AAUK), hoping to create a new, more competitive mining giant. Rumors have been milling about for a while.

Together, Anglo American and Xstrata would have a market capitalization of approximately $68 billion, (AAUK's $35 billion + XTA.L's $33 billion) and be larger than Rio Tinto plc ADS (NYSE: RTP), which ended the trading day last Friday with a capitalization hovering over $42 billion.

Rio Tinto (NYSE: RTP - option chain) stock is declining this morning on reports that Chinese authorities could use a new antitrust law to block the company's planned joint venture with BHP Billiton (NYSE: BHP). If you think this stock won't be rising too far in the coming months, then it could be a good time to look at a bearish hedged play on RTP.

This morning, RTP opened at $193.00. So far today the stock has hit a low of $188.52 and a high of $194.00. As of 11:45, RTP is trading at $190.15, down $14.29 (-7.0%). The chart for RTP looks neutral and S&P gives RTP a neutral 3 STARS (out of 5) hold ranking.

Nucor (NYSE: NUE - option chain) shares are rising today after iron-ore miner Rio Tinto (NYSE: RTP) agreed to cut its iron ore prices for Japan's Nippon Steel Corp by more than 30%. The steelmakers have already been driven lower as demand for their product has slowed, but now they are less likely to be charged boom-time prices for their raw materials on top of that. If you think that the stock won't fall by too much in the coming months, then now could be a good time to look at a bullish hedged trade on NUE.

NUE opened this morning at $39.44. So far today the stock has hit a low of $39.14 and a high of $41.41. As of 11:35, NUE is trading at $41.25 up 1.16 (2.9%). The chart for NUE looks bearish and S&P gives NUE a negative 2 STARS (out of 5) sell ranking.

Analyst upgrades:

• Jefferies upgraded Aruba Networks (NASDAQ: ARUN) to Buy from Hold following the company's Q3 results to reflect improved visibility. The firm raised its target price to $6.50 from $3.
• Citigroup upgraded Mosaic (NYSE: MOS) and Potash (NYSE: POT) to Buy from Hold and Agrium (NYSE: AGU) to Hold from Sell as it believes stronger grain fundamentals more than offset China contract risk. The firm raised its target on Mosaic to $72 from $48, on Potash to $145 from $83 and on Agrium to $55 from $36.
• Fulton Financial (NASDAQ: FULT) Was upgraded to Market Perform from Underperform at Keefe Bruyette.
• Rio Tinto (NYSE: RTP) was raised to Neutral from Sell at Goldman.
• Noble Corp. (NYSE: NE) was upgraded at Deutsche Bank to Buy from Hold.

Analyst upgrades:

• Canaccord upgraded Rio Tinto (NYSE: RTP) to Buy from Hold citing valuation following the severe price decline following BHP Billiton's (NYSE: BHP) dropped bid.
• UBS upgraded Itron (NASDAQ: ITRI) to Buy from Neutral citing valuation and defensive business mix.
• Jefferies upgraded shares of HealthSouth (NYSE: HLS) to Buy from Hold on valuation and maintains a $13.50 target.
• Melco PBL Entertainment (NASDAQ: MPEL) was raised to buy from Neutral at Goldman.
• PG&E (NYSE: PCG) was upgraded at Merrill Lynch to Buy from Neutral.
• HSBC Holdings (NYSE: HBC) was upgraded to Buy from Neutral at UBS.

Analyst downgrades:

Analyst upgrades:

• Jefferies upgraded Buffalo Wild Wings (NASDAQ: BWLD) to Buy from Hold on valuation with the stock down 65% in two months as they believe the company has a "best-in-class fundamental story." The firm lowered its target to $25 from $30.
• Morgan Stanley upgraded Sanofi-Aventis (NYSE: SNY) to Overweight from Equal Weight on valuation and believes near-term cost reductions could provide a positive catalyst.
• Citigroup upgraded New York Times (NYSE: NYT) to Hold from Sell and lowered its target to $5.50 from $7 on valuation and believes the dividend cut will boost the company's liquidity.
• Pantry (NASDAQL PTRY) was upgraded to Outperform from Market Perform at Friedman Billings.
• LECG Corp (NASDAQ: XPRT) was raised to Buy from Neutral at UBS.
• Thomson Reuters (NYSE: TRI) was upgraded at RBC Capital to Outperform from Sector Perform.

Analyst downgrades:

• Jefferies downgraded Suntech (NYSE: STP) to Hold from Buy and lowered its target to $6 from $25 as they believe concerns about a convert refinancing in February 2010 will continue to weigh on the stock.
• Credit Suisse cut Ericsson (NASDAQ: ERIC) to Underperform from Outperform due to expectations for a decline in wireless infrastructure spending.
• ING downgraded shares of Rio Tinto (NYSE: RTP) to Hold from Buy as they believe it will be challenging for the company to execute asset sales planned at reducing debt in the current environment.

Here are some highlights from this past week's earnings coverage from BloggingStocks:

• Big Lots Inc. (NYSE: BIG) Q2 profits topped expectations, but it warned of weak sales in the second half.
• China Petroleum and Chemical Corp. (NYSE: SNP) first-half profits tanked due to government price controls.
• Dell Inc. (NASDAQ: DELL ) fell short of Q2 earnings estimates, surprising even Jim Cramer.
• Dillard's Inc. (NYSE: DDS) beat analysts' expectations despite widening its Q2 net loss.
• Gilat Satellite Networks Ltd. (NASDAQ: GILT) missed Q2 expectations and a merger fell through.
• J. Crew Group Inc. (NYSE: JCG) Q2 net income slipped on lower sales and gross margins.
• JP Morgan & Chase Co. (NYSE: JPM) earnings have been hurt by investments in Fannie Mae/Freddie Mac.
• LDK Solar Co. (NYSE: LDK) raised its 2009 revenue guidance on reaching peak silicon wafer capacity.
• Marvell Technology Group (NASDAQ: MRVL) beat Q2 expectations but gave a conservative Q3 outlook.
• Rio Tinto Group (NYSE: RTP) first-half profits more than doubled on its acquisition of Alcan.
• Sanderson Farms Inc. (NASDAQ: SAFM) swung to a Q3 loss due in part to rising commodities prices.
• Sears Holdings Corp. (NASDAQ: SHLD) Q2 earnings plunged more than expected on further sluggish sales.
• SkillSoft PLC (NASDAQ: SKIL) beat Q2 expectations and offered Q3 and full-year guidance.
• Smithfield Foods Inc. (NYSE: SFD) swung to a Q1 loss due in part to rising commodities prices.
• Talbots Inc. (NYSE: TLB) nearly doubled its Q2 loss due to lower sales and restructuring charges.
• Thornburg Mortgage Inc. (NYSE: TMA) posted a Q2 profit but warned of possible collapse on margin calls.
• Tiffany & Co. (NYSE: TIF) doubled its Q2 profit on strong international sales, and raised its guidance.
• TiVo Inc. (NASDAQ: TIVO) unexpectedly swung to a Q2 profit but forcast another loss in Q3.

Upcoming quarterly reports include Guess (NYSE: GES), Collective Brands (NYSE: PSS), H&R Block, (NYSE: HRB), Staples (NASDAQ: SPLS), Ciena (NASDAQ: CIEN), Toll Brothers (NYSE: TOL); and National Semiconductor (NASDAQ: NSM).

Visit AOL Money & Finance for more earnings coverage.

Eoin Treacy of Fullermoney says that as commodities prices weaken, you need to look carefully before investing.

Q. Eoin, I've read that China's annual consumption of copper has declined from a 28.66% growth rate to 2.4%. What does that mean for continued growth in China and also for the global copper market?

A. China and indeed much of Asia and the Middle East are in a generational-long period where they have to build infrastructure from the ground up. The push for educating, housing, transporting and employing large young populations requires massive investment, fueling demand for commodities across the boards.

The supply side was completely taken unawares by this demand following the 20-year crushing bear market that cut exploration budgets to the bone. That is now changing, as major mining groups compete for the best resources, particularly in politically stable parts of the world.

China continues to lead the world in terms of GDP growth, although it has recently manufactured a slowdown to combat rising inflation, generally positive for the economy.

MAJOR PAPERS:

• According to people familiar with the discussions, the Wall Street Journal reported that Microsoft Corporation (NASDAQ: MSFT) has held discussions with Time Warner Inc (NYSE: TWX) and News Corporation (NYSE: NWS), among others, about joining it in a deal that could lead to the breakup of Yahoo! Inc (NASDAQ: YHOO). Some of the sources said the preliminary talks are unlikely to result in a deal with Yahoo!
• Johnson & Johnson (NYSE: JNJ) is reportedly in exclusive talks to sell its wound-care business Ethicon to the private-equity arm of JP Morgan Chase & Co (NYSE: JPM), according to the Wall Street Journal. Terms of the potential deal were not disclosed.

OTHER PAPERS:

• Sources familiar with the inquiry said that the Justice Department has opened a formal antitrust investigation into a deal that would allow Google Inc (NASDAQ: GOOG) to provide some search advertising for Yahoo!. The Washington Post reported that investigators will demand documents from Google and Yahoo!, as well as other large companies in the media and Internet industries.

WEB SITES:

• Reuters reported that regulators in the European Union are looking at the long-term effects of BHP Billiton Limited's (NYSE: BHP) $170B bid for Rio Tinto Group (NYSE: RTP). Sources familiar with the EU questionnaire said regulators have asked competitors and customers about effects of the deal on their businesses through 2015.

MAJOR PAPERS:

• The Wall Street Journal reported that, in an attempt to move past its takeover battle with Microsoft Corporation (NASDAQ: MSFT), Yahoo! Inc (NASDAQ: YHOO) is planning a reorganization. People familiar with the matter said executives are discussing a plan to centralize numerous product groups into a global-product organization. Details may be announced next week.
• The Wall Street Journal also reported that an internal feud at Live Nation Inc (NYSE: LYV) over strategy may soon be resolved, as the concert promoter is reportedly negotiating the exit of chairman Michael Cohl.

OTHER PAPERS:

• A recommendation by an Australian commission to open Rio Tinto Group's (NYSE: RTP) Pilbara railway to third parties could cost $30B if the idea is implemented, Rio contended and the Australian reported. The National Competition Commission, which advises Australian governments on infrastructure issues, has suggested that Fortescue Metals Group be given access to certain rail lines operated by Rio Tinto.

WEB SITES:

• A joint investigation by CBC News and the Canadian Press found one-third of people shot by Taser International Inc's (NASDAQ: TASR) Tasers reportedly required some medical attention, Engadget reported.
• TechCrunch confirmed that Joshua Schachter, the founder of delicious, will resign from Yahoo!. Sources believe the near-stalled development of the new version of delicious may have played a part in his resignation.

MAJOR PAPERS:

• The Wall Street Journal reported that Ford Motor Company (NYSE: F) CEO Alan Mulally isn't done cost-cutting. According to people close to the situation, Mulally is considering more job cuts, selling its Volvo brand and closing the troubled Mercury brand.
• BHP Billiton Limited (NYSE: BHP) CEO Marius Kloppers strongly criticized Rio Tinto Plc (NYSE: RTP) and its CEO yesterday, the Financial Times reported. BHP Billiton has outperformed Rio Tinto in several areas, including share price appreciation and EPS growth, said Kloppers, adding, "On every metric I can envisage they [Rio] have been beaten."

OTHER PAPERS:

• According to the Economic Times, AT&T Inc (NYSE: T) is reportedly in preliminary talks with Malaysia's Maxis Communications about buying its 74% stake in Indian cellular phone company Aircel, sources said.
• The United Auto Workers union has rejected several "generous" benefit and wage proposals, according to American Axle & Manufacturing Holdings Inc (NYSE: AXL). In a statement yesterday, the Detroit News reported that American Axle said while tentative agreements had been reached on several issues, the UAW "repeatedly rejected" other proposals that were "considerably higher than the market rate."

MOST NOTEWORTHY: Jefferies Group, Quality Systems and Techwell were today's noteworthy initiations:

• Friedman Billings initiated Jefferies Group (NYSE: JEF) with a Market Perform citing the difficult underwriting environment and challenging credit market.
  
• JMP Securities initiated Quality Systems (NASDAQ: QSII) with an Outperform rating and $35 target. The firm expects the company's practice management and electronic medical record solutions to benefit from growth opportunities within the ambulatory market.
  
• Techwell (NASDAQ: TWLL) was assumed with an Overweight rating and $14 target at Thomas Weisel, as they expect TWLL to have continued stable revenue growth given its market leadership and increased global security demand.

OTHER INITIATIONS:

• Bernstein initiated NetSuite (NYSE: N) with a Market Perform rating and $23 target.
  
• Keefe Bruyette started Comerica (NYSE: CMA) with a Market Perform rating and $37 target.
  
• BHP Billiton (NYSE: BHP) and Rio Tinto (NYSE: RTP) were assumed at ING with Buy ratings.