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

• Boeing Co. (NYSE: BA) earnings prospects may have encouraged the machinist union to strike.
• Ciena Corp. (NASDAQ: CIEN) Q3 results and weak guidance led shares to a new 52-week low.
• Corning Inc. (NYSE: GLW) lowered its Q3 earnings guidance below previous and analysts' forecasts.
• Dollar Financial Corp. (NASDAQ: DLLR) beat Q4 estimates and posted record 2008 results.
• Ericsson Telephone Co. (NASDAQ: ERIC) was downgraded because it could miss Q3 earnings expectations.
• Esterline Technologies (NYSE: ESL) topped Q3 expectations due to robust aerospace and defense markets.
• Joy Global Inc. (NASDAQ: JOYG) posted strong Q3 results due to a sharp increase in orders.
• Kraft Foods Inc. (NYSE: KFT) backed away somewhat from its previous 2008 earnings guidance.
• Legg Mason Inc. (NYSE: LM) earnings prospects for the next several quarters led to an analyst downgrade.
• MEMC Electronic Materials Inc. (NYSE: WFR) mid quarter update warned of declining demand for chips.
• Navistar International Corp. (NYSE: NAV) was upgraded following a strong Q3 report.
• New York Times Co. (NYSE: NYT) ongoing losses haven't diminished Rupert Murdoch's interest in it.
• Nokia Corp. (NYSE: NOK) warned that it would miss earnings estimates due in part to weak sales.
• Shanda Interactive Entertainment Ltd. (NASDAQ: SNDA) better-than-expected Q2 led to an analyst upgrade.
• Staples Inc. (NASDAQ: SPLS) Q2 earnings slipped while revenues rose, beating expectations.
• Take-Two Interactive Software Inc. (NASDAQ: TTWO) Q3 results soared but cut its Q4 guidance.
• Tenet Healthcare Corp. (NYSE: THC) was upgraded on its prospects for beating expectations.
• Terex Corp. (NYSE: TEX) warned that earnings for Q3 and Q4 would be lower than estimates.
• Tiffany & Co. (NYSE: TIF) posted better-than-expected Q2 results and offered full-year guidance.
• Toll Brothers Inc. (NYSE: TOL) reported its fourth straight quarterly loss, but it was smaller than expected.

Also, Jim Cramer discusses a decline in earnings resulting from a collapse of oil and oil services.

Upcoming quarterly reports include Korn/Ferry (NYSE: KFY), Pep Boys (NYSE: PBY), Campbell Soup (NYSE: CPB), Krispy Kreme (NYSE: KKD), and Lululemon Athletica (NASDAQ: LULU).

Visit AOL Money & Finance for more earnings coverage.

MOST NOTEWORTHY: Overseas Shipholding, Tenet Healthcare and Luxottica were today's noteworthy upgrades:

• Bear upgraded Overseas Shipholding Group (NYSE: OSG) to Outperform from Peer Perform following its Q4 results, citing seasonal strength.
  
• Tenet Healthcare (NYSE: THC) was upgraded to Hold from Underperform at Jefferies after quarterly operating trends showed signs of stabilization.
  
• Goldman raised Luxottica Group (NYSE: LUX) to Buy from Neutral and added shares to their Conviction Buy List as they find the valuation attractive at current levels.

OTHER UPGRADES:

• UBS raised Telefonica (NYSE: TEF) to Buy from Neutral.
  
• Goldman added El Paso Pipeline Partners (NYSE: EPB) to its Conviction Buy List.
  
• Royal Ahold (OTC: AHONY) was upgraded to Buy from Neutral at Merrill Lynch.

MOST NOTEWORTHY: Celgene (CELG), Sysco (SYY), Kinetic Concepts (KCI), BioMimtic Therapeutics (BMTI) and Lifecell Corp (LIFC) were today's noteworthy initiations:

• William Blair believes Celgene (NASDAQ: CELG) has the best growth profile in large-cap biotechnology and initiated shares with an Outperform rating.

• Citigroup views Sysco (NYSE: SYY) as the dominant leader in the foodservice distribution industry, initiating shares with a Buy rating, and feels the company will continue to take market share from its peers. The firm thinks the current valuation reflects the perception that Sysco may perform poorly in the near-term, which they disagree with.

• Wachovia started Kinetic Concepts (NYSE: KCI) with a Market Perform, citing competitive pressures and mature markets for its rating.

• Wachovia is positive on BioMimetic Therapeutics (NASDAQ: BMTI), initiating shares with an Outperform, based on strong rhPDGF technology, strategy, and management team.

• Wachovia is positive on Lifecell Corp's (NASDAQ: LIFC) Strattice, a porcine tissue matrix, which improves the company's international exposure and provides opportunities in new markets, initiating shares with an Outperform...

OTHER INITIATIONS:

• Credit Suisse initiated Community Health (NYSE: CYH) and Universal Health (NYSE: UHS) with Outperform ratings, LifePoint (NASDAQ: LPNT) with a Neutral rating, and Health Management (NYSE: HMA) and Tenet Healthcare (NYSE: THC) with Underperform ratings.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Amazon.com (AMZN), Luminent Mortgage (LUM), Whole Foods (WFMI), Tenet Healthcare (THC) and Pediatrix Medical (PDX) were today's noteworthy upgrades:

• Bernstein upgraded Amazon.com (NASDAQ: AMZN) to Outperform from Market Perform, citing margins on 3rd party transactions that are close to eBay's (EBAY) and that the overseas merchants initiative will increase 3rd party units to 25% of sales. The move is expected to increase operating margins to 6.2% by 2011, above the previously expected improvement of 4.6% by the same time.

• JMP Securities said Luminent Mortgage's (NYSE: LUM) $64.9M emergency financing from Arco Capital may preserve some value for shareholders, and upgraded shares to Market Underperform from Sell.

• JP Morgan added Whole Foods (NASDAQ: WFMI) to its Focus List, and expects the Wild Oats (NASDAQ: OATS) acquisition to be a catalyst for shares.

• Deutsche Bank upgraded Tenet Healthcare (NYSE: THC) to Hold from Sell.

• Matrix USA raised Pediatrix Medical (NYSE: PDX) to Buy from Hold, citing valuation...

OTHER UPGRADES:

• AGL Resources (NYSE: ATG) and Atmos Energy (NYSE: ATO) were upgraded to Buy from Neutral at Calyon.

• Rowan Co (NYSE: RDC) was upgraded to Outperform from Peer Perform at Bear Stearns.

• Goldman raised O'Reilly Automotive (NASDAQ: ORLY) to Buy from Neutral.

• BMO Capital upgraded General Mills (NYSE: GIS) to Outperform from Market Perform.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Cisco Systems (CSCO), Finisar Corp (FNSR), Tenet Healthcare (THC), Best Buy (BBY) and Cascade Corp (CAE) were today's noteworthy upgrades:

• Bear Stearns upgraded shares of Cisco Systems (NASDAQ: CSCO) to Outperform from Peer Perform, with a $36 target, after the quarterly results as they believe revenue growth is sustainable and diversified. Bear expects Cisco to benefit from significant new product cycles over the next two years and believes investments in emerging markets are beginning to pay off.
  

• Merriman upgraded Finisar (NASDAQ: FNSR) to Buy from Neutral to reflect the improved outlook at their top customer, Cisco.

• Tenet Healthcare (NYSE: THC) was upgraded to Hold from Sell at Stifel, as the firm expects shares to remain range bound.

• Pali Capital raised shares of Best Buy (NYSE: BBY) to Buy from Neutral with a $55 target on valuation as they believe the bad news is already priced in.

• Cascade (NYSE: CAE) was upgraded to Market Perform from Underperform at Rodman & Renshaw on valuation.

OTHER UPGRADES:

• Warner Music (NYSE: WMG) was upgraded to Buy from Sell with a $13 target at Citigroup.

• Citigroup also upgraded shares of Copa Holdings (NYSE: CPA) to Buy from Hold with a $71 target.

• Baird upgraded shares of Parkway Properties (NYSE: PKY) to Outperform from Neutral on valuation.

• Computer Sciences (NYSE: CSC) was raised to Hold from Underperform at Jefferies on valuation and improvement in bookings.

• Morgan Stanley upgraded ABB Ltd (NYSE: ABB) to Overweight from Equal Weight.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

Monday August 6

• Blue Nile Inc (NASDAQ: NILE) to report Q2 earnings; conference call at 5pm.
• SINA Corporation (NASDAQ: SINA) to report Q2 earnings; conference call at 9pm.

Tuesday August 7

• Tenet Healthcare Corporation (NYSE: THC) to report Q2 earnings; conference call at 11am.
• Cisco Systems Inc (NASDAQ: CSCO) to report Q4 earnings; conference call at 4:30pm.

Wednesday August 8

• Sprint Nextel Corporation (NYSE: S) to report Q2 earnings; conference call at 8am.
• Hot Topic Inc (NASDAQ: HOTT) to report monthly sales at 4pm.

Thursday August 9

• More monthly sales reports, including: Chicos FAS Inc (NYSE: CHS) at 7:30am; Limited Brands Inc (NYSE: LTD) at 7:30am; Wal-Mart Stores Inc (NYSE: WMT) at 8am; AnnTaylor Stores Corporation (NYSE: ANN) at 8am; and Abercrombie & Fitch Co (NYSE: ANF) at 8:15am.

Friday August 10

• EchoStar Communications Corporation (NASDAQ: DISH) to report Q2 earnings; conference call at 12pm.
• PDUFA date for Solvay SA (OTC: SVYSY) and Wyeth's (NYSE: WYE) Bifeprunox for the treatment of Schizophrenia.

MOST NOTEWORTHY: The systems technology sector, Auxilium Pharmaceuticals (AUXL) and BioSante Pharm (BPA) were today's noteworthy initiations:

• In the systems technology sector, JP Morgan initiated coverage on CommVault Systems (NASDAQ: CVLT) and Double-Take Software, Inc (NASDAQ: DBTK) with Overweight ratings, Isilon Systems (NASDAQ: ISLN) and Opsware Inc (NASDAQ: OPSW) with Neutral ratings and Avocent Corp (NASDAQ: AVCT) with an Underweight rating.

• Auxilium Pharmaceuticals (NASDAQ: AUXL) was initiated with an Outperform rating at Cowen, which said AUXL's lead candidate, AA4500, is in pivotal testing for Dupuytren's contracture, which could be a $400M+ revenue opportunity.

• BioSante Pharmaceuticals (AMEX: BPA) was initiated with a Positive rating at Susquehanna, as the firm is positive on BPA's growth prospects for the transdermal estrogen market, upside potential from the female dysfunction market, and valuation.

OTHER INITIATIONS:

• Morgan Stanley initiated shares of Lamar Advertising (NASDAQ: LAMR) with an Overweight rating and $77 target.

• SunTrust Robinson Humphrey initiated shares of Texas Roadhouse (NASDAQ: TXRH) with a Neutral rating.

• Morgan Joseph initiated shares of Metalico (AMEX: MEA) with a Hold rating.

• Stifel Nicolaus initiated shares of Tenet Healthcare (NYSE: THC) with a Sell rating and a $5 target.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Tenet Healthcare Corp (THC), Furniture Brands International, Inc (FBN), Sepracor Inc (SEPR), ValueClick, Inc (VCLK) and Altria Group, Inc (MO) were today's noteworthy downgrades:

• Bear Stearns downgraded shares of Tenet Healthcare (NYSE: THC) to Underperform from Peer Peform citing difficulties in California and weak margins.

• Stifel downgraded Furniture Brands (NYSE: FBN) to Sell from Hold citing concerns regarding continued weakness in the housing industry.

• Summer Street downgraded Sepracor (NASDAQ: SEPR) to Sell from Neutral after the HCPCS website indicated Xopenex and Albuterol will have the same code as of July 1.The firm believes this eliminates the optimistic scenarios that Sepracor can garner a minimal-or-no-reimbursement cut.

• RBC downgraded shares of ValueClick (NASDAQ: VCLK) to Underperform from Sector Perform as the firm believes the FTC letter poses a risk to earnings and that the company is unlikely to be acquired.

• Matrix downgraded Altria Group (NYSE: MO) to Buy from Strong Buy to reflect decreasing cigarette sales and increasing valuation...

OTHER DOWNGRADES:

• American Technology cut Autodesk, Inc (NASDAQ: ADSK) to Neutral from Buy.

• Matrix downgraded Fluor Corp (NYSE: FLR) to Sell from Buy.

• Jackson Hewitt Tax Service (NYSE: JTX) was cut to Market Perform from Outperform at William Blair.

• Baird sent Alliance Data Systems Corp (NYSE: ADS) to Neutral from Outperform.

• Roth Capital downgraded shares of Sonic Solutions (NASDAQ: SNIC) to Hold from Buy.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Marvel Entertainment, Inc (MVL), Electronic Arts Inc (ERTS), ION Media Networks Inc (ION), Allscripts Healthcare Solutions, Inc (MDRX) and Tenet Healthcare Corp (THC) were today's noteworthy downgrades:

• JP Morgan downgraded Marvel Entertainment (NYSE: MVL) to Neutral from Overweight based on the lack of near-term catalysts.

• Gabelli downgraded Electronic Arts (NASDAQ: ERTS) to Hold from Buy on reduced 2008 expectations. The firm expects Electronic to lose market share given the lack of Q1 product launches.

• CRT downgraded ION Media Networks (AMEX: ION) to Sell from Buy and recommends taking profits at these levels as shares are approaching Citadel LP's offer of $1.46 per share.

• BB&T cut Allscripts Healthcare Solutions, Inc (NASDAQ: MDRX) to Hold from Buy after its weak Q1 report.

• Jefferies downgraded Tenet Healthcare (NYSE: THC) to Underperform from Hold with a $5.50 target to reflect weak volumes.
  

OTHER DOWNGRADES:

• Brooks Automation, Inc (NASDAQ: BRKS) was cut to Peer Perform from Outperform at Bear Stearns.

• Prudential downgraded AngloGold Ashanti Ltd (NYSE: AU) to Neutral from Overweight.

• JP Morgan downgraded Jeffries Group, Inc (NYSE: JEF) to Market Perform to Outperform at Keefe Bruyette.

• Pacific Crest cut Cisco Systems, Inc (NASDAQ: CSCO) to Sector Perform from Outperform on valuation.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).