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Most shorted stocks reporting earnings this week

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Many investors are hoping for their big bets to pay off this week with earnings beats, but others are wagering that companies will disappoint.

Swift Energy, an oil and gas company primarily working in Texas and Louisiana, is the most shorted stock reporting earnings this week—almost 39 percent of its shares outstanding are on loan, according to Markit. The stock is down almost 14 percent year-to-date, but is well above its lows from the beginning of March.

KEYW Holding, a cyber security firm that Reuters reports has worked with the U.S. government, is also heavily shorted—the second-most of any stock announcing earnings this week with 32 percent of shares outstanding on loan. Markit analyst Simon Colvin notes that KEYW's bears have stuck to their guns, driving up short interest to an all-time high despite the stock recovering off of recent lows.

Read More Most shorted stocks that announced earnings last week

But while many of the most shorted stocks announcing earnings this week are less well-known companies, several consumer-facing firms make Markit's list this week: gun maker Sturm Ruger & Co, SodaStream, and Herbalife all have more than 20 percent of outstanding shares on loan.

Here's Markit's full list of the most shorted U.S. stocks reporting earnings this week:

Name Ticker % Shares Outstanding on Loan 1 Month % Change Industry Earnings Date
Swift EnergySFY38.9-5%Oil, Gas & Consumable Fuels7/31/2014
KEYW HoldingKEYW32.36%Aerospace & Defense7/31/2014
Walter EnergyWLT32.2-10%Metals & Mining7/31/2014
InvensenseINVN28.812%Electronic Equipment, Instruments & Components7/29/2014
OuterwallOUTR28.57%Specialty Retail7/31/2014
ExelixisEXEL26.98%Biotechnology7/31/2014
Veeco InstrumentsVECO23.427%Semiconductors & Semiconductor Equipment7/30/2014
AbiomedABMD22.06%Health Care Equipment & Supplies7/31/2014
QuebecorQBR.B21.821%Media7/31/2014
CbizCBZ21.2-8%Professional Services7/29/2014
La Jolla PharmaceuticalLJPCD21.26%Biotechnology8/1/2014
Cgi GroupGIB.A21.10%IT Services7/30/2014
HerbalifeHLF20.514%Personal Products7/28/2014
Sturm Ruger & CoRGR20.319%Leisure Products7/29/2014
Sodastream InternationalSODA20.28%Household Durables7/30/2014
Keryx BiopharmaceuticalsKERX20.01%Biotechnology8/1/2014
Arch CoalACI19.74%Oil, Gas & Consumable Fuels7/29/2014
Iridium CommunicationsIRDM19.63%Diversified Telecommunication Services7/31/2014
AffymetrixAFFX19.24%Life Sciences Tools & Services7/31/2014
3D SystemsDDD19.14%Technology Hardware, Storage & Peripherals7/31/2014

—By CNBC's Everett Rosenfeld