Investment Analysts’ upgrades for Tuesday, October 24th:

Africa Oil Corp. (OTCMKTS:AOIFF) was upgraded by analysts at Zacks Investment Research from a hold rating to a buy rating. Zacks Investment Research currently has $1.25 price target on the stock. According to Zacks, “Africa Oil Corp. is an oil and gas exploration and development company. The Company owns interests in exploration licenses in Kenya, Ethiopia, the Republic of Mali, and Somalia. Africa Oil Corp. is headquartered in Vancouver, Canada. “

Accuray (NASDAQ:ARAY) was upgraded by analysts at Zacks Investment Research from a hold rating to a buy rating. The firm currently has $4.75 target price on the stock. According to Zacks, “Over the past year, Accuray has underperformed the broader industry with respect to price. Notably, the company issued solid fiscal 2018 guidance in the last quarter. Of the recent developments, orders for the latest Radixact System, solid revenue performance in APAC and Japanese regulatory approval for Radixact deserve a mention. Growing adoption of non-surgical treatment options among cancer patients, increasing demand for Accuray’s latest offerings, successful execution of restructuring plans and accretive acquisitions are other positives. Accuray’s significant international presence helps broaden its customer base. However, fluctuations in currency exchange rates, particularly with a strong dollar, will continue to adversely impact the company’s backlog and top line. Furthermore, unfavorable product mix, declining service revenues, sluggish macro economic conditions and pricing headwinds are major concerns.”

ARGENX SE-ADR (NASDAQ:ARGX) was upgraded by analysts at Zacks Investment Research from a hold rating to a buy rating. The firm currently has $26.00 price target on the stock. According to Zacks, “argenx SE is a biopharmaceutical company. It focuses on developing antibody-based therapies for the treatment of autoimmune diseases and cancer. The company’s product pipeline consists of ARGX-113, ARGX-110 and ARGX-111 which are in clinical trials. argenx SE is based in Breda, the Netherlands. “

Amtech Systems (NASDAQ:ASYS) was upgraded by analysts at Zacks Investment Research from a hold rating to a buy rating. The firm currently has $16.00 target price on the stock. According to Zacks, “AMTECH SYSTEMS, INC. is engaged in the manufacture of several items of capital equipment, one of which is patented, used by customers in the manufacture of semiconductors. Co. has recently obtained a U.S. patent on technology on which it expects to base a proposed new photo chemical vapor deposition (CVD) product for use in semiconductor manufacturing facilities. The Company has engaged the University of California, Santa Cruz, to conduct a study to determine the feasibility of such a product. “

AveXis (NASDAQ:AVXS) was upgraded by analysts at Zacks Investment Research from a hold rating to a buy rating. Zacks Investment Research currently has $112.00 target price on the stock. According to Zacks, “AveXis, Inc. is a gene therapy company which develops and commercializes treatments for neurological genetic diseases primarily in United States. The Company’s product candidate consists of AVXS-101 which is in clinical trial for the treatment of spinal muscular atrophy Type 1, the genetic cause of infant mortality. AveXis, Inc. is headquartered in Bannockburn, Illinois. “

Baxter International (NYSE:BAX) was upgraded by analysts at Zacks Investment Research from a hold rating to a buy rating. They currently have $72.00 target price on the stock. According to Zacks, “Over the past year, Baxter has outperformed the broader industry in terms of price performance. The company rides on the recent launch of DeviceVue, a comprehensive asset tracking solution available exclusively to hospitals. However, lower cyclophosphamide sales in the coming quarters might mar the Baxter’s bottom line. Of the major positives, a favorable product mix, stringent cost control and expanding operating margin are notable. Baxter reported impressive results in the last quarter, driven by favorable tidings on the regulatory front, strategic partnerships and product launches. The company completed the acquisition of Claris Injectables in the recent past. Solid U.S. sales of IV therapies, IV access sets, select anesthesia and critical care products are key catalysts at the moment. On the flipside, a strong U.S. dollar, intensifying competition and lackluster sales growth are key concerns at the moment.”

Bitauto Holdings Limited (NYSE:BITA) was upgraded by analysts at Zacks Investment Research from a sell rating to a buy rating. The firm currently has $56.00 price target on the stock. According to Zacks, “Bitauto Holdings Limited is engaged in providing internet content and marketing services for automotive industry in China. Its bitauto.com and ucar.cn websites provide consumers new and used automobile pricing information, specifications, reviews and consumer feedback. The Company operates in three segments- bitauto.com business, ucar.cn business and digital marketing solutions business. Bitauto.com business provides subscription services to new automobile dealers and advertising services to dealers and automakers on bitauto.com website. Bitauto’s ucar.cn business provides listing and advertising services to used automobile dealers on ucar.cn website. The Company’s digital marketing solutions business provides automakers with digital marketing solutions, including website creation and maintenance, online public relations, online marketing campaigns and advertising agent services. Bitauto Holdings Limited is headquartered in Beijing, the People’s Republic of China. “

Bank of Commerce Holdings (CA) (NASDAQ:BOCH) was upgraded by analysts at Zacks Investment Research from a hold rating to a buy rating. They currently have $12.00 price target on the stock. According to Zacks, “Bank of Commerce Holdings is a financial service holding company that owns Redding Bank of Commerce, Roseville Bank of Commerce, a division of Redding Bank of Commerce and Bank of Commerce Mortgage, an affiliate of Redding Bank of Commerce and Roseville Bank of Commerce. “

Buenaventura Mining (NYSE:BVN) was upgraded by analysts at Zacks Investment Research from a hold rating to a buy rating. They currently have $16.00 target price on the stock. According to Zacks, “COMPAÑÍA DE MINAS BUENAVENTURA is a leading mining company producing precious metals and holding mining rights in Peru. Since its inception in 1953, Buenaventura has focused on exploration and exploitation activities both by its own and through joint ventures. Buenaventura also is an important shareholder of Minera Yanacocha S.R.L., one of the leading gold producers in Latin America. “

IDEXX Laboratories (NASDAQ:IDXX) was upgraded by analysts at Zacks Investment Research from a hold rating to a buy rating. Zacks Investment Research currently has $184.00 target price on the stock. According to Zacks, “Over the last six months, IDEXX has been trading below the broader industry. Also, the company’s high dependence on third-party distributors and intense competition continue to pose threats. Moreover, with growing international expansion, the company's Companion Animal Diagnostics business is likely to suffer from adverse currency fluxes. The stock’s overvaluation is also a concern. On a positive note, IDEXX continues to demonstrate solid growth globally on strong international expansion. Management’s innovation-based global strategy is leading to CAG Diagnostics growth. Notably, IDEXX recently widened its cloud technology portfolio by adding rVetLink.  Solid organic revenue growth along with a raised guidance for 2017 buoy optimism.”

Starbucks Corporation (NASDAQ:SBUX) was upgraded by analysts at Zacks Investment Research from a sell rating to a hold rating. According to Zacks, “Starbucks’s operating fundamentals such as solid global retail footprint, successful innovations, best-in-class loyalty program and digital offerings remain strong. Again, digital initiatives like mobile order/pay, delivery services and third-party loyalty partnerships can stimulate stronger sales trends in the Americas. CPG growth across the world as well as China/Asia expansion will also lead to value creation. These initiatives might benefit the company in the long run. However, the consequential increment in spending is likely to create pressure on its bottom line in the near term. Also, economic, geopolitical and consumer headwinds continue to impact Starbucks' results. Meanwhile, the company’s shares have underperformed the industry so far this year.”

Stryker Corporation (NYSE:SYK) was upgraded by analysts at Zacks Investment Research from a sell rating to a hold rating. According to Zacks, “Stryker announced the voluntary product recall of the Oral Care lineup recently. The recall is likely to adversely impact the company’s sales and operating income. Moreover, volatility in foreign currency exchange is likely to impede revenue growth. Stryker also faces supply-side headwinds and has been grappling with issues in the spine business for long. On a positive note, Stryker exited the second quarter on a solid note, beating the Zacks Consensus Estimate on both counts. Solid performance in the MAKO platform drove revenues. An upbeat guidance for the full year instills investor confidence on the stock. Stryker has a diversified product portfolio. Continued strong demand for hemorrhagic and ischemic stroke products and neuro-powered instruments boosted sales in the neurotechnology segment. Stryker has had an impressive run on the bourse over the last year, trading above the broader industry.”

Twitter (NYSE:TWTR) was upgraded by analysts at Zacks Investment Research from a sell rating to a hold rating. According to Zacks, “Twitter shares have underperformed the broader market in the past one year.  Slowdown in its user base and ad revenues remain areas of concerns. Moreover, increasing competition and stringent regulations for social media platforms continue to be overhangs. However,  to boost user growth rate and engagement levels, Twitter remains focused on “live” and betting big on Periscope. It is now exploring beyond just news, and the series of live streaming deals are a step in that direction. Also, Twitter's cost cutting efforts are impressive. Estimates remain stable ahead of the upcoming third quarter 2017 earnings release.”

Western Digital Corporation (NASDAQ:WDC) was upgraded by analysts at Zacks Investment Research from a sell rating to a hold rating. According to Zacks, “Western Digital provided weak first-quarter fiscal 2018 guidance that reflects weak PC shipment as well as intensifying competition in the hard-drive disk (HDD) market. Moreover, the ongoing legal tussle with Toshiba regarding the memory unit in Japan remains a concern. Notably, the shares have outperformed the industry on a year-to-date basis. We note that the company is benefiting from strong demand for both hard drive and NAND-based products from all categories of customers, largely driven by cloud and mobility based applications. Moreover, the acquisitions of Upthere and planned buyout of Tegile Systems will help the company in expanding its presence with a wider range of products and solutions. We believe that strong demand for NAND flash memory chips is a key catalyst for the company.”

Wpp Plc (NASDAQ:WPPGY) was upgraded by analysts at Zacks Investment Research from a sell rating to a buy rating. Zacks Investment Research currently has $102.00 target price on the stock. According to Zacks, “WPP is one of the largest advertising companies in the world and has accumulated a vast portfolio of global and regional brands. A geographically superior position in new markets and functional strength in new media and data investment management will likely help WPP in achieving steady revenue growth. The company is committed to return value to its shareholders through steady payment of dividends and stock repurchases. Dividends for first half 2017 represented an increase of 16.1% over the previous year with a payout ratio of 50%. However, the company underperformed the industry year to date. WPP is also weighed down by the economic fragility due to the Brexit referendum, political instability in the Middle East and a striking slowdown in the Chinese economy.”

Yum! Brands (NYSE:YUM) was upgraded by analysts at Zacks Investment Research from a sell rating to a hold rating. According to Zacks, “Yum! Brands has performed relatively well in the domestic and many key international markets. Following China business spin-off, Yum! Brands’ endeavors to drive growth by employing greater focus on the development of its three iconic global brands, increasing its franchise ownership, and creating a leaner, more efficient cost structure, bode well. In fact, its shares have also outpaced the industry ever since the separation. Meanwhile, enhanced focus on bold restaurant development should further drive growth. Also, increased investments in technology-based initiatives are expected to drive comps in the coming quarters. The company has positive record of earnings surprises in recent quarters and estimates too have been stable ahead of its third quarter earnings release. Yet, continual underperformance of the Pizza Hut U.S. division, macroeconomic concerns coupled with negative currency translation raises concern.”

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