NEW YORK (TheStreet) -- Shares of FireEye  (FEYE) - Get Report fell 5.35% to $43.68 in afternoon trading Monday after JPMorgan downgraded peer company CyberArk  (CYBR) - Get Report to "underweight" and reiterated its $42 price target.

The downgrade sent other cybersecurity stocks, such as FireEye and Palo Alto Networks  (PANW) - Get Report , down on Monday.

"Closing at just over $70, the stock is trading at roughly 9.7x our best upside scenario for 2016 revenue that we outline," JPMorgan wrote in a research note. "It is not that we think the company cannot reach these estimates, but rather this level of upside appears to already be factored into the stock at these levels."

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The cybersecurity group had rallied since a widespread breach in the financial sector early last week increased global concerns about cyber security.

Russia's Kaspersky Lab, the world's leading antivirus vendor, has uncovered what could be one of the largest banking hacks in history. At least $1 billion has trickled out of more than 100 banks around the world as a result of the actions of an international hacking ring that stole money from more than 30 nations including the U.S., Russia, and China.

"This is likely the most sophisticated attack the world has seen to date in terms of the tactics and methods that's cybercriminals have used to remain covert," a Kaspersky Lab spokesperson told the New York Times.

Separately, TheStreet Ratings team rates FIREEYE INC as a "sell" with a ratings score of D+. TheStreet Ratings Team has this to say about their recommendation:

"We rate FIREEYE INC (FEYE) a SELL. This is driven by several weaknesses, which we believe should have a greater impact than any strengths, and could make it more difficult for investors to achieve positive results compared to most of the stocks we cover. The company's weaknesses can be seen in multiple areas, such as its deteriorating net income, generally disappointing historical performance in the stock itself and feeble growth in its earnings per share."

Highlights from the analysis by TheStreet Ratings Team goes as follows:

  • The company, on the basis of change in net income from the same quarter one year ago, has significantly underperformed when compared to that of the S&P 500 and the Software industry. The net income has significantly decreased by 4107.2% when compared to the same quarter one year ago, falling from -$2.51 million to -$105.73 million.
  • Despite any intermediate fluctuations, we have only bad news to report on this stock's performance over the last year: it has tumbled by 37.72%, worse than the S&P 500's performance. Consistent with the plunge in the stock price, the company's earnings per share are down 3500.00% compared to the year-earlier quarter. Naturally, the overall market trend is bound to be a significant factor. However, in one sense, the stock's sharp decline last year is a positive for future investors, making it cheaper (in proportion to its earnings over the past year) than most other stocks in its industry. But due to other concerns, we feel the stock is still not a good buy right now.
  • FIREEYE INC has experienced a steep decline in earnings per share in the most recent quarter in comparison to its performance from the same quarter a year ago. The company has reported a trend of declining earnings per share over the past year. However, the consensus estimate suggests that this trend should reverse in the coming year. During the past fiscal year, FIREEYE INC reported poor results of -$3.13 versus -$0.45 in the prior year. This year, the market expects an improvement in earnings (-$1.85 versus -$3.13).
  • The gross profit margin for FIREEYE INC is currently very high, coming in at 81.27%. Regardless of FEYE's high profit margin, it has managed to decrease from the same period last year. Despite the mixed results of the gross profit margin, FEYE's net profit margin of -73.94% significantly underperformed when compared to the industry average.
  • Compared to other companies in the Software industry and the overall market, FIREEYE INC's return on equity significantly trails that of both the industry average and the S&P 500.
  • You can view the full analysis from the report here: FEYE Ratings Report