Editor's Note: Any reference to TheStreet Ratings and its underlying recommendation does not reflect the opinion of TheStreet, Inc. or any of its contributors including Jim Cramer or Stephanie Link.

Yesterday, May 19, 2014, 147 U.S. common stocks issued filings of shares being bought or sold by insiders. The transactions ranged in value from $80.88 to $19,640,406.96.

Highlighted Stocks Traded by Insiders:

Proofpoint (PFPT) - FREE Research Report

Hahn Eric, who is Director at Proofpoint, sold 10,000 shares at $26.66 on May 19, 2014. Following this transaction, the Director owned 444,972 shares meaning that the stake was reduced by 2.2% with the 10,000-share transaction.

The shares most recently traded at $30.15, up $3.49, or 11.58% since the insider transaction. Historical insider transactions for Proofpoint go as follows:

  • 4-Week # shares sold: 10,000
  • 12-Week # shares sold: 45,103
  • 24-Week # shares sold: 135,342

The average volume for Proofpoint has been 642,700 shares per day over the past 30 days. Proofpoint has a market cap of $1.1 billion and is part of the technology sector and computer software & services industry. Shares are down 8.14% year-to-date as of the close of trading on Monday.

Proofpoint, Inc. provides threat protection, regulatory compliance, archiving and governance, and secure communication solutions worldwide. Currently, there are 8 analysts who rate Proofpoint a buy, no analysts rate it a sell, and 1 rates it a hold.

Exclusive Offer: Get the latest Stock Analysis on PFPT - FREE

TheStreet Quant Ratings rates Proofpoint as a sell. The company's weaknesses can be seen in multiple areas, such as its deteriorating net income, generally high debt management risk and feeble growth in its earnings per share. Get the full Proofpoint Ratings Report from TheStreet Quant Ratings now.

STOCKS TO BUY: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12 months. Learn more.

DaVita HealthCare Partners (DVA) - FREE Research Report

Thiry Kent J, who is Co-Chairman & CEO at DaVita HealthCare Partners, sold 17,600 shares at $67.41 on May 19, 2014. Following this transaction, the Co-Chairman & CEO owned 247,950 shares meaning that the stake was reduced by 6.63% with the 17,600-share transaction.

Zumwalt Leanne M, who is Grp VP Purch & Public Affairs at DaVita HealthCare Partners, sold 245 shares at $67.30 on May 19, 2014. Following this transaction, the Grp VP Purch & Public Affairs owned 7,194 shares meaning that the stake was reduced by 3.29% with the 245-share transaction.

Kogod Dennis, who is COO, HealthCare Partners at DaVita HealthCare Partners, sold 18,750 shares at $67.30 on May 19, 2014. Following this transaction, the COO, HealthCare Partners owned 40,874 shares meaning that the stake was reduced by 31.45% with the 18,750-share transaction.

The shares most recently traded at $67.46, up $0.16, or 0.24% since the insider transaction. Historical insider transactions for DaVita HealthCare Partners go as follows:

  • 4-Week # shares sold: 3,744
  • 12-Week # shares sold: 7,209
  • 24-Week # shares sold: 33,698

The average volume for DaVita HealthCare Partners has been 1.3 million shares per day over the past 30 days. DaVita HealthCare Partners has a market cap of $14.5 billion and is part of the health care sector and health services industry. Shares are up 6.47% year-to-date as of the close of trading on Monday.

DaVita HealthCare Partners Inc. provides kidney dialysis services for patients suffering from chronic kidney failure or end stage renal disease. It operates kidney dialysis centers and provides related lab services primarily in outpatient dialysis centers and in contracted hospitals. The company has a P/E ratio of 18.4. Currently, there are 8 analysts who rate DaVita HealthCare Partners a buy, no analysts rate it a sell, and 3 rate it a hold.

Exclusive Offer: Get the latest Stock Analysis on DVA - FREE

TheStreet Quant Ratings rates DaVita HealthCare Partners as a buy. The company's strengths can be seen in multiple areas, such as its impressive record of earnings per share growth, compelling growth in net income, revenue growth, notable return on equity and good cash flow from operations. We feel these strengths outweigh the fact that the company shows low profit margins. Get the full DaVita HealthCare Partners Ratings Report from TheStreet Quant Ratings now.

STOCKS TO BUY: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12 months. Learn more.

Fleetcor Technologies (FLT) - FREE Research Report

House Todd, who is Chief Operations Officer at Fleetcor Technologies, sold 5,000 shares at $120.32 on May 19, 2014. Following this transaction, the Chief Operations Officer owned 5,000 shares meaning that the stake was reduced by 50% with the 5,000-share transaction.

The shares most recently traded at $120.55, up $0.23, or 0.19% since the insider transaction. Historical insider transactions for Fleetcor Technologies go as follows:

  • 4-Week # shares bought: 5,000
  • 4-Week # shares sold: 6,000
  • 12-Week # shares bought: 5,000
  • 12-Week # shares sold: 119,077
  • 24-Week # shares bought: 5,000
  • 24-Week # shares sold: 264,472

The average volume for Fleetcor Technologies has been 934,200 shares per day over the past 30 days. Fleetcor Technologies has a market cap of $10.1 billion and is part of the services sector and diversified services industry. Shares are up 3.84% year-to-date as of the close of trading on Monday.

FleetCor Technologies, Inc. provides fuel cards and workforce payment products and services in North America, Latin America, Europe, Australia, and New Zealand. The company has a P/E ratio of 35.0. Currently, there are 3 analysts who rate Fleetcor Technologies a buy, no analysts rate it a sell, and 3 rate it a hold.

Exclusive Offer: Get the latest Stock Analysis on FLT - FREE

TheStreet Quant Ratings rates Fleetcor Technologies as a buy. The company's strengths can be seen in multiple areas, such as its robust revenue growth, growth in earnings per share, compelling growth in net income, good cash flow from operations and expanding profit margins. We feel these strengths outweigh the fact that the company has had somewhat disappointing return on equity. Get the full Fleetcor Technologies Ratings Report from TheStreet Quant Ratings now.

STOCKS TO BUY: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12 months. Learn more.

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