Top Three 'Insider Cluster' Jams


Recent GuruFocus studies show several "insider cluster" buys made in the last month. "Insider clusters" are defined as concentrated purchases or sells made by a company's executive members at a specific time.

Calamos Asset Management Inc. ( CLMS )

Calamos Asset Management Inc. ( CLMS ), a diversified investment management firm, lists 12 insider buys in the last month. Six executives of Calamos Asset Management bought their company stock in March 2013, at a price ranging from $10.99 to $11.66. Ten-percent owner John P. Calamos Sr. made four buys in March, bringing his total CLMS shares to 1,089,029.

Calamos Asset Management Inc. provides investment advisory services to individuals and institutional investors through open-end funds, closed-end funds, separate accounts, offshore funds and partnerships.

The global firm based in Illinois has a market cap of $233.2 million, and a P/E ratio of 12.69, a P/B ratio of 1.17, and a P/S ratio of 0.7227.

See CLMS insider trading vs. price since 2010:

Opko Health Inc. ( OPK )

Dr. Phillip Frost, the CEO and chairman of Opko Health, Inc. continues to amass ownership of this company. In 2012, Frost held 11,000,000 shares valued at over $50 million, for an approximate 40% share of the company. He continues to increase his position with most recent OPK buys on March 18, 2012. As of the latest filings on March 18, 2013, Frost Gamma Investment Trusts owns 15,490,546 shares of the multi-national, biopharmaceutical and diagnostics company that promotes discovery and development of its expertise and proprietary technologies.

Miami-based Opko Health Inc. ( OPK ) has a market cap of $2.2 billion, a P/B ratio of 15.2, and a P/S ratio of 15.2. OPK stock is trading today at $7.46.

See OPK insider trading vs. price since 2010:

California Water Service Group ( CWT )

The San Jose company, California Water Service Group ( CWT) , listed 20 insider buys of its company stock in the last month. As of March 5, 2013, CEO Peter C. Nelson bought 12, 504 shares at a price of $20.62, with a change down 2.52% since the trade. Nelson now holds 219,672 CWT shares.

Guru Thomas F. Smegal III, the company's vice president of finance and CFO, also added to his position with 3,001 shares at the same price of $20.62. Smegal now owns 37,504 CWT shares.

California Water Service Group, has a market cap of $8.41 billion.

See CWT insider trading vs. price since 2010:

About GuruFocus: tracks the stocks picks and portfolio holdings of the world's best investors. This value investing site offers stock screeners and valuation tools. And publishes daily articles tracking the latest moves of the world's best investors. GuruFocus also provides promising stock ideas in 3 monthly newsletters sent to Premium Members .

The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of The NASDAQ, Inc.

This article appears in: Investing

Referenced Stocks: CLMS , CWT , OPK



More from GuruFocus:

Related Videos



Most Active by Volume

  • $15.38 ▼ 1.09%
  • $110.38 ▲ 0.73%
  • $104.01 ▲ 1.75%
  • $6.3801 ▼ 53.60%
  • $4.25 ▲ 4.94%
  • $15.91 ▲ 7.72%
  • $4.64 ▲ 11.27%
  • $25.47 ▲ 1.11%
As of 10/2/2015, 04:15 PM

Find a Credit Card

Select a credit card product by:
Select an offer:
Data Provided by