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.
Calamos Asset Management Inc. (
), 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
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.
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.
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
The San Jose company, California Water Service Group (
, 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
See CWT insider trading vs. price since 2010:
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