market folly

Stockbridge Partners has filed a 13G with the SEC regarding shares of Advanced Drainage Systems (WMS).  Per the filing, Stockbridge now owns 6.9% of the company with over 3.66 million shares.

This is up from the 2.86 million shares they owned at the end of the second quarter.  The filing was made due to activity on August 18th.

Some of their other holdings include Transdigm (TDG), Markwest Energy (MWE), Charter Communications (CHTR), LPL Financial (LPLA), Wabco (WBC), among others.


About Stockbridge Partners

This is the first time we've featured Stockbridge.  It's part of the Berkshire Partners umbrella, a private equity firm.  Per their website, Stockbridge takes "positions in public securities with a bias toward being long-term investors, focusing on high quality companies that exhibit earnings sustainability and growth.  We accept short-term volatility - and in many cases, view price fluctuations more as opportunities than as risks."  It was launched in 2007 and manages over $2 billion with Robert Small directing the group.


About Advanced Drainage Systems

Per Google Finance, Advanced Drainage Systems is "a designer, manufacturer and marketer of high performance thermoplastic corrugated pipe and related water management products, primarily in North and South America and Europe. The Company is managed based primarily on the geographies in which it operates and reports results of operations in two reportable segments Domestic and International. The Company’s products are used across a range of end markets and applications, including non-residential, residential, agriculture and infrastructure applications. The Company’s product line includes corrugated high density polyethylene (HDPE) pipe, polypropylene (PP) pipe and related water management products."