Hallstatt Advisors L.P. has disclosed its latest investment holdings in a filing, revealing a total portfolio value of approximately $110.6 million as of September 30, 2026. This update is significant as it illustrates the firm's investment strategies and market positioning within the asset management sector.
Hallstatt Advisors L.P. is a Delaware-based investment management firm. The company is categorized under the SEC's other entity type and has a Central Index Key (CIK) of 0002040638. The firm has made several recent filings, including its latest 13F-HR on November 6, 2026, which details its holdings as of the end of the third quarter.
The recent filing indicates that Hallstatt Advisors holds investments in a diverse range of companies. Notably, the firm has significant stakes in GFL Environmental Inc., Casella Waste Systems Inc., and Solaris Energy Infras Inc., among others. Specifically, the report shows that Hallstatt owns 249,378 shares of GFL Environmental, valued at approximately $10.4 million, and 182,089 shares of Casella Waste Systems, valued at about $14.6 million.
In total, Hallstatt Advisors reported holdings in 13 different companies, with a combined value of $110,583,430. This diverse portfolio reflects the firm's investment discretion, as it exercises sole voting authority over all its holdings.
This filing may have implications for various stakeholders, including investors and competitors in the asset management industry. By revealing its investment choices, Hallstatt Advisors provides insights into its strategic focus and market outlook, which could influence market dynamics and investor sentiment.
Looking ahead, the filing does not specify what actions Hallstatt Advisors may take next regarding its investments. However, the firm’s continued reporting will likely provide further updates on its portfolio and investment strategies in the coming months.
Read Next
Waratah Capital Advisors reports $2.4B in latest holdings
WIN Advisors reveals $262M in investments in latest filing
Barclays Capital Luxembourg Files Latest 13F-NT Report
CLEAR Investment Research files 13F-HR for Q3 2026
AG Asset Advisory reports $138 million in holdings
AEW Capital Management reveals latest investment portfolio









