1. High debt levels - Turquoise Hill Resources Ltd has a high debt-to-equity ratio compared to its peers, which can limit its financial flexibility and increase its risk profile.

2. Limited diversification - The company's portfolio is heavily focused on copper and gold mining, which makes it vulnerable to fluctuations in commodity prices and market demand.

3. Dependence on a single asset - Turquoise Hill Resources Ltd's primary asset is the Oyu Tolgoi copper-gold mine in Mongolia, which accounts for a significant portion of its revenue. Any disruptions or operational issues at the mine could have a significant impact on the company's financial performance.

4. Political and regulatory risks - The company operates in Mongolia, which has a history of political instability and regulatory uncertainty. Changes in government policies or regulations could negatively impact the company's operations and profitability.

5. Limited production growth - Turquoise Hill Resources Ltd's production growth has been relatively slow compared to its peers, which could limit its ability to capitalize on favorable market conditions and expand its market share.

6. Limited exploration and development activities - The company has limited exploration and development activities compared to its peers, which could limit its ability to discover new reserves and expand its resource base.