Effective Liquidity Management in Fixed Income

As a fixed income portfolio manager at a medium-sized asset management firm, you have been tasked with ensuring adequate liquidity in your bond portfolio while also maintaining a competitive yield. Given the current market environment, characterized by increased volatility and unexpected economic shifts, you need to evaluate strategies that can best balance liquidity needs with investment returns.

Considering your firm's liquidity policy and investment horizon, which of the following strategies would be the most effective in managing liquidity within your fixed income portfolio?