As a portfolio manager, you have been assigned to rebalance a client’s investment portfolio, which includes equities, fixed income, and alternative assets. The current market conditions are volatile, with high trading volumes and significant price movements.

Discuss the different execution strategies that can be utilized during this rebalancing process. In your response, emphasize how the choice of execution strategy can impact transaction costs, market impact, and overall portfolio performance. Provide specific examples of execution strategies, their advantages, and disadvantages in the context of the current market conditions.