In the context of equitable assignment in supply chain financing, the assignor typically refers to the party transferring the rights to receivables or other assets to another party, known as the assignee. In supply chain financing scenarios involving equitable assignment, the assignor can vary depending on the specific arrangement:

Buyer/Client: The buyer may transfer its right to pay invoices or receive discounts to a financing provider or intermediary in exchange for financing services or early payment to suppliers. For example,.dynamic discounting or reverse factoring, the buyer or client may act as the assignor. 

Supplier: Alternatively, the supplier can also be the assignor in certain supply chain financing setups. For example, if a supplier seeks financing based on its outstanding invoices, it may assign its right to receive payment from the buyer to a financing provider in exchange for immediate cash or financing facilities.

Intermediary: In some cases, an intermediary such as a financial institution, fintech platform, or supply chain finance provider may act as the assignor. The intermediary may facilitate the transfer of receivables or payment rights between buyers and suppliers, allowing them to access financing or optimize cash flow without direct involvement in the transaction.

The assignor initiates the equitable assignment by conveying its rights to the assignee, typically through a legally recognized mechanism such as notification or acknowledgment of the assignment. The assignor may retain certain responsibilities or obligations related to the assigned assets, depending on the terms of the assignment agreement. It's crucial for the assignor to assess the accounting and legal implications of the equitable assignment, including any requirements for derecognition, disclosure, or continued involvement with the assigned assets.