The below table details TBA assets, liabilities, and the respective related payables and receivables as of June 30, 2018 and December 31, 2017: | | | | | | | | | | | | As of | | | June 30, 2018 | | December 31, 2017 | | | (In thousands) | Assets: | | | | | TBA securities, at fair value (Current principal: $306,847 and $118,806, respectively) | | $ | 317,013 |
| | $ | 123,680 |
| Receivable for securities sold relating to unsettled TBA sales | | 617,433 |
| | 460,666 |
| Liabilities: | | | | | TBA securities sold short, at fair value (Current principal: -$608,800 and -$442,197, respectively) | | $ | (618,665 | ) | | $ | (460,189 | ) | Payable for securities purchased relating to unsettled TBA purchases | | (317,088 | ) | | (123,918 | ) | Net short TBA securities, at fair value | | (301,652 | ) | | (336,509 | ) |
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