Investments | 4. Investments were as follows as of March 31, 2022 and December 31, 2021: Gross Gross Unrealized Unrealized Fair Carrying Description Cost Gains Losses Value Value (in thousands) March 31, 2022 Nuclear decommissioning trust (1) Debt securities $ 85,137 $ — $ (3,285 ) $ 81,852 $ 81,852 Equity securities 93,280 84,236 (2,926 ) 174,590 174,590 Cash and other 418 — — 418 418 Total Nuclear Decommissioning Trust $ 178,835 $ 84,236 $ (6,211 ) $ 256,860 $ 256,860 Unrestricted investments Government obligations $ 5,568 $ — $ (20 ) $ 5,548 $ 5,568 Total Unrestricted Investments $ 5,568 $ — $ (20 ) $ 5,548 $ 5,568 Other Equity securities $ 184 $ 48 $ — $ 232 $ 232 Non-marketable equity investments 2,149 2,203 — 4,352 2,149 Total Other $ 2,333 $ 2,251 $ — $ 4,584 $ 2,381 $ 264,809 December 31, 2021 Nuclear decommissioning trust (1) Debt securities $ 84,701 $ 4,052 $ — $ 88,753 $ 88,753 Equity securities 92,916 94,923 (408 ) 187,431 187,431 Cash and other 474 — — 474 474 Total Nuclear Decommissioning Trust $ 178,091 $ 98,975 $ (408 ) $ 276,658 $ 276,658 Other Equity securities $ 157 $ 55 $ — $ 212 $ 212 Non-marketable equity investments 2,149 2,370 — 4,519 2,149 Total Other $ 2,306 $ 2,425 $ — $ 4,731 $ 2,361 $ 279,019 (1) Investments in the nuclear decommissioning trust are restricted for the use of funding our share of the asset retirement obligations of the future decommissioning of North Anna. See Note 3 of the Notes to Consolidated Financial Statements in our 2021 Annual Report on Form 10-K. Unrealized gains and losses on investments held in the nuclear decommissioning trust are deferred as a regulatory liability or regulatory asset, respectively. Contractual maturities of debt securities as of March 31, 2022, were as follows: Description Less than 1 year 1-5 years 5-10 years More than 10 years Total (in thousands) Other (1) $ — $ — $ 81,852 $ — $ 81,852 Held to maturity 5,568 — — — 5,568 Total $ 5,568 $ — $ 81,852 $ — $ 87,420 (1) The contractual maturities of other debt securities are measured using the effective duration of the bond fund within the nuclear decommissioning trust. |