220 CMR, 50, 123
NOTE A. - Securities and advances of associated companies owned and pledged shall be included in this account, but such securities, if held in special deposits or in special funds, shall be included in the appropriate deposit or fund account. A complete record of securities pledged shall be maintained.
NOTE B. - Securities of associated companies held as temporary cash investments are includible in account 136, Temporary Cash Investments.
NOTE C. - Balances in open accounts with associated companies, which are subject to current settlement, are includible in account 146, Accounts Receivable from Associated Companies.
NOTE D. - The utility may write down the cost of any security in recognition of a decline in the value thereof. Securities shall be written off or written down to a nominal value if there be no reasonable prospect of substantial value. Fluctuations in market value shall not be recorded but a permanent impairment in the value of securities shall be recognized in the accounts. When securities are written off or written down, the amount of the adjustment shall be charged to account 435, Miscellaneous Debits to Surplus, or to an appropriate account for accumulated provisions for loss in value established as a separate subdivision of this account.