Financial Code section 1584
(a)
In a manner such that all certificates representing the stock or other securities from time to time constituting the assets of a particular estate, trust or other fiduciary account are held separate from those of all other estates, trusts or accounts; or(b)
In a manner such that, without certification as to ownership attached, certificates representing stock or other securities of the same class of the same issuer and from time to time constituting assets of particular estates, trusts or other fiduciary accounts are held in bulk, including, to the extent feasible, the merging of certificates of small denomination into one or more certificates of large denomination, provided that a trust company, when operating under the method of safekeeping security certificates described in this subdivision, shall be subject to such rules and regulations as, in the case of state chartered institutions, the commissioner and, in the case of national bank associations, the Comptroller of the Currency, may from time to time issue. Such trust company shall, on demand by any party to an accounting by such trust company as fiduciary or on demand by the attorney for such party, certify in writing the stock or other securities held by such trust company as such fiduciary for such party.
Source:
Section 1584, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FIN§ionNum=1584.
(accessed Apr. 24, 2025).