17 C.F.R. § 240.13f-1
(a)
(c) For purposes of this rule “section 13(f) securities” shall mean equity securities of a class described in section 13(d)(1) of the Act that are admitted to trading on a national securities exchange or quoted on the automated quotation system of a registered securities association. In determining what classes of securities are section 13(f) securities, an institutional investment manager may rely on the most recent list of such securities published by the Commission pursuant to section 13(f)(4) of the Act (15 U.S.C. 78m(f)(4)). Only securities of a class on such list shall be counted in determining whether an institutional investment manager must file a report under this rule (§ 240.13f-1(a)) and only those securities shall be reported in such report. Where a person controls the issuer of a class of equity securities which are “section 13(f) securities” as defined in this rule, those securities shall not be deemed to be “section 13(f) securities” with respect to the controlling person, provided that such person does not otherwise exercise investment descretion with respect to accounts with fair market value of at least $100,000,000 within the meaning of paragraph (a) of this section.
(Secs. 3(b), 13(f) and 23 of the Exchange Act (15 U.S.C. 78c(b), 78m(f) and 78w))
[43 FR 26705, June 22, 1978, as amended at 44 FR 3034, Jan. 15, 1979; 64 FR 2849, Jan. 19, 1999; 76 FR 71876, Nov. 21, 2011]