Except as provided in subsection (b), the rights and remedies provided by this subchapter shall be in addition to any and all other rights and remedies that may exist at law or in equity.
Notwithstanding subsection (b) or (c), a covered class action described in subparagraph (B) of this paragraph that is based upon the statutory or common law of the State in which the issuer is incorporated (in the case of a corporation) or organized (in the case of any other entity) may be maintained in a State or Federal court by a private party.
Notwithstanding any other provision of this section, nothing in this section may be construed to preclude a State or political subdivision thereof or a State pension plan from bringing an action involving a covered security on its own behalf, or as a member of a class comprised solely of other States, political subdivisions, or State pension plans that are named plaintiffs, and that have authorized participation, in such action.
Notwithstanding subparagraph (A), the term “covered class action” does not include an exclusively derivative action brought by one or more shareholders on behalf of a corporation.
For purposes of this paragraph, a corporation, investment company, pension plan, partnership, or other entity, shall be treated as one person or prospective class member, but only if the entity is not established for the purpose of participating in the action.
Nothing in this paragraph shall be construed to affect the discretion of a State court in determining whether actions filed in such court should be joined, consolidated, or otherwise allowed to proceed as a single action.
The term “covered security” means a security that satisfies the standards for a covered security specified in paragraph (1) or (2) of section 77r(b) of this title at the time during which it is alleged that the misrepresentation, omission, or manipulative or deceptive conduct occurred, except that such term shall not include any debt security that is exempt from registration under this subchapter pursuant to rules issued by the Commission under section 77d(2)  of this title.