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4210. Margin Requirements

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(a) Definitions
For purposes of this Rule, the following terms shall have the meanings specified below:
(1) The term "basket" shall mean a group of stocks that FINRA or any national securities exchange designates as eligible for execution in a single trade through its trading facilities and that consists of stocks whose inclusion and relative representation in the group are determined by the inclusion and relative representation of

4160. Verification of Assets

(a) A member, when notified by FINRA, may not continue to custody or retain record ownership of assets, whether such assets are proprietary or customer assets, at a financial institution that is not a member of FINRA, which, upon FINRA staff's request, fails promptly to provide FINRA with written verification of assets maintained by the member at such financial institution.
(b) The Rule shall not apply:
(1) to proprie

4150. Guarantees by, or Flow Through Benefits for, Members

(a) Prior written notice shall be given to FINRA whenever any member guarantees, endorses or assumes, directly or indirectly, the obligations or liabilities of another person.
(b) Prior written approval must be obtained from FINRA whenever any member receives flow through capital benefits in accordance with Appendix C of SEA Rule 15c3-1.

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4140. Audit

(a) FINRA may at any time, due to concerns regarding the accuracy or integrity of a member's financial statements, books and records or prior audited financial statements, direct any member to cause an audit to be made by an independent public accountant of its accounts, or cause an examination to be made in accordance with attestation, review or consultation standards prescribed by the AICPA.

4130. Regulation of Activities of Section 15C Members Experiencing Financial and/or Operational Difficulties

(a) Application - For purposes of this Rule, the term "member" shall be limited to any member of FINRA registered with the SEC pursuant to Section 15C of the Exchange Act that is not designated to another self-regulatory organization by the SEC for financial responsibility pursuant to Section 17 of the Exchange Act and SEA Rule 17d-1.
(b) Each member subject to Section 402.2 of the rules of the Treasury Department shall comply with the capital requirements prescribed therein and wi

4120. Regulatory Notification and Business Curtailment

(a) Notification
(1) Each carrying or clearing member shall promptly, but in any event within 24 hours, notify FINRA in writing if its net capital falls below the following percentages:
(A) the member's net capital is less than 150 percent of its minimum dollar net capital requirement or such greater percentage thereof as may from time to time be designated by FINRA;
(B) the member is subject to the aggregate indeb

4110. Capital Compliance

(a) When necessary for the protection of investors or in the public interest, FINRA may, at any time or from time to time with respect to a particular carrying or clearing member or all carrying or clearing members, pursuant to authority exercised by FINRA's Executive Vice President charged with oversight for financial responsibility, or his or her written officer delegate, prescribe greater net capital or net worth requirements than those otherwise applicable, including more stringent treatment of items in computing net capital or net worth, or require such membe