Adopted Feb. 3, 2020 (20-03).

Adopted Feb. 3, 2020 (20-03).

(a) No member organization shall effect a transaction or accept or carry an account for a customer, whether a member or non-member of the Exchange, without proper and adequate margin in accordance with the Margin Rules set forth in Options 6C, Sections 3 and 7 and Regulation T.

(b) A member organization must elect to be bound by the initial and maintenance margin requirements of either the Chicago Board Options Exchange ("CBOE") or New York Stock Exchange ("NYSE") as the same may be in effect and amended from time to time.

(1) Such election shall be promptly made in writing by a notice filed with the Exchange.

(2) Upon the filing of such election, a member organization shall be bound to comply with the margin rules of CBOE or NYSE, as applicable, as though said rules were part of the Exchange's Margin Rules.

(A) Upon the filing of such election, a member organization engaged in trading Treasury securities options on the Exchange shall, in respect of such trading, comply with the NYSE initial and maintenance margin rules or CBOE margin rules in Chapter XII (not CBOE Government security option margin rules in Chapter XXI). Provided, however, that short Treasury security options traded on the Exchange shall follow the margin percentage requirements for short equity options in NYSE margin rules or the margin percentage requirements for short equity options in CBOE Chapter XII; and provided that portfolio margin shall not be applicable to Treasury securities options.

(c) The margin requirement for any U.S. dollar-settled foreign currency put or call option listed and traded on the Exchange and issued by a registered clearing corporation shall be calculated as follows:

(1) The Exchange will review the five day price movements comparing the base currency against the underlying currency over the most recent three-year period for each foreign currency pair underlying options traded on the Exchange and will set margin levels which would have covered the price changes over the review period at least 97.5% of the time ("confidence level").

(2) Subsequent reviews of five day price changes over the most recent three year period will be performed quarterly on the 15th of January, April, July and October of each year.

(3) If the results of subsequent reviews show that the confidence level for any currency pair has fallen below 97%, the Exchange will increase the margin requirement for that currency up to a 98% confidence level. If the results show a confidence level between 97% and 97.5%, the currency pair will be monitored monthly until the confidence level exceeds 97.5% for two consecutive months. If the results of a monthly review show that the confidence level has fallen below 97%, the margin requirement will be increased to a 98% confidence level. If the results of any review show that the confidence level has exceeded 98.5%, the margin level would be reduced to a level which would provide a 98% confidence level.

(4) The Exchange will also review each currency pair for large price movements outside the margin level ("extreme outlier test"). If the results of any review show a price movement, either positive or negative, of greater than two times the current margin level, the margin requirement for that currency pair will be increased to a confidence level of 99%.

(d) The margin requirement for any Alpha Index put or call option listed and traded on the Exchange and issued by a registered clearing corporation shall be the same as the higher of the margin requirements applicable to options on the two individual components of the index.

Adopted Feb. 3, 2020 (20-03).

Adopted Feb. 3, 2020 (20-03).

Adopted Feb. 3, 2020 (20-03).

Adopted Feb. 3, 2020 (20-03).

(a) No member organization shall permit a customer (other than a broker/dealer or a "designated account") to make a practice, directly or indirectly, of effecting transactions in a cash account where the cost of securities purchased is met by the sale of the same securities. No member organization shall permit a customer to make a practice of selling securities with them in a cash account which are to be received against payment from another broker/dealer where such securities were purchased and are not yet paid for. A member organization transferring an account which is subject to a Regulation T 90-day freeze to another member organization shall inform the receiving member organization of such 90-day freeze.

(b) The provisions of Section 220.8(c) of Regulation T of the Board of Governors of the Federal Reserve System dictate the prohibitions and exceptions against customers' free riding. Member organizations may apply to the Exchange in writing for waiver of a 90-day freeze not exempted by Regulation T.

Adopted Feb. 3, 2020 (20-03).