Commodity Futures Trading Commission ♦ Office of Public Affairs ♦ 202-418-5080 

Commodity Futures Trading Commission 

Office of Public Affairs 

Three Lafayette Centre 

1155 21st Street, NW 

Washington, DC 20581 

www.cftc.gov

Final Rulemaking on Procedures to Establish Appropriate Minimum Block 

Sizes for Large Notional Off-Facility Swaps and Block Trades; Further 

Measures to Protect the Identities of Parties to Swap Transactions

The Commodity Futures Trading Commission (Commission) is adopting a final rule that groups swaps into 

separate swap categories, establishes methodologies for setting appropriate minimum block sizes for block trades 

and large notional off-facility swaps in each category, and prevents disclosure of the identities of swap 

counterparties in connection with the real-time public reporting of swap transaction and pricing data. The final 

rulemaking implements provisions of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010

(Dodd-Frank Act).

Dodd-Frank Wall Street Reform and Consumer Protection Act (Dodd-Frank Act)

On July 21, 2010, President Obama signed the Dodd-Frank Act, which amended the CEA to establish a 

comprehensive new regulatory framework for swaps and security-based swaps.

Section 727 of the Dodd-Frank Act amends the Commodity Exchange Act (“CEA”) by inserting Section 2(a)(13). 

Section 2(a)(13) sets out several requirements that are relevant to the rules the Commission is adopting. First, this 

section requires public availability of swap transaction data in such form and at such times as the Commission 

determines appropriate to enhance price discovery. Section 2(a)(13) further requires the Commission to specify 

criteria for determining what constitutes a “large notional swap transaction (block trade)” for the purposes of 

applying time delays for reporting such transactions to the public. Finally, Section 2(a)(13) requires the Commission 

to protect the identities and maintain the anonymity of business transactions and market positions of swap 

counterparties. 

Establish Appropriate Minimum Block Sizes and Protect Swap Counterparty Identities

The final rule: (1) specifies the criteria for determining swap categories and methodologies for determining the 

appropriate minimum block sizes for large notional off-facility swaps and block trades; and (2) provides increased 

protections for the identities of swap counterparties to large swap transactions and certain other commodity swaps.

 
Commodity Futures Trading Commission ♦ Office of Public Affairs ♦ 202-418-5080 

Swap Categories in Each Asset Class

The final rule sets forth specific swap categories within the five asset classes previously established by the real-time 

reporting final rule: interest rate, credit, equity, foreign exchange, and other commodity. Swaps within each asset 

class are generally grouped based on common risk and liquidity profiles, as determined by the Commission. 

Setting Minimum Block Sizes

The final rule provides that the Commission will set appropriate minimum block sizes for the swap categories 

within each asset class. The rule implements a two-period, phased-in approach. The Commission prescribes 

appropriate minimum block sizes during an initial period, which would last until registered swap data repositories 

have collected at least one year of reliable data for each asset class. The Commission then will analyze and use this 

data to establish post-initial appropriate minimum block sizes for each swap category using a 67-percent notional 

amount calculation. The Commission will update these post-initial appropriate minimum block sizes no less than 

once a year.

Anonymity Provisions

The final rule establishes measures to protect the identities of swap counterparties and to maintain the anonymity of 

their business transactions and market positions in connection with the public dissemination of publicly reportable 

swap transactions.

The rule amends existing Commission regulations to establish cap sizes for notional and principal amounts that 

mask the total size of a swap transaction based upon a 75-percent notional amount calculation for a given swap 

category. The term cap size is defined as the maximum limit of the principal or notional amount of a swap that is 

publicly disseminated.

The rule also establishes limits on the public dissemination of certain publicly reportable swap transactions in the 

other commodity asset class, which have specific delivery or pricing points.