Menu User account menu Search Portfolio Security Operations This page includes ICI memos, comment letters, white papers, and other resources related to regulatory and industry initiatives affecting portfolio securities operations, derivatives, and trading and markets. Derivatives Eligible Collateral Under UK Margin BTS - EEA UCITS (pdf) ICI Comment Letter to CFTC and SEC on Portfolio Margining (pdf) ICI Comment Letter on SEC Proposed Exemptive Order on Portfolio Margining (pdf) Portfolio Securities Clearance and Settlement ICI Comment Letter to CFTC and SEC on Portfolio Margining (pdf) ICI Comment Letter on SEC Proposed Exemptive Order on Portfolio Margining (pdf) ICI Comment Letter in Response to Swap Data Repository Rulebook (pdf) Trading and Markets (Domestic) ICI Joint Letter to SEC on Application of Rule 15c2-11 to Fixed Income (pdf) Rule 17a-7 at the Crossroads: Supplemental Information on Equity Cross Trading (pdf) Joint Letter to SEC on Accelerating the Securities Settlement Cycle to T+1 (pdf) Footer menu GENERAL About ICI About ICI Global About IDC About ICIEF HELPFUL LINKS Privacy and Cookie Policy Apply for User Account COVID-19 Report Contact Us ICI RESOURCES Comment Letters ICI Viewpoints ICI Fact Book Resource Centers MEMBER RESOURCES Business Continuity Copyright © 2021 by the Investment Company Institute Privacy Privacy and Cookie Policy Social Facebook LinkedIn Twitter YouTube