Settlement: What Did Wall Street Learn, and What Must Change Before 2027?

Settlement changes are reshaping global markets by releasing billions in clearing capital, while also exposing weaknesses in Wall Street’s post-trade infrastructure. In the U.S., the transition to T+1—implemented on May 28, 2024—reduced most securities settlement cycles from two business days to one. The report estimates clearing fund requirements fell by about $3.7 billion versus the previous quarter’s average, reflecting lower exposure to unsettled transactions and potentially less counterparty capital held against obligations. Early performance improved: by May 29, 2024, around 94.55% of transactions were affirmed by 9 p.m. ET on trade date, up from 73% at the end of January. But as Europe prepares for its October 2027 transition, failed trades are rising faster than volumes: 2025 saw settlement activity up 15% while failed trades grew 21%. Only 33% of European middle offices had automated standing settlement instruction storage and exchange, leaving less time to resolve mismatches under tighter windows.