案例库 · 财务与会计 · 技术决策 · 2012–2016
这条还没译成中文，下面是英文原文。
BNY Mellon's optimization cut tri-party repo intraday credit risk by 97%.
Mixed-integer programs rebalance $1.4 trillion of daily collateral, shrinking intraday credit risk in the US tri-party repo market by more than 97%.
BNY Mellon
那一手
After the 2008 crisis, the US Tri-Party Repo Infrastructure Reform Program asked clearing banks to practically eliminate the intraday credit they extended to dealers. BNY Mellon answered with an optimization program rather than a rule change.
Its mixed-integer programming tools — rebalancing, continuous portfolio optimization and the CPO settlement algorithm — process $1.4 trillion of collateral a day, finding ways to unwind and re-pledge securities without intraday funding gaps.
The result: intraday credit risk in BNY Mellon's US tri-party repo market fell more than 97 percent, beating the reform task force's 90 percent goal, with several hundred million dollars in annual savings for dealers. INFORMS named the work a 2016 Edelman finalist.
为什么管用
- Collateral is matched and rebalanced continuously instead of once at day's end.
- The optimizer respects client liquidity needs, so risk falls without breaking the market.
- The $1.4 trillion daily scale made even tiny inefficiencies worth eliminating.
可以搬走什么
When a reform demands a risk cut that seems impossible, solve the matching problem daily: optimization turns a market-wide mandate into a routine operation.
后来呢
The tri-party reform program was completed in 2015, and the BNY Mellon models became part of how US tri-party repo settles. The Interfaces paper documenting the system is cited in market-structure and OR practice literature.
资料来源
- 2016 Edelman Finalist Announcement (via Internet Archive)
- BNY Mellon Optimization Reduces Intraday Credit Risk by $1.4 Trillion (Interfaces 47(1), 2017)
- BNY Mellon Optimization Reduces Intraday Credit Risk by $1.4 Trillion (IFORS abstract)
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