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Key implications for investment limits, borrowing and funds - simmons-simmons.com

Reported by Simmons-simmons
Dec 19, 2025· 2 min read
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Key Takeaways
  • • CSSF Circular 25/901 introduces updated guidance on investment policies for Part II UCIs, establishing clearer frameworks for fund borrowing, investment restrictions, and leverage limitations to align with regulatory objectives around financial stability and risk management.
  • • Part II UCIs may now borrow cash for investment purposes, liquidity management, expense coverage, and redemption fulfillment, but borrowing capacity remains constrained by regulatory leverage ratios tied to total fund assets.
  • • Securities lending is capped at one-third of a fund's total value, with strict limits on the amount of securities that may be on loan at any time to ensure adequate liquidity and capital preservation.
  • • Investment limits explicitly prohibit using target fund investments to circumvent regulatory restrictions or artificially concentrate risk exposure, closing a potential loophole in fund structure design.
  • • Regulatory framework balances leverage efficiency with systemic risk mitigation, limiting portfolio leverage ratios and establishing diversification requirements tied to investment objectives and fund risk profiles.
Summary
CSSF Circular 25/901 represents a significant refinement of the regulatory framework governing collective investment schemes, particularly Part II UCIs (Undertakings for Collective Investment). The circular provides enhanced precision on investment policies, borrowing restrictions, and leverage limitations that institutional investors and fund managers must integrate into operational and compliance frameworks.

The updated guidance permits Part II UCIs to access borrowing facilities for multiple purposes—including direct investment activities, liquidity management, operational expense coverage, and redemption obligations. However, this expanded borrowing capacity operates within defined leverage constraints. Regulators have established ratios limiting a fund's total leverage relative to its net assets, reflecting a calibrated approach to managing systemic risk while preserving fund operational flexibility. This balance recognizes that leverage can enhance return efficiency and lower implementation costs, but unconstrained borrowing amplifies downside exposure during market stress.

Securities lending activity faces explicit quantitative boundaries: funds may not maintain securities on loan exceeding one-third of total fund value at any point in time. This restriction preserves adequate liquidity buffers and protects fund capital against counterparty concentration risk inherent in securities lending arrangements.

A critical protective provision in Circular 25/901 prohibits using investments in target funds as a mechanism to circumvent investment limits or artificially manipulate risk exposure. This closure addresses a structural vulnerability where cascading fund-of-funds structures could obscure ultimate exposure concentration. Portfolio diversification requirements remain tied directly to each fund's stated investment objectives and documented risk profile, ensuring that regulatory constraints reflect fund-specific circumstances rather than one-size-fits-all mandates.

The regulatory framework acknowledges that investment funds present distinct financial stability considerations, particularly when analyzing aggregate exposures across fund families to sovereign debt, equity markets, or other concentrated asset classes. CSSF guidance encourages regulators to consider capping total fund family exposure to individual country debt markets, balancing investor protection against overly restrictive capital allocation constraints.

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Simmons-simmons Key implications for investment limits, borrowing and funds - simmons-simmons.com