AP4 (Fjärde AP-fonden)

Overview

Statutory buffer fund for Sweden's national income-pension system, tracing its lineage to a 'Fourth Fund Board' established in 1974 (states an average annual return of 13% since then, having transferred roughly SEK 66 billion net to the pension system over 50 years). AUM reported at SEK 578.1 billion (standalone) at year-end 2025; rose to roughly SEK 833.8 billion as co-recipient (with AP3) of the dissolved AP1's assets and liabilities effective 1 January 2026, under a government-mandated AP-fund consolidation reform.

Key Facts

Type

Pension Fund

Geography focus

Sweden and global developed markets