By Mauro Orru

Swiss Re AG said Thursday that it has closed a second private sidecar transaction with Dutch pension fund manager PGGM.

The Swiss reinsurer said the latest deal means PGGM made an overall investment of more than $500 million in Swiss Re's sidecar vehicle Viaduct Re Ltd., a special purpose insurer.

PGGM gained access to part of Swiss Re's core natural catastrophe property treaty reinsurance portfolio through Viaduct Re Ltd., Swiss Re said.

Write to Mauro Orru at mauro.orru@wsj.com; @MauroOrru94