Dupage Policy Journal

After projecting its investments would grow by 6.75 percent, the Oak Brook Police Pension Fund netted 6.54 percent on its investments in 2016, according to data reported to the Illinois Department of Insurance Pension Division.

The DOI biennial report detailing the health of each of the pension funds shows the Oak Brook Police Pension Fund's had $33,432,152 in investment assets last year. It paid $81,459 in investment expenses and gained $2,267,532 in investment income.

Pension funds and retirement systems set actuarial assumptions to project returns on investments to cover obligations to pensioners. When they fall short, the difference has to be made up from other sources – primarily from taxpayers and member contributions.

	2012	2013	2014	2015	2016
Investment assets	$29,695,196	$32,479,164	$32,851,088	$31,739,250	$33,432,152
Investment expenses	$83,244	$79,745	$74,889	$83,213	$81,459
Investment income	$2,500,382	$3,469,925	$1,154,770	-$341,174	$2,267,532
Net investment income to assets	8.14%	10.44%	3.29%	-1.34%	6.54%
Actuarial assumption	6.75%	6.75%	6.75%	6.75%	6.75%