Investment Holdings

The trust funds hold special issues—securities sold only to the trust funds. There are 2 types of such securities: short-term certificates of indebtedness and long-term bonds. The certificates of indebtedness are issued on a daily basis, and they mature on the next June 30 following the date of issue. Special-issue bonds, on the other hand, are normally acquired only when special issues of either type mature on June 30.

In the past, the trust funds have held securities available to the public. Currently, no such public issues are held.

Investments held by the Old-Age, Survivors, and Disability Insurance Trust Funds,
at end of year, 2016-2025

Year	Invested amounts (in thousands)				Weighted averages
	Total	Special Issues		Public Issues	Interest rate (%)	Years to maturity
		Bonds	Certificates of indebtedness
2016	$2,847,886,510	$2,789,066,198	$58,820,312	$0	3.032	7.497
2017	2,891,991,968	2,828,799,728	63,192,240	0	2.891	7.448
2018	2,895,174,945	2,825,195,920	69,979,025	0	2.850	7.460
2019	2,897,492,826	2,837,300,690	60,192,136	0	2.711	7.507
2020	2,883,849,494	2,852,329,581	31,519,913	0	2.519	7.036
2021	2,852,126,136	2,790,177,644	61,948,492	0	2.346	6.479
2022	2,829,950,243	2,621,660,148	208,290,095	0	2.329	6.006
2023	2,788,279,904	2,602,782,280	185,497,624	0	2.446	5.568
2024	2,721,304,522	2,549,239,358	172,065,164	0	2.557	5.153