Terminal · Institutions

Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

MASON STREET ADVISORS, LLC 13F Holdings -- Portfolio & Top Positions (2026-03-31)

MASON STREET ADVISORS, LLC (CIK 1167711) reported $1.02B across 15 reported positions in its SEC 13F filing for 2026-03-31. Largest positions: AGG ($302.7M, 29.58%), IVV ($138.3M, 13.51%), SPTL ($105.2M, 10.28%), SPMD ($92.5M, 9.04%), IEFA ($64.4M, 6.29%). Source: SEC Form 13F.

RankTickerCompanyValue% PortfolioSharesAction
1AGGISHARES TR$302.7M29.58%3.0MTrimmed
2IVVISHARES TR$138.3M13.51%211,681Added
3SPTLSPDR SERIES TRUST$105.2M10.28%4.0MAdded
4SPMDSPDR SERIES TRUST$92.5M9.04%1.6MTrimmed
5IEFAISHARES TR$64.4M6.29%710,997Added
6SPSMSPDR SERIES TRUST$64.1M6.26%1.3MAdded
7RSPINVESCO EXCHANGE TRADED FD T$51.4M5.02%267,820Added
8VLUEISHARES TR$41.0M4.01%288,200New
9IQLTISHARES TR$35.5M3.47%768,930Added
10SCHHSCHWAB STRATEGIC TR$35.4M3.46%1.6MTrimmed
11RWRSPDR SERIES TRUST$35.2M3.44%348,675Trimmed
12JPSTJ P MORGAN EXCHANGE TRADED F$24.6M2.41%486,336Added
13DFIVDIMENSIONAL ETF TRUST$21.3M2.08%403,315Added
14BCIABRDN ETFS$8.7M0.85%356,335Added
15IEMGISHARES INC$3.0M0.30%43,520New
16IJHISHARES TR$00.00%0Exited
17IJRISHARES TR$00.00%0Exited

Source: SEC Form 13F filings · as of 2026-03-31