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MASON STREET ADVISORS, LLC

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13F filer, CIK 1167711, MILWAUKEE, WI

MASON STREET ADVISORS, LLC reported $1,016,329,185 across 15 holdings for the quarter ended 2025-12-31, in a 13F-HR filed 2026-02-04. Its ten largest share positions make up 91.64% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001167711-26-000001

Period
2025-12-31
Reported value
$1.02B
Holdings
15
Top 10 weight
91.64%
New
2
Sold out
2

Largest buys vs the previous quarter

SecurityShares changeApprox. value
IJRnew+639,005$57.2M
IJHnew+289,860$39.6M
RSPadded+106,820$20.5M
SPMDadded+225,190$13M
AGGadded+67,900$6.78M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
IEFAreduced-626,055-$42.1M
VLUEexited-320,000-$40M
DFIVreduced-49,750-$2.48M
BCIreduced-61,930-$1.21M
IEMGexited-3,350-$221K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q4 2025

Share positions as resolved from 13F-HR 0001167711-26-000001, largest first. % of portfolio is the value over $1,016,329,185, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
AGGISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,521,600 shares; 2024Q4: 2,575,800 shares; 2025Q1: 2,545,100 shares; 2025Q2: 2,792,394 shares; 2025Q3: 3,039,330 shares; 2025Q4: 3,107,230 shares 3,107,230$310M30.54%+67,900Timeline
IVVISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 303,250 shares; 2024Q4: 287,750 shares; 2025Q1: 291,550 shares; 2025Q2: 269,950 shares; 2025Q3: 209,670 shares; 2025Q4: 210,793 shares 210,793$144M14.21%+1,123Timeline
SPTLSPDR SERIES TRUSTQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 3,700,000 shares; 2024Q4: 3,700,000 shares; 2025Q1: 3,693,100 shares; 2025Q2: 3,874,900 shares; 2025Q3: 3,962,640 shares; 2025Q4: 3,997,680 shares 3,997,680$106M10.41%+35,040Timeline
SPMDSPDR SERIES TRUSTQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 720,900 shares; 2024Q4: 811,500 shares; 2025Q1: 927,600 shares; 2025Q2: 927,600 shares; 2025Q3: 1,362,200 shares; 2025Q4: 1,587,390 shares 1,587,390$91.9M9.04%+225,190Timeline
SPSMSPDR SERIES TRUSTQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 740,700 shares; 2024Q4: 853,500 shares; 2025Q1: 853,500 shares; 2025Q2: 1,088,800 shares; 2025Q3: 1,163,700 shares; 2025Q4: 1,293,880 shares 1,293,880$60.6M5.97%+130,180Timeline
IJRISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 133,700 shares; 2024Q4: 51,600 shares; 2025Q1: 51,600 shares; 2025Q2: 42,600 shares; 2025Q3: not reported; 2025Q4: 639,005 shares 639,005$57.2M5.62%newTimeline
RSPINVESCO EXCHANGE TRADED FD TQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 133,100 shares; 2025Q2: 133,100 shares; 2025Q3: 152,610 shares; 2025Q4: 259,430 shares 259,430$49.7M4.89%+106,820Timeline
IJHISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 335,500 shares; 2024Q4: 248,400 shares; 2025Q1: 168,800 shares; 2025Q2: 98,600 shares; 2025Q3: not reported; 2025Q4: 289,860 shares 289,860$39.6M3.9%newTimeline
RWRSPDR SERIES TRUSTQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 337,500 shares; 2024Q4: 320,500 shares; 2025Q1: 320,500 shares; 2025Q2: 320,500 shares; 2025Q3: 355,805 shares; 2025Q4: 366,555 shares 366,555$36M3.54%+10,750Timeline
SCHHSCHWAB STRATEGIC TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,555,500 shares; 2024Q4: 1,486,000 shares; 2025Q1: 1,486,000 shares; 2025Q2: 1,486,000 shares; 2025Q3: 1,627,170 shares; 2025Q4: 1,713,085 shares 1,713,085$35.8M3.52%+85,915Timeline
IQLTISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 692,700 shares; 2025Q3: 751,440 shares; 2025Q4: 748,240 shares 748,240$34M3.35%-3,200Timeline
JPSTJ P MORGAN EXCHANGE TRADED FQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 216,650 shares; 2024Q4: 216,650 shares; 2025Q1: 216,650 shares; 2025Q2: 216,650 shares; 2025Q3: 468,570 shares; 2025Q4: 480,735 shares 480,735$24.3M2.39%+12,165Timeline
DFIVDIMENSIONAL ETF TRUSTQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 414,700 shares; 2025Q3: 443,115 shares; 2025Q4: 393,365 shares 393,365$19.6M1.93%-49,750Timeline
BCIABRDN ETFSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,029,600 shares; 2024Q4: 304,900 shares; 2025Q1: 304,900 shares; 2025Q2: 304,900 shares; 2025Q3: 399,645 shares; 2025Q4: 337,715 shares 337,715$6.6M0.65%-61,930Timeline
IEFAISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 920,400 shares; 2024Q4: 1,033,700 shares; 2025Q1: 899,800 shares; 2025Q2: 571,900 shares; 2025Q3: 631,755 shares; 2025Q4: 5,700 shares 5,700$383K0.04%-626,055Timeline

Sold out in Q4 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
VLUEISHARES TR320,000$40Mshares
IEMGISHARES INC3,350$221Kshares

How Q4 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001167711-26-000001 base2026-02-04acceptance time not in the bulk data set