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MSA

Mason Street Advisors Portfolio holdings

AUM $1.11B Turnover 12.5%
1-Year Est. Return 12.31%
This Fund
S&P 500
This Quarter Est. Return
+3.85%
1 Year Est. Return
+12.31%
3 Year Est. Return
+31.97%
5 Year Est. Return
+20.99%
10 Year Est. Return
+189.77%
AUM
$965M
AUM Growth
+$110M
Cap. Flow
+$76.7M
Cap. Flow %
7.95%
Top 10 Hldgs %
91.5%
Holding
17
New
2
Increased
12
Reduced
1
Closed
2
Avg Time Held
2 years
Top 10 Avg Time Held
1.9 years
Top 20 Avg Time Held
1.7 years

Top Buys

Rank Stock Value
1
VLUE icon
iShares MSCI USA Value Factor ETF
VLUE
+$37.7M
2
AGG icon
iShares Core US Aggregate Bond ETF
AGG
+$24.5M
3
SPMD icon
State Street SPDR Portfolio S&P 400 Mid Cap ETF
SPMD
+$24.5M
4
JPST icon
JPMorgan Ultra-Short Income ETF
JPST
+$12.8M
5
IEFA icon
iShares Core MSCI EAFE ETF
IEFA
+$5.09M

Top Sells

Rank Stock Value
1
IVV icon
iShares Core S&P 500 ETF
IVV
+$38.8M
2
IJH icon
iShares Core S&P Mid-Cap ETF
IJH
+$6.12M
3
IJR icon
iShares Core S&P Small-Cap ETF
IJR
+$4.66M

Sector Composition

Rank Sector Weight
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow Held Since
AGG icon
1
iShares Core US Aggregate Bond ETF
AGG
$138B
$305M 31.58%
3,039,330
+246,936
+9% +$24.5M
2017 Q1
34 quarters
IVV icon
2
iShares Core S&P 500 ETF
IVV
$885B
$140M 14.55%
209,670
-60,280
-22% -$38.8M
2021 Q2
17 quarters
SPTL icon
3
State Street SPDR Portfolio Long Term Treasury ETF
SPTL
$11.3B
$107M 11.07%
3,962,640
+87,740
+2% +$2.32M
2024 Q2
5 quarters
SPMD icon
4
State Street SPDR Portfolio S&P 400 Mid Cap ETF
SPMD
$18.2B
$77.9M 8.07%
1,362,200
+434,600
+47% +$24.5M
2024 Q2
5 quarters
IEFA icon
5
iShares Core MSCI EAFE ETF
IEFA
$191B
$55.2M 5.72%
631,755
+59,855
+10% +$5.09M
2022 Q1
14 quarters
SPSM icon
6
State Street SPDR Portfolio S&P 600 Small Cap ETF
SPSM
$15.7B
$53.9M 5.59%
1,163,700
+74,900
+7% +$3.36M
2024 Q1
6 quarters
VLUE icon
7
iShares MSCI USA Value Factor ETF
VLUE
$9.13B
$40M 4.15%
+320,000
New +$37.7M
2025 Q3
0 quarters
RWR icon
8
State Street SPDR Dow Jones REIT ETF
RWR
$1.79B
$35.7M 3.7%
355,805
+35,305
+11% +$3.47M
2024 Q2
5 quarters
SCHH icon
9
Schwab US REIT ETF
SCHH
$10.9B
$35.1M 3.64%
1,627,170
+141,170
+10% +$3.01M
2024 Q2
5 quarters
IQLT icon
10
iShares MSCI Intl Quality Factor ETF
IQLT
$13.8B
$33.2M 3.44%
751,440
+58,740
+8% +$2.53M
2025 Q2
1 quarter
RSP icon
11
Invesco S&P 500 Equal Weight ETF
RSP
$98B
$29M 3%
152,610
+19,510
+15% +$3.64M
2025 Q1
2 quarters
JPST icon
12
JPMorgan Ultra-Short Income ETF
JPST
$42.4B
$23.8M 2.46%
468,570
+251,920
+116% +$12.8M
2020 Q4
19 quarters
DFIV icon
13
Dimensional International Value ETF
DFIV
$21.9B
$20.4M 2.12%
443,115
+28,415
+7% +$1.27M
2025 Q2
1 quarter
BCI icon
14
abrdn Bloomberg All Commodity Strategy K-1 Free ETF
BCI
$3.5B
$8.61M 0.89%
399,645
+94,745
+31% +$1.99M
2024 Q2
5 quarters
IEMG icon
15
iShares Core MSCI Emerging Markets ETF
IEMG
$152B
$221K 0.02%
+3,350
New +$209K
2025 Q3
0 quarters
IJH icon
16
iShares Core S&P Mid-Cap ETF
IJH
$122B
– –
-98,600
Closed -$6.12M –
IJR icon
17
iShares Core S&P Small-Cap ETF
IJR
$103B
– –
-42,600
Closed -$4.66M –

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TBA
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OCA
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FMI
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CFO
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Mason Street Advisors's Q3 2025 Portfolio in Review

As of Q3 2025, Mason Street Advisors held 17 positions worth $965M, up 13% from $855M the previous quarter. Its ten largest holdings account for 92% of the portfolio.

Mason Street Advisors deployed $76.7M of net new capital in Q3 2025, opening 2 new positions and adding to 12 existing holdings. Its largest new stake was iShares MSCI USA Value Factor ETF: 320,000 shares worth $40M.

On the sell side, the largest reduction was iShares Core S&P 500 ETF, an estimated $38.8M trimmed.

  • Mason Street Advisors's largest Q3 2025 buy was iShares MSCI USA Value Factor ETF: 320,000 shares worth $40M.
  • Mason Street Advisors added most to iShares Core US Aggregate Bond ETF in Q3 2025, an estimated $24.5M increase.
  • Mason Street Advisors's biggest Q3 2025 reduction was iShares Core S&P 500 ETF, cutting an estimated $38.8M.
  • Mason Street Advisors fully exited iShares Core S&P Mid-Cap ETF in Q3 2025, selling an estimated $6.12M.
  • Mason Street Advisors's ten largest holdings make up 92% of its $965M portfolio in Q3 2025.
  • Mason Street Advisors opened 2 new positions and closed 2 in Q3 2025.
  • Mason Street Advisors's portfolio value rose 13% quarter-over-quarter to $965M.

Based on Mason Street Advisors's 13F filing for Q3 2025, filed 31 Oct 2025.