MASON STREET ADVISORS, LLC

Filed: 8/8/2025ACC: 0001085146-25-004732

📋 What this filing means

MASON STREET ADVISORS, LLC filed this quarterly 13F‑HR report disclosing 15 equity positions with a total reported market value of $854.51M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.

Positions

$854.51M

Total AUM (reported)

13.24M

Total Shares

Allocation by class

CORE US AGGBD ET$277.01M32.4%

CORE S&P500 ETF$167.61M19.6%

PORTFOLIO LN TSR$102.99M12.1%

PORTFOLIO S&P400$50.44M5.9%

CORE MSCI EAFE$47.74M5.6%

PORTFOLIO S&P600$46.38M5.4%

US REIT ETF$31.44M3.7%

Portfolio Concentration

Top 3$547.61M64.1%

4–10$261.05M30.5%

11–25$45.85M5.4%

Top 3 weight

64.1%

Top 10 weight

94.6%

Voting Authority Distribution

Total shares with voting rights: 13.24M

Sole

Full voting authority

13.24M

% of voting shares100.0%

Shared

Joint voting authority

0.00

% of voting shares0.0%

None

No voting authority

0.00

% of voting shares0.0%

Investment Discretion (by position count)

Sole0

Shared0

Other15

Dominant voting typeSole · 100.0% of voting shares

Institutional Holdings15

Rows:

ISHARES TR

DFND

CORE US AGGBD ET

Shares2.79M

TypeSH

Market value$277.01M

32.42%

Sole

2.79M

Shared

0.00

None

0.00

ISHARES TR

DFND

CORE S&P500 ETF

Shares269.95K

TypeSH

Market value$167.61M

19.62%

Sole

269.95K

Shared

0.00

None

0.00

SPDR SERIES TRUST

DFND

PORTFOLIO LN TSR

Shares3.87M

TypeSH

Market value$102.99M

12.05%

Sole

3.87M

Shared

0.00

None

0.00

SPDR SERIES TRUST

DFND

PORTFOLIO S&P400

Shares927.60K

TypeSH

Market value$50.44M

5.90%

Sole

927.60K

Shared

0.00

None

0.00

ISHARES TR

DFND

CORE MSCI EAFE

Shares571.90K

TypeSH

Market value$47.74M

5.59%

Sole

571.90K

Shared

0.00

None

0.00

SPDR SERIES TRUST

DFND

PORTFOLIO S&P600

Shares1.09M

TypeSH

Market value$46.38M

5.43%

Sole

1.09M

Shared

0.00

None

0.00

SCHWAB STRATEGIC TR

DFND

US REIT ETF

Shares1.49M

TypeSH

Market value$31.44M

3.68%

Sole

1.49M

Shared

0.00

None

0.00

SPDR SERIES TRUST

DFND

DJ REIT ETF

Shares320.50K

TypeSH

Market value$30.91M

3.62%

Sole

320.50K

Shared

0.00

None

0.00

ISHARES TR

DFND

MSCI INTL QUALTY

Shares692.70K

TypeSH

Market value$29.94M

3.50%

Sole

692.70K

Shared

0.00

None

0.00

INVESCO EXCHANGE TRADED FD T

DFND

S&P500 EQL WGT

Shares133.10K

TypeSH

Market value$24.19M

2.83%

Sole

133.10K

Shared

0.00

None

0.00

DIMENSIONAL ETF TRUST

DFND

INTERNATNAL VAL

Shares414.70K

TypeSH

Market value$17.76M

2.08%

Sole

414.70K

Shared

0.00

None

0.00

J P MORGAN EXCHANGE TRADED F

DFND

ULTRA SHRT ETF

Shares216.65K

TypeSH

Market value$10.98M

1.28%

Sole

216.65K

Shared

0.00

None

0.00

ABRDN ETFS

DFND

BBRG ALL COMD K1

Shares304.90K

TypeSH

Market value$6.33M

0.74%

Sole

304.90K

Shared

0.00

None

0.00

ISHARES TR

DFND

CORE S&P MCP ETF

Shares98.60K

TypeSH

Market value$6.12M

0.72%

Sole

98.60K

Shared

0.00

None

0.00

ISHARES TR

DFND

CORE S&P SCP ETF

Shares42.60K

TypeSH

Market value$4.66M

0.54%

Sole

42.60K

Shared

0.00

None

0.00

Issuer	Class	Shares	Type	Value / Portfolio %	Voting — Sole
ISHARES TRDFND	CORE US AGGBD ET	2.79M	SH	$277.01M 32.42%	2.79M
ISHARES TRDFND	CORE S&P500 ETF	269.95K	SH	$167.61M 19.62%	269.95K
SPDR SERIES TRUSTDFND	PORTFOLIO LN TSR	3.87M	SH	$102.99M 12.05%	3.87M
SPDR SERIES TRUSTDFND	PORTFOLIO S&P400	927.60K	SH	$50.44M 5.90%	927.60K
ISHARES TRDFND	CORE MSCI EAFE	571.90K	SH	$47.74M 5.59%	571.90K
SPDR SERIES TRUSTDFND	PORTFOLIO S&P600	1.09M	SH	$46.38M 5.43%	1.09M
SCHWAB STRATEGIC TRDFND	US REIT ETF	1.49M	SH	$31.44M 3.68%	1.49M
SPDR SERIES TRUSTDFND	DJ REIT ETF	320.50K	SH	$30.91M 3.62%	320.50K
ISHARES TRDFND	MSCI INTL QUALTY	692.70K	SH	$29.94M 3.50%	692.70K
INVESCO EXCHANGE TRADED FD TDFND	S&P500 EQL WGT	133.10K	SH	$24.19M 2.83%	133.10K
DIMENSIONAL ETF TRUSTDFND	INTERNATNAL VAL	414.70K	SH	$17.76M 2.08%	414.70K
J P MORGAN EXCHANGE TRADED FDFND	ULTRA SHRT ETF	216.65K	SH	$10.98M 1.28%	216.65K
ABRDN ETFSDFND	BBRG ALL COMD K1	304.90K	SH	$6.33M 0.74%	304.90K
ISHARES TRDFND	CORE S&P MCP ETF	98.60K	SH	$6.12M 0.72%	98.60K
ISHARES TRDFND	CORE S&P SCP ETF	42.60K	SH	$4.66M 0.54%	42.60K