Managers / Q1 2020 · view latest →
MASON STREET ADVISORS, LLC
CIK 0001167711 · 720 EAST WISCONSIN AVE, MILWAUKEE, WI, 53202 · 4146655400
Summary
Mason Street Advisors, LLC reported $4.3B in U.S.-listed holdings across 1,535 positions for Q1 2020.
Its largest position, MSFT, represents 4.0% of the portfolio.
Compared with Q4 2019, the fund opened 39 new positions and exited 20.
Portfolio Metrics
Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.
Reported Value by Quarter
Portfolio Composition
- Common Stock · 84.2% · $3.6B
- Other · 9.1% · $390M
- REIT · 3.9% · $166M
- ETP · 2.4% · $104M
- US DOMESTIC · 0.3% · $14M
Quarter-over-Quarter Changes full breakdown →
vs Q4 2019 (amended baseline)
| Issuer | Move | Share Δ | Shares now | Value Δ | Value now |
|---|---|---|---|---|---|
| State Street Institutional US Government Money Market Fund - Premier Class | NEW | +79.87M | 79.87M | +$80M | $80M |
| E-Mini S&P 500 Future | NEW | +602 | 602 | +$77M | $77M |
| S&P 400 Mini Index Futures | NEW | +134 | 134 | +$19M | $19M |
| Marriott International Inc | NEW | +13.00M | 13.00M | +$13M | $13M |
| The Southern Co | NEW | +11.00M | 11.00M | +$11M | $11M |
| Federal Home Loan Bank | NEW | +9.00M | 9.00M | +$9M | $9M |
| S&P SmallCap 600 Index TRS | NEW | +9.0K | 9.0K | +$8M | $8M |
| Chevron Corp | NEW | +7.50M | 7.50M | +$7M | $7M |
Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.
Holdings — Q1 2020
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $1.0B | 15 | May 7, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $1.0B | 15 | Feb 4, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2025 | $965M | 15 | Oct 31, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $855M | 15 | Aug 8, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $786M | 13 | May 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $773M | 12 | Feb 10, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $823M | 12 | Nov 12, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q2 2024 | $743M | 12 | Aug 15, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q1 2024 | $594M | 8 | May 15, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q4 2023 | $545M | 7 | Feb 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q3 2023 | $521M | 8 | Nov 14, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q2 2023 | $537M | 8 | Aug 14, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q1 2023 | $452M | 9 | May 15, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q4 2022 | $402M | 9 | Feb 21, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q3 2022 | $345M | 9 | Nov 14, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q2 2022 | $286M | 10 | Aug 15, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q1 2022 | $170M | 11 | May 9, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q4 2021 | $138M | 9 | Feb 3, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q3 2021 | $134M | 9 | Nov 15, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q2 2021 | $111M | 8 | Aug 13, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q1 2021 | Under review | 7 | May 14, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q4 2020 | $5.9B | 1,515 | Feb 12, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q3 2020 | $5.1B | 1,516 | Nov 13, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q2 2020 | $4.9B | 1,516 | Aug 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q1 2020 | $4.3B | 1,535 | May 8, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q4 2019 | $5.1B | 1,516 | Feb 19, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q3 2019 | $4.8B | 1,516 | Nov 5, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q2 2019 | $4.7B | 1,513 | Aug 12, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q1 2019 | $4.8B | 1,560 | May 7, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q4 2018 | $4.0B | 1,514 | Feb 13, 2019 | 13F-HR | changes · EDGAR ↗ |
Other Included Managers
This filing reports holdings on behalf of 16 additional managers.
- ABERDEEN ASSET MANAGEMENT PLC/UK028-04701
- AMERICAN CENTURY INVESTMENT MANAGEMENT INC028-01091
- BLACKROCK ADVISORS LLC028-04295
- FEDERATED INVESTMENT MANAGEMENT CO028-04377
- FIAM LLC028-12282
- FIDUCIARY MANAGEMENT INC /WI/028-01526
- LOOMIS SAYLES & CO L P028-00398
- MACQUARIE INVESTMENT MANAGEMENT BUSINESS TRUST028-05267
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/028-04968
- PACIFIC INVESTMENT MANAGEMENT CO LLC028-10952
- PRICE T ROWE ASSOCIATES INC /MD/028-00115
- TEMPLETON INVESTMENT COUNSEL LLC028-01074
- TORTOISE CAPITAL ADVISORS, L.L.C.028-11123
- WELLINGTON MANAGEMENT GROUP LLP028-04557
- WELLS CAPITAL MANAGEMENT INC028-04413
- NORTHWESTERN MUTUAL LIFE INSURANCE CO028-00229
13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.