Mason Street Advisors, LLC
In its 13F for Q1 2024 (holdings as of March 31, 2024, filed May 15, 2024), Mason Street Advisors, LLC reported 8 stock positions worth $594.2 million. Its top holding was iShares Core S&P 500 ETF (IVV) at 51.2% of the portfolio, followed by iShares Core U.S. Aggregate (AGG, 23.2%) and iShares Core MSCI Eafe ETF (IEFA, 9.4%). Compared with Q4 2023, it opened 1 new position, added to 1 and reduced 1. The biggest buy was iShares Core U.S. Aggregate (AGG, shares +19%) and the biggest sale iShares Core MSCI Eafe ETF (IEFA, shares −15%).
- Most Recent 13F
- Q2 2026
- Location
- MILWAUKEE, WI
- CIK
- 0001167711
- Portfolio Value
- $594.2M (Q1 2024)
- SEC Filing
- 0001085146-24-002537 ↗ filed May 15, 2024
Holdings Value
Holdings 8 stocks · $594.2M
| IVV iShares Core S&P 500 ETF | 51.15% | 578,150 | $304.0M | No change |
| AGG iShares Core U.S. Aggregate | 23.18% | 1,406,300 | $137.7M | Add +18.7% |
| IEFA iShares Core MSCI Eafe ETF | 9.41% | 753,200 | $55.9M | Reduce -14.8% |
| JPST JPMorgan Ultra-Short Income | 4.19% | 493,250 | $24.9M | No change |
| MINT PIMCO Enhanced Short Maturit | 4.15% | 245,500 | $24.7M | No change |
| IJR iShares Core S&P Small-Cap E | 3.59% | 193,200 | $21.4M | No change |
| IJH iShares Core S&P Midcap ETF | 3.43% | 335,500 | $20.4M | No change |
| SPSM SS SPDR P S&P 600 Small Cap | 0.89% | 123,400 | $5.3M | New |
Portfolio Sells Q4 2023 → Q1 2024
| IEFA iShares Core MSCI Eafe ETF | Reduce -14.8% | 9.41% | −2.01 |
Portfolio Buys Q4 2023 → Q1 2024
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 15 | $1.1B | AGG, IVV, SPTL, SPMD, SPSM |
| Q1 2026 | 15 | $1.0B | AGG, IVV, SPTL, SPMD, IEFA |
| Q4 2025 | 15 | $1.0B | AGG, IVV, SPTL, SPMD, SPSM |
| Q3 2025 | 15 | $964.8M | AGG, IVV, SPTL, SPMD, IEFA |
| Q2 2025 | 15 | $854.5M | AGG, IVV, SPTL, SPMD, IEFA |
| Q1 2025 | 13 | $786.1M | AGG, IVV, SPTL, IEFA, SPMD |
| Q4 2024 | 12 | $772.6M | AGG, IVV, SPTL, IEFA, SPMD |
| Q3 2024 | 12 | $823.5M | AGG, IVV, SPTL, IEFA, SPMD |
| Q2 2024 | 12 | $743.0M | AGG, IVV, SPTL, IEFA, SCHH |
| Q1 2024 | 8 | $594.2M | IVV, AGG, IEFA, JPST, MINT |