Mason Street Advisors, LLC
In its 13F for Q4 2024 (holdings as of December 31, 2024, filed February 10, 2025), Mason Street Advisors, LLC reported 12 stock positions worth $772.6 million. Its top holding was iShares Core U.S. Aggregate (AGG) at 32.3% of the portfolio, followed by iShares Core S&P 500 ETF (IVV, 21.9%) and SS SPDR PF LNG TRM TSY E-Usd (SPTL, 12.5%). Compared with Q3 2024, it added to 4 and reduced 6. The biggest buy was iShares Core U.S. Aggregate (AGG, shares +2%) and the biggest sale Abrdn Bloomberg All Commodit (BCI, shares −70%).
- Most Recent 13F
- Q2 2026
- Location
- MILWAUKEE, WI
- CIK
- 0001167711
- Portfolio Value
- $772.6M (Q4 2024)
- SEC Filing
- 0001085146-25-000945 ↗ filed Feb 10, 2025
Holdings Value
Holdings 12 stocks · $772.6M
| AGG iShares Core U.S. Aggregate | 32.31% | 2,575,800 | $249.6M | Add +2.1% |
| IVV iShares Core S&P 500 ETF | 21.93% | 287,750 | $169.4M | Reduce -5.1% |
| SPTL SS SPDR PF LNG TRM TSY E-Usd | 12.54% | 3,700,000 | $96.9M | No change |
| IEFA iShares Core MSCI Eafe ETF | 9.40% | 1,033,700 | $72.6M | Add +12.3% |
| SPMD SS SPDR P S&P 400 Midcap ETF | 5.74% | 811,500 | $44.4M | Add +12.6% |
| SPSM SS SPDR P S&P 600 Small Cap | 4.96% | 853,500 | $38.3M | Add +15.2% |
| RWR SS SPDR Dow Jones REIT ETF | 4.10% | 320,500 | $31.7M | Reduce -5.0% |
| SCHH Schwab US REIT ETF | 4.05% | 1,486,000 | $31.3M | Reduce -4.5% |
| IJH iShares Core S&P Midcap ETF | 2.00% | 248,400 | $15.5M | Reduce -26.0% |
| JPST JPMorgan Ultra-Short Income | 1.41% | 216,650 | $10.9M | No change |
| BCI Abrdn Bloomberg All Commodit filed as ABRDN ETFS | 0.78% | 304,900 | $6.0M | Reduce -70.4% |
| IJR iShares Core S&P Small-Cap E | 0.77% | 51,600 | $5.9M | Reduce -61.4% |
Portfolio Sells Q3 2024 → Q4 2024
| BCI Abrdn Bloomberg All Commodit | Reduce -70.4% | 0.78% | −1.78 |
| IJR iShares Core S&P Small-Cap E | Reduce -61.4% | 0.77% | −1.13 |
| IJH iShares Core S&P Midcap ETF | Reduce -26.0% | 2.00% | −0.54 |
| SCHH Schwab US REIT ETF | Reduce -4.5% | 4.05% | −0.33 |
| RWR SS SPDR Dow Jones REIT ETF | Reduce -5.0% | 4.10% | −0.27 |
| IVV iShares Core S&P 500 ETF | Reduce -5.1% | 21.93% | +0.68 |
Portfolio Buys Q3 2024 → Q4 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 |