Mason Street Advisors, LLC
In its 13F for Q2 2024 (holdings as of June 30, 2024, filed August 15, 2024), Mason Street Advisors, LLC reported 12 stock positions worth $743.0 million. Its top holding was iShares Core U.S. Aggregate (AGG) at 32.1% of the portfolio, followed by iShares Core S&P 500 ETF (IVV, 23.0%) and SS SPDR PF LNG TRM TSY E-Usd (SPTL, 13.6%). Compared with Q1 2024, it opened 5 new positions, sold out of 1, added to 3 and reduced 2. The biggest buy was a new position in SS SPDR PF LNG TRM TSY E-Usd (SPTL) and the biggest sale iShares Core S&P 500 ETF (IVV, shares −46%).
- Most Recent 13F
- Q2 2026
- Location
- MILWAUKEE, WI
- CIK
- 0001167711
- Portfolio Value
- $743.0M (Q2 2024)
- SEC Filing
- 0001085146-24-004028 ↗ filed Aug 15, 2024
Holdings Value
Holdings 12 stocks · $743.0M
| AGG iShares Core U.S. Aggregate | 32.06% | 2,454,300 | $238.2M | Add +74.5% |
| IVV iShares Core S&P 500 ETF | 22.97% | 311,850 | $170.7M | Reduce -46.1% |
| SPTL SS SPDR PF LNG TRM TSY E-Usd | 13.55% | 3,700,000 | $100.7M | New |
| IEFA iShares Core MSCI Eafe ETF | 8.14% | 833,000 | $60.5M | Add +10.6% |
| SCHH Schwab US REIT ETF | 4.65% | 1,729,300 | $34.5M | New |
| RWR SS SPDR Dow Jones REIT ETF | 4.65% | 370,900 | $34.5M | New |
| SPSM SS SPDR P S&P 600 Small Cap | 3.77% | 675,300 | $28.0M | Add +447.2% |
| BCI Abrdn Bloomberg All Commodit filed as ABRDN ETFS | 2.82% | 1,029,600 | $20.9M | New |
| IJR iShares Core S&P Small-Cap E | 2.77% | 193,200 | $20.6M | No change |
| IJH iShares Core S&P Midcap ETF | 2.64% | 335,500 | $19.6M | No change |
| JPST JPMorgan Ultra-Short Income | 1.47% | 216,650 | $10.9M | Reduce -56.1% |
| SPMD SS SPDR P S&P 400 Midcap ETF | 0.50% | 72,100 | $3.7M | New |
Portfolio Sells Q1 2024 → Q2 2024
Portfolio Buys Q1 2024 → Q2 2024
| SPTL SS SPDR PF LNG TRM TSY E-Usd | New | 13.55% | +13.55 |
| AGG iShares Core U.S. Aggregate | Add +74.5% | 32.06% | +8.88 |
| SCHH Schwab US REIT ETF | New | 4.65% | +4.65 |
| RWR SS SPDR Dow Jones REIT ETF | New | 4.65% | +4.65 |
| SPSM SS SPDR P S&P 600 Small Cap | Add +447.2% | 3.77% | +2.88 |
| BCI Abrdn Bloomberg All Commodit | New | 2.82% | +2.82 |
| SPMD SS SPDR P S&P 400 Midcap ETF | New | 0.50% | +0.50 |
| IEFA iShares Core MSCI Eafe ETF | Add +10.6% | 8.14% | −1.26 |
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 |