Inflation Protection Portfolio
Data updated: 2026-05-27
C000050276 — Inflation Protection Portfolio data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Treasury / Sovereign Bond · $419.79M AUM · 0.46% expense ratio · 2.7% 1-yr return. From SEC regulatory filings.
C000050276 Fund Overview
Inflation Protection Portfolio is a US mutual fund managed by Northwestern Mutual Series Fund INC, categorised as Long Treasury / Sovereign Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Northwestern Mutual Series Fund INC
- Category: Long Treasury / Sovereign Bond
- Assets under management: $419.79M
- 1-year return: 2.7%
- SEC CIK: 0000742212
- SEC series ID: S000018228
- Share class ID: C000050276
C000050276 Holdings
Top 10 holdings of Inflation Protection Portfolio by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| United States Treasury | 8.57% |
| United States Treasury | 4.73% |
| United States Treasury | 4.71% |
| United States Treasury | 4.35% |
| United States Treasury | 3.10% |
| United States Treasury | 2.70% |
| United States Treasury | 2.62% |
| Hqla Funding LLC | 2.24% |
| Regatta Funding Co LLC | 2.24% |
| United States Treasury | 2.14% |
C000050276 Portfolio Allocation
Asset-class allocation of Inflation Protection Portfolio by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 73.1% |
| Securitized | 21.9% |
| Cash & Equivalents | 4.5% |
| Derivatives | 2.0% |
C000050276 Performance
Total returns for C000050276 (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.3% |
| 1 year | 2.7% |
| 3 years (annualised) | 3.0% |
| 5 years (annualised) | 1.2% |
C000050276 Risk Information
Risk metrics for C000050276, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 2.9%
C000050276 Costs and Fees
C000050276 costs about $46 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.46%
- Gross expense ratio: 0.59%
- Portfolio turnover: 42%
- Brokerage commissions: 0.07 bps of average net assets (SEC N-CEN)
C000050276 Cashflows
Over the 12 months to 2026-03, Inflation Protection Portfolio had net inflows of $9.09M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$1.27M |
| 2026-02 | −$43.58K |
| 2026-01 | $324.66K |
| 2025-12 | −$940.42K |
| 2025-11 | −$472.26K |
| 2025-10 | −$297.78K |
C000050276 Debt Constituents
Largest debt holdings of Inflation Protection Portfolio by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury | 8.57% |
| United States Treasury | 4.73% |
| United States Treasury | 4.71% |
| United States Treasury | 4.35% |
| United States Treasury | 3.10% |
| United States Treasury | 2.70% |
| United States Treasury | 2.62% |
| United States Treasury | 2.14% |
| United States Treasury | 2.08% |
| United States Treasury | 1.79% |
C000050276 Prospectus and SEC Filings
Official Inflation Protection Portfolio filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Treasury / Sovereign Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.