SIIT CORE FIXED INCOME FUND
Actively managed U.S. bond fund
As of its 2026 Q2 report, SIIT CORE FIXED INCOME FUND held 3,124 positions with $9.88B in net assets. Its ten largest holdings made up 35.5% of the fund. The SCOAX share class costs 0.37% a year. Over the 12 months to May 2026, SCOAX returned 5.3%, with dividends reinvested. In 2026 Q2 it added 287 new positions and exited 346.
Current income consistent with the preservation of capital.
The fund employs multiple sub-advisers with differing investment philosophies to manage portions of its portfolio under the general supervision of SEI Investments Management Corporation. The sub-advisers invest at least 80% of net assets in fixed income securities across investment and non-investment grade U.S. and foreign corporate and government bonds, emerging market debt, mortgage-backed securities, and bank loans, with aggregate duration generally aligned to the Bloomberg U.S. Aggregate Bond Index. The fund may use futures, forwards, swaps, and currency transactions to manage interest rate and credit exposure, take long and short positions in foreign currencies, and engage in frequent trading. Because each sub-adviser selects securities of different types and maturities, the fund's actual holdings and sector exposures may diverge from those of its duration benchmark.
What you own
| Company | Weight | Value | Shares |
|---|---|---|---|
US 2YR NOTE (CBT) SEP26 | 9.61% | $949.77M | — |
N/A | 5.29% | $522.40M | — |
United States of America | 4.48% | $442.67M | — |
United States of America 3.88% · due 2031-04-30 | 4.34% | $428.66M | — |
United States of America 3.75% · due 2028-04-30 | 3.83% | $378.70M | — |
United States of America 4.63% · due 2046-02-15 | 1.75% | $173.00M | — |
United States of America 5.00% · due 2056-05-15 | 1.67% | $165.46M | — |
United States of America 3.88% · due 2029-05-15 | 1.61% | $159.47M | — |
Federal National Mortgage Association 5.00% · due 2056-06-15 | 1.56% | $154.48M | — |
United States of America 4.38% · due 2036-05-15 | 1.37% | $135.66M | — |
The 200 largest of 3,124 holdings, with the share counts as filed, open with a free account.
What the fund is made of
Percentages are of fund net assets. Rounding, liabilities and short positions can make totals differ from 100%.
| Bonds | 90.31% |
| Securitized | 13.03% |
| Derivatives | 12.48% |
| Cash & short-term | 5.29% |
These positions come to 121.11% of the fund's net assets. This counts only what the fund reported holding — the holdings disclosure covers assets, not liabilities such as borrowings — so it is not expected to reconcile to 100%.
Derivatives are shown at market value, not notional exposure.
By sector
- Government
- 56.3%
- Other
- 16.3%
- Securitized
- 10.5%
- Cash
- 4.3%
- 12 other sectors
- 12.6%
- Government
- 56.3%
- Other
- 16.3%
- Securitized
- 10.5%
- Cash
- 4.3%
- Financials
- 3.2%
- Utilities
- 2.3%
- Information Technology
- 1.3%
- Communication Services
- 1.2%
- Industrials
- 1.2%
- Health Care
- 1.1%
- International
- 0.6%
- Consumer Discretionary
- 0.5%
- Real Estate
- 0.5%
- Consumer Staples
- 0.3%
- Energy
- 0.3%
- Materials
- 0.2%
How it has done
SCOAX share class · total returns with dividends reinvested
Volatility over the last 12 months: 3.39%. Past returns are a record, not a forecast.
Fees & fund details
SIIT CORE FIXED INCOME FUND is an actively managed U.S. bond fund.
- Asset class
- Bonds
- Region
- United States
- Management
- Actively managed
- Fund type
- Open-end fund
- Credit quality
- Investment grade
- Rate sensitivity
- Intermediate duration
- Expense ratio, by class
- 0.37%· SCOAX 0.37%
- Portfolio turnover
- 373.00% a year · as of 2025 Q3
Turnover is how much of the portfolio was replaced in a year.
Classified from what the fund holds, not from its name · 2026 Q2. The summary is a paraphrase of the prospectus; the objective is verbatim.
What changed this quarter
Positions that entered or left the fund since its previous filing. Positions that were only resized are not listed.
287 new· the largest 4
346 exited· the largest 4
Debt profile
What this fund holds — value-weighted across its bond and securitized long positions · as of 2026-05-31
Share of the fund's debt by how its coupon behaves — the fact that decides whether a rate move reaches this portfolio at all.
| Fixed rate | 91.8% |
| Floating rate | 8.1% |
| Zero-coupon or unclassified | 0.2% |
Share of the fund's debt value in each maturity band, shortest first.
| <1y | 0.5% |
| 1-3y | 15.8% |
| 3-5y | 13.1% |
| 5-10y | 15.9% |
| 10y+ | 54.7% |
These three overlap — one holding can be in arrears and paying in kind at once — so they are shown separately and never summed.
Risk profile
Interest-rate and credit-spread sensitivity, both in years · as of 2026Q2
Most of this fund’s sensitivity is to interest rates, with credit spreads carrying about half as much.
Where the loss would come from. The two shocks are the same size, so this is the balance of the fund's two sensitivities rather than a bet on one moving more.
| Interest rates | 61% |
| Credit spreads | 39% |
Filers report the impact of a 0.01% move only, so the total is our own scaling of that one number and overstates the loss on most bonds — read it as approximate, never as precise. The two sensitivities overlap rather than add up: they measure the same positions against different shocks, which is why the durations above are shown side by side and never summed.
Share of the fund's spread duration carried by each credit tier.
| Investment grade | +3.34 yr |
| High yield | +0.48 yr |
Share of duration at each point, shortest first. A positive figure loses value when spreads widen; a negative one offsets — a credit hedge.
| 3 mo | 0.00 yr | 0% |
| 1 yr | 0.62 yr | 10% |
| 5 yr | 1.77 yr | 30% |
| 10 yr | 2.33 yr | 39% |
| 30 yr | 1.23 yr | 21% |
| 3 mo | 0.02 yr | 1% |
| 1 yr | 0.40 yr | 10% |
| 5 yr | 1.20 yr | 31% |
| 10 yr | 1.65 yr | 43% |
| 30 yr | 0.55 yr | 14% |
The two bands measure the same positions against different shocks and do not add — a Treasury carries rate duration and no spread duration, a floating-rate credit the reverse. Rate tenors are also summed across every currency the fund discloses.
Show the numbers
| Tenor | Rate yrs | IG yrs | HY yrs | IG $/bp | HY $/bp |
|---|---|---|---|---|---|
| 3 mo | +0.00 | +0.02 | +0.00 | $17.2k | $4.0k |
| 1 yr | +0.62 | +0.32 | +0.07 | $317.6k | $73.6k |
| 5 yr | +1.77 | +1.03 | +0.16 | $1.02m | $161.8k |
| 10 yr | +2.33 | +1.46 | +0.19 | $1.45m | $187.8k |
| 30 yr | +1.23 | +0.50 | +0.04 | $498.4k | $42.7k |
Dollar change per 1bp of spread movement, as filed and sign-anchored. A blank cell was not filed; a zero was.
Understand how this fund fits with the rest.
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