Nuveen Core Bond Fund
Actively managed U.S. bond fund
As of its 2026 Q2 report, Nuveen Core Bond Fund held 1,905 positions with $10.77B in net assets. Its ten largest holdings made up 16.0% of the fund. The TIBDX share class costs 0.29% a year. Over the 12 months to May 2026, TIBDX returned 5.5%, with dividends reinvested. In 2026 Q2 it added 166 new positions and exited 172.
The Fund seeks total return, primarily through current income.
The fund invests at least 80% of its assets in investment-grade bonds and fixed-income securities across all types—government, corporate, mortgage-backed, asset-backed, and senior loans—while retaining discretion to hold up to 20% in non-investment-grade high-yield bonds. The adviser performs its own credit analysis rather than relying on ratings alone and may overweight or underweight individual securities and sectors relative to the Bloomberg U.S. Aggregate Bond Index to seek outperformance. Because the fund's allocations can diverge from its benchmark index, performance may differ materially from index returns.
What you own
| Company | Weight | Value | Shares | Reported price |
|---|---|---|---|---|
Chicago Board of Trade | 3.24% | $349.19M | — | — |
United States Treasury Note/Bond 4.13% · due 2029-06-15 | 2.33% | $250.72M | — | — |
United States Treasury Note/Bond 4.13% · due 2033-04-30 | 1.76% | $189.72M | — | — |
United States Treasury Note/Bond 3.75% · due 2031-01-31 | 1.58% | $170.71M | — | — |
US TREASURY N/B 3.88% · due 2043-02-15 | 1.52% | $164.07M | — | — |
US TREASURY N/B 2.38% · due 2042-02-15 | 1.35% | $145.88M | — | — |
US TREASURY N/B 2.25% · due 2052-02-15 | 1.22% | $130.94M | — | — |
United States Treasury Note/Bond 4.63% · due 2044-05-15 | 1.05% | $113.04M | — | — |
Fannie Mae Pool 5.50% · due 2054-10-01 | 1.03% | $110.49M | — | — |
Nuveen Ultra Short Income ETF | 0.93% | $100.18M | 4.0M | $25.26 |
Reported price is the fund's own reported value divided by its own reported shares at 2026-06-30 — not a live quote, and not what the fund paid.
The 200 largest of 1,905 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 | 54.49% |
| Securitized | 41.98% |
| Derivatives | 3.29% |
| Cash & short-term | 1.85% |
| 2 smaller | 1.47% |
Look-through blends 2 underlying funds; 0.0% of NAV was not looked through and stays direct-classified.
By sector
- Securitized
- 40.1%
- Government
- 24.6%
- Other
- 11.7%
- Financials
- 6.1%
- 12 other sectors
- 17.6%
- Securitized
- 40.1%
- Government
- 24.6%
- Other
- 11.7%
- Financials
- 6.1%
- International
- 5.4%
- Utilities
- 2.7%
- Communication Services
- 1.8%
- Information Technology
- 1.3%
- Health Care
- 1.2%
- Industrials
- 1.1%
- Cash
- 1.1%
- Energy
- 0.8%
- Real Estate
- 0.8%
- Consumer Discretionary
- 0.7%
- Consumer Staples
- 0.5%
- Materials
- 0.2%
How it has done
TIBDX share class · total returns with dividends reinvested
Volatility over the last 12 months: 3.28%. Past returns are a record, not a forecast.
Jun 2026 has been filed since the trailing figures were struck, so it is not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.
The 6 share classes hold the same portfolio
| Share class | Expense ratio | 1 year | 3 years | 5 years | Worst fall |
|---|---|---|---|---|---|
| 0.29% | +5.54% | +14.61% | +2.84% | -4.77% | |
| 0.53% | +5.38% | +13.87% | +1.66% | -4.84% | |
| 0.63% | +5.30% | +13.65% | +1.40% | -4.86% | |
| 0.45% | +5.38% | +14.21% | +2.08% | -4.81% | |
| 0.43% | +5.51% | +14.24% | +2.25% | -4.80% | |
| 0.00% | +5.84% | +15.59% | +4.31% | -4.70% |
These classes hold the same portfolio, so the 2.91pp spread over 5 years is the cost difference between them — roughly 0.58pp a year — not a difference in what they own.
Fees & fund details
Nuveen Core Bond 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
- 0.00% – 0.63%· TIBDX 0.29%
- Portfolio turnover
- 66.00% a year · as of 2025 Q3
Net is what a holder pays after the adviser's contractual waiver; gross is before it. A waiver can expire.
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.
166 new· the largest 5
172 exited· the largest 3
Debt profile
What this fund holds — value-weighted across its bond and securitized long positions · as of 2026-06-30
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 | 86.8% |
| Floating rate | 13.2% |
Share of the fund's debt value in each maturity band, shortest first.
| <1y | 2.0% |
| 1-3y | 7.8% |
| 3-5y | 11.1% |
| 5-10y | 19.3% |
| 10y+ | 57.1% |
| Unknown | 2.6% |
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 nearly 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 | 50% |
| Credit spreads | 50% |
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 | +5.25 yr |
| High yield | +0.36 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 | 0.15 yr | 3% |
| 1 yr | 0.20 yr | 4% |
| 5 yr | 0.88 yr | 16% |
| 10 yr | 1.74 yr | 31% |
| 30 yr | 2.67 yr | 47% |
| 3 mo | 0.03 yr | 0% |
| 1 yr | 0.23 yr | 4% |
| 5 yr | 0.93 yr | 17% |
| 10 yr | 1.81 yr | 32% |
| 30 yr | 2.61 yr | 47% |
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 | +0.15 | +0.02 | +0.01 | $21.2k | $9.0k |
| 1 yr | +0.20 | +0.20 | +0.03 | $210.9k | $33.1k |
| 5 yr | +0.88 | +0.77 | +0.16 | $832.6k | $174.4k |
| 10 yr | +1.74 | +1.71 | +0.10 | $1.85m | $102.5k |
| 30 yr | +2.67 | +2.55 | +0.06 | $2.75m | $66.4k |
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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