Data as of Oct 28, 2026.
FSIG vs IBDT: Differences, Returns & Fees
On Jul 31, 2026 FSIG's duration was 2.9 years and IBDT's 1.7; IBDT charges 0.10% to FSIG's 0.44%.
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Net assets on Oct 27, 2026: $1.5bn for First Trust Limited Duration Investment Grade Corporate ETF and $4.1bn for iShares iBonds Dec 2028 Term Corporate ETF.
Pair scorecard
IBDT costs 0.34 points a year less; their one-year returns differ by 1.5 points; IBDT is 2.7 times larger.
| Measure | FSIG | IBDT |
|---|---|---|
| Return | ||
| Total return, 1 year | +0.8% | +2.3% |
| Benchmark | ||
| What it tracks | No index, actively managed | Bloomberg December 2028 Maturity Corporate Index |
| Cost and size | ||
| Expense ratio | 0.44% | 0.10% |
| Net assets, as of Oct 27, 2026 | $1.5bn | $4.1bn |
| Holdings | ||
| Holdings in common | 3% | |
Holdings in common uses holdings dated Jul 31, 2026. Method
Risk and return
Nov 26, 2021 to Oct 23, 2026 · 256 weekly returnsEach against its own benchmark: FSIG against AGG, Nov 26, 2021 to Oct 23, 2026; IBDT against IUSB, Sep 28, 2018 to Oct 23, 2026.
FSIG returned more: +13.2% to +8.2%. FSIG swung less: 2.8% to 4.6%. FSIG fell less at its worst: −6.6% to −15.6%.
Full scorecard
19 measures, with how each is measured Open ↓
| Measure | FSIG | IBDT | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +13.2% | +8.2% | FSIG | Price change plus distributions, reinvested. |
| Annualized | +2.6% | +1.6% | FSIG | Total return as a yearly rate. |
| Price return | −7.5% | −11.7% | FSIG | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 2.8% | 4.6% | FSIG | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 2.1% | 3.5% | FSIG | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −6.6% | −15.6% | FSIG | Deepest fall from a high to the low after it. |
| Upside capture | 45.9% | 98.0% | Share of its benchmark's rise caught in the weeks it rose. | |
| Downside capture | 38.3% | 87.1% | Share of its benchmark's fall taken in the weeks it fell. Lower is better. | |
| Beta | 0.42 | 1.11 | Not an edge | How far it moves for each 1% its benchmark moves. |
| R squared | 0.77 | 0.74 | Not an edge | Share of its weekly moves its benchmark explains. |
| Risk-adjusted | ||||
| Sharpe | −0.50 | −0.50 | Tie | Return above Treasury bills per unit of volatility. |
| Sortino | −0.68 | −0.67 | Tie | Return above Treasury bills per unit of downside deviation. |
| Treynor | −0.034 | 0.010 | Return above Treasury bills per unit of beta. | |
| Calmar | 0.39 | 0.10 | FSIG | Annualized return divided by the max drawdown. |
| Against the benchmark | ||||
| Benchmark | AGG | IUSB | The ETF each fund is measured against. | |
| Alpha | +0.3% a year | +1.8% a year | Not significant | Yearly return beyond what its beta to the benchmark predicts. |
| Alpha t-stat | 0.48 | 1.32 | Not an edge | How sure the alpha is. Below 2, it could be chance. |
| Alpha range | −0.9% to +1.5% | −0.9% to +4.4% | Includes zero | The 95% range for the yearly alpha. |
| Information ratio | 0.73 | 0.44 | Return against its benchmark per unit of tracking error. | |
| Tracking error | 3.7% | 3.9% | Not an edge | How far weekly returns stray from the benchmark, annualized. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 256 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, FSIG and IBDT hold 3% of their money in the same securities at the same weight. Holdings dated Jul 31, 2026.
half
3% in common
Only in one fund ↓
Side by side
FSIG and IBDT on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
FSIG and IBDT are built for the same job. How do they differ in cost, holdings and results?
- What each follows. FSIG follows No index, actively managed and IBDT follows Bloomberg December 2028 Maturity Corporate Index.
- Holdings in common. 3% of the weight is in the same securities (holdings dated Jul 31, 2026).
- Cost. FSIG charges 0.44% of assets a year and IBDT 0.10%, a gap of 0.34 points.
Data as of Oct 28, 2026.
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FSIG
FSIG is actively managed and tracks no index. Over the year to Oct 28, 2026 it returned +0.8% with distributions reinvested, against −1.4% for its benchmark, the Bloomberg US Aggregate Bond Index. The prospectus expense ratio is 0.44% a year.
IBDT
IBDT tracks an index. Over the year to Oct 28, 2026 it returned +2.3% with distributions reinvested, against −1.2% for its benchmark, the Bloomberg U.S. Universal Index. The prospectus expense ratio is 0.10% a year.
Questions people ask
- Which returned more over the last year, FSIG or IBDT?
- In the year to Oct 28, 2026, with distributions reinvested, FSIG returned +0.8% and IBDT +2.3%.
- Which is cheaper, FSIG or IBDT?
- IBDT is cheaper, by 0.34 percentage points a year. That is about $34 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
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ETFIQ, FSIG against IBDT, data as of Oct 28, 2026. https://etfiq.com/compare/any/fsig-vs-ibdt
ETFIQ. (Oct 28, 2026). FSIG against IBDT. Retrieved from https://etfiq.com/compare/any/fsig-vs-ibdt
[FSIG against IBDT (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/fsig-vs-ibdt)
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