Data as of Oct 28, 2026.

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IBTI vs SPTS: Differences, Returns & Fees

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IBTI's duration was 1.8 years on Jul 31, 2026 and SPTS's 1.9 on Jun 30, 2026; SPTS charges 0.03% to IBTI's 0.07%.

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Net assets on Oct 27, 2026: $2.2bn for iShares iBonds Dec 2028 Term Treasury ETF and $7.3bn for State Street SPDR Portfolio Short Term Treasury ETF.

At a glance
+1.6%
IBTI total return, 1 year
+1.7%
SPTS total return, 1 year
0.07%
IBTI expense ratio
0.03%
SPTS expense ratio

Pair scorecard

SPTS costs 0.04 points a year less; their one-year returns differ by 0.1 points; SPTS is 3.3 times larger.

IBTI vs SPTS: Differences, Returns & Fees
MeasureIBTISPTS
Return
Total return, 1 year+1.6%+1.7%
Drawdown
Below its high3.2%, high on Aug 4, 2020
Benchmark
What it tracksICE 2028 Maturity US Treasury IndexBloomberg 1-3 Year U.S. Treasury Index
Cost and size
Expense ratio0.07%0.03%
Net assets, as of Oct 27, 2026$2.2bn$7.3bn
Holdings
Holdings in common47%

Holdings in common uses holdings dated Jun 30, 2026 and Jul 31, 2026. Method

Risk and return

Mar 6, 2020 to Oct 23, 2026 · 346 weekly returns
IBTI SPTS
Return
Total return edge SPTS −0.7% +11.3%
Annualized edge SPTS −0.1% +1.6%
Price return edge SPTS −16.1% −5.7%
Risk
Volatility edge SPTS 4.5% 1.7%
Max drawdown edge SPTS −17.9% −5.6%
Risk-adjusted
Sharpe edge IBTI −0.67 −0.81
Sortino edge IBTI −0.89 −1.11
Calmar edge SPTS −0.01 0.29
Reading

SPTS returned more: +11.3% to −0.7%. SPTS swung less: 1.7% to 4.5%. SPTS fell less at its worst: −5.6% to −17.9%.

Full scorecard

9 measures, with how each is measured
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Risk and return: IBTI vs SPTS: Differences, Returns & Fees
MeasureIBTISPTSEdgeHow it is measured
Return
Total return−0.7%+11.3%SPTSPrice change plus distributions, reinvested.
Annualized−0.1%+1.6%SPTSTotal return as a yearly rate.
Price return−16.1%−5.7%SPTSPrice change alone, distributions left out.
Risk
Volatility4.5%1.7%SPTSSpread of weekly returns, annualized. Lower is steadier.
Downside deviation3.3%1.2%SPTSLike volatility, counting only weeks below the Treasury bill rate.
Max drawdown−17.9%−5.6%SPTSDeepest fall from a high to the low after it.
Risk-adjusted
Sharpe−0.67−0.81IBTIReturn above Treasury bills per unit of volatility.
Sortino−0.89−1.11IBTIReturn above Treasury bills per unit of downside deviation.
Calmar−0.010.29SPTSAnnualized return divided by the max drawdown.

Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 346 weekly returns. Cash rate: the 13-week Treasury bill.

What they share

47%

By the books each fund has filed, IBTI and SPTS hold 47% of their money in the same securities at the same weight. Holdings dated Jun 30, 2026 and Jul 31, 2026.

0 half 100%

half

47% in common

Positions both hold · largest shared weight first IBTI SPTS
U.S. Treasury Notes, due Jan 31, 2028 4.46% 1.82%
U.S. Treasury Notes, due Feb 29, 2028 2.68% 1.36%
U.S. Treasury Notes, due May 15, 2028 2.44% 1.25%
U.S. Treasury Notes, due Apr 15, 2028 2.32% 1.24%
U.S. Treasury Notes, due Mar 15, 2028 2.32% 1.23%
U.S. Treasury Notes, due Feb 15, 2028 2.35% 1.22%
U.S. Treasury Notes, due Dec 15, 2028 2.42% 1.21%
U.S. Treasury Notes, due Jan 15, 2028 2.34% 1.21%
U.S. Treasury Notes, due Jan 31, 2028 2.33% 1.20%
U.S. Treasury Notes, due Feb 29, 2028 2.38% 1.20%
U.S. Treasury Notes, due May 31, 2028 2.34% 1.20%
U.S. Treasury Notes, due Apr 30, 2028 2.36% 1.19%
Only in one fund ↓
Only in IBTI
Only in SPTS
U.S. Treasury Notes, due Apr 30, 2029 1.42%
U.S. Treasury Notes, due Dec 31, 2027 1.37%
U.S. Treasury Notes, due Nov 30, 2027 1.37%
U.S. Treasury Notes, due May 31, 2029 1.37%
U.S. Treasury Notes, due Jun 30, 2029 1.36%
U.S. Treasury Notes, due Mar 31, 2029 1.30%
U.S. Treasury Notes, due Aug 15, 2027 1.29%
U.S. Treasury Notes, due Jan 31, 2029 1.29%
Check overlap with more funds →

Side by side

IBTI iShares iBonds Dec 2028 Term Treasury ETF SPTS State Street SPDR Portfolio Short Term Treasury ETF
Where it sits Bond ETF Bond ETF
What it is Tracks an index Tracks an index
Total return, 1 year +1.6% +1.7%
Its benchmark over the same days not measured −1.4% (AGG)
Gap to its benchmark not measured +3.1 pts vs AGG
Expense ratio 0.07% 0.03%
Holdings 47 96
Net assets, as of Oct 27, 2026 $2.2bn $7.3bn

IBTI and SPTS on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

Client brief · page 1 of 2 Report BR-36EC3AD370

IBTI and SPTS are built for the same job. How do they differ in cost, holdings and results?

  1. What each follows. IBTI follows ICE 2028 Maturity US Treasury Index and SPTS follows Bloomberg 1-3 Year U.S. Treasury Index.
  2. Holdings in common. 47% of the weight is in the same securities (holdings dated Jul 31, 2026 and Jun 30, 2026).
  3. Size. IBTI has $2.2bn in net assets and SPTS $7.3bn (net assets, as of Oct 27, 2026); SPTS is 3.3 times larger.

Data as of Oct 28, 2026.

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About each fund
IBTI

IBTI tracks an index. Over the year to Oct 28, 2026 it returned +1.6% with distributions reinvested. The prospectus expense ratio is 0.07% a year. It sat 3.2% below its high of Aug 4, 2020 on Oct 28, 2026.

SPTS

SPTS tracks an index. Over the year to Oct 28, 2026 it returned +1.7% with distributions reinvested, against −1.4% for its benchmark, the Bloomberg U.S. Aggregate Bond Index. The prospectus expense ratio is 0.03% a year.

Questions people ask

Which returned more over the last year, IBTI or SPTS?
In the year to Oct 28, 2026, with distributions reinvested, IBTI returned +1.6% and SPTS +1.7%.
Which is cheaper, IBTI or SPTS?
SPTS is cheaper, by 0.04 percentage points a year. That is about $4 on $10,000 held for a year. Fees come from each fund's prospectus.
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ETFIQ, IBTI against SPTS, data as of Oct 28, 2026. https://etfiq.com/compare/any/ibti-vs-spts

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Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.