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ANALYTICS
AnalysisScreenerGroups

Selection

Selected (1/4)

BIGBX

Seeded with the selected fund at 100%

Benchmark

Pick one fund or composite — returns and exposures render in excess of it

Peer Universe

Reference set for percentile ranks and factor bars

Fixed Income Funds · 2,838 total

ANALYTICS
AnalysisScreenerGroups

BIGBX

iShares U.S. Intermediate Government Bond Index Fund

AUM
$7.6B
Inception
7/17/2026
·

Under normal circumstances, at least 90% of the value of the fund’s assets, plus the amount of any borrowings for investment purposes, is invested in securities comprising the index, which, for the fund, are considered bonds issued or guaranteed by the U.S. government and its agencies or instrumentalities.

Time Series

Performance

No return history for BIGBX (iShares U.S. Intermediate Government Bond Index Fund). The returns, correlation and regression cards are hidden.
SnapshotAs ofvsⓘ

Fund Profile

Family
Registrant
Type
Mutual Fund
Asset Class
Fixed Income
Region
Peer Group Benchmark
Peer Group
Fixed Income - Government Intermediate (97 peers)
AUM
$7.6B
Yield
3.40%
Inception
7/17/2026
Holdings (Reported)
210
Equity
0%
Derivatives
0%
Net Equity Exposure
0%
Strategy Summary

Under normal circumstances, at least 90% of the value of the fund’s assets, plus the amount of any borrowings for investment purposes, is invested in securities comprising the index, which, for the fund, are considered bonds issued or guaranteed by the U.S. government and its agencies or instrumentalities.

ⓘ Methodology

Expense ratio and its components from the prospectus fee table, else the SEC annual shareholder report, else market data. Yield as of 10/7/2026, AUM 9/30/2026. Holdings, asset class, style, peer group and exposures as of 7/31/2026. Summary may be from an older prospectus.

Factor DetailsRef: Fixed Income Funds

None of the selected metrics are scored for BIGBX — switch the picker to All, or add metrics under Metrics (top right).

ⓘ Methodology

Hover or click for factor definitions. Weighted average of underlying company-level values with weights equal to position size. Solid blue dots mark the fund's position within the clean equity fund universe (5th–95th percentile scale); the shaded band spans the fund's broad class (Fixed Income Funds) 25th–75th percentile, notched at the median. Holdings as of 7/31/2026. Stock-level data as of 8/31/2026. Expense ratio, yield, and turnover as of 10/7/2026. AUM as of 9/30/2026.

Asset Class Exposure

Fixed Income91.7%
Cash & Short-Term8.3%
ⓘ Methodology

Shares of the fund's long book, from the asset category each position is filed under.

Country Exposure

Level
100.0%
100.0%
ⓘ Methodology

Shares are percentages of the holdings that carry a country, not portfolio weights. Based on N-PORT domicile; ADRs list under their exchange. Holdings as of 7/31/2026. Stock-level data as of 8/31/2026.

Holdings

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210 positions (top 10 shown, create for full holdings)

#NameWeight %Country
1BlackRock Funds III
8.69
USA
2United States Treasury
1.13
USA
3United States Treasury
1.12
USA
4United States Treasury
1.11
USA
5United States Treasury
1.09
USA
6United States Treasury
1.06
USA
7United States Treasury
1.05
USA
8United States Treasury
1.05
USA
9United States Treasury
1.04
USA
10United States Treasury
1.03
USA
ⓘ Methodology

Sector, country and factor detail need a security match; the share of weight that matched is a member figure, so the rows without one appear here with those columns blank. Holdings as of 7/31/2026. Stock-level data as of 8/31/2026.

ConcentrationRef: Fixed Income Funds

Total Holdings210
Effective Holdings86.6
Top 10 Weight18.4%
Max Position8.7%
Top Sector (of Net Assets)108%
Top Country (of Net Assets)100%
ⓘ Methodology

Hover or click for definitions. Solid blue dots mark the fund: percentage rows on a 0–100% scale, holdings counts log-scaled across the clean-universe 5th–95th percentile range. The shaded band spans the fund's broad class (Fixed Income Funds) 25th–75th percentile, notched at the median. Holdings as of 7/31/2026.

Peer Group Rank

See All Peer Groups
ⓘ Methodology

Sparkline's own holdings-based peer taxonomy (195 share classes across 97 funds). One share class shown per fund — the exchange-listed class where the SEC series has one, else its longest-history class; percentile ranks and medians are computed against the same deduped set. Quartile chips fill the layer the fund's rank falls in (top layer = best quartile). Funds without a full return history rank only on the horizons they cover.

Similar Funds

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Nearest funds across the whole universe, by holdings and behavior — the peer taxonomy is ignored, so matches can come from any category.

Top Similarity94
Top Overlap
Top Active Tilt
FundPeer Group
1GOVM
iShares 1-10 Year Treasury Bond ETF
Fixed Income - Government Intermediate
Fixed Income - Government Intermediate
94--
2IUTIX
Columbia U.S. Treasury Index Fund
Fixed Income - Government Intermediate
Fixed Income - Government Intermediate
90--
3VTG
VANGUARD TOTAL TREASURY ETF
Fixed Income - Government Intermediate
Fixed Income - Government Intermediate
90--
4SPTB
State Street(R) SPDR(R) Portfolio Treasury ETF
Fixed Income - Government Intermediate
Fixed Income - Government Intermediate
90--
5LDRT
iShares iBonds 1-5 Year Treasury Ladder ETF
Fixed Income - Government Intermediate
Fixed Income - Government Intermediate
89--
6KAMO
Kensington Credit Opportunities ETF
Fixed Income - Unconstrained
Fixed Income - Unconstrained
86--
7VBISX
VANGUARD SHORT-TERM BOND INDEX FUND
Fixed Income - Short-Term
Fixed Income - Short-Term
86--
8SWSBX
Schwab Short-Term Bond Index Fund
Fixed Income - Short-Term
Fixed Income - Short-Term
86--
9SFITX
State Farm Interim Fund
Fixed Income - Core
Fixed Income - Core
86--
10SCHR
Schwab Intermediate-Term U.S. Treasury ETF
Fixed Income - Government Intermediate
Fixed Income - Government Intermediate
84--

The method columns are members-only — create a free account to see these figures.

ⓘ Methodology

Rows are the consensus top matches (a fund must place in at least two methods' top 250 to qualify, and matches missing more than one of this fund's own methods are not ranked — a row scored on fewer methods is a noisier estimate, not a better match). Click a method column to see that method's own top matches across the whole universe instead. Gray (N) beside each method's metric is that fund's rank in the whole universe on that method. Similarity is a percentile among match-grade fund pairs, 0–100 — 87 means the pair is closer than 87% of the strongest matches in the universe, averaged across the methods — so it compares across funds: index clones tie at the top with thousands of other clone pairs, so scores top out in the high 80s to 90s, while a one-of-a-kind fund's best match can score in the 30s. Rows are ordered by the Consensus Rank — the geometric mean of those universe ranks, shown in each cell's tooltip — and the score is held down the list to the level of the closest match above it, so equal scores mean equally close and the number reads as a floor. A dash means that method has no figure for the pair at all (one of them lacks the holdings or return history it needs). Hover a column header for each method's definition. The “Top…” strips above compare against every fund's own top match across the whole universe (they deliberately don't follow the Peer Universe selector); Top Similarity is simply the best match's score, with no reference band; the Holdings and Active Tilt strips carry no reference band because computing every fund's best book overlap would require a full holdings scan per fund — the dot stands alone on its natural 0–100% scale. One share class shown per fund, and a fund's own sister share classes are excluded from its Top-match strips. Holdings as of 7/31/2026. Consensus Rank is the geometric mean of the match's universe-wide rank across the methods (#1.0 = top match on every one). Holdings Overlap = common-holdings weight (sum of the minimum weight across shared positions, long only). Active Tilt Overlap = the same statistic on active weights (holdings minus the fund's own default benchmark, floored at 0), which strips the benchmark ballast that dominates raw overlap.