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ANALYTICS
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GMDZX

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Benchmark

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Peer Universe

Reference set for percentile ranks and factor bars

Fixed Income Funds · 2,838 total

ANALYTICS
AnalysisScreenerGroups

GMDZX

Medium-Duration Bond Fund

Expense Ratio
0.67%
AUM
$3.8B
Inception
8/27/2001
1Y Return
-2.0%42nd %ilevs 2,838 asset-class peers
·

The fund invests at least 80% of net assets in investment grade fixed income instruments, including obligations issued or guaranteed by the U.S. government and foreign governments, as well as mortgage- and asset-backed securities. The average credit quality rating is maintained at "Baa" or higher, with up to 15% in below-investment grade securities, and the average dollar-weighted duration typically varies within +/- 30% of the Bloomberg US Aggregate Bond Index. A multi-manager approach is employed, with different sub-advisers managing portions of the portfolio based on varying investment styles.

Time Series
–

Performance

NameCumulative ReturnAnn. ReturnAnn. VolSharpeMax DD
GMDZX
Medium-Duration Bond Fund
-2.0%-2.0%4.0%-1.45-5.0%
ⓘ Methodology

ETF performance based on market prices. Drag on chart to select period. Sharpe Ratio uses the one-month T-bill as the risk-free rate. From 10/7/2025 to 10/7/2026.

Trailing Returns

Name
YTD1D5D1M3M6M1Y2Y3Y5YMAX
GMDZX
Medium-Duration Bond Fund
-3.2%0.0%0.1%-2.8%-3.3%-3.1%-2.0%1.4%4.9%-0.9%2.4%
ⓘ Methodology

ETF performance based on market prices. Returns for periods greater than one year are annualized. As of 10/7/2026.

Annual Returns

Name
2001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025YTD
GMDZX
Medium-Duration Bond Fund
0.1%*6.1%4.4%3.6%2.1%4.3%6.5%-6.4%14.3%2.2%3.1%4.3%-3.8%4.8%-0.1%2.8%3.7%-0.8%9.9%8.8%-2.3%-14.9%6.0%1.6%7.9%-3.2%
ⓘ Methodology

* partial year — the series ran for only part of it (its first year, or the year it closed); the figure is the return over the part it did run. ETF performance based on market prices. As of 10/7/2026.

Correlation Matrix

Benchmark

Select a second series, or to correlate with the seven research factors.

Factor Regression

Name
Ann. αβ MKTβ SMBβ HMLβ RMWβ CMAβ UMDβ iHMLR²Obs
GMDZXUS
Medium-Duration Bond Fund
-2.9%0.12**0.06-0.08**0.010.10**-0.02-0.04*0.26226
ⓘ Methodology

ETF performance based on market prices. US factor set. Daily OLS of excess return (fund − T-bill) on factor spread returns over the selected date range, intersected with each series' history. Bold with * |t| ≥ 1.96, ** |t| ≥ 2.58. Cell shading tracks each loading's t-stat. Betas are returns-based — compare with the holdings-based factor scores below. Factor returns are long-short spread returns (© Ken French, Dartmouth). From 10/7/2025 to 8/31/2026.

SnapshotAs ofvsⓘ

Fund Profile

Fund Documents(opens the fund company’s site in a new tab)
Family
Registrant
Type
Mutual Fund
Asset Class
Fixed Income
Region
Peer Group Benchmark
Prospectus Benchmark
Bloomberg US Aggregate Bond Index
Peer Group
Fixed Income - Core (657 peers)
1Y Peer Percentile
46
3Y Peer Percentile
48
Expense Ratio
0.67%
AUM
$3.8B
3Y Flow
+109.8%
Yield
4.38%
Inception
8/27/2001
Holdings (Reported)
6,555
Turnover
409%
Equity
0%
Derivatives
22%
Strategy Summary

The fund invests at least 80% of net assets in investment grade fixed income instruments, including obligations issued or guaranteed by the U.S. government and foreign governments, as well as mortgage- and asset-backed securities. The average credit quality rating is maintained at "Baa" or higher, with up to 15% in below-investment grade securities, and the average dollar-weighted duration typically varies within +/- 30% of the Bloomberg US Aggregate Bond Index. A multi-manager approach is employed, with different sub-advisers managing portions of the portfolio based on varying investment styles.

ⓘ Methodology

Expense ratio and its components from the fund's prospectus fee table. Turnover from the SEC annual report (3/6/2026). Yield as of 10/6/2026, AUM 9/30/2026. Holdings, asset class, style, peer group and exposures as of 6/30/2026. Strategy summary from the fund's prospectus.

Factor DetailsRef: Fixed Income Funds

None of the selected metrics are scored for GMDZX — 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 6/30/2026. Stock-level data as of 8/31/2026. Expense ratio, yield, and turnover as of 10/6/2026. AUM as of 9/30/2026.

Asset Class Exposure

Fixed Income67.0%
Cash & Short-Term7.9%
Other25.1%
Short positions of 6.7% of net assets are not shown.ⓘ Methodology

Shares of the fund's long book, from the asset category each position is filed under. The long book is 161% of net assets, so shares are of the long book rather than of the fund - it is levered by 61%. The short book is stated under the card and never netted into a slice: a pie cannot draw a negative, and folding a hedge into the class it offsets would make it look like more of that class. Other is everything we could not name as an asset class: holdings the filing itself labels as other, derivative positions at the market value the filing reports rather than at notional, and funds held inside this fund whose own holdings we could not read.

Country Exposure

Level
85.6%
82.1%
Other3.5%
12.4%
5.8%
2.1%
Other4.5%
Emerging Markets2.0%
ⓘ 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 6/30/2026. Stock-level data as of 8/31/2026.

Holdings

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3,355 positions (top 10 shown, create for full holdings)

#NameWeight %Country
1Btopn Dbsi/Fixe TO 02/0
6.51
USA
2Chicago Board of Trade
5.15
USA
3Chicago Board of Trade
4.84
USA
4Chicago Board of Trade
3.51
USA
5Chicago Board of Trade
3.31
USA
6Btopn Citigroup TO 01/0
2.93
USA
7Ice Futures Europe - Financial Products Division
2.90
GBR
8Federal National Mortgage Association
2.32
USA
9Federal National Mortgage Association
2.21
USA
10Chicago Board of Trade
2.14
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 6/30/2026. Stock-level data as of 8/31/2026.

ConcentrationRef: Fixed Income Funds

Total Holdings6,555
Effective Holdings125.3
Top 10 Weight35.8%
Max Position6.5%
Top Sector (of Net Assets)144%
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 6/30/2026.

Benchmark DifferentiationRef: Fixed Income Funds

vs AGGBroad Benchmark
Tracking Error1.7%
Benchmark Correlation0.97
ⓘ Methodology

One sub-card per benchmark: the market primary, then the style secondary — the gap between them is the style sleeve itself. Both anchors are Sparkline-inferred (market from asset class and region, style from the holdings size-and-style map), not the fund's official prospectus benchmark. Solid blue dot marks the fund; the shaded band spans the reference set's 25th–75th percentile, notched at the median (band follows the Peer Universe selector). Active Share compares the fund's book with the benchmark's, share for share; Tracking Error is the annualized daily deviation over the trailing two years (ruler runs to just past the universe's 95th percentile, or past the fund's own figure where that is larger); Benchmark Correlation is the plain daily correlation over the trailing year. Hover the labels for full definitions.

Peer Group Rank

See All Peer Groups
Metric
GMDZX
Medium-Duration Bond Fund
Peer Group
657 funds
Peer Asset Class
2,838 funds
YTD Return
-3.19%-2.78%36-2.33%36
1Y Return
-2.05%-1.96%46-1.51%42
3Y Return (Ann.)
4.87%4.91%484.80%51
5Y Return (Ann.)
-0.86%-0.25%220.27%20
Expense Ratiohigher = cheaper
0.67%0.55%380.52%37
ⓘ Methodology

Sparkline's own holdings-based peer taxonomy (1,557 share classes across 657 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 Similarity64
Top Overlap
Top Active Tilt
Top Return Corr
FundPeer Group
1MSTRX
Morningstar Total Return Bond Fund
Fixed Income - Core
Fixed Income - Core
64---
2BBCPX
Bridge Builder Core Plus Bond Fund
Fixed Income - Core Plus
Fixed Income - Core Plus
64---
3OAFIX
Optimum Fixed Income Fund
Fixed Income - Core
Fixed Income - Core
61---
4GGBFX
Global Bond Fund
Fixed Income - Global (Hedged)
Fixed Income - Global (Hedged)
60---
5GIBAX
Guggenheim Total Return Bond Fund
Fixed Income - Core
Fixed Income - Core
58---
6PFDOX
PFG PIMCO Active Core Bond Strategy Fund
Fixed Income - Core
Fixed Income - Core
54---
7PTTAX
PIMCO Total Return Fund
Fixed Income - Core
Fixed Income - Core
54---
8RMTBX
Aspiriant Risk-Managed Taxable Bond Fund
Fixed Income - Core
Fixed Income - Core
41---
9MXFDX
Empower Core Bond Fund
Fixed Income - Core
Fixed Income - Core
41---
10BOND
PIMCO Active Bond Exchange-Traded Fund
Fixed Income - Core
Fixed Income - Core
41---

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 6/30/2026. 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. Return Correlation = correlation of market-hedged daily returns over the trailing two years (CAPM residuals), so only market-beta co-movement is removed; requires ~18 months of daily history (378 of the window's 504 trading days).