Data as of Oct 28, 2026.
IEF vs MGK: Differences, Returns & Fees
Over the year to Oct 28, 2026, IEF returned −3.2% to MGK's +7.8%; 0% of their weight is in the same names.
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Net assets: $43.5bn on Oct 27, 2026 for iShares 7-10 Year Treasury Bond ETF, and $34.9bn on Sep 30, 2026 for Vanguard Morningstar Mega Cap Growth ETF.
Pair scorecard
MGK costs 0.10 points a year less; their one-year returns differ by 11.0 points; IEF is 1.2 times larger.
| Measure | IEF | MGK |
|---|---|---|
| Return | ||
| Total return, 1 year | −3.2% | +7.8% |
| Drawdown | ||
| Below its high | 13.1%, high on Aug 4, 2020 | 4.4%, high on Oct 6, 2026 |
| Benchmark | ||
| What it tracks | ICE U.S. Treasury 7-10 Year Bond Index | Morningstar US Mega Cap Growth Index |
| Cost and size | ||
| Expense ratio | 0.15% | 0.05% |
| Net assets, as of Sep 30, 2026 | $41.6bn | $34.9bn |
| Holdings | ||
| Holdings in common | 0% | |
| In the S&P 500, by weight | 99% | |
| Top ten holdings, share of the fund | 64.5% | |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 27, 2026. Method
Risk and return
Jan 4, 2008 to Oct 23, 2026 · 981 weekly returnsMGK returned more: +1,024.1% to +64.2%. IEF swung less: 6.6% to 19.5%. IEF fell less at its worst: −23.3% to −46.4%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | IEF | MGK | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +64.2% | +1,024.1% | MGK | Price change plus distributions, reinvested. |
| Annualized | +2.7% | +13.7% | MGK | Total return as a yearly rate. |
| Price return | +3.4% | +823.8% | MGK | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 6.6% | 19.5% | IEF | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 4.7% | 13.3% | IEF | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −23.3% | −46.4% | IEF | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 0.21 | 0.68 | MGK | Return above Treasury bills per unit of volatility. |
| Sortino | 0.30 | 1.00 | MGK | Return above Treasury bills per unit of downside deviation. |
| Calmar | 0.11 | 0.30 | MGK | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 981 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, IEF and MGK hold 0% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 27, 2026.
half
0% in common
Only in one fund ↓
Side by side
IEF and MGK on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
IEF and MGK do different jobs. What does each one do in a portfolio?
- What each follows. IEF follows ICE U.S. Treasury 7-10 Year Bond Index and MGK follows Morningstar US Mega Cap Growth Index.
- Holdings in common. 0% of the weight is in the same securities (holdings dated Oct 27, 2026 and Sep 30, 2026).
- One-year total return. Over 1 year to Oct 28, 2026 IEF returned −3.2% and MGK +7.8% with distributions reinvested, a gap of 11.0 points.
Data as of Oct 28, 2026.
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IEF
IEF tracks an index of 7-10 Year Treasury Bond. Over the year to Oct 28, 2026 it returned −3.2% with distributions reinvested. The prospectus expense ratio is 0.15% a year. It sat 13.1% below its high of Aug 4, 2020 on Oct 28, 2026.
MGK
MGK tracks an index of Mega Cap Growth. Over the year to Oct 28, 2026 it returned +7.8% with distributions reinvested. The prospectus expense ratio is 0.05% a year. By its holdings published by its issuer as of Sep 30, 2026, 99% of the fund by weight is stocks the S&P 500 also holds, across 54 positions, with the top ten at 64.5%. It sat 4.4% below its high of Oct 6, 2026 on Oct 28, 2026.
Questions people ask
- Which returned more over the last year, IEF or MGK?
- In the year to Oct 28, 2026, with distributions reinvested, IEF returned −3.2% and MGK +7.8%.
- Which is cheaper, IEF or MGK?
- MGK is cheaper, by 0.10 percentage points a year. That is about $10 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.
Cite this pageCitation, APA and Markdown
ETFIQ, IEF against MGK, data as of Oct 28, 2026. https://etfiq.com/compare/any/ief-vs-mgk
ETFIQ. (Oct 28, 2026). IEF against MGK. Retrieved from https://etfiq.com/compare/any/ief-vs-mgk
[IEF against MGK (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/ief-vs-mgk)
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