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IOOvsMGCETF Comparison

ETF 1

IOO

iShares Global 100 ETF

This fund is part of

Global Large Cap

+0.94%

Full IOO fund page

VS

ETF 2

MGC

Vanguard Mega Cap ETF

This fund is part of

US Large Cap

+0.9%

Full MGC fund page

iShares Global 100 ETF (IOO) belongs to the Global Large Cap segment. Vanguard Mega Cap ETF (MGC) is part of the US Large Cap segment. IOO's top 3 sector exposures are Information Technology, Communication Services and Health Care. In contrast, MGC's top sector exposures are Information Technology, Communication Services and Financials. IOO is more expensive with a Total Expense Ratio (TER) of 0.4%, versus 0.05% for MGC. IOO is up 5.76% year-to-date (YTD) with -$96M in YTD flows. MGC performs worse with 4.35% YTD performance, and -$860M in YTD flows. Run a side-by-side ETF comparison of IOO and MGC below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.

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IOO vs MGC performance and flow charts

Performance

Cumulative Flows

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Daily, global ETF data for advanced analysis or integration into apps (API), from our partner Trackinsight.

Data Services

Historic performance and flows

Data as of 04/24/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	IOO MGC	+11.14%+10.06%	+4.38%+3.26%	+5.76%+4.35%	+42.27%+33.81%	+93.54%+87.68%	+107.02%+88.40%
Flows	IOO MGC	-$44M-$183M	-$76M-$841M	-$96M-$860M	-$41M+$1.13B	+$949M+$1.93B	+$1.38B+$2.03B

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	IOO MGC	+17.74%+15.82%	+13.68%+12.94%	+15.92%+15.43%	+17.04%+17.46%
Max drawdown	IOO MGC	-9.86%-9.78%	-9.86%-9.86%	-19.16%-19.36%	-23.35%-25.79%
Max drawdown duration	IOO MGC	76d76d	76d92d	107d126d	554d707d

Trading data

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	IOO	MGC
Last sale 4/27/2026 at 1:30 PM	$134.31	$261.68
Previous close 04/24/2026	$133.97	$261.17
Consolidated volume 04/24/2026
Average volume 30 days
Average discount or premium 30 days
Average Bid/Ask spread 30 days

Replication quality

Data as of March 31, 2026

1-year trailing difference

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	IOO	MGC
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 4/27/2026 at 1:30 PM

Live

Closed

	IOO	MGC
Last price	$134.31	$261.68
1D performance	+0.25%	+0.20%
AuM	$8.38 B	$9.33 B
E/R	0.4%	0.05%

Characteristics

	IOO	MGC
Management strategy	Passive	Passive
Provider	iShares	Vanguard
Benchmark	S&P Global 100 Index	CRSP U.S. Mega Cap Index
N° of holdings	98	166
Asset class	Equities	Equities
Trailing 12m distribution yield	Join	Join
Inception date	December 5, 2000	December 17, 2007
ESG	No	No

More IOO data on Trackinsight

More MGC data on Trackinsight

Exposure

Countries

IOO

USA

77.93%

Other

22.07%

MGC

USA

97.33%

Other

2.67%

Sectors

IOO

Information Techn.

43.5%

Communication Ser.

10.12%

Health Care

8.96%

Financials

8.82%

Consumer Discreti.

8.5%

Other

20.09%

MGC

Information Techn.

37.9%

Communication Ser.

11.86%

Financials

9.94%

Health Care

9.86%

Consumer Discreti.

9.79%

Other

20.65%

Diversification

IOO

Total weight of top 15 holdings out of 15

63.39%

MGC

Total weight of top 15 holdings out of 15

51.35%

Top 15 holdings

Data as of March 31, 2026

IOO

NVIDIA

12.19%

APPLE

10.71%

MICROSOFT-T

7.90%

AMAZON.COM INC

5.85%

ALPHABET INC-CL

4.81%

BROADCOM LIMITED

4.22%

ALPHABET INC-CL

3.86%

JPMORGAN CHASE

2.28%

LILLY

2.10%

EXXON

2.04%

JOHNSON&JOHNSON

1.69%

WALMART INC

1.57%

SAMSUNG ELECTR

1.56%

ASML HOLDING

1.44%

MASTERCARD

1.17%

MGC

NVIDIA

8.81%

APPLE

8.15%

MICROSOFT-T

6.02%

AMAZON.COM INC

4.40%

ALPHABET INC-CL

3.66%

BROADCOM LIMITED

3.21%

ALPHABET INC-CL

2.90%

META PLATFORMS

2.74%

TESLA

2.29%

BERKSHIRE HATHWAY

1.81%

LILLY

1.71%

JPMORGAN CHASE

1.62%

EXXON

1.55%

JOHNSON&JOHNSON

1.29%

WALMART INC

1.19%

Frequently asked questions about IOO and MGC

How have the IOO and MGC ETFs performed in 2026?

As of April 24, 2026, IOO is up 5.76% year-to-date (YTD), while MGC has returned 4.35%. That puts IOO better performer ahead so far this year.

Which ETF is attracting more investor money: IOO or MGC?

Year-to-date, the IOO ETF saw -$96M in flows, compared to -$860M for MGC.

Which ETF is more volatile: IOO or MGC?

Over the past year, IOO had a volatility of 13.68%, while MGC experienced 12.94%.

Which ETF is bigger: IOO or MGC?

As of April 24, 2026, IOO holds $8.38 B in assets under management (AUM), while MGC manages $9.33 B.

What sectors do the IOO and MGC ETFs invest in?

IOO leans toward sectors like Information Technology, Communication Services and Health Care. Meanwhile, MGC focuses on Information Technology, Communication Services and Financials.

What are the top holdings of the IOO ETF and MGC ETF?

IOO top holdings include NVIDIA, APPLE and MICROSOFT-T. MGC holds in its top three: NVIDIA, APPLE and MICROSOFT-T.

Which ETF is more diversified: IOO or MGC?

IOO holds 103 securities with 63.39% of its assets in the top 15. MGC has 173 securities and a top 15 weight of 51.35%.

Global Equity Investing: ETF Alternatives to Vanguard's VT

May 24, 2023

IOO

IOOvsMGCETF Comparison

iShares Global 100 ETF

Vanguard Mega Cap ETF

IOO vs MGC performance and flow charts

Performance

Cumulative Flows

Get all the metrics on this page, and more, through a reliable ETF data feed

Countries

Sectors

Diversification

Top 15 holdings

How have the IOO and MGC ETFs performed in 2026?

As of April 24, 2026, IOO is up 5.76% year-to-date (YTD), while MGC has returned 4.35%. That puts IOO better performer ahead so far this year.

Which ETF is attracting more investor money: IOO or MGC?

Year-to-date, the IOO ETF saw -$96M in flows, compared to -$860M for MGC.

Which ETF is more volatile: IOO or MGC?

Over the past year, IOO had a volatility of 13.68%, while MGC experienced 12.94%.

Which ETF is bigger: IOO or MGC?

As of April 24, 2026, IOO holds $8.38 B in assets under management (AUM), while MGC manages $9.33 B.

What sectors do the IOO and MGC ETFs invest in?

IOO leans toward sectors like Information Technology, Communication Services and Health Care. Meanwhile, MGC focuses on Information Technology, Communication Services and Financials.

What are the top holdings of the IOO ETF and MGC ETF?

IOO top holdings include NVIDIA, APPLE and MICROSOFT-T. MGC holds in its top three: NVIDIA, APPLE and MICROSOFT-T.

Which ETF is more diversified: IOO or MGC?

IOO holds 103 securities with 63.39% of its assets in the top 15. MGC has 173 securities and a top 15 weight of 51.35%.

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