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MGC · VANGUARD MEGA CAP INDEX FUND ETF

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$282.81 -1.16 (-0.41%) At close · Sep 4

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →
Holders: 4
Total Value: $11,378,355
Total Shares: 41,583

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 4 13F filers · Δ vs Mar 31, 2026
Top Holder
54.9%
Sep 2023 → Jun 2026 · range 8.9% – 54.9%
+37.1 pts
Top 5
100.0%
Sep 2023 → Jun 2026 · range 24.7% – 100.0%
+63.5 pts
Top 10
100.0%
Sep 2023 → Jun 2026 · range 39.7% – 100.0%
+50.6 pts
HHI
4,341
Sep 2023 → Jun 2026 · range 259 – 4,341
Highly concentrated+3,845

Quarterly Activity

vs Mar 31, 2026
New
0
Increased
2
Decreased
2
Sold Out
502
Unchanged
0
Holder count: -502
Institutional value: -99.7%
Shares held: -99.8%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open
CITADEL ADVISORS LLC +21,739 22,839
Corient Private Wealth LLC +909 4,156

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open
Cornerstone Financial Management LLC −380 14,553
TUCKER ASSET MANAGEMENT LLC −188 35

Top New Positions

vs Mar 31, 2026
No new positions this quarter.

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
ENVESTNET ASSET MANAGEMENT INC 3,397,153 $802,917,111
BANK OF AMERICA CORP /DE/ 1,561,792 $369,129,538
New York Life Investment Management LLC 744,342 $175,925,231
VANTAGEPOINT INVESTMENT ADVISERS LLC 647,882 $153,126,910
MORGAN STANLEY 594,745 $140,567,978
Filter: New 0 Increased 2 Reduced 2 Sold out 502 Unchanged 0
Showing 5 of 5
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
CITADEL ADVISORS LLC MGC $5,620,086 49.39% 20,539
Cornerstone Financial Management LLC MGC $3,982,137 35.00% 14,553
Corient Private Wealth LLC MGC $1,137,206 9.99% 4,156
CITADEL ADVISORS LLC MGC $629,349 5.53% 2,300
TUCKER ASSET MANAGEMENT LLC MGC $9,577 0.08% 35