MGC · VANGUARD MEGA CAP INDEX FUND ETF
$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.
Holders: 4
Total Value: $11,378,355
Total Shares: 41,583
Institutional Ownership Trend
18 quarters
Holder Concentration
Across 4 13F filers · Δ vs Mar 31, 2026Top Holder
54.9%
−43.6 pts
Top 5
100.0%
0.0 pts
Top 10
100.0%
0.0 pts
HHI
4,341
Highly concentrated−5,369
Quarterly Activity
vs Mar 31, 2026
New
2
Increased
0
Decreased
2
Sold Out
0
Unchanged
0
Holder count:
+2
Institutional value:
+217.6%
Shares held:
+174.4%
Top Buyers
vs Mar 31, 2026No qualifying movers this quarter.
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Small Cornerstone Financial Management LLC | −380 | 14,553 | |
| Small TUCKER ASSET MANAGEMENT LLC | −188 | 35 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | 22,839 | $6,249,435 | |
| Large Corient Private Wealth LLC | 4,156 | $1,137,206 |
Top Sold-Out Positions
vs Mar 31, 2026No fully closed positions this quarter.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega CITADEL ADVISORS LLC MGC | $5,620,086 | 49.39% | 20,539 | Shares | 2026-09-02 | |
| Small Cornerstone Financial Management LLC MGC | $3,982,137 | 35.00% | 14,553 | Shares | 2026-08-28 | |
| Large Corient Private Wealth LLC MGC | $1,137,206 | 9.99% | 4,156 | Shares | 2026-08-27 | |
| Mega CITADEL ADVISORS LLC MGC | $629,349 | 5.53% | 2,300 | Call | 2026-09-02 | |
| Small TUCKER ASSET MANAGEMENT LLC MGC | $9,577 | 0.08% | 35 | Shares | 2026-08-27 |