Who owns State Street SPDR S&P 400 Mid Cap Growth ETF?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of MDYG from SEC Form 13F filings across 426 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 426 institutions disclosed 19.0M shares of State Street SPDR S&P 400 Mid Cap Growth ETF worth $2.09B — about 69.3% of shares outstanding; the largest disclosed holder is LPL Financial LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
426
13F holders
$2.09B
value, 2026 filers
69.3%
of shares outstanding (19.0M sh)
59
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of MDYG's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | LPL Financial LLC | 1.8M | $196.4M | 0.0% | 6.4% | +11.7% |
| 2 | Financial Engines Advisors L.L.C. | 1.4M | $160.0M | 0.3% | 5.2% | +12.9% |
| 3 | AE Wealth Management LLC | 1.3M | $146.3M | 0.7% | 4.8% | +7.1% |
| 4 | NorthRock Partners, LLC | 1.2M | $129.3M | 1.9% | 4.2% | +6.5% |
| 5 | MORGAN STANLEY | 845,458 | $94.8M | 0.0% | 3.1% | -0.1% |
| 6 | FAS Wealth Partners, Inc.NEW | 555,604 | $62.3M | 3.2% | 2% | new |
| 7 | RAYMOND JAMES FINANCIAL INC | 511,830 | $57.4M | 0.0% | 1.9% | +2.1% |
| 8 | ENVESTNET ASSET MANAGEMENT INC | 450,660 | $50.5M | 0.0% | 1.6% | -2.2% |
| 9 | Convergence Financial, LLC | 374,287 | $42.0M | 3.3% | 1.4% | -31.8% |
| 10 | Wellspring Financial Advisors, LLC | 367,706 | $378,593 | 0.0% | 1.3% | 0.0% |
| 11 | First National Trust Co | 355,048 | $39.8M | 1.4% | 1.3% | -0.4% |
| 12 | Rehmann Capital Advisory Group | 353,924 | $39.7M | 1.8% | 1.3% | +0.4% |
| 13 | Avantax Planning Partners, Inc. | 347,928 | $39.0M | 1.0% | 1.3% | +8.1% |
| 14 | JONES FINANCIAL COMPANIES LLLP | 339,005 | $37.3M | 0.0% | 1.2% | -12.1% |
| 15 | GHP Investment Advisors, Inc. | 336,389 | $37.7M | 1.4% | 1.2% | +1.9% |
| 16 | Private Advisor Group, LLC | 309,416 | $34.7M | 0.2% | 1.1% | -27.3% |
| 17 | Klingman & Associates, LLC | 297,555 | $33.4M | 1.4% | 1.1% | -8.2% |
| 18 | WCG Wealth Advisors LLC | 279,491 | $31.3M | 0.7% | 1% | -8.5% |
| 19 | HighTower Advisors, LLC | 269,961 | $30.3M | 0.0% | 1% | -1.2% |
| 20 | AMERIPRISE FINANCIAL INC | 235,378 | $26.4M | 0.0% | 0.9% | -3.8% |
| 21 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 235,194 | $26.4M | 0.0% | 0.9% | -8.8% |
| 22 | BANK OF AMERICA CORP /DE/ | 223,354 | $25.0M | 0.0% | 0.8% | +1.3% |
| 23 | COMMONWEALTH EQUITY SERVICES, LLC | 214,737 | $24.1M | 0.0% | 0.8% | -5.1% |
| 24 | TIAA-CREF INDIVIDUAL & INSTITUTIONAL SERVICES, LLC | 187,373 | $21.0M | 0.1% | 0.7% | +3.7% |
| 25 | Rodgers & Associates, LTD | 187,167 | $21.0M | 1.9% | 0.7% | -3.6% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.