State Street SPDR S&P MIDCAP 400 ETF Trust
1,355 hedge funds and large institutions have $14.2B invested in State Street SPDR S&P MIDCAP 400 ETF Trust in 2025 Q2 according to their latest regulatory filings, with 83 funds opening new positions, 333 increasing their positions, 522 reducing their positions, and 67 closing their positions.
32% more call options, than puts
Call options by funds: $535M | Put options by funds: $407M
24% more first-time investments, than exits
New positions opened: 83 | Existing positions closed: 67
7% more capital inflows, than outflows
Capital inflows: $1.02B | Capital outflows: $948M
0.83% more ownership
Funds ownership: 61.27% → 62.1% (+0.83%)
1% less funds holding
Funds holding: 1,366 → 1,355 (-11)
13% less funds holding in top 10
Funds holding in top 10: 67 → 58 (-9)
36% less repeat investments, than reductions
Existing positions increased: 333 | Existing positions reduced: 522
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
+$145M |
| 2 |
Moore Capital Management
New York
|
+$144M |
| 3 |
Goldman Sachs
New York
|
+$127M |
| 4 |
HRT Financial
New York
|
+$56.9M |
| 5 |
Atlantic Union Bankshares
Glen Allen,
Virginia
|
+$48.8M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$119M |
| 2 |
SG Americas Securities
New York
|
-$55.3M |
| 3 |
Kayne Anderson Rudnick Investment Management
Los Angeles,
California
|
-$51.3M |
| 4 |
Millennium Management
New York
|
-$50.2M |
| 5 |
SPX Gestao de Recursos
Rio De Janeiro,
Brazil
|
-$46.3M |
MDY Hedge Fund Activity: Q2 2025 in Review
1,355 of the 7,627 institutional investors tracked by Wall St. Rank reported a position in State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) for Q2 2025, worth a combined $14.2B — up 6% from $13.4B a quarter earlier.
Buyers outnumbered sellers: 83 funds opened new MDY positions and 67 closed out — a net gain of 16 holders — while 333 added to existing stakes and 522 trimmed.
The largest buyer was Morgan Stanley, adding an estimated $145M. The largest seller was Citadel Advisors, cutting an estimated $119M.
- 1,355 institutional investors held State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) as of Q2 2025, down from 1,366 in Q1 2025.
- Funds reported $14.2B of State Street SPDR S&P MIDCAP 400 ETF Trust stock for Q2 2025, up 6% quarter-over-quarter.
- 83 funds opened new State Street SPDR S&P MIDCAP 400 ETF Trust positions in Q2 2025 and 67 closed out, a net change of +16 holders.
- The largest State Street SPDR S&P MIDCAP 400 ETF Trust buyer in Q2 2025 was Morgan Stanley, an estimated $145M added.
- The largest State Street SPDR S&P MIDCAP 400 ETF Trust seller in Q2 2025 was Citadel Advisors, an estimated $119M sold.
Based on aggregated 13F filings for Q2 2025.