State Street SPDR S&P MIDCAP 400 ETF Trust
1,363 hedge funds and large institutions have $15B invested in State Street SPDR S&P MIDCAP 400 ETF Trust in 2025 Q3 according to their latest regulatory filings, with 87 funds opening new positions, 355 increasing their positions, 482 reducing their positions, and 45 closing their positions.
93% more first-time investments, than exits
New positions opened: 87 | Existing positions closed: 45
64% more call options, than puts
Call options by funds: $499M | Put options by funds: $305M
6% more capital invested
Capital invested by funds: $14.2B → $15B (+$837M)
2% more funds holding in top 10
Funds holding in top 10: 57 → 58 (+1)
1% more funds holding
Funds holding: 1,346 → 1,363 (+17)
1.12% more ownership
Funds ownership: 62.73% → 63.84% (+1.1%)
26% less repeat investments, than reductions
Existing positions increased: 355 | Existing positions reduced: 482
Top Buyers
Top Sellers
| 1 |
MCM
Moore Capital Management
New York
|
-$172M |
| 2 |
Bank of America
Charlotte,
North Carolina
|
-$107M |
| 3 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$57.5M |
| 4 |
JP Morgan Chase
New York
|
-$47.3M |
| 5 |
SG Americas Securities
New York
|
-$39.8M |
MDY Hedge Fund Activity: Q3 2025 in Review
1,363 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) for Q3 2025, worth a combined $15B — up 5.9% from $14.2B a quarter earlier.
Buyers outnumbered sellers: 87 funds opened new MDY positions and 45 closed out — a net gain of 42 holders — while 355 added to existing stakes and 482 trimmed.
The largest buyer was Morgan Stanley, adding an estimated $269M. The largest seller was Moore Capital Management, cutting an estimated $172M.
- 1,363 institutional investors held State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) as of Q3 2025, up from 1,346 in Q2 2025.
- Funds reported $15B of State Street SPDR S&P MIDCAP 400 ETF Trust stock for Q3 2025, up 5.9% quarter-over-quarter.
- 87 funds opened new State Street SPDR S&P MIDCAP 400 ETF Trust positions in Q3 2025 and 45 closed out, a net change of +42 holders.
- The largest State Street SPDR S&P MIDCAP 400 ETF Trust buyer in Q3 2025 was Morgan Stanley, an estimated $269M added.
- The largest State Street SPDR S&P MIDCAP 400 ETF Trust seller in Q3 2025 was Moore Capital Management, an estimated $172M sold.
Based on aggregated 13F filings for Q3 2025.