State Street SPDR S&P MIDCAP 400 ETF Trust
1,451 hedge funds and large institutions have $15.3B invested in State Street SPDR S&P MIDCAP 400 ETF Trust in 2026 Q1 according to their latest regulatory filings, with 113 funds opening new positions, 323 increasing their positions, 543 reducing their positions, and 68 closing their positions.
66% more first-time investments, than exits
New positions opened: 113 | Existing positions closed: 68
1% more funds holding
Funds holding: 1,432 → 1,451 (+19)
0% more funds holding in top 10
Funds holding in top 10: 58 → 58 (0)
0.33% less ownership
Funds ownership: 64.03% → 63.7% (-0.33%)
2% less capital invested
Capital invested by funds: $15.6B → $15.3B (-$305M)
27% less call options, than puts
Call options by funds: $461M | Put options by funds: $629M
41% less repeat investments, than reductions
Existing positions increased: 323 | Existing positions reduced: 543
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
+$271M |
| 2 |
GAM
Generali Asset Management
Trieste,
Italy
|
+$101M |
| 3 |
CB
Commerce Bank
Kansas City,
Missouri
|
+$72.6M |
| 4 |
EWA
EP Wealth Advisors
Torrance,
California
|
+$49.6M |
| 5 |
BNP Paribas Financial Markets
Paris,
France
|
+$45.5M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Kayne Anderson Rudnick Investment Management
Los Angeles,
California
|
-$212M |
| 2 |
Corient Private Wealth
Miami,
Florida
|
-$159M |
| 3 |
HF
HRT Financial
New York
|
-$157M |
| 4 |
Wells Fargo
San Francisco,
California
|
-$95M |
| 5 |
Goldman Sachs
New York
|
-$92.7M |
MDY Hedge Fund Activity: Q1 2026 in Review
1,451 of the 8,172 institutional investors tracked by Wall St. Rank reported a position in State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) for Q1 2026, worth a combined $15.3B — down 2% from $15.6B a quarter earlier.
Buyers outnumbered sellers: 113 funds opened new MDY positions and 68 closed out — a net gain of 45 holders — while 323 added to existing stakes and 543 trimmed.
The largest buyer was Morgan Stanley, adding an estimated $271M. The largest seller was Kayne Anderson Rudnick Investment Management, cutting an estimated $212M.
- 1,451 institutional investors held State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) as of Q1 2026, up from 1,432 in Q4 2025.
- Funds reported $15.3B of State Street SPDR S&P MIDCAP 400 ETF Trust stock for Q1 2026, down 2% quarter-over-quarter.
- 113 funds opened new State Street SPDR S&P MIDCAP 400 ETF Trust positions in Q1 2026 and 68 closed out, a net change of +45 holders.
- The largest State Street SPDR S&P MIDCAP 400 ETF Trust buyer in Q1 2026 was Morgan Stanley, an estimated $271M added.
- The largest State Street SPDR S&P MIDCAP 400 ETF Trust seller in Q1 2026 was Kayne Anderson Rudnick Investment Management, an estimated $212M sold.
Based on aggregated 13F filings for Q1 2026.