State Street SPDR Portfolio Mortgage Backed Bond ETF
SPMB
227 hedge funds and large institutions have $6.08B invested in State Street SPDR Portfolio Mortgage Backed Bond ETF in 2025 Q3 according to their latest regulatory filings, with 28 funds opening new positions, 100 increasing their positions, 68 reducing their positions, and 19 closing their positions.
47% more first-time investments, than exits
New positions opened: 28 | Existing positions closed: 19
47% more repeat investments, than reductions
Existing positions increased: 100 | Existing positions reduced: 68
2% more capital invested
Capital invested by funds: $5.98B → $6.08B (+$103M)
1% more funds holding
Funds holding: 225 → 227 (+2)
0% more funds holding in top 10
Funds holding in top 10: 11 → 11 (0)
2.16% less ownership
Funds ownership: 96.73% → 94.57% (-2.2%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
LPL Financial
San Diego,
California
|
+$43.9M |
| 2 |
Financial Engines Advisors
Santa Clara,
California
|
+$36.9M |
| 3 |
Baird Financial Group
Milwaukee,
Wisconsin
|
+$15.4M |
| 4 |
CI
CX Institutional
Auburn,
Indiana
|
+$9.46M |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$8.01M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
State Street
Boston,
Massachusetts
|
-$64.2M |
| 2 |
Wells Fargo
San Francisco,
California
|
-$25.4M |
| 3 |
Stifel Financial
St. Louis,
Missouri
|
-$15.9M |
| 4 |
CIM
Confluence Investment Management
St. Louis,
Missouri
|
-$11.2M |
| 5 |
BEI
Benjamin Edwards Inc
Clayton,
Missouri
|
-$10.1M |
SPMB Hedge Fund Activity: Q3 2025 in Review
227 of the 7,638 institutional investors tracked by Wall St. Rank reported a position in State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) for Q3 2025, worth a combined $6.08B — up 1.7% from $5.98B a quarter earlier.
Buyers outnumbered sellers: 28 funds opened new SPMB positions and 19 closed out — a net gain of 9 holders — while 100 added to existing stakes and 68 trimmed.
The largest buyer was LPL Financial, adding an estimated $43.9M. The largest seller was State Street, cutting an estimated $64.2M.
- 227 institutional investors held State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) as of Q3 2025, up from 225 in Q2 2025.
- Funds reported $6.08B of State Street SPDR Portfolio Mortgage Backed Bond ETF stock for Q3 2025, up 1.7% quarter-over-quarter.
- 28 funds opened new State Street SPDR Portfolio Mortgage Backed Bond ETF positions in Q3 2025 and 19 closed out, a net change of +9 holders.
- The largest State Street SPDR Portfolio Mortgage Backed Bond ETF buyer in Q3 2025 was LPL Financial, an estimated $43.9M added.
- The largest State Street SPDR Portfolio Mortgage Backed Bond ETF seller in Q3 2025 was State Street, an estimated $64.2M sold.
Based on aggregated 13F filings for Q3 2025.