iShares Core US Aggregate Bond ETF
AGG
2,112 hedge funds and large institutions have $120B invested in iShares Core US Aggregate Bond ETF in 2025 Q4 according to their latest regulatory filings, with 319 funds opening new positions, 999 increasing their positions, 574 reducing their positions, and 97 closing their positions.
478% more call options, than puts
Call options by funds: $8.31M | Put options by funds: $1.44M
229% more first-time investments, than exits
New positions opened: 319 | Existing positions closed: 97
74% more repeat investments, than reductions
Existing positions increased: 999 | Existing positions reduced: 574
14% more funds holding in top 10
Funds holding in top 10: 337 → 385 (+48)
9% more funds holding
Funds holding: 1,932 → 2,112 (+180)
3% more capital invested
Capital invested by funds: $116B → $120B (+$3.69B)
0.63% more ownership
Funds ownership: 90.27% → 90.9% (+0.63%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Bank of America
Charlotte,
North Carolina
|
+$744M |
| 2 |
Raymond James Financial
St Petersburg,
Florida
|
+$553M |
| 3 |
Northern Trust
Chicago,
Illinois
|
+$416M |
| 4 |
Mercer Global Advisors
Denver,
Colorado
|
+$304M |
| 5 |
CI
Constellation Investments
Montgomery,
Ohio
|
+$292M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Mastercard Foundation Asset Management (MFAM)
Toronto,
Ontario, Canada
|
-$1.49B |
| 2 |
Jones Financial Companies
Des Peres,
Missouri
|
-$538M |
| 3 |
JHU
Johns Hopkins University
Baltimore,
Maryland
|
-$354M |
| 4 |
Wells Fargo
San Francisco,
California
|
-$307M |
| 5 |
Fidelity Investments
Boston,
Massachusetts
|
-$241M |
AGG Hedge Fund Activity: Q4 2025 in Review
2,112 of the 8,284 institutional investors tracked by Wall St. Rank reported a position in iShares Core US Aggregate Bond ETF (AGG) for Q4 2025, worth a combined $120B — up 3.2% from $116B a quarter earlier.
Buyers outnumbered sellers: 319 funds opened new AGG positions and 97 closed out — a net gain of 222 holders — while 999 added to existing stakes and 574 trimmed.
The largest buyer was Bank of America, adding an estimated $744M. The largest seller was Mastercard Foundation Asset Management (MFAM), cutting an estimated $1.49B.
- 2,112 institutional investors held iShares Core US Aggregate Bond ETF (AGG) as of Q4 2025, up from 1,932 in Q3 2025.
- Funds reported $120B of iShares Core US Aggregate Bond ETF stock for Q4 2025, up 3.2% quarter-over-quarter.
- 319 funds opened new iShares Core US Aggregate Bond ETF positions in Q4 2025 and 97 closed out, a net change of +222 holders.
- The largest iShares Core US Aggregate Bond ETF buyer in Q4 2025 was Bank of America, an estimated $744M added.
- The largest iShares Core US Aggregate Bond ETF seller in Q4 2025 was Mastercard Foundation Asset Management (MFAM), an estimated $1.49B sold.
Based on aggregated 13F filings for Q4 2025.