iShares Core Universal USD Bond ETF
IUSB
840 hedge funds and large institutions have $35.3B invested in iShares Core Universal USD Bond ETF in 2026 Q1 according to their latest regulatory filings, with 77 funds opening new positions, 461 increasing their positions, 213 reducing their positions, and 60 closing their positions.
116% more repeat investments, than reductions
Existing positions increased: 461 | Existing positions reduced: 213
28% more first-time investments, than exits
New positions opened: 77 | Existing positions closed: 60
15% more funds holding in top 10
Funds holding in top 10: 94 → 108 (+14)
0.49% more ownership
Funds ownership: 97.85% → 98.34% (+0.49%)
0% less funds holding
Funds holding: 841 → 840 (-1)
2% less capital invested
Capital invested by funds: $36.2B → $35.3B (-$899M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Envestnet Asset Management
Chicago,
Illinois
|
+$652M |
| 2 |
JFGIW
Johnson Financial Group Inc (Wisconsin)
Racine,
Wisconsin
|
+$232M |
| 3 |
GFA
Gallagher Fiduciary Advisors
Rolling Meadows,
Illinois
|
+$154M |
| 4 |
KIM
Kestra Investment Management
Austin,
Texas
|
+$142M |
| 5 |
Jones Financial Companies
Des Peres,
Missouri
|
+$141M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AF
Align Financial
Hermantown,
Minnesota
|
-$129M |
| 2 |
US Bancorp
Minneapolis,
Minnesota
|
-$68.7M |
| 3 |
BlackRock
New York
|
-$52M |
| 4 |
Corient Private Wealth
Miami,
Florida
|
-$27.3M |
| 5 |
CAS
Coppell Advisory Solutions
Coppell,
Texas
|
-$21.4M |
IUSB Hedge Fund Activity: Q1 2026 in Review
840 of the 8,173 institutional investors tracked by Wall St. Rank reported a position in iShares Core Universal USD Bond ETF (IUSB) for Q1 2026, worth a combined $35.3B — down 2.5% from $36.2B a quarter earlier.
Buyers outnumbered sellers: 77 funds opened new IUSB positions and 60 closed out — a net gain of 17 holders — while 461 added to existing stakes and 213 trimmed.
The largest buyer was Envestnet Asset Management, adding an estimated $652M. The largest seller was Align Financial, cutting an estimated $129M.
- 840 institutional investors held iShares Core Universal USD Bond ETF (IUSB) as of Q1 2026, down from 841 in Q4 2025.
- Funds reported $35.3B of iShares Core Universal USD Bond ETF stock for Q1 2026, down 2.5% quarter-over-quarter.
- 77 funds opened new iShares Core Universal USD Bond ETF positions in Q1 2026 and 60 closed out, a net change of +17 holders.
- The largest iShares Core Universal USD Bond ETF buyer in Q1 2026 was Envestnet Asset Management, an estimated $652M added.
- The largest iShares Core Universal USD Bond ETF seller in Q1 2026 was Align Financial, an estimated $129M sold.
Based on aggregated 13F filings for Q1 2026.