iShares Core 1-5 Year USD Bond ETF
ISTB
396 hedge funds and large institutions have $3.82B invested in iShares Core 1-5 Year USD Bond ETF in 2026 Q2 according to their latest regulatory filings, with 39 funds opening new positions, 169 increasing their positions, 128 reducing their positions, and 34 closing their positions.
32% more repeat investments, than reductions
Existing positions increased: 169 | Existing positions reduced: 128
15% more first-time investments, than exits
New positions opened: 39 | Existing positions closed: 34
9% more capital invested
Capital invested by funds: $3.5B → $3.82B (+$321M)
2.16% more ownership
Funds ownership: 72.7% → 74.86% (+2.2%)
1% more funds holding
Funds holding: 394 → 396 (+2)
5% less funds holding in top 10
Funds holding in top 10: 38 → 36 (-2)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
TWP
Triad Wealth Partners
Lawrence,
Kansas
|
+$126M |
| 2 |
BlackRock
New York
|
+$97.9M |
| 3 |
LWM
LJI Wealth Management
Indianapolis,
Indiana
|
+$56.8M |
| 4 |
AA
Acorns Advisers
Irvine,
California
|
+$45.7M |
| 5 |
Jones Financial Companies
Des Peres,
Missouri
|
+$14.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$20M |
| 2 |
JFGIW
Johnson Financial Group Inc (Wisconsin)
Racine,
Wisconsin
|
-$19M |
| 3 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$17.2M |
| 4 |
BWM
Boyd Wealth Management
Sacramento,
California
|
-$13.5M |
| 5 |
KOC
Koss-Olinger Consulting
Gainesville,
Florida
|
-$10.6M |
ISTB Hedge Fund Activity: Q2 2026 in Review
396 institutional investors reported a position in iShares Core 1-5 Year USD Bond ETF (ISTB) for Q2 2026, worth a combined $3.82B — up 9.2% from $3.5B a quarter earlier.
Buyers outnumbered sellers: 39 funds opened new ISTB positions and 34 closed out — a net gain of 5 holders — while 169 added to existing stakes and 128 trimmed.
The largest buyer was Triad Wealth Partners, opening a new position worth an estimated $126M. The largest seller was Citadel Advisors, exiting entirely with an estimated $20M sold.
- 396 institutional investors held iShares Core 1-5 Year USD Bond ETF (ISTB) as of Q2 2026, up from 394 in Q1 2026.
- Funds reported $3.82B of iShares Core 1-5 Year USD Bond ETF stock for Q2 2026, up 9.2% quarter-over-quarter.
- 39 funds opened new iShares Core 1-5 Year USD Bond ETF positions in Q2 2026 and 34 closed out, a net change of +5 holders.
- The largest iShares Core 1-5 Year USD Bond ETF buyer in Q2 2026 was Triad Wealth Partners, an estimated $126M added.
- The largest iShares Core 1-5 Year USD Bond ETF seller in Q2 2026 was Citadel Advisors, an estimated $20M sold.
Based on aggregated 13F filings for Q2 2026.