iShares National Muni Bond ETF
1,638 hedge funds and large institutions have $40.1B invested in iShares National Muni Bond ETF in 2026 Q2 according to their latest regulatory filings, with 116 funds opening new positions, 787 increasing their positions, 509 reducing their positions, and 77 closing their positions.
55% more repeat investments, than reductions
Existing positions increased: 787 | Existing positions reduced: 509
51% more first-time investments, than exits
New positions opened: 116 | Existing positions closed: 77
6% more capital invested
Capital invested by funds: $37.8B → $40.1B (+$2.25B)
0% more funds holding
Funds holding: 1,630 → 1,638 (+8)
1.15% less ownership
Funds ownership: 88.69% → 87.54% (-1.1%)
15% less funds holding in top 10
Funds holding in top 10: 96 → 82 (-14)
63% less call options, than puts
Call options by funds: $68.6M | Put options by funds: $184M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Bank of America
Charlotte,
North Carolina
|
+$277M |
| 2 |
Betterment LLC
New York
|
+$156M |
| 3 |
Fisher Asset Management
Camas,
Washington
|
+$113M |
| 4 |
Mercer Global Advisors
Denver,
Colorado
|
+$107M |
| 5 |
LPL Financial
San Diego,
California
|
+$106M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
-$144M |
| 2 |
Jane Street
New York
|
-$48.4M |
| 3 |
Corient Private Wealth
Miami,
Florida
|
-$47.3M |
| 4 |
UBS AM
Chicago,
Illinois
|
-$40.9M |
| 5 |
KIM
Kestra Investment Management
Austin,
Texas
|
-$32.1M |
MUB Hedge Fund Activity: Q2 2026 in Review
1,638 of the 8,305 institutional investors tracked by Wall St. Rank reported a position in iShares National Muni Bond ETF (MUB) for Q2 2026, worth a combined $40.1B — up 6% from $37.8B a quarter earlier.
Buyers outnumbered sellers: 116 funds opened new MUB positions and 77 closed out — a net gain of 39 holders — while 787 added to existing stakes and 509 trimmed.
The largest buyer was Bank of America, adding an estimated $277M. The largest seller was Morgan Stanley, cutting an estimated $144M.
- 1,638 institutional investors held iShares National Muni Bond ETF (MUB) as of Q2 2026, up from 1,630 in Q1 2026.
- Funds reported $40.1B of iShares National Muni Bond ETF stock for Q2 2026, up 6% quarter-over-quarter.
- 116 funds opened new iShares National Muni Bond ETF positions in Q2 2026 and 77 closed out, a net change of +39 holders.
- The largest iShares National Muni Bond ETF buyer in Q2 2026 was Bank of America, an estimated $277M added.
- The largest iShares National Muni Bond ETF seller in Q2 2026 was Morgan Stanley, an estimated $144M sold.
Based on aggregated 13F filings for Q2 2026.