abrdn Ultra Short Municipal Income Active ETF
AMUN
8 hedge funds and large institutions have $3.06M invested in abrdn Ultra Short Municipal Income Active ETF in 2026 Q1 according to their latest regulatory filings, with 5 funds opening new positions, 2 increasing their positions, 1 reducing their positions, and 3 closing their positions.
100% more repeat investments, than reductions
Existing positions increased: 2 | Existing positions reduced: 1
82% more capital invested
Capital invested by funds: $1.68M → $3.06M (+$1.38M)
67% more first-time investments, than exits
New positions opened: 5 | Existing positions closed: 3
33% more funds holding
Funds holding: 6 → 8 (+2)
4.64% more ownership
Funds ownership: 5.65% → 10.29% (+4.6%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$1.12M |
| 2 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$750K |
| 3 |
Cambridge Investment Research Advisors
Fairfield,
Iowa
|
+$227K |
| 4 |
Jones Financial Companies
Des Peres,
Missouri
|
+$135K |
| 5 |
AF
Advisornet Financial
Minnetonka,
Minnesota
|
+$95.2K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
LPL Financial
San Diego,
California
|
-$456K |
| 2 |
Jane Street
New York
|
-$426K |
| 3 |
Osaic Holdings
Scottsdale,
Arizona
|
-$60.1K |
| 4 |
Fidelity Investments
Boston,
Massachusetts
|
-$7.85K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
1
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
| $1.33M | +$750K | +28,747 | +130% |
|
|
2
Citadel Advisors
Miami,
Florida
| $1.12M | +$1.12M | +42,917 | New |
|
|
3
Cambridge Investment Research Advisors
Fairfield,
Iowa
| $226K | +$227K | +8,681 | New |
|
|
CIAS
4
CBIZ Investment Advisory Services
Independence,
Ohio
| $135K | +$626 | +24 | +0.5% |
|
|
5
Jones Financial Companies
Des Peres,
Missouri
| $135K | +$135K | +5,167 | New |
|
|
AF
6
Advisornet Financial
Minnetonka,
Minnesota
| $95.2K | +$95.2K | +3,650 | New |
|
|
7
Fidelity Investments
Boston,
Massachusetts
| $18.3K | -$7.85K | -301 | -30% |
|
8
UBS Group
Zurich,
Switzerland
| $4.28K | +$4.28K | +164 | New |
|
|
9
LPL Financial
San Diego,
California
| – | -$456K | -17,508 | Closed |
|
|
10
Jane Street
New York
| – | -$426K | -16,332 | Closed |
|
|
11
Osaic Holdings
Scottsdale,
Arizona
| – | -$60.1K | -2,306 | Closed |
|
AMUN Hedge Fund Activity: Q1 2026 in Review
8 of the 8,131 institutional investors tracked by Wall St. Rank reported a position in abrdn Ultra Short Municipal Income Active ETF (AMUN) for Q1 2026, worth a combined $3.06M — up 82% from $1.68M a quarter earlier.
Buyers outnumbered sellers: 5 funds opened new AMUN positions and 3 closed out — a net gain of 2 holders — while 2 added to existing stakes and 1 trimmed.
The largest buyer was Citadel Advisors, opening a new position worth an estimated $1.12M. The largest seller was LPL Financial, exiting entirely with an estimated $456K sold.
- 8 institutional investors held abrdn Ultra Short Municipal Income Active ETF (AMUN) as of Q1 2026, up from 6 in Q4 2025.
- Funds reported $3.06M of abrdn Ultra Short Municipal Income Active ETF stock for Q1 2026, up 82% quarter-over-quarter.
- 5 funds opened new abrdn Ultra Short Municipal Income Active ETF positions in Q1 2026 and 3 closed out, a net change of +2 holders.
- The largest abrdn Ultra Short Municipal Income Active ETF buyer in Q1 2026 was Citadel Advisors, an estimated $1.12M added.
- The largest abrdn Ultra Short Municipal Income Active ETF seller in Q1 2026 was LPL Financial, an estimated $456K sold.
Based on aggregated 13F filings for Q1 2026.