AltShares Merger Arbitrage ETF
ARB
30 hedge funds and large institutions have $80.4M invested in AltShares Merger Arbitrage ETF in 2025 Q3 according to their latest regulatory filings, with 2 funds opening new positions, 19 increasing their positions, 9 reducing their positions, and 6 closing their positions.
111% more repeat investments, than reductions
Existing positions increased: 19 | Existing positions reduced: 9
0.81% more ownership
Funds ownership: 90.86% → 91.67% (+0.81%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
0% less capital invested
Capital invested by funds: $80.4M → $80.4M (-$37.4K)
14% less funds holding
Funds holding: 35 → 30 (-5)
67% less first-time investments, than exits
New positions opened: 2 | Existing positions closed: 6
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
LAMNM
Longview Asset Management (New Mexico)
Santa Fe,
New Mexico
|
+$1.34M |
| 2 |
NYLIM
New York Life Investment Management
New York
|
+$642K |
| 3 |
Raymond James Financial
St Petersburg,
Florida
|
+$391K |
| 4 |
HighTower Advisors
Chicago,
Illinois
|
+$360K |
| 5 |
SPIA
Steward Partners Investment Advisory
New York
|
+$212K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
HI
Harbour Investments
Madison,
Wisconsin
|
-$3.19M |
| 2 |
AI
Atria Investments
Charlotte,
North Carolina
|
-$720K |
| 3 |
GS
GTS Securities
Miami,
Florida
|
-$548K |
| 4 |
Jane Street
New York
|
-$363K |
| 5 |
Envestnet Portfolio Solutions
Chicago,
Illinois
|
-$305K |
ARB Hedge Fund Activity: Q3 2025 in Review
30 of the 7,640 institutional investors tracked by Wall St. Rank reported a position in AltShares Merger Arbitrage ETF (ARB) for Q3 2025, worth a combined $80.4M — down 0.05% from $80.4M a quarter earlier.
Sellers outnumbered buyers: 6 funds closed out of ARB and 2 opened new positions — a net loss of 4 holders — while 9 trimmed existing stakes and 19 added.
The largest buyer was Longview Asset Management (New Mexico), adding an estimated $1.34M. The largest seller was Harbour Investments, cutting an estimated $3.19M.
- 30 institutional investors held AltShares Merger Arbitrage ETF (ARB) as of Q3 2025, down from 35 in Q2 2025.
- Funds reported $80.4M of AltShares Merger Arbitrage ETF stock for Q3 2025, down 0.05% quarter-over-quarter.
- 2 funds opened new AltShares Merger Arbitrage ETF positions in Q3 2025 and 6 closed out, a net change of -4 holders.
- The largest AltShares Merger Arbitrage ETF buyer in Q3 2025 was Longview Asset Management (New Mexico), an estimated $1.34M added.
- The largest AltShares Merger Arbitrage ETF seller in Q3 2025 was Harbour Investments, an estimated $3.19M sold.
Based on aggregated 13F filings for Q3 2025.