iShares Paris-Aligned Climate Optimized MSCI USA ETF
PABU
26 hedge funds and large institutions have $1.55B invested in iShares Paris-Aligned Climate Optimized MSCI USA ETF in 2025 Q4 according to their latest regulatory filings, with 4 funds opening new positions, 7 increasing their positions, 8 reducing their positions, and 3 closing their positions.
265% more capital invested
Capital invested by funds: $424M → $1.55B (+$1.12B)
100% more funds holding in top 10
Funds holding in top 10: 1 → 2 (+1)
49.6% more ownership
Funds ownership: 18.5% → 68.1% (+50%)
33% more first-time investments, than exits
New positions opened: 4 | Existing positions closed: 3
4% more funds holding
Funds holding: 25 → 26 (+1)
13% less repeat investments, than reductions
Existing positions increased: 7 | Existing positions reduced: 8
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CPO
Cerity Partners OCIO
New York
|
+$4.64M |
| 2 |
Two Sigma Investments
New York
|
+$1.9M |
| 3 |
BOF
Bank of Finland
Helsinki,
Finland
|
+$1.25M |
| 4 |
Vontobel Holding
Zurich,
Switzerland
|
+$922K |
| 5 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$532K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
UBS Group
Zurich,
Switzerland
|
-$3.89M |
| 2 |
Citadel Advisors
Miami,
Florida
|
-$3.17M |
| 3 |
Jane Street
New York
|
-$2.85M |
| 4 |
Bank of America
Charlotte,
North Carolina
|
-$890K |
| 5 |
AG
AlTi Global
New York
|
-$884K |
PABU Hedge Fund Activity: Q4 2025 in Review
26 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in iShares Paris-Aligned Climate Optimized MSCI USA ETF (PABU) for Q4 2025, worth a combined $1.55B — up 265% from $424M a quarter earlier.
Buyers outnumbered sellers: 4 funds opened new PABU positions and 3 closed out — a net gain of 1 holder — while 7 added to existing stakes and 8 trimmed.
The largest buyer was Cerity Partners OCIO, adding an estimated $4.64M. The largest seller was UBS Group, cutting an estimated $3.89M.
- 26 institutional investors held iShares Paris-Aligned Climate Optimized MSCI USA ETF (PABU) as of Q4 2025, up from 25 in Q3 2025.
- Funds reported $1.55B of iShares Paris-Aligned Climate Optimized MSCI USA ETF stock for Q4 2025, up 265% quarter-over-quarter.
- 4 funds opened new iShares Paris-Aligned Climate Optimized MSCI USA ETF positions in Q4 2025 and 3 closed out, a net change of +1 holder.
- The largest iShares Paris-Aligned Climate Optimized MSCI USA ETF buyer in Q4 2025 was Cerity Partners OCIO, an estimated $4.64M added.
- The largest iShares Paris-Aligned Climate Optimized MSCI USA ETF seller in Q4 2025 was UBS Group, an estimated $3.89M sold.
Based on aggregated 13F filings for Q4 2025.