Harbor Osmosis International Resource Efficient ETF
EFFI
6 hedge funds and large institutions have $135M invested in Harbor Osmosis International Resource Efficient ETF in 2026 Q1 according to their latest regulatory filings, with 2 funds opening new positions, 1 increasing their positions, 1 reducing their positions, and closing their positions.
50% more funds holding
Funds holding: 4 → 6 (+2)
2.63% more ownership
Funds ownership: 99.58% → 102.22% (+2.6%)
1% more capital invested
Capital invested by funds: $134M → $135M (+$1.56M)
0% more repeat investments, than reductions
Existing positions increased: 1 | Existing positions reduced: 1
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
GWP
Gateway Wealth Partners
Appleton,
Wisconsin
|
+$3.75M |
| 2 |
Jane Street
New York
|
+$463K |
| 3 |
UBS Group
Zurich,
Switzerland
|
+$1.66K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
-$14.6K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
1
State of Wisconsin Investment Board
Madison,
Wisconsin
| $130M | – | – | – |
|
|
GWP
2
Gateway Wealth Partners
Appleton,
Wisconsin
| $3.64M | +$3.75M | +153,376 | New |
|
|
3
Fidelity Investments
Boston,
Massachusetts
| $600K | -$14.6K | -598 | -2% |
|
|
4
Jane Street
New York
| $449K | +$463K | +18,915 | New |
|
|
IAIM
5
International Assets Investment Management
Orlando,
Florida
| $24.1K | – | – | – |
|
|
6
UBS Group
Zurich,
Switzerland
| $1.64K | +$1.66K | +68 | +6,800% |
|
EFFI Hedge Fund Activity: Q1 2026 in Review
6 of the 8,133 institutional investors tracked by Wall St. Rank reported a position in Harbor Osmosis International Resource Efficient ETF (EFFI) for Q1 2026, worth a combined $135M — up 1.2% from $134M a quarter earlier.
Buyers outnumbered sellers: 2 funds opened new EFFI positions and 0 closed out — a net gain of 2 holders — while 1 added to existing stakes and 1 trimmed.
The largest buyer was Gateway Wealth Partners, opening a new position worth an estimated $3.75M. The largest seller was Fidelity Investments, cutting an estimated $14.6K.
- 6 institutional investors held Harbor Osmosis International Resource Efficient ETF (EFFI) as of Q1 2026, up from 4 in Q4 2025.
- Funds reported $135M of Harbor Osmosis International Resource Efficient ETF stock for Q1 2026, up 1.2% quarter-over-quarter.
- 2 funds opened new Harbor Osmosis International Resource Efficient ETF positions in Q1 2026 and 0 closed out, a net change of +2 holders.
- The largest Harbor Osmosis International Resource Efficient ETF buyer in Q1 2026 was Gateway Wealth Partners, an estimated $3.75M added.
- The largest Harbor Osmosis International Resource Efficient ETF seller in Q1 2026 was Fidelity Investments, an estimated $14.6K sold.
Based on aggregated 13F filings for Q1 2026.