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EFFI

Harbor Osmosis International Resource Efficient ETF
EFFI

2 hedge funds and large institutions have $111M invested in Harbor Osmosis International Resource Efficient ETF in 2025 Q1 according to their latest regulatory filings, with 1 funds opening new positions, 1 increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed

126% more capital invested

Capital invested by funds: $49.2M → $111M (+$62M)

100% more funds holding

Funds holding: 1 → 2 (+1)

6.38% more ownership

Funds ownership: 93.53% → 99.91% (+6.4%)

Holders
2
Holders Change
+1
Holders Change %
+100%
% of All Funds
0.03%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
1
Increased
1
Reduced
–
Closed
–
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
State of Wisconsin Investment Board
State of Wisconsin Investment Board
Wisconsin
+$58.1M
2
Jane Street
Jane Street
New York
+$497K

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
State of Wisconsin Investment Board
1
State of Wisconsin Investment Board
Wisconsin
$111M +$58.1M +2,900,000 +112%
Jane Street
2
Jane Street
New York
$499K +$497K +24,823 New

EFFI Hedge Fund Activity: Q1 2025 in Review

2 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in Harbor Osmosis International Resource Efficient ETF (EFFI) for Q1 2025, worth a combined $111M — up 126% from $49.2M a quarter earlier.

Buyers outnumbered sellers: 1 fund opened new EFFI positions and 0 closed out — a net gain of 1 holder — while 1 added to existing stakes and 0 trimmed.

The largest buyer was State of Wisconsin Investment Board, adding an estimated $58.1M.

  • 2 institutional investors held Harbor Osmosis International Resource Efficient ETF (EFFI) as of Q1 2025, up from 1 in Q4 2024.
  • Funds reported $111M of Harbor Osmosis International Resource Efficient ETF stock for Q1 2025, up 126% quarter-over-quarter.
  • 1 fund opened new Harbor Osmosis International Resource Efficient ETF positions in Q1 2025 and 0 closed out, a net change of +1 holder.
  • The largest Harbor Osmosis International Resource Efficient ETF buyer in Q1 2025 was State of Wisconsin Investment Board, an estimated $58.1M added.

Based on aggregated 13F filings for Q1 2025.