Ioneer
IONR
13 hedge funds and large institutions have $583K invested in Ioneer in 2025 Q3 according to their latest regulatory filings, with 4 funds opening new positions, 3 increasing their positions, 2 reducing their positions, and 3 closing their positions.
248% more capital invested
Capital invested by funds: $168K → $583K (+$416K)
50% more repeat investments, than reductions
Existing positions increased: 3 | Existing positions reduced: 2
33% more first-time investments, than exits
New positions opened: 4 | Existing positions closed: 3
8% more funds holding
Funds holding: 12 → 13 (+1)
0.1% more ownership
Funds ownership: 0.1% → 0.2% (+0.1%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jane Street
New York
|
+$181K |
| 2 |
LPL Financial
San Diego,
California
|
+$37.5K |
| 3 |
Mariner
Overland Park,
Kansas
|
+$33.5K |
| 4 |
Morgan Stanley
New York
|
+$20.4K |
| 5 |
GWM
GK Wealth Management
Reno,
Nevada
|
+$6.02K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$42.8K |
| 2 |
UBS Group
Zurich,
Switzerland
|
-$2.36K |
| 3 |
Osaic Holdings
Scottsdale,
Arizona
|
-$1K |
| 4 |
BNP Paribas Financial Markets
Paris,
France
|
-$522 |
| 5 |
Bank of America
Charlotte,
North Carolina
|
-$5 |
IONR Hedge Fund Activity: Q3 2025 in Review
13 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in Ioneer (IONR) for Q3 2025, worth a combined $583K — up 248% from $168K a quarter earlier.
Buyers outnumbered sellers: 4 funds opened new IONR positions and 3 closed out — a net gain of 1 holder — while 3 added to existing stakes and 2 trimmed.
The largest buyer was Jane Street, opening a new position worth an estimated $181K. The largest seller was Citadel Advisors, exiting entirely with an estimated $42.8K sold.
- 13 institutional investors held Ioneer (IONR) as of Q3 2025, up from 12 in Q2 2025.
- Funds reported $583K of Ioneer stock for Q3 2025, up 248% quarter-over-quarter.
- 4 funds opened new Ioneer positions in Q3 2025 and 3 closed out, a net change of +1 holder.
- The largest Ioneer buyer in Q3 2025 was Jane Street, an estimated $181K added.
- The largest Ioneer seller in Q3 2025 was Citadel Advisors, an estimated $42.8K sold.
Based on aggregated 13F filings for Q3 2025.