Mariner
IONR

Mariner’s Ioneer IONR Stock Holding History

Mariner’s Portfolio IONR Stock Details IONR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-10,000
Closed -$44.7K – 3670
2025
Q3 		$44.7K Buy
+10,000
New +$33.5K ﹤0.01% 3463

Other funds holding IONR

Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
GWM
GK Wealth Management Reno, Nevada $190M AUM 66.42% 1-Year Est. Return
VF
Virtu Financial New York $2.41B AUM 48.35% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
OMC
Old Mission Capital Chicago, Illinois $6.3B AUM 14.68% 1-Year Est. Return
HF
HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return
PHS
Pekin Hardy Strauss Chicago, Illinois $1.14B AUM 37.36% 1-Year Est. Return

Mariner's IONR Position: Q4 2025 in Review

Mariner sold out of Ioneer (IONR) in Q4 2025, closing a stake of 10,000 shares — an estimated $44.7K sold.

Mariner first reported a position in IONR in Q3 2025 and held it in 1 quarter. The position peaked at $44.7K in Q3 2025. 23 funds tracked by Wall St. Rank hold IONR as of Q4 2025.

  • Mariner reported no remaining Ioneer position as of Q4 2025 after selling out during the quarter.
  • Mariner sold 10,000 Ioneer shares in Q4 2025, an estimated $44.7K.
  • Mariner first reported a position in Ioneer in Q3 2025 and held it in 1 quarter.
  • Mariner's Ioneer position peaked at $44.7K in Q3 2025.
  • 23 funds tracked by Wall St. Rank held Ioneer as of Q4 2025.

Based on Mariner's 13F filing for Q4 2025, filed 13 Feb 2026.