XT
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XTX Topco’s Research Frontiers REFR Stock Holding History

XTX Topco’s Portfolio REFR Stock Details REFR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$9.1K Sell
17,504
-15,466
-47% -$12.4K ﹤0.01% 4034
2026
Q1 		$29.7K Buy
32,970
+11,913
+57% +$13K ﹤0.01% 3453
2025
Q4 		$27.6K Buy
+21,057
New +$35.6K ﹤0.01% 2989

Other funds holding REFR

MOS
MGO One Seven Beachwood, Ohio $6.06B AUM 28.9% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Focus Partners Wealth
Focus Partners Wealth Boston, Massachusetts $97.6B AUM 29.43% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
SRC
Shufro Rose & Co New York $1.74B AUM 34.09% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

XTX Topco's REFR Position: Q2 2026 in Review

XTX Topco reduced its Research Frontiers (REFR) stake by 47% in Q2 2026, selling an estimated $12.4K and leaving 17,504 shares worth $9.1K. The position accounts for ﹤0.01% of the portfolio, ranked #4034.

XTX Topco first reported a position in REFR in Q4 2025 and has held it in 3 quarters since. The position peaked at $29.7K in Q1 2026. 34 funds tracked by Wall St. Rank hold REFR as of Q2 2026.

  • XTX Topco held 17,504 shares of Research Frontiers worth $9.1K as of Q2 2026.
  • XTX Topco sold 15,466 Research Frontiers shares in Q2 2026, an estimated $12.4K.
  • Research Frontiers made up ﹤0.01% of XTX Topco's portfolio in Q2 2026, its #4034 holding.
  • XTX Topco first reported a position in Research Frontiers in Q4 2025 and has held it in 3 quarters since.
  • XTX Topco's Research Frontiers position peaked at $29.7K in Q1 2026.
  • 34 funds tracked by Wall St. Rank held Research Frontiers as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.