XT
FSI icon

XTX Topco’s Flexible Solutions FSI Stock Holding History

XTX Topco’s Portfolio FSI Stock Details FSI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$71.1K Buy
13,160
+1,549
+13% +$8.92K ﹤0.01% 3219
2025
Q4 		$78.1K Buy
+11,611
New +$91.7K ﹤0.01% 2707

Other funds holding FSI

Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
NSIM
North Star Investment Management Chicago, Illinois $1.65B AUM 20.56% 1-Year Est. Return
BCM
Beartown Capital Management Huntington Woods, Michigan $209M AUM
RIA
Regal Investment Advisors Kentwood, Michigan $1.73B AUM 17.74% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
EIM
Essex Investment Management Boston, Massachusetts $632M AUM 95.36% 1-Year Est. Return
CAG
Crestwood Advisors Group Boston, Massachusetts $5.94B AUM 18.44% 1-Year Est. Return
QCM
Quantinno Capital Management New York $59.9B AUM 28.07% 1-Year Est. Return

XTX Topco's FSI Position: Q1 2026 in Review

XTX Topco increased its Flexible Solutions (FSI) stake by 13% in Q1 2026, buying an estimated $8.92K and bringing the position to 13,160 shares worth $71.1K. The position accounts for ﹤0.01% of the portfolio, ranked #3219.

XTX Topco first reported a position in FSI in Q4 2025 and has held it in 2 quarters since. The position peaked at $78.1K in Q4 2025. 31 funds tracked by Wall St. Rank hold FSI as of Q1 2026.

  • XTX Topco held 13,160 shares of Flexible Solutions worth $71.1K as of Q1 2026.
  • XTX Topco bought 1,549 Flexible Solutions shares in Q1 2026, an estimated $8.92K.
  • Flexible Solutions made up ﹤0.01% of XTX Topco's portfolio in Q1 2026, its #3219 holding.
  • XTX Topco first reported a position in Flexible Solutions in Q4 2025 and has held it in 2 quarters since.
  • XTX Topco's Flexible Solutions position peaked at $78.1K in Q4 2025.
  • 31 funds tracked by Wall St. Rank held Flexible Solutions as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.