XTX Topco’s Comfort Systems FIX Stock Holding History

XTX Topco’s Portfolio FIX Stock Details FIX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$502K	Sell	364 -717	-66%	-$910K	0.01%	2050
2025 Q4	$1.01M	Buy	+1,081	New	+$998K	0.03%	1018
2025 Q3	–	Sell	-3,048	Closed	-$1.63M	–	2784
2025 Q2	$1.63M	Buy	3,048 +1,499	+97%	+$653K	0.07%	416
2025 Q1	$499K	Buy	1,549 +500	+48%	+$202K	0.03%	1035
2024 Q4	$445K	Sell	1,049 -251	-19%	-$110K	0.04%	869
2024 Q3	$507K	Sell	1,300 -6,172	-83%	-$2.03M	0.04%	806
2024 Q2	$2.27M	Buy	+7,472	New	+$2.38M	0.19%	100
2023 Q4	–	Sell	-4,792	Closed	-$817K	–	1752
2023 Q3	$817K	Buy	4,792 +1,915	+67%	+$336K	0.14%	165
2023 Q2	$472K	Buy	2,877 +1,082	+60%	+$161K	0.08%	405
2023 Q1	$262K	Buy	+1,795	New	+$233K	0.05%	758
2021 Q4	–	Sell	-3,344	Closed	-$238K	–	788
2021 Q3	$238K	Buy	+3,344	New	+$249K	0.08%	425

Other funds holding FIX

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return

XTX Topco's FIX Position: Q1 2026 in Review

XTX Topco reduced its Comfort Systems (FIX) stake by 66% in Q1 2026, selling an estimated $910K and leaving 364 shares worth $502K. The position accounts for 0.01% of the portfolio, ranked #2050.

XTX Topco first reported a position in FIX in Q3 2021 and has held it in 11 quarters since. The position peaked at $2.27M in Q2 2024. 1,195 funds tracked by Wall St. Rank hold FIX as of Q1 2026.

XTX Topco held 364 shares of Comfort Systems worth $502K as of Q1 2026.
XTX Topco sold 717 Comfort Systems shares in Q1 2026, an estimated $910K.
Comfort Systems made up 0.01% of XTX Topco's portfolio in Q1 2026, its #2050 holding.
XTX Topco first reported a position in Comfort Systems in Q3 2021 and has held it in 11 quarters since.
XTX Topco's Comfort Systems position peaked at $2.27M in Q2 2024.
1,195 funds tracked by Wall St. Rank held Comfort Systems as of Q1 2026.

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