Ken Griffin Comfort Systems Usa Inc Transaction History

Citadel Advisors LLC

$618 Billion
Q3 2025

A detailed history of Ken Griffin (Citadel Advisors LLC) transactions in Comfort Systems Usa Inc stock. As of the latest transaction made, Citadel Advisors LLC holds 69,204 shares of FIX stock, worth $62.9 Million. This represents 0.01% of its overall portfolio holdings.

Number of Shares

69,204

Previous 64,323 7.59%

Holding current value

$62.9 Million

Previous $34.5 Million 65.57%

% of portfolio

0.01%

Previous 0.01%

33 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	BUY	$521.66 - $825.18 $2.55 Million - $4.03 Million	4,881 Added 7.59%	69,204 $57.1 Million
Q2 2025 Aug 14, 2025	SELL	$296.51 - $536.21 $38.4 Million - $69.4 Million	-129,398 Reduced 66.8%	64,323 $34.5 Million
Q1 2025 May 15, 2025	BUY	$313.26 - $550.27 $52.7 Million - $92.5 Million	168,176 Added 658.35%	193,721 $62.4 Million
Q4 2024 Feb 14, 2025	SELL	$370.68 - $504.12 $5.88 Million - $8 Million	-15,876 Reduced 38.33%	25,545 $10.8 Million
Q3 2024 Nov 14, 2024	BUY	$292.14 - $396.82 $879,049 - $1.19 Million	3,009 Added 7.83%	41,421 $16.2 Million

Q2 2024 Aug 14, 2024	SELL	$290.73 - $347.21 $12.3 Million - $14.7 Million	-42,254 Reduced 52.38%	38,412 $11.7 Million
Q1 2024 May 15, 2024	BUY	$195.89 - $323.29 $4.12 Million - $6.81 Million	21,050 Added 35.31%	80,666 $25.6 Million
Q4 2023 Feb 14, 2024	BUY	$152.12 - $209.24 $6.21 Million - $8.54 Million	40,835 Added 217.43%	59,616 $12.3 Million
Q3 2023 Nov 14, 2023	SELL	$159.77 - $188.65 $66,144 - $78,101	-414 Reduced 2.16%	18,781 $3.2 Million
Q2 2023 Aug 14, 2023	SELL	$129.31 - $166.3 $32.4 Million - $41.7 Million	-250,502 Reduced 92.88%	19,195 $3.15 Million
Q1 2023 May 15, 2023	BUY	$111.86 - $151.04 $12.8 Million - $17.2 Million	114,011 Added 73.23%	269,697 $39.4 Million
Q4 2022 Feb 14, 2023	BUY	$100.76 - $126.92 $3.11 Million - $3.92 Million	30,856 Added 24.72%	155,686 $17.9 Million
Q3 2022 Nov 14, 2022	BUY	$84.09 - $108.44 $7.79 Million - $10 Million	92,599 Added 287.3%	124,830 $12.2 Million
Q2 2022 Aug 15, 2022	BUY	$75.33 - $92.56 $450,473 - $553,508	5,980 Added 22.78%	32,231 $2.68 Million
Q1 2022 May 16, 2022	BUY	$82.68 - $99.27 $235,472 - $282,720	2,848 Added 12.17%	26,251 $2.34 Million
Q4 2021 Feb 14, 2022	SELL	$74.06 - $102.81 $1.59 Million - $2.21 Million	-21,535 Reduced 47.92%	23,403 $2.32 Million
Q3 2021 Nov 15, 2021	BUY	$69.14 - $79.12 $1.38 Million - $1.58 Million	19,963 Added 79.93%	44,938 $3.21 Million
Q2 2021 Aug 16, 2021	SELL	$75.0 - $86.87 $1.62 Million - $1.87 Million	-21,580 Reduced 46.35%	24,975 $1.97 Million
Q1 2021 May 17, 2021	SELL	$51.58 - $75.2 $2.34 Million - $3.4 Million	-45,271 Reduced 49.3%	46,555 $3.48 Million
Q4 2020 Feb 16, 2021	BUY	$44.22 - $57.98 $1.06 Million - $1.39 Million	23,952 Added 35.29%	91,826 $4.84 Million
Q3 2020 Nov 16, 2020	SELL	$37.75 - $55.13 $3.11 Million - $4.55 Million	-82,476 Reduced 54.86%	67,874 $3.5 Million
Q2 2020 Aug 14, 2020	SELL	$29.47 - $42.74 $4.72 Million - $6.85 Million	-160,292 Reduced 51.6%	150,350 $6.13 Million
Q1 2020 May 15, 2020	SELL	$29.95 - $50.25 $1.48 Million - $2.49 Million	-49,555 Reduced 13.76%	310,642 $11.4 Million
Q4 2019 Feb 14, 2020	BUY	$41.74 - $52.3 $3.24 Million - $4.05 Million	77,506 Added 27.42%	360,197 $18 Million
Q3 2019 Nov 14, 2019	BUY	$36.57 - $53.15 $3.72 Million - $5.41 Million	101,773 Added 56.25%	282,691 $12.5 Million
Q2 2019 Aug 14, 2019	BUY	$47.18 - $57.75 $261,849 - $320,512	5,550 Added 3.16%	180,918 $9.23 Million
Q1 2019 May 15, 2019	SELL	$43.05 - $54.44 $671,192 - $848,774	-15,591 Reduced 8.16%	175,368 $0
Q4 2018 Feb 14, 2019	BUY	$41.3 - $59.2 $5.35 Million - $7.68 Million	129,656 Added 211.5%	190,959 $8.34 Million
Q3 2018 Nov 13, 2018	BUY	$46.25 - $58.35 $270,701 - $341,522	5,853 Added 10.56%	61,303 $0
Q2 2018 Aug 10, 2018	BUY	$40.15 - $48.6 $1.4 Million - $1.69 Million	34,776 Added 168.21%	55,450 $0
Q1 2018 May 11, 2018	SELL	$39.85 - $44.45 $1.36 Million - $1.52 Million	-34,146 Reduced 62.29%	20,674 $853,000
Q4 2017 Feb 09, 2018	SELL	$35.7 - $44.65 $236,191 - $295,404	-6,616 Reduced 10.77%	54,820 $2.39 Million
Q3 2017 Nov 09, 2017	BUY	$32.55 - $36.55 $2 Million - $2.25 Million	61,436	61,436 $2.19 Million

Others Institutions Holding FIX

# of Institutions

955

Shares Held

32.7M

Call Options Held

167K

Put Options Held

228K

View Full List

About COMFORT SYSTEMS USA INC

Ticker FIX
Exchange NYSE
Sector Industrials
Industry Engineering & Construction
Shares Outstandng 35,760,800
Market Cap $32.5B
Description
Comfort Systems USA, Inc. provides mechanical and electrical installation, renovation, maintenance, repair, and replacement services for the mechanical and electrical services industry in the United States. It engages in the design, engineering, integration, installation, and start-up of mechanical, electrical, and plumbing (MEP) systems; and re...

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