Ticker · CUSIP 199908104

FIX

COMFORT SYS USA INC

Industrials·Engineering & Construction

···Share

Holders (tracked)

Combined shares

2,721,816

Combined value

$2.54B

Last close

$1650.47

Quarter

2025Q4

Price is +76.8% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$1650+1303.50 (+375.68%)H $1650 · L $327.25 · Avg Vol 446K

Congress buy

Tracked holders · last 8 quarters

+4 vs previous quarter over the last 8.

SEC event timeline

29 events

Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+7,500 shares · 2025Q4
Position
Daniel Loeb (Third Point) trimmed2026-02-17
−95,000 shares · 2025Q4
Position
Ken Griffin (Citadel Advisors) trimmed2026-02-17
−60,065 shares · 2025Q4
Position
D.E. Shaw & Co. trimmed2026-02-17
−103,093 shares · 2025Q4
Position
Steve Cohen (Point72) added2026-02-17
+111,970 shares · 2025Q4
Position
T. Rowe Price trimmed2026-02-17
−23,216 shares · 2025Q4
Position
Wellington Management trimmed2026-02-17
−2,723 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+184,362 shares · 2025Q4
Position
Two Sigma Investments trimmed2026-02-17
−27 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−296,341 shares · 2025Q4
Position
Ray Dalio (Bridgewater Associates) added2026-02-13
+16,116 shares · 2025Q4
Position
Renaissance Technologies added2026-02-12
+3,580 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+503,173 shares · 2025Q4
Position
Ken Fisher (Fisher Asset Mgmt) trimmed2026-02-09
−118 shares · 2025Q4
Position
Baillie Gifford & Co trimmed2026-01-23
−138,042 shares · 2025Q4
Position
Daniel Loeb (Third Point) added2025-11-14
+15,000 shares · 2025Q3
Position
Steve Cohen (Point72) opened position2025-11-14
+34,884 shares · 2025Q3
Position
Two Sigma Investments trimmed2025-11-14
−14,316 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) added2025-11-14
+203,136 shares · 2025Q3
Position
D.E. Shaw & Co. trimmed2025-11-14
−7,408 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+10,839 shares · 2025Q3
Position
Wellington Management trimmed2025-11-14
−31,099 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+53,125 shares · 2025Q3
Position
Ray Dalio (Bridgewater Associates) added2025-11-13
+39,837 shares · 2025Q3
Position
Renaissance Technologies trimmed2025-11-13
−79,900 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−479,287 shares · 2025Q3
Position
Ken Fisher (Fisher Asset Mgmt) opened position2025-11-12
+383 shares · 2025Q3
Position
Norges Bank (Norway SWF) added2025-11-12
+3,098 shares · 2024Q3
Position
Baillie Gifford & Co trimmed2025-10-31
−19,758 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for FIX →

Follow-the-investor returns

If you'd copied each holder of FIX…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Ken Fisher (Fisher Asset Mgmt)	2016Q1	$65.18	+2432.3%	$437K
Wellington Management	2016Q1	$128.65	+1182.9%	$35.7M
Norges Bank (Norway SWF)	2016Q1	$169.15	+875.8%	$830.5M
Baillie Gifford & Co	2023Q3	$170.41	+868.5%	$453.5M
T. Rowe Price	2016Q1	$199.85	+725.8%	$293.1M
Tom Gayner (Markel Group)	2023Q4	$309.09	+434.0%	$21.5M
Two Sigma Investments	2016Q1	$317.84	+419.3%	$5.9M
Renaissance Technologies	2016Q1	$362.75	+355.0%	$89.1M
AQR Capital Management	2016Q1	$509.77	+223.8%	$1.68B
Daniel Loeb (Third Point)	2025Q2	$557.88	+195.8%	$173.3M
Ray Dalio (Bridgewater Associates)	2023Q3	$771.45	+113.9%	$112.6M
Steve Cohen (Point72)	2019Q2	$849.68	+94.2%	$24.3M
Steve Cohen (Point72)	2019Q2	$849.68	+94.2%	$24.3M
Steve Cohen (Point72)	2019Q2	$849.68	+94.2%	$24.3M
Paul Tudor Jones (Tudor Investment)	2016Q1	$880.38	+87.5%	$4.8M
Paul Tudor Jones (Tudor Investment)	2016Q1	$880.38	+87.5%	$4.8M
Ken Griffin (Citadel Advisors)	2016Q1	$880.44	+87.5%	$95.2M
Ken Griffin (Citadel Advisors)	2016Q1	$880.44	+87.5%	$95.2M
Ken Griffin (Citadel Advisors)	2016Q1	$880.44	+87.5%	$95.2M
D.E. Shaw & Co.	2016Q1	$924.73	+78.5%	$42.3M
D.E. Shaw & Co.	2016Q1	$924.73	+78.5%	$42.3M
D.E. Shaw & Co.	2016Q1	$924.73	+78.5%	$42.3M
Izzy Englander (Millennium Mgmt)	2016Q1	$932.41	+77.0%	$1.7M
Izzy Englander (Millennium Mgmt)	2016Q1	$932.41	+77.0%	$1.7M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions2

Norges Bank (Norway SWF)
+503,173
$469.6M
Paul Tudor Jones (Tudor Investment)
+7,500
$7.0M

Added to4

AQR Capital Management
+184,362
$172.1M
Steve Cohen (Point72)
+111,970
$104.5M
Ray Dalio (Bridgewater Associates)
+16,116
$15.0M
Renaissance Technologies
+3,580
$3.3M

Trimmed9

Izzy Englander (Millennium Mgmt)
−296,341
$276.6M
Baillie Gifford & Co
−138,042
$128.8M
D.E. Shaw & Co.
−103,093
$96.2M
Daniel Loeb (Third Point)
−95,000
$88.7M
Ken Griffin (Citadel Advisors)
−60,065
$56.1M
Wellington Management
−2,723
$2.5M
Ken Fisher (Fisher Asset Mgmt)
−118
$110K
Two Sigma Investments
−27
$25K
T. Rowe Price
−23,216
$22K

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	11	6,592,932	$31.18B	—
2022Q2	10	6,558,635	$26.06B	-1
2022Q3	13	6,929,642	$674.5M	+3
2022Q4	13	7,600,611	$874.7M	—
2023Q1	14	7,932,444	$1.16B	+1
2023Q2	14	7,764,632	$1.27B	—
2023Q3	16	8,358,055	$1.42B	+2
2023Q4	13	7,277,548	$1.50B	-3
2024Q1	14	7,024,860	$2.23B	+1
2024Q2	19	7,440,516	$2.26B	+5
2024Q3	18	2,533,788	$988.6M	-1
2024Q4	18	2,041,767	$865.8M	—
2025Q1	18	2,460,443	$787.3M	—
2025Q2	19	2,793,223	$1.50B	+1
2025Q3	20	2,571,040	$2.11B	+1
2025Q4	24	2,721,816	$2.54B	+4

Congress members trading this stock

Date	Member	Type	Amount range	Filing
2025-12-04	Byron Donalds	Buy	$1K – $15K	PDF ↗
2025-12-04	Byron Donalds	Buy	$1K – $15K	PDF ↗
2025-01-13	Rob Bresnahan	Sell	$1K – $15K	PDF ↗

Who owns FIX

24 super-investors · 2025Q4

Tracked stake

2.72M

Combined value

$2.54B

% of shares outstanding

—

shares-out unknown

Quarter action mix

New3Added6Trim14Held1

#	Manager	Shares	Value	% of book	Last action
1	AQR Capital Management	1.02M	$952M	0.5%	Added+184.4K
2	Norges Bank Norway SWF	503.2K	$470M	0.1%	New+503.2K
3	Baillie Gifford & Co	274.7K	$256M	0.2%	Trim−138.0K
4	T. Rowe Price	177.6K	$166M	0.0%	Trim−23.2K
5	Steve Cohen Point72	146.9K	$137M	0.2%	Added+112.0K
6	Daniel Loeb Third Point	105.0K	$98M	1.3%	Trim−95.0K
7	D.E. Shaw & Co.	84.5K	$79M	0.0%	Trim−103.1K
8	Ray Dalio Bridgewater Associates	68.2K	$64M	0.2%	Added+16.1K
9	Izzy Englander Millennium Mgmt	62.3K	$58M	0.0%	Trim−296.3K
10	Ken Griffin Citadel Advisors	57.7K	$54M	0.0%	Trim−60.1K
11	Renaissance Technologies	54.0K	$50M	0.1%	Added+3.6K
12	Ken Griffin Citadel Advisors	29.0K	$27M	0.0%	Trim−60.1K
13	Steve Cohen Point72	28.2K	$26M	0.0%	Added+112.0K
14	D.E. Shaw & Co.	25.6K	$24M	0.0%	Trim−103.1K
15	Wellington Management	21.6K	$20M	0.0%	Trim−2.7K
16	Steve Cohen Point72	14.7K	$14M	0.0%	Added+112.0K
17	D.E. Shaw & Co.	14.2K	$13M	0.0%	Trim−103.1K
18	Tom Gayner Markel Group	13.0K	$12M	0.1%	Held
19	Ken Griffin Citadel Advisors	9.1K	$9M	0.0%	Trim−60.1K
20	Paul Tudor Jones Tudor Investment	4.6K	$4M	0.0%	New+7.5K
21	Two Sigma Investments	3.6K	$3M	0.0%	Trim−27
22	Paul Tudor Jones Tudor Investment	2.9K	$3M	0.0%	New+7.5K
23	Izzy Englander Millennium Mgmt	1.0K	$933K	0.0%	Trim−296.3K
24	Ken Fisher Fisher Asset Mgmt	265	$248K	0.0%	Trim−118

Recent moves

20 transactions

TRIMT. Rowe Price
−23,216 · 2025Q4
TRIMWellington Management
−2,723 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−296,341 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+7,500 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−60,065 · 2025Q4
TRIMTwo Sigma Investments
−27 · 2025Q4
TRIMD.E. Shaw & Co.
−103,093 · 2025Q4
TRIMDaniel Loeb (Third Point)
−95,000 · 2025Q4
ADDSteve Cohen (Point72)
+111,970 · 2025Q4
ADDAQR Capital Management
+184,362 · 2025Q4
ADDRay Dalio (Bridgewater Associates)
+16,116 · 2025Q4
ADDRenaissance Technologies
+3,580 · 2025Q4
NEWNorges Bank (Norway SWF)
+503,173 · 2025Q4
TRIMKen Fisher (Fisher Asset Mgmt)
−118 · 2025Q4
TRIMBaillie Gifford & Co
−138,042 · 2025Q4
NEWSteve Cohen (Point72)
+34,884 · 2025Q3
ADDDaniel Loeb (Third Point)
+15,000 · 2025Q3
ADDIzzy Englander (Millennium Mgmt)
+203,136 · 2025Q3
TRIMTwo Sigma Investments
−14,316 · 2025Q3
TRIMD.E. Shaw & Co.
−7,408 · 2025Q3

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