Citadel Advisors
FIX icon

Citadel Advisors’s Comfort Systems FIX Stock Holding History

Citadel Advisors’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 		$163M Buy
118,500
+89,500
+309% +$114M 0.03% 547
2025
Q4 		$27.1M Sell
29,000
-8,700
-23% -$8.03M ﹤0.01% 2023
2025
Q3 		$31.1M Sell
37,700
-4,100
-10% -$2.78M ﹤0.01% 1838
2025
Q2 		$22.4M Sell
41,800
-5,600
-12% -$2.44M ﹤0.01% 2007
2025
Q1 		$15.3M Buy
47,400
+18,300
+63% +$7.38M ﹤0.01% 2337
2024
Q4 		$12.3M Sell
29,100
-11,100
-28% -$4.87M ﹤0.01% 2712
2024
Q3 		$15.7M Buy
40,200
+4,600
+13% +$1.52M ﹤0.01% 2324
2024
Q2 		$10.8M Buy
35,600
+9,900
+39% +$3.15M ﹤0.01% 2678
2024
Q1 		$8.17M Buy
25,700
+3,600
+16% +$920K ﹤0.01% 3201
2023
Q4 		$4.55M Sell
22,100
-4,400
-17% -$813K ﹤0.01% 3935
2023
Q3 		$4.52M Buy
26,500
+1,600
+6% +$281K ﹤0.01% 3823
2023
Q2 		$4.09M Buy
24,900
+10,300
+71% +$1.53M ﹤0.01% 3952
2023
Q1 		$2.13M Buy
14,600
+1,900
+15% +$246K ﹤0.01% 5236
2022
Q4 		$1.46M Sell
12,700
-1,500
-11% -$174K ﹤0.01% 6082
2022
Q3 		$1.38M Buy
14,200
+2,400
+20% +$235K ﹤0.01% 6315
2022
Q2 		$981K Sell
11,800
-2,300
-16% -$198K ﹤0.01% 7059
2022
Q1 		$1.25M Sell
14,100
-5,400
-28% -$485K ﹤0.01% 7184
2021
Q4 		$1.93M Buy
19,500
+15,100
+343% +$1.4M ﹤0.01% 6328
2021
Q3 		$314K Sell
4,400
-4,500
-51% -$335K ﹤0.01% 10973
2021
Q2 		$701K Sell
8,900
-8,800
-50% -$717K ﹤0.01% 9241
2021
Q1 		$1.32M Buy
17,700
+9,500
+116% +$607K ﹤0.01% 7412
2020
Q4 		$432K Sell
8,200
-2,700
-25% -$140K ﹤0.01% 8408
2020
Q3 		$561K Buy
10,900
+5,000
+85% +$243K ﹤0.01% 7090
2020
Q2 		$240K Sell
5,900
-2,900
-33% -$103K ﹤0.01% 8266
2020
Q1 		$322K Sell
8,800
-7,600
-46% -$337K ﹤0.01% 7203
2019
Q4 		$818K Buy
16,400
+8,200
+100% +$399K ﹤0.01% 5961
2019
Q3 		$363K Buy
+8,200
New +$358K ﹤0.01% 7275
2019
Q2 		– Sell
-4,800
Closed -$251K – 9374
2019
Q1 		$251K Buy
+4,800
New +$239K ﹤0.01% 7872
2017
Q3 		– Sell
-6,400
Closed -$237K – 7669
2017
Q2 		$237K Sell
6,400
-600
-9% -$21.3K ﹤0.01% 6293
2017
Q1 		$257K Buy
7,000
+500
+8% +$17.4K ﹤0.01% 6110
2016
Q4 		$216K Buy
+6,500
New +$202K ﹤0.01% 6196
2016
Q3 		– Sell
-13,300
Closed -$433K – 7372
2016
Q2 		$433K Buy
13,300
+3,200
+32% +$102K ﹤0.01% 4692
2016
Q1 		$321K Buy
10,100
+200
+2% +$5.66K ﹤0.01% 5016
2015
Q4 		$281K Buy
9,900
+3,200
+48% +$97.4K ﹤0.01% 5312
2015
Q3 		$183K Buy
6,700
+2,200
+49% +$58.9K ﹤0.01% 6262
2015
Q2 		$103K Buy
4,500
+3,900
+650% +$85.7K ﹤0.01% 7039
2015
Q1 		$13K Buy
+600
New +$10.7K ﹤0.01% 8121
2014
Q3 		– Sell
-800
Closed -$13K – 8199
2014
Q2 		$13K Sell
800
-900
-53% -$14.1K ﹤0.01% 7487
2014
Q1 		$26K Buy
+1,700
New +$29K ﹤0.01% 7163

Other funds holding FIX

BlackRock
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
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return

Citadel Advisors's FIX Position: Q1 2026 in Review

Citadel Advisors increased its Comfort Systems (FIX) stake by 166% in Q1 2026, buying an estimated $19.2M and bringing the position to 24,295 shares worth $33.5M. The position accounts for 0.01% of the portfolio, ranked #1741.

Citadel Advisors first reported a position in FIX in Q2 2013 and has held it in 51 quarters since. The position peaked at $62.4M in Q1 2025. 1,195 funds tracked by Wall St. Rank hold FIX as of Q1 2026.

  • Citadel Advisors held 24,295 shares of Comfort Systems worth $33.5M as of Q1 2026.
  • Citadel Advisors bought 15,156 Comfort Systems shares in Q1 2026, an estimated $19.2M.
  • Comfort Systems made up 0.01% of Citadel Advisors's portfolio in Q1 2026, its #1741 holding.
  • Citadel Advisors first reported a position in Comfort Systems in Q2 2013 and has held it in 51 quarters since.
  • Citadel Advisors's Comfort Systems position peaked at $62.4M in Q1 2025.
  • 1,195 funds tracked by Wall St. Rank held Comfort Systems as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.