Citadel Advisors
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Citadel Advisors’s MACOM Technology Solutions MTSI Stock Holding History

Citadel Advisors’s Portfolio MTSI Stock Details MTSI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$10.6M Buy
47,800
+25,100
+111% +$5.6M ﹤0.01% 3166
2025
Q4 		$3.89M Sell
22,700
-37,000
-62% -$5.87M ﹤0.01% 4711
2025
Q3 		$7.43M Buy
59,700
+16,100
+37% +$2.12M ﹤0.01% 3694
2025
Q2 		$6.25M Sell
43,600
-84,000
-66% -$9.81M ﹤0.01% 3742
2025
Q1 		$12.8M Buy
127,600
+50,200
+65% +$6.11M ﹤0.01% 2542
2024
Q4 		$10.1M Buy
77,400
+30,900
+66% +$3.89M ﹤0.01% 2979
2024
Q3 		$5.17M Buy
46,500
+13,700
+42% +$1.44M ﹤0.01% 3884
2024
Q2 		$3.66M Buy
32,800
+7,000
+27% +$714K ﹤0.01% 4257
2024
Q1 		$2.47M Buy
25,800
+5,700
+28% +$504K ﹤0.01% 5115
2023
Q4 		$1.87M Sell
20,100
-5,600
-22% -$460K ﹤0.01% 5480
2023
Q3 		$2.1M Buy
25,700
+5,900
+30% +$436K ﹤0.01% 5122
2023
Q2 		$1.3M Buy
19,800
+600
+3% +$36.3K ﹤0.01% 5936
2023
Q1 		$1.36M Buy
19,200
+10,800
+129% +$730K ﹤0.01% 6119
2022
Q4 		$529K Sell
8,400
-2,900
-26% -$181K ﹤0.01% 8122
2022
Q3 		$585K Sell
11,300
-2,100
-16% -$115K ﹤0.01% 8122
2022
Q2 		$618K Sell
13,400
-21,000
-61% -$1.08M ﹤0.01% 8173
2022
Q1 		$2.06M Sell
34,400
-30,800
-47% -$1.93M ﹤0.01% 6025
2021
Q4 		$5.11M Buy
65,200
+53,400
+453% +$3.85M ﹤0.01% 4257
2021
Q3 		$765K Sell
11,800
-11,100
-48% -$682K ﹤0.01% 8831
2021
Q2 		$1.47M Sell
22,900
-41,000
-64% -$2.38M ﹤0.01% 7364
2021
Q1 		$3.71M Sell
63,900
-5,100
-7% -$316K ﹤0.01% 4945
2020
Q4 		$3.8M Buy
69,000
+37,400
+118% +$1.6M ﹤0.01% 4163
2020
Q3 		$1.07M Sell
31,600
-44,800
-59% -$1.63M ﹤0.01% 5907
2020
Q2 		$2.62M Buy
76,400
+47,300
+163% +$1.38M ﹤0.01% 4095
2020
Q1 		$551K Sell
29,100
-9,900
-25% -$252K ﹤0.01% 6311
2019
Q4 		$1.04M Sell
39,000
-22,000
-36% -$525K ﹤0.01% 5513
2019
Q3 		$1.31M Buy
61,000
+11,900
+24% +$232K ﹤0.01% 5144
2019
Q2 		$743K Sell
49,100
-3,300
-6% -$49.7K ﹤0.01% 6191
2019
Q1 		$876K Sell
52,400
-35,100
-40% -$612K ﹤0.01% 5825
2018
Q4 		$1.27M Buy
87,500
+50,100
+134% +$808K ﹤0.01% 4928
2018
Q3 		$770K Sell
37,400
-9,900
-21% -$222K ﹤0.01% 5982
2018
Q2 		$1.09M Sell
47,300
-10,200
-18% -$217K ﹤0.01% 5062
2018
Q1 		$955K Buy
57,500
+45,200
+367% +$1.17M ﹤0.01% 4880
2017
Q4 		$400K Sell
12,300
-4,900
-28% -$177K ﹤0.01% 5995
2017
Q3 		$767K Buy
17,200
+3,200
+23% +$156K ﹤0.01% 4693
2017
Q2 		$781K Buy
14,000
+2,400
+21% +$129K ﹤0.01% 4468
2017
Q1 		$560K Hold
11,600
– – ﹤0.01% 4823
2016
Q4 		$537K Buy
11,600
+3,500
+43% +$153K ﹤0.01% 4785
2016
Q3 		$343K Sell
8,100
-1,100
-12% -$43.1K ﹤0.01% 5438
2016
Q2 		$303K Sell
9,200
-7,600
-45% -$288K ﹤0.01% 5206
2016
Q1 		$736K Buy
16,800
+12,100
+257% +$474K ﹤0.01% 3864
2015
Q4 		$192K Buy
+4,700
New +$164K ﹤0.01% 5855
2015
Q3 		– Sell
-4,200
Closed -$161K – 9110
2015
Q2 		$161K Buy
+4,200
New +$155K ﹤0.01% 6586

Other funds holding MTSI

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Citadel Advisors's MTSI Position: Q1 2026 in Review

Citadel Advisors increased its MACOM Technology Solutions (MTSI) stake by 344% in Q1 2026, buying an estimated $102M and bringing the position to 590,570 shares worth $131M. The position accounts for 0.02% of the portfolio, ranked #649.

Citadel Advisors first reported a position in MTSI in Q3 2013 and has held it in 41 quarters since. The position peaked at $199M in Q2 2025. 512 funds tracked by Wall St. Rank hold MTSI as of Q1 2026.

  • Citadel Advisors held 590,570 shares of MACOM Technology Solutions worth $131M as of Q1 2026.
  • Citadel Advisors bought 457,447 MACOM Technology Solutions shares in Q1 2026, an estimated $102M.
  • MACOM Technology Solutions made up 0.02% of Citadel Advisors's portfolio in Q1 2026, its #649 holding.
  • Citadel Advisors first reported a position in MACOM Technology Solutions in Q3 2013 and has held it in 41 quarters since.
  • Citadel Advisors's MACOM Technology Solutions position peaked at $199M in Q2 2025.
  • 512 funds tracked by Wall St. Rank held MACOM Technology Solutions as of Q1 2026.

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