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 		$3.44M Buy
15,500
+8,900
+135% +$1.99M ﹤0.01% 4990
2025
Q4 		$1.13M Sell
6,600
-7,800
-54% -$1.24M ﹤0.01% 7120
2025
Q3 		$1.79M Sell
14,400
-3,700
-20% -$488K ﹤0.01% 6299
2025
Q2 		$2.59M Sell
18,100
-67,800
-79% -$7.92M ﹤0.01% 5228
2025
Q1 		$8.62M Buy
85,900
+61,700
+255% +$7.51M ﹤0.01% 3053
2024
Q4 		$3.14M Buy
24,200
+6,700
+38% +$843K ﹤0.01% 4760
2024
Q3 		$1.95M Buy
17,500
+14,800
+548% +$1.55M ﹤0.01% 5590
2024
Q2 		$301K Sell
2,700
-47,600
-95% -$4.85M ﹤0.01% 9129
2024
Q1 		$4.81M Buy
50,300
+20,500
+69% +$1.81M ﹤0.01% 4008
2023
Q4 		$2.77M Buy
29,800
+19,400
+187% +$1.6M ﹤0.01% 4787
2023
Q3 		$848K Sell
10,400
-3,600
-26% -$266K ﹤0.01% 6917
2023
Q2 		$917K Buy
14,000
+10,100
+259% +$612K ﹤0.01% 6642
2023
Q1 		$276K Sell
3,900
-1,600
-29% -$108K ﹤0.01% 9543
2022
Q4 		$346K Sell
5,500
-13,800
-72% -$862K ﹤0.01% 9002
2022
Q3 		$1M Buy
19,300
+6,600
+52% +$361K ﹤0.01% 6990
2022
Q2 		$585K Sell
12,700
-9,500
-43% -$490K ﹤0.01% 8291
2022
Q1 		$1.33M Sell
22,200
-39,900
-64% -$2.49M ﹤0.01% 7035
2021
Q4 		$4.86M Buy
62,100
+39,300
+172% +$2.83M ﹤0.01% 4338
2021
Q3 		$1.48M Buy
22,800
+2,300
+11% +$141K ﹤0.01% 7111
2021
Q2 		$1.31M Sell
20,500
-6,900
-25% -$400K ﹤0.01% 7637
2021
Q1 		$1.59M Buy
27,400
+9,800
+56% +$607K ﹤0.01% 6958
2020
Q4 		$969K Buy
17,600
+4,900
+39% +$209K ﹤0.01% 6862
2020
Q3 		$432K Buy
+12,700
New +$461K ﹤0.01% 7538
2020
Q2 		– Sell
-13,000
Closed -$246K – 10249
2020
Q1 		$246K Sell
13,000
-18,500
-59% -$470K ﹤0.01% 7656
2019
Q4 		$838K Sell
31,500
-26,800
-46% -$640K ﹤0.01% 5919
2019
Q3 		$1.25M Buy
58,300
+42,100
+260% +$822K ﹤0.01% 5210
2019
Q2 		$245K Sell
16,200
-4,600
-22% -$69.3K ﹤0.01% 7901
2019
Q1 		$348K Sell
20,800
-20,900
-50% -$364K ﹤0.01% 7390
2018
Q4 		$605K Sell
41,700
-11,100
-21% -$179K ﹤0.01% 6115
2018
Q3 		$1.09M Buy
52,800
+26,200
+98% +$587K ﹤0.01% 5395
2018
Q2 		$613K Buy
26,600
+4,600
+21% +$97.8K ﹤0.01% 6043
2018
Q1 		$365K Buy
22,000
+5,600
+34% +$144K ﹤0.01% 6421
2017
Q4 		$534K Buy
16,400
+6,800
+71% +$246K ﹤0.01% 5547
2017
Q3 		$428K Sell
9,600
-4,400
-31% -$215K ﹤0.01% 5548
2017
Q2 		$781K Buy
14,000
+6,400
+84% +$345K ﹤0.01% 4469
2017
Q1 		$367K Buy
7,600
+500
+7% +$23.4K ﹤0.01% 5559
2016
Q4 		$329K Buy
+7,100
New +$310K ﹤0.01% 5552
2016
Q1 		– Sell
-100
Closed -$4K – 7546
2015
Q4 		$4K Buy
+100
New +$3.48K ﹤0.01% 8491
2015
Q3 		– Sell
-2,100
Closed -$80K – 9112
2015
Q2 		$80K Buy
+2,100
New +$77.5K ﹤0.01% 7305

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.