MF
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Magnetar Financial’s MACOM Technology Solutions MTSI Stock Holding History

Magnetar Financial’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
2025
Q4 		– Sell
-9,945
Closed -$1.24M – 1126
2025
Q3 		$1.24M Buy
+9,945
New +$1.31M 0.01% 438
2025
Q2 		– Sell
-48,709
Closed -$4.89M – 1046
2025
Q1 		$4.89M Buy
+48,709
New +$5.93M 0.06% 182
2021
Q3 		– Sell
-3,504
Closed -$225K – 1447
2021
Q2 		$225K Buy
+3,504
New +$203K ﹤0.01% 1085

Other funds holding MTSI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return

Magnetar Financial's MTSI Position: Q4 2025 in Review

Magnetar Financial sold out of MACOM Technology Solutions (MTSI) in Q4 2025, closing a stake of 9,945 shares — an estimated $1.24M sold.

Magnetar Financial first reported a position in MTSI in Q2 2021 and held it in 3 quarters. The position peaked at $4.89M in Q1 2025. 460 funds tracked by Wall St. Rank hold MTSI as of Q4 2025.

  • Magnetar Financial reported no remaining MACOM Technology Solutions position as of Q4 2025 after selling out during the quarter.
  • Magnetar Financial sold 9,945 MACOM Technology Solutions shares in Q4 2025, an estimated $1.24M.
  • Magnetar Financial first reported a position in MACOM Technology Solutions in Q2 2021 and held it in 3 quarters.
  • Magnetar Financial's MACOM Technology Solutions position peaked at $4.89M in Q1 2025.
  • 460 funds tracked by Wall St. Rank held MACOM Technology Solutions as of Q4 2025.

Based on Magnetar Financial's 13F filing for Q4 2025, filed 17 Feb 2026.