Calamos Advisors
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Calamos Advisors’s Micron Technology MU Stock Holding History

Calamos Advisors’s Portfolio MU Stock Details MU Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2022
Q3 		– Sell
-190,000
Closed -$10.5M – 1318
2022
Q2 		$10.5M Buy
190,000
+107,000
+129% +$7.27M 0.05% 466
2022
Q1 		$6.46M Buy
+83,000
New +$7.08M 0.02% 630
2019
Q2 		– Sell
-156,500
Closed -$6.47M – 767
2019
Q1 		$6.47M Buy
+156,500
New +$6.05M 0.04% 407

Other funds holding MU

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 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
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Calamos Advisors's MU Position: Q1 2026 in Review

Calamos Advisors reduced its Micron Technology (MU) stake by 19% in Q1 2026, selling an estimated $30M and leaving 322,206 shares worth $109M. The position accounts for 0.39% of the portfolio, ranked #42.

Calamos Advisors first reported a position in MU in Q4 2013 and has held it in 50 quarters since. The position peaked at $114M in Q4 2025. 2,990 funds tracked by Wall St. Rank hold MU as of Q1 2026.

  • Calamos Advisors held 322,206 shares of Micron Technology worth $109M as of Q1 2026.
  • Calamos Advisors sold 76,542 Micron Technology shares in Q1 2026, an estimated $30M.
  • Micron Technology made up 0.39% of Calamos Advisors's portfolio in Q1 2026, its #42 holding.
  • Calamos Advisors first reported a position in Micron Technology in Q4 2013 and has held it in 50 quarters since.
  • Calamos Advisors's Micron Technology position peaked at $114M in Q4 2025.
  • 2,990 funds tracked by Wall St. Rank held Micron Technology as of Q1 2026.

Based on Calamos Advisors's 13F filing for Q1 2026, filed 4 May 2026.