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Robeco Schweiz’s Alpha and Omega Semiconductor AOSL Stock Holding History

Robeco Schweiz’s Portfolio AOSL Stock Details AOSL Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-785,264
Closed -$22M – 130
2025
Q3 		$22M Buy
785,264
+2,761
+0.4% +$76.6K 0.49% 59
2025
Q2 		$20.1M Buy
782,503
+751
+0.1% +$16.3K 0.46% 61
2025
Q1 		$19.4M Buy
+781,752
New +$26.2M 0.48% 65

Other funds holding AOSL

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
Manulife (Manufacturers Life Insurance)
Manulife (Manufacturers Life Insurance) Canada, Ontario, Canada $128B AUM 35.83% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
WCM
Weber Capital Management San Francisco, California $118M AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Robeco Schweiz's AOSL Position: Q4 2025 in Review

Robeco Schweiz sold out of Alpha and Omega Semiconductor (AOSL) in Q4 2025, closing a stake of 785,264 shares — an estimated $22M sold.

Robeco Schweiz first reported a position in AOSL in Q1 2025 and held it in 3 quarters. The position peaked at $22M in Q3 2025. 168 funds tracked by Wall St. Rank hold AOSL as of Q4 2025.

  • Robeco Schweiz reported no remaining Alpha and Omega Semiconductor position as of Q4 2025 after selling out during the quarter.
  • Robeco Schweiz sold 785,264 Alpha and Omega Semiconductor shares in Q4 2025, an estimated $22M.
  • Robeco Schweiz first reported a position in Alpha and Omega Semiconductor in Q1 2025 and held it in 3 quarters.
  • Robeco Schweiz's Alpha and Omega Semiconductor position peaked at $22M in Q3 2025.
  • 168 funds tracked by Wall St. Rank held Alpha and Omega Semiconductor as of Q4 2025.

Based on Robeco Schweiz's 13F filing for Q4 2025, filed 3 Feb 2026.