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Ion Asset Management’s Illumina ILMN Stock Holding History

Ion Asset Management’s Portfolio ILMN Stock Details ILMN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		$37.4M Sell
394,000
-356,921
-48% -$35.4M 4.11% 9
2025
Q2 		$71.6M Buy
750,921
+17,192
+2% +$1.4M 3.94% 8
2025
Q1 		$58.2M Sell
733,729
-66,771
-8% -$7.23M 3.77% 6
2024
Q4 		$107M Buy
800,500
+79,001
+11% +$11.3M 6.23% 4
2024
Q3 		$94.1M Buy
721,499
+522,499
+263% +$64.5M 5.07% 4
2024
Q2 		$20.8M Buy
+199,000
New +$22.3M 1.16% 16

Other funds holding ILMN

Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
SC
Sessa Capital New York $5.51B AUM 47.23% 1-Year Est. Return
Loomis, Sayles & Company
Loomis, Sayles & Company Boston, Massachusetts $74.3B AUM 24.01% 1-Year Est. Return
WCM Investment Management
WCM Investment Management Laguna Beach, California $43.8B AUM 42.28% 1-Year Est. Return
CM
Corvex Management New York $2.52B AUM 25.53% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Ion Asset Management's ILMN Position: Q3 2025 in Review

Ion Asset Management reduced its Illumina (ILMN) stake by 48% in Q3 2025, selling an estimated $35.4M and leaving 394,000 shares worth $37.4M. The position accounts for 4.11% of the portfolio, ranked #9.

Ion Asset Management first reported a position in ILMN in Q2 2024 and has held it in 6 quarters since. The position peaked at $107M in Q4 2024. 775 funds tracked by Wall St. Rank hold ILMN as of Q3 2025.

  • Ion Asset Management held 394,000 shares of Illumina worth $37.4M as of Q3 2025.
  • Ion Asset Management sold 356,921 Illumina shares in Q3 2025, an estimated $35.4M.
  • Illumina made up 4.11% of Ion Asset Management's portfolio in Q3 2025, its #9 holding.
  • Ion Asset Management first reported a position in Illumina in Q2 2024 and has held it in 6 quarters since.
  • Ion Asset Management's Illumina position peaked at $107M in Q4 2024.
  • 775 funds tracked by Wall St. Rank held Illumina as of Q3 2025.

Based on Ion Asset Management's 13F filing for Q3 2025, filed 14 Nov 2025.