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S.A. Mason’s Illumina ILMN Stock Holding History

S.A. Mason’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 		– Sell
-1,050
Closed -$100K – 304
2025
Q2 		$100K Sell
1,050
-75
-7% -$6.09K 0.05% 242
2025
Q1 		$89.3K Hold
1,125
– – 0.05% 239
2024
Q4 		$150K Sell
1,125
-125
-10% -$17.8K 0.08% 192
2024
Q3 		$163K Hold
1,250
– – 0.09% 179
2024
Q2 		$130K Sell
1,250
-35
-3% -$3.93K 0.07% 190
2024
Q1 		$172K Sell
1,285
-535
-29% -$71.7K 0.1% 165
2023
Q4 		$246K Sell
1,820
-154
-8% -$17.8K 0.17% 139
2023
Q3 		$264K Sell
1,974
-51
-3% -$8.38K 0.19% 129
2023
Q2 		$458K Hold
2,025
– – 0.33% 88
2023
Q1 		$458K Sell
2,025
-129
-6% -$26.4K 0.33% 88
2022
Q4 		$424K Sell
2,154
-514
-19% -$107K 0.32% 86
2022
Q3 		$495K Sell
2,668
-308
-10% -$60.9K 0.39% 73
2022
Q2 		$534K Sell
2,976
-154
-5% -$39.3K 0.39% 69
2022
Q1 		$1.06M Sell
3,130
-26
-0.8% -$8.78K 0.66% 38
2021
Q4 		$1.17M Hold
3,156
– – 0.7% 34
2021
Q3 		$1.25M Hold
3,156
– – 0.82% 29
2021
Q2 		$1.45M Hold
3,156
– – 1% 18
2021
Q1 		$1.18M Hold
3,156
– – 0.88% 30
2020
Q4 		$1.14M Buy
3,156
+21
+0.7% +$6.69K 0.95% 26
2020
Q3 		$943K Buy
+3,135
New +$1.08M 0.9% 30

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

S.A. Mason's ILMN Position: Q3 2025 in Review

S.A. Mason sold out of Illumina (ILMN) in Q3 2025, closing a stake of 1,050 shares — an estimated $100K sold.

S.A. Mason first reported a position in ILMN in Q3 2020 and held it in 20 quarters. The position peaked at $1.45M in Q2 2021. 775 funds tracked by Wall St. Rank hold ILMN as of Q3 2025.

  • S.A. Mason reported no remaining Illumina position as of Q3 2025 after selling out during the quarter.
  • S.A. Mason sold 1,050 Illumina shares in Q3 2025, an estimated $100K.
  • S.A. Mason first reported a position in Illumina in Q3 2020 and held it in 20 quarters.
  • S.A. Mason's Illumina position peaked at $1.45M in Q2 2021.
  • 775 funds tracked by Wall St. Rank held Illumina as of Q3 2025.

Based on S.A. Mason's 13F filing for Q3 2025, filed 14 Oct 2025.