William Blair Investment Management
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William Blair Investment Management’s Illumina ILMN Stock Holding History

William Blair Investment 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
2021
Q3 		– Sell
-949
Closed -$437K – 472
2021
Q2 		$437K Sell
949
-98,973
-99% -$39.9M ﹤0.01% 362
2021
Q1 		$37.3M Buy
99,922
+409
+0.4% +$167K 0.12% 165
2020
Q4 		$35.8M Sell
99,513
-54,906
-36% -$17.5M 0.12% 156
2020
Q3 		$46.4M Sell
154,419
-58,377
-27% -$20.1M 0.18% 127
2020
Q2 		$76.7M Buy
212,796
+116,616
+121% +$37.5M 0.31% 104
2020
Q1 		$25.6M Buy
96,180
+24,444
+34% +$6.84M 0.12% 157
2019
Q4 		$23.1M Buy
71,736
+1,645
+2% +$499K 0.09% 184
2019
Q3 		$20.7M Buy
70,091
+339
+0.5% +$99.9K 0.09% 190
2019
Q2 		$25M Buy
69,752
+738
+1% +$233K 0.1% 168
2019
Q1 		$20.9M Buy
69,014
+21,085
+44% +$6.15M 0.09% 198
2018
Q4 		$14M Buy
47,929
+196
+0.4% +$60.7K 0.07% 251
2018
Q3 		$17M Buy
+47,733
New +$15.3M 0.06% 272
2016
Q4 		– Sell
-6,954
Closed -$1.23M – 444
2016
Q3 		$1.23M Hold
6,954
– – ﹤0.01% 394
2016
Q2 		$950K Hold
6,954
– – ﹤0.01% 399
2016
Q1 		$1.1M Hold
6,954
– – ﹤0.01% 394
2015
Q4 		$1.3M Hold
6,954
– – 0.01% 391
2015
Q3 		$1.19M Buy
+6,954
New +$1.41M ﹤0.01% 950

Other funds holding ILMN

Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Edgewood Management
Edgewood Management Greenwich, Connecticut $15.5B AUM 9.67% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Loomis, Sayles & Company
Loomis, Sayles & Company Boston, Massachusetts $74.3B AUM 24.01% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Polen Capital Management
Polen Capital Management Boca Raton, Florida $14.5B AUM 5.7% 1-Year Est. Return

William Blair Investment Management's ILMN Position: Q3 2021 in Review

William Blair Investment Management sold out of Illumina (ILMN) in Q3 2021, closing a stake of 949 shares — an estimated $437K sold.

William Blair Investment Management first reported a position in ILMN in Q3 2015 and held it in 17 quarters. The position peaked at $76.7M in Q2 2020. 1,072 funds tracked by Wall St. Rank hold ILMN as of Q3 2021.

  • William Blair Investment Management reported no remaining Illumina position as of Q3 2021 after selling out during the quarter.
  • William Blair Investment Management sold 949 Illumina shares in Q3 2021, an estimated $437K.
  • William Blair Investment Management first reported a position in Illumina in Q3 2015 and held it in 17 quarters.
  • William Blair Investment Management's Illumina position peaked at $76.7M in Q2 2020.
  • 1,072 funds tracked by Wall St. Rank held Illumina as of Q3 2021.

Based on William Blair Investment Management's 13F filing for Q3 2021, filed 10 Nov 2021.