William Blair Investment Management
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William Blair Investment Management’s Microsoft MSFT Stock Holding History

William Blair Investment Management’s Portfolio MSFT Stock Details MSFT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.07B Sell
2,896,782
-593,520
-17% -$248M 3.54% 4
2025
Q4 		$1.69B Sell
3,490,302
-346,524
-9% -$174M 4.71% 3
2025
Q3 		$1.99B Sell
3,836,826
-144,895
-4% -$73.9M 5.14% 2
2025
Q2 		$1.98B Sell
3,981,721
-145,482
-4% -$63.2M 5.26% 1
2025
Q1 		$1.55B Sell
4,127,203
-303,951
-7% -$124M 4.35% 1
2024
Q4 		$1.87B Sell
4,431,154
-131,324
-3% -$55.9M 4.56% 1
2024
Q3 		$1.96B Buy
4,562,478
+56,022
+1% +$23.9M 4.84% 1
2024
Q2 		$2.01B Buy
4,506,456
+178,718
+4% +$75.5M 5.28% 1
2024
Q1 		$1.82B Buy
4,327,738
+405,344
+10% +$164M 4.71% 1
2023
Q4 		$1.47B Buy
3,922,394
+119,738
+3% +$42.6M 4.29% 1
2023
Q3 		$1.2B Buy
3,802,656
+314,571
+9% +$104M 3.99% 1
2023
Q2 		$1.19B Buy
3,488,085
+124,931
+4% +$39.2M 3.81% 1
2023
Q1 		$970M Buy
3,363,154
+147,886
+5% +$37.7M 3.38% 2
2022
Q4 		$771M Sell
3,215,268
-6,534
-0.2% -$1.57M 2.95% 1
2022
Q3 		$750M Buy
3,221,802
+12,606
+0.4% +$3.33M 2.97% 1
2022
Q2 		$824M Buy
3,209,196
+525,013
+20% +$142M 3.05% 1
2022
Q1 		$828M Buy
2,684,183
+165,512
+7% +$49.8M 2.47% 2
2021
Q4 		$847M Buy
2,518,671
+636,404
+34% +$206M 2.29% 2
2021
Q3 		$531M Sell
1,882,267
-80,538
-4% -$23.4M 1.5% 2
2021
Q2 		$532M Buy
1,962,805
+36,267
+2% +$9.22M 1.67% 3
2021
Q1 		$454M Buy
1,926,538
+244,392
+15% +$56.7M 1.47% 4
2020
Q4 		$374M Buy
1,682,146
+213,201
+15% +$45.8M 1.25% 11
2020
Q3 		$309M Sell
1,468,945
-25,584
-2% -$5.37M 1.2% 11
2020
Q2 		$304M Buy
1,494,529
+286,751
+24% +$52.1M 1.24% 10
2020
Q1 		$190M Sell
1,207,778
-3,237
-0.3% -$532K 0.93% 27
2019
Q4 		$191M Buy
1,211,015
+146,867
+14% +$21.6M 0.76% 36
2019
Q3 		$148M Sell
1,064,148
-31,934
-3% -$4.39M 0.63% 53
2019
Q2 		$147M Sell
1,096,082
-21,024
-2% -$2.67M 0.62% 57
2019
Q1 		$132M Sell
1,117,106
-21,476
-2% -$2.34M 0.55% 58
2018
Q4 		$116M Sell
1,138,582
-1,097,207
-49% -$118M 0.57% 56
2018
Q3 		$256M Sell
2,235,789
-118,971
-5% -$12.9M 0.89% 19
2018
Q2 		$232M Sell
2,354,760
-84,818
-3% -$8.22M 0.86% 19
2018
Q1 		$223M Sell
2,439,578
-270,927
-10% -$24.8M 0.85% 25
2017
Q4 		$232M Sell
2,710,505
-918,608
-25% -$75.4M 0.9% 21
2017
Q3 		$270M Sell
3,629,113
-649,648
-15% -$47.5M 0.97% 25
2017
Q2 		$295M Sell
4,278,761
-148,521
-3% -$10.2M 1.07% 16
2017
Q1 		$292M Sell
4,427,282
-196,426
-4% -$12.6M 1.1% 13
2016
Q4 		$287M Sell
4,623,708
-45,401
-1% -$2.73M 1.15% 15
2016
Q3 		$269M Buy
4,669,109
+844,634
+22% +$47.7M 1.02% 19
2016
Q2 		$196M Buy
3,824,475
+20,890
+0.5% +$1.09M 0.77% 37
2016
Q1 		$210M Buy
3,803,585
+2,274,329
+149% +$119M 0.83% 33
2015
Q4 		$84.8M Buy
1,529,256
+1,520,324
+17,021% +$80M 0.34% 104
2015
Q3 		$395K Buy
+8,932
New +$401K ﹤0.01% 1014

Other funds holding MSFT

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
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
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

William Blair Investment Management's MSFT Position: Q1 2026 in Review

William Blair Investment Management reduced its Microsoft (MSFT) stake by 17% in Q1 2026, selling an estimated $248M and leaving 2,896,782 shares worth $1.07B. The position accounts for 3.54% of the portfolio, ranked #4.

William Blair Investment Management first reported a position in MSFT in Q3 2015 and has held it in 43 quarters since. The position peaked at $2.01B in Q2 2024. 6,183 funds tracked by Wall St. Rank hold MSFT as of Q1 2026.

  • William Blair Investment Management held 2,896,782 shares of Microsoft worth $1.07B as of Q1 2026.
  • William Blair Investment Management sold 593,520 Microsoft shares in Q1 2026, an estimated $248M.
  • Microsoft made up 3.54% of William Blair Investment Management's portfolio in Q1 2026, its #4 holding.
  • William Blair Investment Management first reported a position in Microsoft in Q3 2015 and has held it in 43 quarters since.
  • William Blair Investment Management's Microsoft position peaked at $2.01B in Q2 2024.
  • 6,183 funds tracked by Wall St. Rank held Microsoft as of Q1 2026.

Based on William Blair Investment Management's 13F filing for Q1 2026, filed 8 May 2026.