William Blair Investment Management
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William Blair Investment Management’s Armstrong World Industries AWI Stock Holding History

William Blair Investment Management’s Portfolio AWI Stock Details AWI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-121,752
Closed -$23.3M – 417
2025
Q4 		$23.3M Sell
121,752
-12,301
-9% -$2.35M 0.06% 253
2025
Q3 		$26.3M Sell
134,053
-8,086
-6% -$1.5M 0.07% 248
2025
Q2 		$23.1M Sell
142,139
-89,974
-39% -$13.4M 0.06% 269
2025
Q1 		$32.7M Sell
232,113
-11,414
-5% -$1.68M 0.09% 201
2024
Q4 		$34.4M Sell
243,527
-23,495
-9% -$3.45M 0.08% 216
2024
Q3 		$35.1M Sell
267,022
-7,961
-3% -$984K 0.09% 198
2024
Q2 		$31.1M Sell
274,983
-1,138
-0.4% -$132K 0.08% 215
2024
Q1 		$34.3M Sell
276,121
-171,009
-38% -$18.9M 0.09% 219
2023
Q4 		$44M Sell
447,130
-9,981
-2% -$825K 0.13% 152
2023
Q3 		$32.9M Sell
457,111
-34,276
-7% -$2.56M 0.11% 186
2023
Q2 		$36.1M Buy
491,387
+9,242
+2% +$629K 0.12% 183
2023
Q1 		$34.3M Buy
482,145
+63,901
+15% +$4.78M 0.12% 184
2022
Q4 		$28.7M Sell
418,244
-15,973
-4% -$1.21M 0.11% 213
2022
Q3 		$34.4M Sell
434,217
-7,745
-2% -$655K 0.14% 159
2022
Q2 		$33.1M Buy
+441,962
New +$37.4M 0.12% 196
2020
Q3 		– Sell
-147,374
Closed -$11.5M – 345
2020
Q2 		$11.5M Sell
147,374
-125,173
-46% -$9.49M 0.05% 233
2020
Q1 		$21.6M Buy
272,547
+71,694
+36% +$6.91M 0.11% 171
2019
Q4 		$18.9M Sell
200,853
-2,923
-1% -$279K 0.08% 203
2019
Q3 		$19.7M Buy
203,776
+3,338
+2% +$322K 0.08% 199
2019
Q2 		$19.5M Sell
200,438
-73,061
-27% -$6.53M 0.08% 203
2019
Q1 		$21.7M Sell
273,499
-1,785
-0.6% -$124K 0.09% 190
2018
Q4 		$16M Buy
275,284
+6,276
+2% +$401K 0.08% 234
2018
Q3 		$18.7M Buy
269,008
+30,516
+13% +$2.11M 0.06% 256
2018
Q2 		$15.1M Buy
238,492
+17,406
+8% +$1.04M 0.06% 284
2018
Q1 		$12.4M Buy
221,086
+1,891
+0.9% +$115K 0.05% 294
2017
Q4 		$13.3M Sell
219,195
-13,527
-6% -$745K 0.05% 282
2017
Q3 		$11.9M Buy
232,722
+22,552
+11% +$1.06M 0.04% 305
2017
Q2 		$9.67M Buy
+210,170
New +$9.42M 0.04% 309

Other funds holding AWI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
LCOV
London Company of Virginia Richmond, Virginia $17.5B AUM 29.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Bank of Montreal
Bank of Montreal Toronto, Ontario, Canada $304B AUM 35.64% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $32.2B AUM 10.98% 1-Year Est. Return

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

William Blair Investment Management sold out of Armstrong World Industries (AWI) in Q1 2026, closing a stake of 121,752 shares — an estimated $23.3M sold.

William Blair Investment Management first reported a position in AWI in Q2 2017 and held it in 28 quarters. The position peaked at $44M in Q4 2023. 473 funds tracked by Wall St. Rank hold AWI as of Q1 2026.

  • William Blair Investment Management reported no remaining Armstrong World Industries position as of Q1 2026 after selling out during the quarter.
  • William Blair Investment Management sold 121,752 Armstrong World Industries shares in Q1 2026, an estimated $23.3M.
  • William Blair Investment Management first reported a position in Armstrong World Industries in Q2 2017 and held it in 28 quarters.
  • William Blair Investment Management's Armstrong World Industries position peaked at $44M in Q4 2023.
  • 473 funds tracked by Wall St. Rank held Armstrong World Industries as of Q1 2026.

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