William Blair Investment Management
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William Blair Investment Management’s Alaska Air ALK Stock Holding History

William Blair Investment Management’s Portfolio ALK Stock Details ALK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$10.7M Sell
205,362
-52,829
-20% -$2.26M 0.03% 307
2026
Q1 		$9.5M Sell
258,191
-276,930
-52% -$13.3M 0.03% 317
2025
Q4 		$26.9M Sell
535,121
-55,160
-9% -$2.55M 0.08% 220
2025
Q3 		$29.4M Sell
590,281
-35,483
-6% -$1.97M 0.08% 219
2025
Q2 		$31M Buy
625,764
+621,182
+13,557% +$30.2M 0.08% 202
2025
Q1 		$226K Sell
4,582
-1,726
-27% -$113K ﹤0.01% 415
2024
Q4 		$408K Sell
6,308
-5,013
-44% -$264K ﹤0.01% 402
2024
Q3 		$512K Sell
11,321
-149
-1% -$5.65K ﹤0.01% 364
2024
Q2 		$463K Hold
11,470
– – ﹤0.01% 372
2024
Q1 		$493K Buy
11,470
+436
+4% +$16.3K ﹤0.01% 361
2023
Q4 		$431K Buy
11,034
+2,108
+24% +$75.2K ﹤0.01% 367
2023
Q3 		$331K Buy
8,926
+3,258
+57% +$148K ﹤0.01% 380
2023
Q2 		$301K Sell
5,668
-15
-0.3% -$682 ﹤0.01% 370
2023
Q1 		$238K Buy
5,683
+13
+0.2% +$610 ﹤0.01% 378
2022
Q4 		$243K Buy
5,670
+21
+0.4% +$925 ﹤0.01% 383
2022
Q3 		$221K Buy
5,649
+493
+10% +$21.7K ﹤0.01% 377
2022
Q2 		$206K Sell
5,156
-4,116
-44% -$201K ﹤0.01% 394
2022
Q1 		$538K Buy
9,272
+1,339
+17% +$73K ﹤0.01% 392
2021
Q4 		$413K Buy
7,933
+3,127
+65% +$169K ﹤0.01% 409
2021
Q3 		$282K Buy
+4,806
New +$277K ﹤0.01% 422
2019
Q1 		– Sell
-17,747
Closed -$1.08M – 407
2018
Q4 		$1.08M Buy
+17,747
New +$1.15M 0.01% 380

Other funds holding ALK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
CCM
Causeway Capital Management Los Angeles, California $9.24B AUM 21.27% 1-Year Est. Return

William Blair Investment Management's ALK Position: Q2 2026 in Review

William Blair Investment Management reduced its Alaska Air (ALK) stake by 20% in Q2 2026, selling an estimated $2.26M and leaving 205,362 shares worth $10.7M. The position accounts for 0.03% of the portfolio, ranked #307.

William Blair Investment Management first reported a position in ALK in Q4 2018 and has held it in 21 quarters since. The position peaked at $31M in Q2 2025. 488 funds tracked by Wall St. Rank hold ALK as of Q2 2026.

  • William Blair Investment Management held 205,362 shares of Alaska Air worth $10.7M as of Q2 2026.
  • William Blair Investment Management sold 52,829 Alaska Air shares in Q2 2026, an estimated $2.26M.
  • Alaska Air made up 0.03% of William Blair Investment Management's portfolio in Q2 2026, its #307 holding.
  • William Blair Investment Management first reported a position in Alaska Air in Q4 2018 and has held it in 21 quarters since.
  • William Blair Investment Management's Alaska Air position peaked at $31M in Q2 2025.
  • 488 funds tracked by Wall St. Rank held Alaska Air as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.