William Blair & Company’s KLA KLAC Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$47.2M Buy
320,800
+2,260
+0.7% +$331K 0.14% 147
2025
Q4
$38.7M Buy
318,540
+5,840
+2% +$685K 0.1% 161
2025
Q3
$33.7M Sell
312,700
-2,690
-0.9% -$251K 0.09% 170
2025
Q2
$28.3M Buy
315,390
+5,810
+2% +$437K 0.08% 190
2025
Q1
$21M Sell
309,580
-2,520
-0.8% -$182K 0.06% 209
2024
Q4
$19.7M Buy
312,100
+1,860
+0.6% +$126K 0.06% 226
2024
Q3
$24M Buy
310,240
+7,580
+3% +$595K 0.07% 206
2024
Q2
$25M Buy
302,660
+11,430
+4% +$844K 0.08% 193
2024
Q1
$20.3M Buy
291,230
+24,410
+9% +$1.57M 0.06% 209
2023
Q4
$15.5M Buy
266,820
+6,340
+2% +$330K 0.05% 243
2023
Q3
$11.9M Buy
260,480
+16,080
+7% +$771K 0.05% 279
2023
Q2
$11.9M Sell
244,400
-9,320
-4% -$389K 0.04% 285
2023
Q1
$10.1M Buy
253,720
+13,590
+6% +$536K 0.04% 303
2022
Q4
$9.05M Buy
240,130
+4,990
+2% +$174K 0.04% 310
2022
Q3
$7.12M Sell
235,140
-4,200
-2% -$145K 0.03% 341
2022
Q2
$7.64M Buy
239,340
+13,680
+6% +$460K 0.03% 337
2022
Q1
$8.26M Buy
225,660
+4,130
+2% +$154K 0.03% 356
2021
Q4
$9.53M Buy
221,530
+44,620
+25% +$1.72M 0.03% 348
2021
Q3
$5.92M Buy
176,910
+10,160
+6% +$339K 0.02% 427
2021
Q2
$5.41M Buy
166,750
+4,100
+3% +$131K 0.02% 444
2021
Q1
$5.37M Sell
162,650
-5,480
-3% -$165K 0.02% 438
2020
Q4
$4.35M Sell
168,130
-180
-0.1% -$4.2K 0.02% 466
2020
Q3
$3.26M Buy
168,310
+139,510
+484% +$2.76M 0.01% 483
2020
Q2
$560K Buy
28,800
+4,600
+19% +$78.6K ﹤0.01% 903
2020
Q1
$348K Sell
24,200
-12,990
-35% -$209K ﹤0.01% 973
2019
Q4
$663K Buy
37,190
+14,950
+67% +$251K ﹤0.01% 897
2019
Q3
$355K Buy
22,240
+990
+5% +$13.8K ﹤0.01% 1063
2019
Q2
$251K Sell
21,250
-770
-3% -$8.9K ﹤0.01% 1218
2019
Q1
$263K Buy
+22,020
New +$237K ﹤0.01% 1192
2018
Q1
Sell
-101,890
Closed -$1.07M 1545
2017
Q4
$1.07M Buy
101,890
+82,790
+433% +$873K 0.01% 730
2017
Q3
$202K Buy
+19,100
New +$182K ﹤0.01% 1250
2014
Q4
Sell
-35,920
Closed -$282K 2125
2014
Q3
$282K Hold
35,920
﹤0.01% 1863
2014
Q2
$260K Sell
35,920
-170
-0.5% -$1.13K ﹤0.01% 1859
2014
Q1
$250K Buy
+36,090
New +$233K ﹤0.01% 1821

Other funds holding KLAC

William Blair & Company's KLAC Position: Q1 2026 in Review

William Blair & Company increased its KLA (KLAC) stake by 0.71% in Q1 2026, buying an estimated $331K and bringing the position to 320,800 shares worth $47.2M. The position accounts for 0.14% of the portfolio, ranked #147.

William Blair & Company first reported a position in KLAC in Q1 2014 and has held it in 34 quarters since. 2,064 funds tracked by Wall St. Rank hold KLAC as of Q1 2026.

  • William Blair & Company held 320,800 shares of KLA worth $47.2M as of Q1 2026.
  • William Blair & Company bought 2,260 KLA shares in Q1 2026, an estimated $331K.
  • KLA made up 0.14% of William Blair & Company's portfolio in Q1 2026, its #147 holding.
  • William Blair & Company first reported a position in KLA in Q1 2014 and has held it in 34 quarters since.
  • 2,064 funds tracked by Wall St. Rank held KLA as of Q1 2026.

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