William Blair & Company
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William Blair & Company’s Fastenal FAST Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2025
Q2
$287M Buy
6,822,973
+3,530,339
+107% +$148M 0.8% 24
2025
Q1
$255M Buy
3,292,634
+35,867
+1% +$2.78M 0.77% 29
2024
Q4
$234M Sell
3,256,767
-17,809
-0.5% -$1.28M 0.68% 36
2024
Q3
$234M Buy
3,274,576
+21,109
+0.6% +$1.51M 0.69% 33
2024
Q2
$204M Sell
3,253,467
-21,365
-0.7% -$1.34M 0.63% 39
2024
Q1
$253M Sell
3,274,832
-947
-0% -$73.1K 0.79% 30
2023
Q4
$212M Sell
3,275,779
-5,476
-0.2% -$355K 0.72% 32
2023
Q3
$179M Sell
3,281,255
-20,869
-0.6% -$1.14M 0.69% 33
2023
Q2
$195M Sell
3,302,124
-4,227
-0.1% -$249K 0.71% 32
2023
Q1
$178M Buy
3,306,351
+10,653
+0.3% +$575K 0.71% 32
2022
Q4
$156M Sell
3,295,698
-60,008
-2% -$2.84M 0.68% 35
2022
Q3
$154M Buy
3,355,706
+33,321
+1% +$1.53M 0.71% 35
2022
Q2
$166M Sell
3,322,385
-118,496
-3% -$5.92M 0.74% 34
2022
Q1
$204M Sell
3,440,881
-56,873
-2% -$3.38M 0.72% 30
2021
Q4
$224M Sell
3,497,754
-28,295
-0.8% -$1.81M 0.7% 30
2021
Q3
$182M Buy
3,526,049
+47,989
+1% +$2.48M 0.62% 39
2021
Q2
$181M Sell
3,478,060
-104,838
-3% -$5.45M 0.63% 36
2021
Q1
$180M Buy
3,582,898
+19,090
+0.5% +$960K 0.68% 30
2020
Q4
$174M Sell
3,563,808
-46,328
-1% -$2.26M 0.64% 32
2020
Q3
$163M Sell
3,610,136
-79,087
-2% -$3.57M 0.69% 27
2020
Q2
$158M Buy
3,689,223
+47,570
+1% +$2.04M 0.75% 28
2020
Q1
$114M Sell
3,641,653
-207,950
-5% -$6.5M 0.71% 31
2019
Q4
$142M Buy
3,849,603
+94,561
+3% +$3.49M 0.73% 28
2019
Q3
$123M Sell
3,755,042
-76,696
-2% -$2.51M 0.71% 30
2019
Q2
$125M Buy
3,831,738
+1,779,135
+87% +$58M 0.71% 27
2019
Q1
$132M Sell
2,052,603
-73,399
-3% -$4.72M 0.8% 24
2018
Q4
$111M Sell
2,126,002
-13,004
-0.6% -$680K 0.81% 25
2018
Q3
$124M Sell
2,139,006
-70,711
-3% -$4.1M 0.76% 27
2018
Q2
$106M Sell
2,209,717
-316,550
-13% -$15.2M 0.72% 29
2018
Q1
$138M Sell
2,526,267
-515,037
-17% -$28.1M 0.98% 18
2017
Q4
$166M Buy
3,041,304
+113,828
+4% +$6.23M 1.13% 12
2017
Q3
$133M Buy
2,927,476
+59,156
+2% +$2.7M 1% 16
2017
Q2
$125M Sell
2,868,320
-2,769
-0.1% -$121K 0.94% 17
2017
Q1
$147M Sell
2,871,089
-3,329
-0.1% -$171K 1.19% 9
2016
Q4
$135M Sell
2,874,418
-53,118
-2% -$2.5M 1.21% 8
2016
Q3
$122M Sell
2,927,536
-145,993
-5% -$6.1M 1.08% 11
2016
Q2
$136M Sell
3,073,529
-149,605
-5% -$6.64M 1.27% 9
2016
Q1
$158M Buy
3,223,134
+17,654
+0.6% +$865K 1.49% 6
2015
Q4
$131M Sell
3,205,480
-124,451
-4% -$5.08M 1.23% 9
2015
Q3
$122M Sell
3,329,931
-473,055
-12% -$17.3M 1.05% 12
2015
Q2
$160M Sell
3,802,986
-268,066
-7% -$11.3M 0.24% 121
2015
Q1
$169M Sell
4,071,052
-876,985
-18% -$36.3M 0.26% 117
2014
Q4
$235M Sell
4,948,037
-2,857,632
-37% -$136M 0.38% 45
2014
Q3
$350M Sell
7,805,669
-598,227
-7% -$26.9M 0.6% 7
2014
Q2
$416M Sell
8,403,896
-365,801
-4% -$18.1M 0.68% 6
2014
Q1
$432M Buy
8,769,697
+1,283,718
+17% +$63.3M 0.72% 8
2013
Q4
$356M Buy
7,485,979
+1,584,576
+27% +$75.3M 0.59% 13
2013
Q3
$297M Buy
5,901,403
+83,560
+1% +$4.2M 0.53% 24
2013
Q2
$266M Buy
+5,817,843
New +$266M 0.53% 17