William Blair & Company’s Fastenal FAST Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $342M | Buy |
7,373,707
+359,041
| +5% | +$16.1M | 0.98% | 15 |
|
|
2025
Q4 | $281M | Buy |
7,014,666
+49,102
| +0.7% | +$2.07M | 0.76% | 25 |
|
|
2025
Q3 | $342M | Buy |
6,965,564
+142,591
| +2% | +$6.74M | 0.91% | 19 |
|
|
2025
Q2 | $287M | Buy |
6,822,973
+237,705
| +4% | +$9.64M | 0.8% | 24 |
|
|
2025
Q1 | $255M | Buy |
6,585,268
+71,734
| +1% | +$2.69M | 0.77% | 29 |
|
|
2024
Q4 | $234M | Sell |
6,513,534
-35,618
| -0.5% | -$1.39M | 0.68% | 36 |
|
|
2024
Q3 | $234M | Buy |
6,549,152
+42,218
| +0.6% | +$1.43M | 0.69% | 33 |
|
|
2024
Q2 | $204M | Sell |
6,506,934
-42,730
| -0.7% | -$1.44M | 0.63% | 39 |
|
|
2024
Q1 | $253M | Sell |
6,549,664
-1,894
| -0% | -$67K | 0.79% | 30 |
|
|
2023
Q4 | $212M | Sell |
6,551,558
-10,952
| -0.2% | -$330K | 0.72% | 32 |
|
|
2023
Q3 | $179M | Sell |
6,562,510
-41,738
| -0.6% | -$1.19M | 0.69% | 33 |
|
|
2023
Q2 | $195M | Sell |
6,604,248
-8,454
| -0.1% | -$231K | 0.71% | 32 |
|
|
2023
Q1 | $178M | Buy |
6,612,702
+21,306
| +0.3% | +$546K | 0.71% | 32 |
|
|
2022
Q4 | $156M | Sell |
6,591,396
-120,016
| -2% | -$2.93M | 0.68% | 35 |
|
|
2022
Q3 | $154M | Buy |
6,711,412
+66,642
| +1% | +$1.68M | 0.71% | 35 |
|
|
2022
Q2 | $166M | Sell |
6,644,770
-236,992
| -3% | -$6.39M | 0.74% | 34 |
|
|
2022
Q1 | $204M | Sell |
6,881,762
-113,746
| -2% | -$3.18M | 0.72% | 30 |
|
|
2021
Q4 | $224M | Sell |
6,995,508
-56,590
| -0.8% | -$1.67M | 0.7% | 30 |
|
|
2021
Q3 | $182M | Buy |
7,052,098
+95,978
| +1% | +$2.6M | 0.62% | 39 |
|
|
2021
Q2 | $181M | Sell |
6,956,120
-209,676
| -3% | -$5.45M | 0.63% | 36 |
|
|
2021
Q1 | $180M | Buy |
7,165,796
+38,180
| +0.5% | +$913K | 0.68% | 30 |
|
|
2020
Q4 | $174M | Sell |
7,127,616
-92,656
| -1% | -$2.18M | 0.64% | 32 |
|
|
2020
Q3 | $163M | Sell |
7,220,272
-158,174
| -2% | -$3.64M | 0.69% | 27 |
|
|
2020
Q2 | $158M | Buy |
7,378,446
+95,140
| +1% | +$1.82M | 0.75% | 28 |
|
|
2020
Q1 | $114M | Sell |
7,283,306
-415,900
| -5% | -$7.32M | 0.71% | 31 |
|
|
2019
Q4 | $142M | Buy |
7,699,206
+189,122
| +3% | +$3.38M | 0.73% | 28 |
|
|
2019
Q3 | $123M | Sell |
7,510,084
-153,392
| -2% | -$2.39M | 0.71% | 30 |
|
|
2019
Q2 | $125M | Sell |
7,663,476
-546,936
| -7% | -$9.02M | 0.71% | 27 |
|
|
2019
Q1 | $132M | Sell |
8,210,412
-293,596
| -3% | -$4.42M | 0.8% | 24 |
|
|
2018
Q4 | $111M | Sell |
8,504,008
-52,016
| -0.6% | -$704K | 0.81% | 25 |
|
|
2018
Q3 | $124M | Sell |
8,556,024
-282,844
| -3% | -$4.03M | 0.76% | 27 |
|
|
2018
Q2 | $106M | Sell |
8,838,868
-1,266,200
| -13% | -$16.4M | 0.72% | 29 |
|
|
2018
Q1 | $138M | Sell |
10,105,068
-2,060,148
| -17% | -$28.4M | 0.98% | 18 |
|
|
2017
Q4 | $166M | Buy |
12,165,216
+455,312
| +4% | +$5.64M | 1.13% | 12 |
|
|
2017
Q3 | $133M | Buy |
11,709,904
+236,624
| +2% | +$2.55M | 1% | 16 |
|
|
2017
Q2 | $125M | Sell |
11,473,280
-11,076
| -0.1% | -$124K | 0.94% | 17 |
|
|
2017
Q1 | $147M | Sell |
11,484,356
-13,316
| -0.1% | -$167K | 1.19% | 9 |
|
|
2016
Q4 | $135M | Sell |
11,497,672
-212,472
| -2% | -$2.33M | 1.21% | 8 |
|
|
2016
Q3 | $122M | Sell |
11,710,144
-583,972
| -5% | -$6.21M | 1.08% | 11 |
|
|
2016
Q2 | $136M | Sell |
12,294,116
-598,420
| -5% | -$6.84M | 1.27% | 9 |
|
|
2016
Q1 | $158M | Buy |
12,892,536
+70,616
| +0.6% | +$768K | 1.49% | 6 |
|
|
2015
Q4 | $131M | Sell |
12,821,920
-497,804
| -4% | -$4.9M | 1.23% | 9 |
|
|
2015
Q3 | $122M | Sell |
13,319,724
-1,892,220
| -12% | -$18.8M | 1.05% | 12 |
|
|
2015
Q2 | $160M | Sell |
15,211,944
-1,072,264
| -7% | -$11.3M | 0.24% | 121 |
|
|
2015
Q1 | $169M | Sell |
16,284,208
-3,507,940
| -18% | -$37.9M | 0.26% | 117 |
|
|
2014
Q4 | $235M | Sell |
19,792,148
-11,430,528
| -37% | -$128M | 0.38% | 45 |
|
|
2014
Q3 | $350M | Sell |
31,222,676
-2,392,908
| -7% | -$27.4M | 0.6% | 7 |
|
|
2014
Q2 | $416M | Sell |
33,615,584
-1,463,204
| -4% | -$18.1M | 0.68% | 6 |
|
|
2014
Q1 | $432M | Buy |
35,078,788
+5,134,872
| +17% | +$60.1M | 0.72% | 8 |
|
|
2013
Q4 | $356M | Buy |
29,943,916
+6,338,304
| +27% | +$76.1M | 0.59% | 13 |
|
|
2013
Q3 | $297M | Buy |
23,605,612
+334,240
| +1% | +$3.96M | 0.53% | 24 |
|
|
2013
Q2 | $266M | Buy |
+23,271,372
| New | +$285M | 0.53% | 17 |
|
Other funds holding FAST
VCM
VPM
William Blair & Company's FAST Position: Q1 2026 in Review
William Blair & Company increased its Fastenal (FAST) stake by 5.1% in Q1 2026, buying an estimated $16.1M and bringing the position to 7,373,707 shares worth $342M. The position accounts for 0.98% of the portfolio, ranked #15.
William Blair & Company first reported a position in FAST in Q2 2013 and has held it in 52 quarters since. The position peaked at $432M in Q1 2014. 1,415 funds tracked by Wall St. Rank hold FAST as of Q1 2026.
- William Blair & Company held 7,373,707 shares of Fastenal worth $342M as of Q1 2026.
- William Blair & Company bought 359,041 Fastenal shares in Q1 2026, an estimated $16.1M.
- Fastenal made up 0.98% of William Blair & Company's portfolio in Q1 2026, its #15 holding.
- William Blair & Company first reported a position in Fastenal in Q2 2013 and has held it in 52 quarters since.
- William Blair & Company's Fastenal position peaked at $432M in Q1 2014.
- 1,415 funds tracked by Wall St. Rank held Fastenal as of Q1 2026.
Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.