William Blair & Company’s Ecolab ECL Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $230M | Buy |
866,411
+8,540
| +1% | +$2.41M | 0.66% | 35 |
|
|
2025
Q4 | $225M | Buy |
857,871
+63,728
| +8% | +$17M | 0.6% | 38 |
|
|
2025
Q3 | $217M | Sell |
794,143
-11,013
| -1% | -$2.99M | 0.58% | 43 |
|
|
2025
Q2 | $217M | Sell |
805,156
-8,977
| -1% | -$2.28M | 0.6% | 44 |
|
|
2025
Q1 | $206M | Sell |
814,133
-29,901
| -4% | -$7.54M | 0.62% | 42 |
|
|
2024
Q4 | $198M | Sell |
844,034
-24,725
| -3% | -$6.15M | 0.58% | 48 |
|
|
2024
Q3 | $222M | Sell |
868,759
-17,591
| -2% | -$4.3M | 0.65% | 40 |
|
|
2024
Q2 | $211M | Sell |
886,350
-13,652
| -2% | -$3.15M | 0.65% | 36 |
|
|
2024
Q1 | $208M | Sell |
900,002
-10,044
| -1% | -$2.13M | 0.65% | 36 |
|
|
2023
Q4 | $181M | Sell |
910,046
-37,004
| -4% | -$6.65M | 0.62% | 40 |
|
|
2023
Q3 | $160M | Sell |
947,050
-159
| -0% | -$28.9K | 0.62% | 38 |
|
|
2023
Q2 | $177M | Buy |
947,209
+10,942
| +1% | +$1.88M | 0.65% | 34 |
|
|
2023
Q1 | $155M | Buy |
936,267
+13,798
| +1% | +$2.15M | 0.62% | 38 |
|
|
2022
Q4 | $134M | Sell |
922,469
-2,883
| -0.3% | -$424K | 0.58% | 42 |
|
|
2022
Q3 | $134M | Buy |
925,352
+5,317
| +0.6% | +$863K | 0.61% | 39 |
|
|
2022
Q2 | $141M | Sell |
920,035
-275,634
| -23% | -$45.7M | 0.63% | 37 |
|
|
2022
Q1 | $211M | Sell |
1,195,669
-89,147
| -7% | -$16.7M | 0.74% | 26 |
|
|
2021
Q4 | $301M | Buy |
1,284,816
+26,904
| +2% | +$6.08M | 0.95% | 19 |
|
|
2021
Q3 | $262M | Sell |
1,257,912
-144,587
| -10% | -$31.7M | 0.89% | 21 |
|
|
2021
Q2 | $289M | Buy |
1,402,499
+56,714
| +4% | +$12.3M | 1% | 18 |
|
|
2021
Q1 | $288M | Buy |
1,345,785
+77,161
| +6% | +$16.4M | 1.09% | 18 |
|
|
2020
Q4 | $274M | Buy |
1,268,624
+71,817
| +6% | +$15M | 1.01% | 19 |
|
|
2020
Q3 | $239M | Buy |
1,196,807
+127,046
| +12% | +$25.4M | 1.01% | 20 |
|
|
2020
Q2 | $213M | Buy |
1,069,761
+67,512
| +7% | +$13.1M | 1.01% | 19 |
|
|
2020
Q1 | $156M | Buy |
1,002,249
+23,508
| +2% | +$4.42M | 0.98% | 17 |
|
|
2019
Q4 | $189M | Buy |
978,741
+18,242
| +2% | +$3.46M | 0.97% | 18 |
|
|
2019
Q3 | $190M | Buy |
960,499
+11,219
| +1% | +$2.25M | 1.1% | 17 |
|
|
2019
Q2 | $187M | Buy |
949,280
+12,351
| +1% | +$2.3M | 1.07% | 16 |
|
|
2019
Q1 | $165M | Buy |
936,929
+14,049
| +2% | +$2.28M | 1.01% | 16 |
|
|
2018
Q4 | $136M | Buy |
922,880
+6,494
| +0.7% | +$992K | 0.99% | 19 |
|
|
2018
Q3 | $144M | Buy |
916,386
+11,832
| +1% | +$1.75M | 0.88% | 20 |
|
|
2018
Q2 | $127M | Buy |
904,554
+12,815
| +1% | +$1.85M | 0.86% | 22 |
|
|
2018
Q1 | $122M | Sell |
891,739
-3,377
| -0.4% | -$454K | 0.86% | 25 |
|
|
2017
Q4 | $120M | Buy |
895,116
+21,405
| +2% | +$2.85M | 0.82% | 26 |
|
|
2017
Q3 | $112M | Sell |
873,711
-3,318
| -0.4% | -$436K | 0.84% | 23 |
|
|
2017
Q2 | $116M | Buy |
877,029
+12,142
| +1% | +$1.57M | 0.87% | 18 |
|
|
2017
Q1 | $108M | Buy |
864,887
+45,400
| +6% | +$5.55M | 0.87% | 18 |
|
|
2016
Q4 | $96.1M | Buy |
819,487
+15,087
| +2% | +$1.77M | 0.86% | 21 |
|
|
2016
Q3 | $97.9M | Buy |
804,400
+25,025
| +3% | +$3.02M | 0.87% | 20 |
|
|
2016
Q2 | $92.4M | Buy |
779,375
+2,165
| +0.3% | +$252K | 0.86% | 20 |
|
|
2016
Q1 | $86.7M | Sell |
777,210
-8,194
| -1% | -$871K | 0.82% | 23 |
|
|
2015
Q4 | $89.8M | Buy |
785,404
+8,732
| +1% | +$1.03M | 0.84% | 19 |
|
|
2015
Q3 | $85.2M | Buy |
776,672
+5,962
| +0.8% | +$667K | 0.74% | 24 |
|
|
2015
Q2 | $87.1M | Sell |
770,710
-51,899
| -6% | -$5.97M | 0.13% | 207 |
|
|
2015
Q1 | $94.1M | Buy |
822,609
+2,715
| +0.3% | +$298K | 0.14% | 200 |
|
|
2014
Q4 | $85.7M | Sell |
819,894
-331,797
| -29% | -$36.3M | 0.14% | 215 |
|
|
2014
Q3 | $132M | Sell |
1,151,691
-7,259
| -0.6% | -$817K | 0.23% | 139 |
|
|
2014
Q2 | $129M | Sell |
1,158,950
-55,444
| -5% | -$5.94M | 0.21% | 148 |
|
|
2014
Q1 | $131M | Sell |
1,214,394
-15,003
| -1% | -$1.57M | 0.22% | 142 |
|
|
2013
Q4 | $128M | Sell |
1,229,397
-45,887
| -4% | -$4.77M | 0.21% | 137 |
|
|
2013
Q3 | $126M | Sell |
1,275,284
-11,783
| -0.9% | -$1.1M | 0.22% | 135 |
|
|
2013
Q2 | $110M | Buy |
+1,287,067
| New | +$109M | 0.22% | 127 |
|
Other funds holding ECL
VCM
VPM
William Blair & Company's ECL Position: Q1 2026 in Review
William Blair & Company increased its Ecolab (ECL) stake by 1% in Q1 2026, buying an estimated $2.41M and bringing the position to 866,411 shares worth $230M. The position accounts for 0.66% of the portfolio, ranked #35.
William Blair & Company first reported a position in ECL in Q2 2013 and has held it in 52 quarters since. The position peaked at $301M in Q4 2021. 1,693 funds tracked by Wall St. Rank hold ECL as of Q1 2026.
- William Blair & Company held 866,411 shares of Ecolab worth $230M as of Q1 2026.
- William Blair & Company bought 8,540 Ecolab shares in Q1 2026, an estimated $2.41M.
- Ecolab made up 0.66% of William Blair & Company's portfolio in Q1 2026, its #35 holding.
- William Blair & Company first reported a position in Ecolab in Q2 2013 and has held it in 52 quarters since.
- William Blair & Company's Ecolab position peaked at $301M in Q4 2021.
- 1,693 funds tracked by Wall St. Rank held Ecolab as of Q1 2026.
Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.