William Blair & Company
WCN

William Blair & Company’s Waste Connections WCN Stock Holding History

William Blair & Company’s Portfolio WCN Stock Details WCN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$6.6M Sell
40,635
-37,546
-48% -$6.26M 0.02% 436
2025
Q4 		$13.7M Sell
78,181
-7,286
-9% -$1.26M 0.04% 296
2025
Q3 		$15M Sell
85,467
-1,781
-2% -$324K 0.04% 277
2025
Q2 		$16.3M Buy
87,248
+6,449
+8% +$1.24M 0.05% 259
2025
Q1 		$15.8M Sell
80,799
-948
-1% -$175K 0.05% 247
2024
Q4 		$14M Sell
81,747
-1,625
-2% -$295K 0.04% 291
2024
Q3 		$14.9M Buy
83,372
+1,475
+2% +$267K 0.04% 277
2024
Q2 		$14.4M Buy
81,897
+1,998
+3% +$334K 0.04% 270
2024
Q1 		$13.7M Sell
79,899
-2,113
-3% -$340K 0.04% 283
2023
Q4 		$12.2M Buy
82,012
+3,884
+5% +$533K 0.04% 282
2023
Q3 		$10.5M Buy
78,128
+2,702
+4% +$378K 0.04% 291
2023
Q2 		$10.8M Buy
75,426
+2,263
+3% +$316K 0.04% 304
2023
Q1 		$10.2M Buy
73,163
+4,568
+7% +$608K 0.04% 299
2022
Q4 		$9.09M Buy
68,595
+18,709
+38% +$2.54M 0.04% 308
2022
Q3 		$6.74M Buy
49,886
+7,214
+17% +$984K 0.03% 356
2022
Q2 		$5.29M Buy
42,672
+2,148
+5% +$278K 0.02% 407
2022
Q1 		$5.66M Buy
40,524
+10,473
+35% +$1.34M 0.02% 436
2021
Q4 		$4.09M Buy
30,051
+7,185
+31% +$955K 0.01% 524
2021
Q3 		$2.88M Buy
22,866
+441
+2% +$55.8K 0.01% 606
2021
Q2 		$2.68M Sell
22,425
-10
-0% -$1.19K 0.01% 612
2021
Q1 		$2.42M Sell
22,435
-10,739
-32% -$1.09M 0.01% 629
2020
Q4 		$3.4M Buy
33,174
+1,329
+4% +$137K 0.01% 519
2020
Q3 		$3.31M Sell
31,845
-13
-0% -$1.3K 0.01% 478
2020
Q2 		$2.99M Buy
31,858
+328
+1% +$29.2K 0.01% 477
2020
Q1 		$2.44M Buy
31,530
+118
+0.4% +$11.1K 0.02% 474
2019
Q4 		$2.85M Buy
31,412
+1,238
+4% +$112K 0.01% 524
2019
Q3 		$2.78M Buy
30,174
+180
+0.6% +$16.6K 0.02% 499
2019
Q2 		$2.87M Buy
29,994
+15,643
+109% +$1.44M 0.02% 486
2019
Q1 		$1.27M Buy
14,351
+10,604
+283% +$874K 0.01% 668
2018
Q4 		$278K Buy
+3,747
New +$285K ﹤0.01% 1109

Other funds holding WCN

VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Royal Bank of Canada
Royal Bank of Canada Toronto, Ontario, Canada $570B AUM 27.57% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Bank of Montreal
Bank of Montreal Toronto, Ontario, Canada $269B AUM 31.4% 1-Year Est. Return
1832 Asset Management
1832 Asset Management Toronto, Ontario, Canada $109B AUM 35.56% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
Mackenzie Financial
Mackenzie Financial Toronto Ontario, Ontario, Canada $83.3B AUM 31.19% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

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

William Blair & Company reduced its Waste Connections (WCN) stake by 48% in Q1 2026, selling an estimated $6.26M and leaving 40,635 shares worth $6.6M. The position accounts for 0.02% of the portfolio, ranked #436.

William Blair & Company first reported a position in WCN in Q4 2018 and has held it in 30 quarters since. The position peaked at $16.3M in Q2 2025. 794 funds tracked by Wall St. Rank hold WCN as of Q1 2026.

  • William Blair & Company held 40,635 shares of Waste Connections worth $6.6M as of Q1 2026.
  • William Blair & Company sold 37,546 Waste Connections shares in Q1 2026, an estimated $6.26M.
  • Waste Connections made up 0.02% of William Blair & Company's portfolio in Q1 2026, its #436 holding.
  • William Blair & Company first reported a position in Waste Connections in Q4 2018 and has held it in 30 quarters since.
  • William Blair & Company's Waste Connections position peaked at $16.3M in Q2 2025.
  • 794 funds tracked by Wall St. Rank held Waste Connections as of Q1 2026.

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