Mawer Investment Management
WMS icon

Mawer Investment Management’s Advanced Drainage Systems WMS Stock Holding History

Mawer Investment Management’s Portfolio WMS Stock Details WMS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$14.3M Buy
91,012
+37,077
+69% +$5.3M 0.1% 101
2026
Q1 		$7.4M Sell
53,935
-11,438
-17% -$1.77M 0.05% 105
2025
Q4 		$9.47M Sell
65,373
-16,559
-20% -$2.4M 0.05% 96
2025
Q3 		$11.4M Sell
81,932
-459
-0.6% -$60.3K 0.06% 93
2025
Q2 		$9.46M Sell
82,391
-3,181
-4% -$356K 0.05% 97
2025
Q1 		$9.3M Buy
85,572
+8,892
+12% +$1.04M 0.04% 94
2024
Q4 		$8.86M Buy
76,680
+9,673
+14% +$1.34M 0.04% 92
2024
Q3 		$10.5M Buy
67,007
+20,149
+43% +$3.15M 0.05% 90
2024
Q2 		$7.52M Buy
46,858
+13,466
+40% +$2.25M 0.04% 100
2024
Q1 		$5.75M Buy
+33,392
New +$5.03M 0.03% 96

Other funds holding WMS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return
KBC Group
KBC Group Brussels, Belgium $46.3B AUM 43.9% 1-Year Est. Return
TIM
Triodos Investment Management Driebergen-Rijsenburg, Netherlands $1.64B AUM 37.98% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
PNC Financial Services Group
PNC Financial Services Group Pittsburgh, Pennsylvania $202B AUM 37.79% 1-Year Est. Return
RS
Robeco Schweiz Zurich, Switzerland $6.23B AUM 86.54% 1-Year Est. Return

Mawer Investment Management's WMS Position: Q2 2026 in Review

Mawer Investment Management increased its Advanced Drainage Systems (WMS) stake by 69% in Q2 2026, buying an estimated $5.3M and bringing the position to 91,012 shares worth $14.3M. The position accounts for 0.1% of the portfolio, ranked #101.

Mawer Investment Management first reported a position in WMS in Q1 2024 and has held it in 10 quarters since. 267 funds tracked by Wall St. Rank hold WMS as of Q2 2026.

  • Mawer Investment Management held 91,012 shares of Advanced Drainage Systems worth $14.3M as of Q2 2026.
  • Mawer Investment Management bought 37,077 Advanced Drainage Systems shares in Q2 2026, an estimated $5.3M.
  • Advanced Drainage Systems made up 0.1% of Mawer Investment Management's portfolio in Q2 2026, its #101 holding.
  • Mawer Investment Management first reported a position in Advanced Drainage Systems in Q1 2024 and has held it in 10 quarters since.
  • 267 funds tracked by Wall St. Rank held Advanced Drainage Systems as of Q2 2026.

Based on Mawer Investment Management's 13F filing for Q2 2026, filed 7 Aug 2026.