CM
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Castleark Management’s Advanced Drainage Systems WMS Stock Holding History

Castleark 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 		– Sell
-7,190
Closed -$986K – 349
2026
Q1 		$986K Buy
+7,190
New +$1.11M 0.03% 223
2024
Q4 		– Sell
-2,150
Closed -$338K – 341
2024
Q3 		$338K Sell
2,150
-1,220
-36% -$190K 0.01% 226
2024
Q2 		$541K Hold
3,370
– – 0.02% 223
2024
Q1 		$580K Buy
+3,370
New +$507K 0.02% 226
2022
Q4 		– Sell
-53,890
Closed -$6.7M – 321
2022
Q3 		$6.7M Sell
53,890
-1,260
-2% -$157K 0.37% 60
2022
Q2 		$4.97M Sell
55,150
-25,100
-31% -$2.58M 0.27% 100
2022
Q1 		$9.54M Sell
80,250
-1,950
-2% -$231K 0.41% 46
2021
Q4 		$11.2M Sell
82,200
-8,610
-9% -$1.06M 0.41% 56
2021
Q3 		$9.82M Buy
90,810
+7,055
+8% +$812K 0.38% 77
2021
Q2 		$9.76M Buy
83,755
+16,945
+25% +$1.88M 0.33% 80
2021
Q1 		$6.91M Buy
+66,810
New +$6.53M 0.25% 115
2020
Q4 		– Sell
-86,331
Closed -$5.39M – 370
2020
Q3 		$5.39M Sell
86,331
-114,565
-57% -$6.2M 0.21% 121
2020
Q2 		$9.92M Sell
200,896
-2,660
-1% -$109K 0.43% 53
2020
Q1 		$5.99M Buy
203,556
+55,305
+37% +$2.23M 0.35% 81
2019
Q4 		$5.76M Buy
+148,251
New +$5.49M 0.23% 141

Other funds holding WMS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return
Impax Asset Management Group
Impax Asset Management Group London, United Kingdom $15.4B AUM 26.43% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Castleark Management's WMS Position: Q2 2026 in Review

Castleark Management sold out of Advanced Drainage Systems (WMS) in Q2 2026, closing a stake of 7,190 shares — an estimated $986K sold.

Castleark Management first reported a position in WMS in Q4 2019 and held it in 15 quarters. The position peaked at $11.2M in Q4 2021. 552 funds tracked by Wall St. Rank hold WMS as of Q2 2026.

  • Castleark Management reported no remaining Advanced Drainage Systems position as of Q2 2026 after selling out during the quarter.
  • Castleark Management sold 7,190 Advanced Drainage Systems shares in Q2 2026, an estimated $986K.
  • Castleark Management first reported a position in Advanced Drainage Systems in Q4 2019 and held it in 15 quarters.
  • Castleark Management's Advanced Drainage Systems position peaked at $11.2M in Q4 2021.
  • 552 funds tracked by Wall St. Rank held Advanced Drainage Systems as of Q2 2026.

Based on Castleark Management's 13F filing for Q2 2026, filed 14 Aug 2026.