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ACK Asset Management’s Advanced Drainage Systems WMS Stock Holding History

ACK Asset 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 		$61.2M Hold
390,000
– – 7.15% 1
2026
Q1 		$53.5M Hold
390,000
– – 6.68% 2
2025
Q4 		$56.5M Hold
390,000
– – 7.09% 3
2025
Q3 		$54.1M Buy
390,000
+45,000
+13% +$5.91M 6.77% 5
2025
Q2 		$39.6M Buy
+345,000
New +$38.6M 5.2% 12
2020
Q2 		– Sell
-286,500
Closed -$6.2M – 24
2020
Q1 		$6.2M Sell
286,500
-573,500
-67% -$23.2M 3.1% 14
2019
Q4 		$18.5M Sell
860,000
-373,300
-30% -$13.8M 5.37% 9
2019
Q3 		$29.3M Buy
1,233,300
+101,800
+9% +$3.31M 8.25% 1
2019
Q2 		$24.8M Sell
1,131,500
-85,500
-7% -$2.47M 7.19% 1
2019
Q1 		$26.9M Buy
1,217,000
+45,600
+4% +$1.15M 7.43% 3
2018
Q4 		$25.7M Buy
1,171,400
+51,400
+5% +$1.38M 8.73% 5
2018
Q3 		$34.6M Sell
1,120,000
-55,300
-5% -$1.68M 9.51% 3
2018
Q2 		$25.5M Sell
1,175,300
-400,000
-25% -$10.7M 6.82% 4
2018
Q1 		$40.8M Buy
1,575,300
+75,300
+5% +$1.91M 10.26% 1
2017
Q4 		$35.8M Buy
1,500,000
+675,000
+82% +$14.5M 8.03% 3
2017
Q3 		$16.7M Sell
825,000
-550,000
-40% -$11.1M 4.61% 8
2017
Q2 		$27.6M Buy
1,375,000
+40,000
+3% +$859K 6.24% 4
2017
Q1 		$29M Buy
1,335,000
+305,000
+30% +$6.92M 8.58% 1
2016
Q4 		$21.2M Sell
1,030,000
-128,200
-11% -$2.69M 6.24% 5
2016
Q3 		$27.9M Hold
1,158,200
– – 8.45% 3
2016
Q2 		$31.7M Buy
1,158,200
+363,200
+46% +$8.84M 9.42% 2
2016
Q1 		$16.9M Buy
795,000
+405,000
+104% +$8.32M 6.66% 5
2015
Q4 		$9.37M Buy
+390,000
New +$11M 4.8% 9
2015
Q2 		– Sell
-1,090,100
Closed -$32.6M – 39
2015
Q1 		$32.6M Buy
1,090,100
+40,000
+4% +$1.04M 10.31% 2
2014
Q4 		$24.1M Buy
1,050,100
+630,600
+150% +$13.8M 8.7% 4
2014
Q3 		$8.79M Buy
+419,500
New +$7.54M 3.16% 11

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

ACK Asset Management's WMS Position: Q2 2026 in Review

ACK Asset Management held its Advanced Drainage Systems (WMS) position steady in Q2 2026 at 390,000 shares worth $61.2M. The position accounts for 7.15% of the portfolio, ranked #1.

ACK Asset Management first reported a position in WMS in Q3 2014 and has held it in 26 quarters since. 551 funds tracked by Wall St. Rank hold WMS as of Q2 2026.

  • ACK Asset Management held 390,000 shares of Advanced Drainage Systems worth $61.2M as of Q2 2026.
  • ACK Asset Management left its Advanced Drainage Systems share count unchanged in Q2 2026.
  • Advanced Drainage Systems made up 7.15% of ACK Asset Management's portfolio in Q2 2026, its #1 holding.
  • ACK Asset Management first reported a position in Advanced Drainage Systems in Q3 2014 and has held it in 26 quarters since.
  • 551 funds tracked by Wall St. Rank held Advanced Drainage Systems as of Q2 2026.

Based on ACK Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.