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Advanced Drainage Systems

545 hedge funds and large institutions have $10.3B invested in Advanced Drainage Systems in 2025 Q4 according to their latest regulatory filings, with 92 funds opening new positions, 160 increasing their positions, 214 reducing their positions, and 38 closing their positions.

New
Increased
Maintained
Reduced
Closed

142% more first-time investments, than exits

New positions opened: 92 | Existing positions closed: 38

9% more funds holding

Funds holding: 498545 (+47)

6% more call options, than puts

Call options by funds: $31.8M | Put options by funds: $30.1M

2% more capital invested

Capital invested by funds: $10.1B → $10.3B (+$216M)

2.08% less ownership

Funds ownership: 93.69%91.61% (-2.1%)

25% less repeat investments, than reductions

Existing positions increased: 160 | Existing positions reduced: 214

33% less funds holding in top 10

Funds holding in top 10: 96 (-3)

Holders
545
Holders Change
+47
Holders Change %
+9.44%
% of All Funds
6.63%
Holding in Top 10
6
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-33.33%
% of All Funds
0.07%
New
92
Increased
160
Reduced
214
Closed
38
Calls
$31.8M
Puts
$30.1M
Net Calls
+$1.7M
Net Calls Change
-$15.5M
Name Holding Trade Value Shares
Change
Change in
Stake
Vanguard Group
1
Vanguard Group
Pennsylvania
$1.07B -$10.2M -70,393 -0.9%
BlackRock
2
BlackRock
New York
$1.03B +$9.99M +69,022 +1%
UBS AM
3
UBS AM
Illinois
$370M -$37.1M -256,473 -9%
State Street
4
State Street
Massachusetts
$358M -$11.9M -82,471 -3%
First Trust Advisors
5
First Trust Advisors
Illinois
$351M +$830K +5,734 +0.2%
Baillie Gifford & Co
6
Baillie Gifford & Co
United Kingdom
$325M -$21.9M -151,057 -6%
Impax Asset Management Group
7
Impax Asset Management Group
United Kingdom
$299M -$62.7M -433,353 -17%
Morgan Stanley
8
Morgan Stanley
New York
$248M -$42.1M -290,887 -15%
Pictet Asset Management
9
Pictet Asset Management
Switzerland
$240M -$59.8M -412,895 -20%
American Century Companies
10
American Century Companies
Missouri
$219M +$6.05M +41,762 +3%
IC
11
Impactive Capital
New York
$211M -$29.9M -206,253 -12%
Amundi
12
Amundi
France
$185M +$82.9M +572,193 +81%
Geode Capital Management
13
Geode Capital Management
Massachusetts
$184M +$2.18M +15,069 +1%
Wellington Management Group
14
Wellington Management Group
Massachusetts
$183M +$10.9M +75,250 +6%
Kayne Anderson Rudnick Investment Management
15
Kayne Anderson Rudnick Investment Management
California
$172M -$9.79M -67,645 -5%
Dimensional Fund Advisors
16
Dimensional Fund Advisors
Texas
$172M +$7.34M +50,686 +4%
Norges Bank
17
Norges Bank
Norway
$157M +$157M +1,081,179 New
Invesco
18
Invesco
Georgia
$143M -$2.05M -14,156 -1%
Capital International Investors
19
Capital International Investors
California
$136M +$346K +2,388 +0.3%
KBC Group
20
KBC Group
Belgium
$131M -$1.16M -8,026 -0.9%
Citadel Advisors
21
Citadel Advisors
Florida
$125M +$35M +241,493 +39%
Charles Schwab
22
Charles Schwab
California
$104M +$2.85M +19,689 +3%
William Blair Investment Management
23
William Blair Investment Management
Illinois
$99.6M -$19.1M -132,156 -16%
MU
24
Mirova US
Massachusetts
$95.7M -$2.95M -20,405 -3%
Schroder Investment Management Group
25
Schroder Investment Management Group
United Kingdom
$90.7M -$1.9M -13,114 -2%