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Advanced Drainage Systems

576 hedge funds and large institutions have $9.51B invested in Advanced Drainage Systems in 2026 Q1 according to their latest regulatory filings, with 97 funds opening new positions, 227 increasing their positions, 167 reducing their positions, and 55 closing their positions.

New
Increased
Maintained
Reduced
Closed

76% more first-time investments, than exits

New positions opened: 97 | Existing positions closed: 55

36% more repeat investments, than reductions

Existing positions increased: 227 | Existing positions reduced: 167

30% more call options, than puts

Call options by funds: $17.3M | Put options by funds: $13.3M

6% more funds holding

Funds holding: 545576 (+31)

2.5% less ownership

Funds ownership: 91.61%89.11% (-2.5%)

8% less capital invested

Capital invested by funds: $10.3B → $9.51B (-$798M)

17% less funds holding in top 10

Funds holding in top 10: 65 (-1)

Holders
576
Holders Change
+31
Holders Change %
+5.69%
% of All Funds
7.09%
Holding in Top 10
5
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-16.67%
% of All Funds
0.06%
New
97
Increased
227
Reduced
167
Closed
55
Calls
$17.3M
Puts
$13.3M
Net Calls
+$3.94M
Net Calls Change
+$2.24M
Name Holding Trade Value Shares
Change
Change in
Stake
BlackRock
1
BlackRock
New York
$1.02B +$48.1M +310,812 +4%
VPM
2
Vanguard Portfolio Management
Pennsylvania
$496M +$560M +3,615,687 New
VCM
3
Vanguard Capital Management
Pennsylvania
$469M +$530M +3,423,703 New
State Street
4
State Street
Massachusetts
$341M +$3.11M +20,101 +0.8%
UBS AM
5
UBS AM
Illinois
$336M -$16.3M -105,238 -4%
Pictet Asset Management
6
Pictet Asset Management
Switzerland
$302M +$84.5M +546,298 +33%
Baillie Gifford & Co
7
Baillie Gifford & Co
United Kingdom
$281M -$30.4M -196,665 -9%
First Trust Advisors
8
First Trust Advisors
Illinois
$280M -$58.6M -378,619 -16%
Impax Asset Management Group
9
Impax Asset Management Group
United Kingdom
$264M -$21.5M -139,213 -7%
American Century Companies
10
American Century Companies
Missouri
$227M +$22.3M +143,815 +9%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$184M +$11.3M +73,342 +6%
Morgan Stanley
12
Morgan Stanley
New York
$183M -$58.3M -376,786 -22%
Amundi
13
Amundi
France
$177M +$1.41M +9,096 +0.7%
Dimensional Fund Advisors
14
Dimensional Fund Advisors
Texas
$163M +$420K +2,714 +0.2%
Kayne Anderson Rudnick Investment Management
15
Kayne Anderson Rudnick Investment Management
California
$152M -$13M -84,196 -7%
Wellington Management Group
16
Wellington Management Group
Massachusetts
$146M -$31.1M -200,925 -16%
Invesco
17
Invesco
Georgia
$135M -$273K -1,767 -0.2%
KBC Group
18
KBC Group
Belgium
$126M +$2.31M +14,915 +2%
IC
19
Impactive Capital
New York
$117M -$93M -601,254 -41%
Charles Schwab
20
Charles Schwab
California
$96.4M -$2.37M -15,308 -2%
William Blair Investment Management
21
William Blair Investment Management
Illinois
$89.9M -$5.01M -32,363 -5%
Capital International Investors
22
Capital International Investors
California
$87.6M -$46M -297,218 -32%
MU
23
Mirova US
Massachusetts
$86.2M -$4.98M -32,149 -5%
Janus Henderson Group
24
Janus Henderson Group
United Kingdom
$81.3M -$964K -6,229 -1%
Northern Trust
25
Northern Trust
Illinois
$80.8M +$930K +6,009 +1%