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Advanced Drainage Systems

455 hedge funds and large institutions have $7.5B invested in Advanced Drainage Systems in 2025 Q1 according to their latest regulatory filings, with 56 funds opening new positions, 196 increasing their positions, 147 reducing their positions, and 57 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more ownership

Funds ownership:

less funds holding

Funds holding:

2% less first-time investments, than exits

New positions opened: 56 | Existing positions closed: 57

3% less capital invested

Capital invested by funds: $7.77B → $7.5B (-$264M)

25% less funds holding in top 10

Funds holding in top 10: 43 (-1)

Holders
455
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$34.8M
Puts
$28.1M
Net Calls
Net Calls Change

Top Buyers

1 +$114M
2 +$40.6M
3 +$35.6M
4
Amundi
Amundi
France
+$35.2M
5
BAMCO Inc
BAMCO Inc
New York
+$33.4M

Top Sellers

1 -$53.9M
2 -$23.7M
3 -$20.1M
4
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
-$19.2M
5
Citadel Advisors
Citadel Advisors
Florida
-$18.2M
Name Holding Trade Value Shares
Change
Change in
Stake
1
$819M
2
$794M
3
$346M
4
$338M
5
$315M
6
$281M
7
$271M
8
$224M
9
$188M
10
$168M
11
$150M
12
$135M
13
$127M
14
$112M
15
$110M
16
$96M
17
$95.7M
18
$95M
19
$80.2M
20
$75.9M
21
$75M
22
$70.4M
23
$70.3M
24
$70.3M
25
$63.1M