WMS

ADVANCED DRAINAGE SYSTEMS IN

WMS·00790R104·US·Common Stock·Industrials - Building Products & Equipment-13D/G

WMS (ADVANCED DRAINAGE SYSTEMS IN) is held by 219 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($1.2B), VANGUARD PORTFOLIO MANAGEMENT LLC ($581.6M), VANGUARD CAPITAL MANAGEMENT LLC ($533.2M). Net institutional sentiment: Mixed.

219
Holders
(17 Elite)
$9.3B
Total Value
41% (230)
Consensus
95 buying - 135 selling
13F: Insider & Congress: Updated regularly
WMS

Smart Money Verdict

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Held by 219 funds
17 elite

Who's Trading

Source dates: Price Aug 28, 2026 · Insiders Dec 5, 2025 · Activists Apr 29, 2026 · Congress none

ActivistVAVanguard Capital Management5.1%Apr 29, 2026
ActivistThe Vanguard GroupThe Vanguard Group0.0%Mar 26, 2026
ActivistADAdvanced Drainage Systems Inc. Employee Stock Ownership Plan Trust6.0%Feb 13, 2026
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Top Holders

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Fund
Action
Shares
Value
Weight
Est. P&L
Conviction
Increased
7.5M(+0.6%)$1.2B0.0%+21.14%
32
Increased
3.7M(+2.5%)$581.6M0.0%-12.72%
32
Decreased
3.4M(-0.8%)$533.2M0.0%-12.79%
0
Increased
2.7M(+8.2%)$422.8M0.0%-0.08%
34
Increased
2.7M(+30.2%)$417.6M0.2%+11.27%
47
Decreased
2.3M(-4.2%)$368.3M0.1%+40.94%
0
Decreased
1.8M(-4.2%)$289.7M1.9%+93.59%
0
Decreased
1.8M(-10.4%)$288.1M0.3%+54.84%
0
Decreased
1.6M(-1.4%)$256.5M0.1%+20.99%
0
Increased
1.4M(+4.5%)$218.8M0.0%-2.14%
32
Increased
1.4M(+1.7%)$214.7M0.0%+58.27%
31
Increased
1.4M(+5.1%)$212.7M0.1%+9.54%
32
Increased
1.3M(+7.2%)$200.5M0.0%+29.83%
33
Decreased
1.1M(-48.8%)$177M0.2%-0.33%
0
Decreased
1M(-6.4%)$162.5M0.5%+19.67%
0
Decreased
840,488(-20.9%)$131.9M0.0%+8.04%
0
Increased
839,820(+53.7%)$131.8M0.1%-9.42%
51
Decreased
835,672(-14.9%)$131.2M0.0%+29.41%
0
Decreased
696,500(-0.9%)$109.3M0.0%+50.42%
0
Increased
680,431(+133.7%)$106.8M0.2%+4.08%
58

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Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer

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