Trade Filings
Managers Stocks Filings Superinvestors
Signals Institutional Buying Institutional Selling Insider Activity 13D & 13G Watch Sector Rotation
Tools Stock Screener Manager Screener Compare Managers Consensus Baskets All Research Tools Data API
Learn & AI Learn Ask the Data AI Agents
News ★ Saved
About About us Methodology Contact Disclaimer
Reader
DATA PLANS

Historical data downloads — coming with accounts.

API GATEWAY

Free read-only JSON access to the site's cached data.

Dark mode

🧭 Guided View
New to markets — prices, yields, YTD, market cap? We explain every term as you browse, in plain English. Same data, with the help built in.

⚡ Expert View
You already know the market. Just the data — clean, fast and compact, with no extra explanations. This is the default view.

Interface language
Security record · archived quarter

WMS

Advanced Drainage Systems, Inc. · Basic Materials · Construction Materials

141.50 +0.7% mkt cap $10.85B quote delayed (FMP) · as of Aug 25 22:08 UTC — separate from filing data below

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024
13Tracked holders
-3Δ holders
6.15MShares held
$967.18MReported value
+0New positions
−3Exits
Strongly Falling Conviction score 21/100 How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth -18.8% · share flow -7.8% · net new positions -20.0%formula
Broad distribution — falling shares and fewer holders

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q2 2026 141 -4 49.88M $7.82B +3 −7
Q1 2026 148 +5 48.74M $6.68B +9 −5
Q4 2025 143 -1 53.99M $7.81B +2 −2
Q3 2025 20 0 26.48M $3.67B +1 −2
Q2 2025 18 +4 22.87M $2.63B +4
Q1 2025 11 -4 7.76M $843.49M −4
Q4 2024 15 +1 8.50M $982.41M +1
Q3 2024 13 -3 6.15M $967.18M −3
Q2 2024 16 6.67M $1.07B
Holder count
Who holds it · Q3 2024
#ManagerSharesΔ sharesValueTheir weightHeld
1 Baillie Gifford 3.04M -2.8% $477.59M 0.4% ▼ Trim 2 SEC ↗
2 Baillie Gifford 3.04M -2.8% $477.59M 0.4% ▼ Trim 2 SEC ↗
3 Baillie Gifford 3.04M -2.8% $477.59M 0.4% ▼ Trim 2 SEC ↗
4 Baillie Gifford 3.04M -2.8% $477.59M 0.4% ▼ Trim 2 SEC ↗
5 Geode Capital Management (passive) 1.19M +5.2% $186.58M 0.0% ▲ Add 2 SEC ↗
6 Geode Capital Management (passive) 1.19M +5.2% $186.58M 0.0% ▲ Add 2 SEC ↗
7 Norges Bank (passive) 737.42K +5.7% $115.89M 0.0% ▲ Add 2 SEC ↗
8 Wellington Management 357.91K -18.3% $56.25M 0.0% ▼ Trim 2 SEC ↗
9 Wellington Management 357.91K -18.3% $56.25M 0.0% ▼ Trim 2 SEC ↗
10 Wellington Management 357.91K -18.3% $56.25M 0.0% ▼ Trim 2 SEC ↗
11 Wellington Management 357.91K -18.3% $56.25M 0.0% ▼ Trim 2 SEC ↗
12 Wellington Management 357.91K -18.3% $56.25M 0.0% ▼ Trim 2 SEC ↗
13 Wellington Management 357.91K -18.3% $56.25M 0.0% ▼ Trim 2 SEC ↗
14 Wellington Management 357.91K -18.3% $56.25M 0.0% ▼ Trim 2 SEC ↗
15 Citadel Advisors 199.22K +10.2% $31.31M 0.0% ▲ Add 2 SEC ↗
16 D. E. Shaw & Co. 164.11K +20.7% $25.79M 0.0% ▲ Add 2 SEC ↗
17 D. E. Shaw & Co. 164.11K +20.7% $25.79M 0.0% ▲ Add 2 SEC ↗
18 T. Rowe Price 127.48K -8.4% $20.04M 0.0% ▼ Trim 2 SEC ↗
19 T. Rowe Price 127.48K -8.4% $20.04M 0.0% ▼ Trim 2 SEC ↗
20 Renaissance Technologies 127.40K +42.4% $20.02M 0.0% ▲ Add 2 SEC ↗
21 Millennium Management 70.96K -77.3% $11.15M 0.0% ▼ Trim 2 SEC ↗
22 Gotham Asset Management 45.17K -13.3% $7.10M 0.1% ▼ Trim 2 SEC ↗
23 AQR Capital Management 33.56K +51.1% $5.27M 0.0% ▲ Add 2 SEC ↗
24 AQR Capital Management 33.56K +51.1% $5.27M 0.0% ▲ Add 2 SEC ↗
25 AQR Capital Management 33.56K +51.1% $5.27M 0.0% ▲ Add 2 SEC ↗
26 Adage Capital Partners 33.00K -69.9% $5.19M 0.0% ▼ Trim 2 SEC ↗
27 Fisher Asset Management 31.80K -0.2% $5.00M 0.0% ▼ Trim 2 SEC ↗

“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.

New buyers

No new tracked buyers this quarter.

Exited

Point72 Asset Management $21.66M was 0.1%
Arrowstreet Capital $10.67M was 0.0%
Bridgewater Associates $1.75M was 0.0%

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 572 holders, 69.11M shares, $9.17B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q3 2024 · Methodology · Get this via the API