ADVANCED DRAINAGE SYSTEMS IN (WMS) Institutional Shareholders
ADVANCED DRAINAGE SYSTEMS IN (WMS) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $9.43B in WMS holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of WMS tracked by InsiderSet, reporting ownership valued at approximately $1.02B in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.08B, representing an estimated gain of +5.85% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 43% of the total disclosed WMS value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Portfolio Management Llc, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in ADVANCED DRAINAGE SYSTEMS IN (WMS).
This page ranks the largest institutional WMS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
561
Total Reported Value
$9.43B
Largest Holder
Blackrock, Inc.
Largest Position
$1.02B
Insider Transactions (90d)
50
Latest Filing Quarter
Q2 2026
New Institutional Positions
49
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.02% | 7,422,729 | $1,017,878,779 | $1,077,409,114 | +$59,530,335 | +5.85% | |
| Vanguard Portfolio Management Llc | 0.03% | 3,615,687 | $495,819,158 | $524,816,968 | +$28,997,810 | +5.85% | |
| Vanguard Capital Management Llc | 0.01% | 3,423,703 | $469,492,392 | $496,950,490 | +$27,458,098 | +5.85% | |
| Storebrand Asset Management As | 0.12% | 3,741,269 | $355,464,194 | $543,045,195 | +$187,581,001 | +52.77% | |
| State Street Corp | 0.01% | 2,489,531 | $341,389,386 | $361,355,425 | +$19,966,039 | +5.85% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.07% | 2,450,123 | $335,985,368 | $355,635,353 | +$19,649,985 | +5.85% | |
| Baillie Gifford & Co | 0.29% | 2,047,349 | $280,752,969 | $297,172,707 | +$16,419,738 | +5.85% | |
| First Trust Advisors Lp | 0.20% | 2,044,057 | $280,301,449 | $296,694,874 | +$16,393,425 | +5.85% | |
| Impax Asset Management Group Plc | 1.84% | 1,927,510 | $264,319,446 | $279,778,077 | +$15,458,631 | +5.85% | |
| American Century Companies Inc | 0.12% | 1,657,753 | $227,327,669 | $240,622,848 | +$13,295,179 | +5.85% | |
| Geode Capital Management, Llc | 0.01% | 1,344,795 | $184,456,288 | $195,196,994 | +$10,740,706 | +5.82% | |
| Morgan Stanley | 0.01% | 1,333,340 | $182,841,559 | $193,534,301 | +$10,692,742 | +5.85% | |
| Pictet Asset Management Holding Sa | 0.17% | 1,127,974 | $177,036,073 | $163,725,426 | -$13,310,647 | -7.52% | |
| Amundi | 0.05% | 1,288,672 | $176,734,018 | $187,050,741 | +$10,316,723 | +5.84% | |
| Dimensional Fund Advisors Lp | 0.03% | 1,191,778 | $163,396,426 | $172,986,577 | +$9,590,151 | +5.87% | |
| Kayne Anderson Rudnick Investment Management Llc | 0.45% | 1,106,423 | $151,723,861 | $160,597,298 | +$8,873,437 | +5.85% | |
| Wellington Management Group Llp | 0.03% | 1,063,231 | $145,800,867 | $154,327,980 | +$8,527,113 | +5.85% | |
| Invesco Ltd. | 0.02% | 982,528 | $134,734,063 | $142,613,939 | +$7,879,876 | +5.85% | |
| Impactive Capital Lp | 8.52% | 856,492 | $117,450,748 | $124,319,814 | +$6,869,066 | +5.85% | |
| Charles Schwab Investment Management Inc | 0.01% | 702,650 | $96,354,395 | $101,989,648 | +$5,635,253 | +5.85% | |
| William Blair Investment Management, Llc | 0.30% | 655,684 | $89,913,947 | $95,172,533 | +$5,258,586 | +5.85% | |
| Capital International Investors | 0.02% | 639,021 | $87,628,950 | $92,753,898 | +$5,124,948 | +5.85% | |
| Mirova Us Llc | 0.98% | 628,843 | $86,233,241 | $91,276,561 | +$5,043,320 | +5.85% | |
| Liontrust Investment Partners Llp | 1.23% | 573,573 | $83,070,578 | $83,254,121 | +$183,543 | +0.22% | |
| Triodos Investment Management Bv | 5.05% | 528,311 | $82,923,695 | $76,684,342 | -$6,239,353 | -7.52% | |
| Janus Henderson Group Plc | 0.04% | 592,581 | $81,278,314 | $86,013,132 | +$4,734,818 | +5.83% | |
| Northern Trust Corp | 0.01% | 589,186 | $80,795,077 | $85,520,348 | +$4,725,271 | +5.85% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.11% | 585,972 | $80,349,804 | $85,053,836 | +$4,704,032 | +5.85% | |
| Westwood Holdings Group Inc | 0.55% | 553,211 | $75,861,830 | $80,298,577 | +$4,436,747 | +5.85% | |
| Adage Capital Partners Gp, L.L.C. | 0.12% | 550,000 | $75,421,500 | $79,832,500 | +$4,411,000 | +5.85% | |
| Qube Research & Technologies Ltd | 0.11% | 546,406 | $74,928,655 | $79,310,831 | +$4,382,176 | +5.85% | |
| Bank Of New York Mellon Corp | 0.01% | 519,242 | $71,203,568 | $75,367,976 | +$4,164,408 | +5.85% | |
| Schroder Investment Management Group | 0.06% | 525,787 | $69,119,959 | $76,317,983 | +$7,198,024 | +10.41% | |
| Schonfeld Strategic Advisors Llc | 0.55% | 489,307 | $67,098,667 | $71,022,911 | +$3,924,244 | +5.85% | |
| Swedbank Ab | 0.06% | 410,660 | $64,457,195 | $59,607,299 | -$4,849,896 | -7.52% | |
| Brown Brothers Harriman & Co | 0.34% | 455,614 | $62,478,348 | $66,132,372 | +$3,654,024 | +5.85% | |
| Goldman Sachs Group Inc | 0.01% | 451,763 | $61,950,309 | $65,573,399 | +$3,623,090 | +5.85% | |
| Vanguard Fiduciary Trust Co | 0.02% | 449,649 | $61,660,367 | $65,266,552 | +$3,606,185 | +5.85% | |
| Bank Of America Corp | 0.00% | 439,577 | $60,279,169 | $63,804,602 | +$3,525,433 | +5.85% | |
| Ack Asset Management Llc | 6.68% | 390,000 | $53,480,700 | $56,608,500 | +$3,127,800 | +5.85% | |
| Interval Partners, Lp | 1.83% | 388,875 | $53,326,429 | $56,445,206 | +$3,118,777 | +5.85% | |
| Allianz Asset Management Gmbh | 0.06% | 381,401 | $52,301,519 | $55,360,355 | +$3,058,836 | +5.85% | |
| Hill City Capital, Lp | 1.81% | 370,000 | $50,738,100 | $53,705,500 | +$2,967,400 | +5.85% | |
| Ameriprise Financial Inc | 0.01% | 358,948 | $49,222,691 | $52,101,302 | +$2,878,611 | +5.85% | |
| Corient Private Wealth Llc | 0.07% | 342,161 | $46,915,332 | $49,664,669 | +$2,749,337 | +5.86% | |
| Stifel Financial Corp | 0.04% | 318,746 | $43,709,685 | $46,265,982 | +$2,556,297 | +5.85% | |
| Robeco Schweiz Ag | 0.68% | 271,735 | $42,651,526 | $39,442,335 | -$3,209,191 | -7.52% | |
| Franklin Resources Inc | 0.01% | 298,712 | $40,962,376 | $43,358,047 | +$2,395,671 | +5.85% | |
| Van Lanschot Kempen Investment Management N.V. | 0.35% | 294,898 | $40,439,363 | $42,804,445 | +$2,365,082 | +5.85% | |
| Gotham Asset Management, Llc | 0.12% | 294,728 | $40,416,051 | $42,779,769 | +$2,363,718 | +5.85% |
Frequently asked questions about WMS
Who owns the most WMS stock?
The largest holders of WMS are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ADVANCED DRAINAGE SYSTEMS IN (WMS).
Is WMS widely held by superinvestors?
Many widely followed stocks like WMS appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly WMS is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.