| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 8.9% | $798,625,019 | 6,885,292 | BlackRock, Inc. | 30 Jun 2025 |
As of 30 Sep 2025, 491 institutional investors reported holding 72,556,187 shares of ADVANCED DRAINAGE SYSTEMS, INC. - Common Stock (WMS). This represents 94% of the company’s total 77,362,831 outstanding shares.
The largest institutional shareholders of ADVANCED DRAINAGE SYSTEMS, INC. - Common Stock (WMS) together control 61% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 9.7% | 7,480,781 | -0.38% | 0.02% | $1,037,584,325 |
| BlackRock, Inc. | 9.1% | 7,042,895 | -0.4% | 0.02% | $976,849,466 |
| UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC | 3.6% | 2,811,834 | -9.7% | 0.08% | $390,001,376 |
| STATE STREET CORP | 3.3% | 2,551,901 | +3.1% | 0.01% | $353,948,669 |
| Impax Asset Management Group plc | 3.2% | 2,500,076 | -18% | 2% | $345,787,561 |
| FIRST TRUST ADVISORS LP | 3.1% | 2,416,942 | +11% | 0.25% | $335,229,749 |
| BAILLIE GIFFORD & CO | 3.1% | 2,395,071 | -3.1% | 0.25% | $332,196,348 |
| Pictet Asset Management Holding SA | 2.7% | 2,071,398 | -20% | 0.28% | $287,297,920 |
| MORGAN STANLEY | 2.6% | 2,001,013 | +20% | 0.02% | $277,540,963 |
| Impactive Capital LP | 2.2% | 1,663,999 | 0% | 11% | $230,796,661 |
| AMERICAN CENTURY COMPANIES INC | 1.9% | 1,472,176 | +6.5% | 0.1% | $204,190,811 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 1.6% | 1,258,264 | -1.6% | 0.43% | $174,521,308 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.6% | 1,256,384 | +2.8% | 0.01% | $174,294,196 |
| WELLINGTON MANAGEMENT GROUP LLP | 1.5% | 1,188,906 | +234% | 0.03% | $164,901,262 |
| DIMENSIONAL FUND ADVISORS LP | 1.5% | 1,138,378 | +1.4% | 0.03% | $157,889,410 |
| Invesco Ltd. | 1.3% | 998,451 | -1.1% | 0.02% | $138,485,155 |
| Interval Partners, LP | 1.3% | 968,534 | +98% | 2.9% | $134,335,666 |
| Capital International Investors | 1.2% | 933,851 | +35% | 0.02% | $129,525,134 |
| KBC Group NV | 1.2% | 910,092 | +3.4% | 0.3% | $126,230,000 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 1.1% | 820,203 | -12% | 0.29% | $113,762,087 |
| Amundi | 0.91% | 707,383 | -39% | 0.03% | $98,339,298 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.9% | 698,269 | +4.8% | 0.02% | $96,849,910 |
| Mirova US LLC | 0.88% | 681,397 | -3.8% | 0.95% | $94,509,764 |
| Schonfeld Strategic Advisors LLC | 0.83% | 642,208 | +51% | 0.62% | $89,074,242 |
| SCHRODER INVESTMENT MANAGEMENT GROUP | 0.81% | 630,399 | +17% | 0.07% | $86,995,062 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 1,226,988 | $178,212,920 | +$18,497,664 | $144.83 | 61 |
| 2025 Q3 | 72,556,187 | $10,061,819,901 | +$23,173,409 | $138.70 | 491 |
| 2025 Q2 | 72,460,777 | $8,316,490,878 | +$392,812,530 | $114.86 | 476 |
| 2025 Q1 | 69,076,382 | $7,503,320,524 | +$191,875,640 | $108.65 | 453 |
| 2024 Q4 | 66,986,249 | $7,742,618,521 | +$221,623,782 | $115.60 | 453 |
| 2024 Q3 | 64,770,599 | $10,182,898,305 | +$135,053,937 | $157.16 | 481 |
| 2024 Q2 | 63,568,384 | $10,195,595,424 | +$188,460,400 | $160.39 | 492 |
| 2024 Q1 | 61,777,273 | $10,635,620,185 | -$284,593,923 | $172.24 | 482 |
| 2023 Q4 | 1,415,918 | $199,134,708 | -$6,364,382 | $140.64 | 4 |
| 2023 Q3 | 64,201,913 | $7,307,842,834 | -$262,888,167 | $113.83 | 401 |
| 2023 Q2 | 65,404,125 | $7,440,696,461 | +$12,895,598 | $113.78 | 368 |
| 2023 Q1 | 66,132,942 | $5,564,505,616 | +$118,197,182 | $84.21 | 340 |
| 2022 Q4 | 65,118,566 | $5,337,832,013 | -$157,885,087 | $81.97 | 353 |
| 2022 Q3 | 66,248,425 | $8,238,233,557 | +$109,013,382 | $124.37 | 361 |
| 2022 Q2 | 63,878,064 | $5,748,990,761 | -$45,031,326 | $90.07 | 305 |
| 2022 Q1 | 63,594,004 | $7,554,301,863 | +$178,351,649 | $118.81 | 297 |
| 2021 Q4 | 63,741,939 | $8,674,946,299 | +$7,749,375 | $136.13 | 300 |
| 2021 Q3 | 62,116,946 | $6,718,833,630 | +$422,060,336 | $108.17 | 279 |
| 2021 Q2 | 58,085,160 | $6,769,488,207 | -$83,105,388 | $116.57 | 268 |
| 2021 Q1 | 58,862,562 | $6,078,406,122 | -$14,762,214 | $103.39 | 259 |
| 2020 Q4 | 58,957,485 | $4,928,073,788 | +$20,488,010 | $83.58 | 221 |
| 2020 Q3 | 59,507,642 | $3,711,760,310 | +$54,980,053 | $62.44 | 200 |
| 2020 Q2 | 58,878,608 | $2,908,438,076 | +$86,905,457 | $49.40 | 169 |
| 2020 Q1 | 57,046,697 | $1,678,457,873 | -$11,431,035 | $29.44 | 153 |
| 2019 Q4 | 57,748,695 | $2,242,627,285 | +$90,259,031 | $38.84 | 160 |
| 2019 Q3 | 55,030,969 | $1,775,496,132 | +$319,338,037 | $32.27 | 148 |
| 2019 Q2 | 45,215,088 | $1,481,610,598 | +$50,105,009 | $32.79 | 132 |
| 2019 Q1 | 46,408,473 | $1,191,452,556 | +$10,179,924 | $25.77 | 134 |
| 2018 Q4 | 46,361,953 | $1,121,588,707 | -$12,466,626 | $24.25 | 142 |
| 2018 Q3 | 46,588,839 | $1,439,233,572 | +$57,929,565 | $30.90 | 142 |
| 2018 Q2 | 44,453,618 | $1,266,043,687 | +$74,397,923 | $28.55 | 116 |
| 2018 Q1 | 44,466,449 | $1,151,650,313 | -$2,484,777 | $25.90 | 119 |
| 2017 Q4 | 44,743,497 | $1,067,422,796 | +$6,627,811 | $23.85 | 105 |
| 2017 Q3 | 44,625,725 | $904,303,163 | +$23,685,939 | $20.25 | 97 |
| 2017 Q2 | 43,693,451 | $875,417,706 | -$22,086,235 | $20.10 | 97 |
| 2017 Q1 | 44,349,104 | $970,951,341 | +$16,773,627 | $21.90 | 105 |
| 2016 Q4 | 45,697,609 | $941,356,898 | -$17,225,401 | $20.60 | 102 |
| 2016 Q3 | 38,685,870 | $930,422,417 | -$16,747,839 | $24.06 | 97 |
| 2016 Q2 | 38,985,735 | $1,063,640,864 | +$58,193,053 | $27.37 | 101 |
| 2016 Q1 | 37,074,585 | $789,639,000 | +$14,728,662 | $21.30 | 96 |
| 2015 Q4 | 44,317,249 | $1,064,931,569 | -$19,685,062 | $24.03 | 88 |
| 2015 Q3 | 36,886,248 | $1,067,098,433 | +$69,352,793 | $28.93 | 93 |
| 2015 Q2 | 33,863,059 | $993,189,959 | +$59,431,866 | $29.33 | 104 |
| 2015 Q1 | 31,965,052 | $955,779,100 | +$99,576,643 | $29.94 | 97 |
| 2014 Q4 | 37,481,537 | $861,767,363 | +$290,388,024 | $22.98 | 93 |
| 2014 Q3 | 13,653,744 | $285,994,000 | +$285,993,905 | $20.95 | 54 |