Latest Period
Q4 2025
Security Snapshot
AdvanSix Inc. - Common Stock, par value $0.01 per share (ASIX) Institutional Ownership
CUSIP: 00773T101
13F Institutional Holders and Ownership History from Q2 2016 to Q1 2026
Institutions Reporting
270
Shares (Excl. Options)
23,882,659
Price
$17.30
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- Type / Class
- Equity / Common Stock, par value $0.01 per share
- Symbol
- ASIX on NYSE
- Shares outstanding
- 26,877,129
- Price per share
- $23.90
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 23,882,659
- Total reported value
- $413,188,989
- % of total 13F portfolios
- 0%
- Share change
- -498,471
- Value change
- -$11,642,775
- Number of holders
- 270
- Price from insider filings
- $23.90
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- ASIX - AdvanSix Inc. - Common Stock, par value $0.01 per share is tracked under CUSIP 00773T101.
- 270 institutions reported positions in Q4 2025.
- 4 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 270 to 188 between Q4 2025 and Q1 2026.
- Reported value moved from $413,188,989 to $298,241,607.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 270 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 00773T101?
CUSIP 00773T101 identifies ASIX - AdvanSix Inc. - Common Stock, par value $0.01 per share in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 00773T101:
Significant Owners of AdvanSix Inc. - Common Stock, par value $0.01 per share (ASIX) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 7.1% | -40% | $46,823,624 | -$31,255,253 | 1,919,001 | -40% | BlackRock, Inc. | 31 Mar 2026 |
| CastleKnight Master Fund LP | 6.2% | $39,826,530 | 1,666,382 | CastleKnight Master Fund LP | 07 May 2026 | |||
| DIMENSIONAL FUND ADVISORS LP | 4.8% | $22,539,738 | 1,302,875 | Dimensional Fund Advisors LP | 31 Dec 2025 | |||
| VICTORY CAPITAL MANAGEMENT INC | 0.51% | -97% | $2,512,941 | -$42,615,188 | 137,620 | -94% | Victory Capital Management, Inc. | 30 Sep 2025 |
As of 31 Dec 2025, 270 institutional investors reported holding 23,882,659 shares of AdvanSix Inc. - Common Stock, par value $0.01 per share (ASIX). This represents 89% of the company’s total 26,877,129 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of AdvanSix Inc. - Common Stock, par value $0.01 per share (ASIX) together control 67% 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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 13% | 3,392,470 | -30% | 0% | $58,689,729 |
| VANGUARD GROUP INC | 6.4% | 1,706,709 | -14% | 0% | $29,526,066 |
| DIMENSIONAL FUND ADVISORS LP | 4.8% | 1,302,875 | -14% | 0% | $22,540,124 |
| AEGIS FINANCIAL CORP | 4.5% | 1,209,629 | 5% | $20,926,582 | |
| AMERICAN CENTURY COMPANIES INC | 3.8% | 1,021,114 | +5.5% | 0.01% | $17,665,272 |
| ALLIANCEBERNSTEIN L.P. | 3.5% | 943,913 | -0.48% | 0.01% | $16,329,695 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.6% | 711,634 | +24% | 0% | $12,311,268 |
| MILLENNIUM MANAGEMENT LLC | 2.5% | 663,537 | 0.01% | $11,479,190 | |
| STATE STREET CORP | 2.4% | 639,053 | -39% | 0% | $11,055,617 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.4% | 636,364 | +0.18% | 0% | $11,011,564 |
| Solas Capital Management, LLC | 2.3% | 615,445 | +18% | 6% | $10,647,199 |
| LSV ASSET MANAGEMENT | 2.1% | 569,479 | -8.5% | 0.02% | $9,852,000 |
| FMR LLC | 1.9% | 506,466 | +24% | 0% | $8,761,850 |
| JANE STREET GROUP, LLC | 1.9% | 505,934 | +1874% | 0.01% | $8,752,659 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.5% | 408,764 | +18% | 0% | $7,071,617 |
| TWO SIGMA INVESTMENTS, LP | 1.5% | 405,407 | +110% | 0.01% | $7,013,541 |
| GOLDMAN SACHS GROUP INC | 1.4% | 378,610 | +149% | 0% | $6,549,949 |
| Invenomic Capital Management LP | 1.2% | 326,227 | +4.4% | 0.27% | $5,643,727 |
| Qube Research & Technologies Ltd | 1.2% | 318,733 | +360% | 0.01% | $5,514,081 |
| DEPRINCE RACE & ZOLLO INC | 1.1% | 293,768 | +15% | 0.1% | $5,082,187 |
| Russell Investments Group, Ltd. | 1.1% | 293,409 | +16% | 0.01% | $5,075,973 |
| AQR CAPITAL MANAGEMENT LLC | 1.1% | 292,316 | +2.3% | 0% | $5,057,075 |
| D. E. Shaw & Co., Inc. | 0.99% | 266,547 | +159% | 0% | $4,611,263 |
| MORGAN STANLEY | 0.97% | 261,856 | -29% | 0% | $4,530,135 |
| DONALD SMITH & CO., INC. | 0.92% | 245,950 | +8.6% | 0.08% | $4,254,935 |
Institutional Holders of AdvanSix Inc. - Common Stock, par value $0.01 per share (ASIX) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 12,223,554 | $298,241,607 | -$25,249,838 | $24.40 | 188 |
| 2025 Q4 | 23,882,659 | $413,188,989 | -$11,642,775 | $17.30 | 270 |
| 2025 Q3 | 24,451,796 | $473,888,023 | -$4,379,348 | $19.38 | 270 |
| 2025 Q2 | 24,600,692 | $584,285,114 | +$17,042,510 | $23.75 | 275 |
| 2025 Q1 | 23,906,006 | $541,429,602 | -$832,461 | $22.65 | 273 |
| 2024 Q4 | 23,870,663 | $680,059,572 | +$11,581,149 | $28.49 | 276 |
| 2024 Q3 | 23,340,745 | $708,863,290 | +$15,078,839 | $30.38 | 274 |
| 2024 Q2 | 22,982,818 | $526,758,772 | -$330,153 | $22.92 | 252 |
| 2024 Q1 | 22,961,712 | $656,675,883 | -$2,367,404 | $28.60 | 268 |
| 2023 Q4 | 23,056,144 | $690,717,743 | +$5,137,306 | $29.96 | 276 |
| 2023 Q3 | 22,888,604 | $711,366,056 | -$18,678,459 | $31.08 | 278 |
| 2023 Q2 | 23,479,874 | $821,440,408 | -$883,447 | $34.98 | 283 |
| 2023 Q1 | 23,346,572 | $893,443,402 | +$20,035,877 | $38.27 | 300 |
| 2022 Q4 | 23,206,641 | $882,442,698 | +$6,930,588 | $38.02 | 299 |
| 2022 Q3 | 23,159,366 | $743,450,744 | -$8,594,513 | $32.10 | 244 |
| 2022 Q2 | 23,277,134 | $778,569,005 | -$21,941,829 | $33.44 | 257 |
| 2022 Q1 | 23,695,744 | $1,211,326,100 | +$35,911,573 | $51.09 | 276 |
| 2021 Q4 | 23,105,455 | $1,090,521,385 | -$41,188,447 | $47.25 | 288 |
| 2021 Q3 | 23,360,860 | $927,452,553 | +$21,410,528 | $39.75 | 239 |
| 2021 Q2 | 23,138,708 | $690,998,625 | +$390,812 | $29.86 | 211 |
| 2021 Q1 | 23,134,735 | $620,528,347 | -$19,468,164 | $26.82 | 188 |
| 2020 Q4 | 23,884,290 | $477,537,350 | +$4,734,085 | $19.99 | 162 |
| 2020 Q3 | 24,068,639 | $309,952,301 | -$2,324,595 | $12.88 | 158 |
| 2020 Q2 | 24,268,215 | $284,893,496 | +$10,980,338 | $11.74 | 164 |
| 2020 Q1 | 26,263 | $255,003 | -$26,071,116 | $22.30 | 10 |
| 2019 Q4 | 23,998,992 | $478,970,152 | +$5,893,158 | $19.96 | 194 |
| 2019 Q3 | 23,511,496 | $604,485,324 | -$11,474,008 | $25.72 | 205 |
| 2019 Q2 | 23,978,106 | $585,455,855 | -$1,916,287 | $24.43 | 216 |
| 2019 Q1 | 24,188,707 | $691,465,541 | +$2,755,988 | $28.57 | 247 |
| 2018 Q4 | 24,198,601 | $588,919,413 | -$15,120,883 | $24.34 | 242 |
| 2018 Q3 | 24,321,620 | $825,489,222 | -$818,822 | $33.95 | 281 |
| 2018 Q2 | 24,289,225 | $889,747,365 | +$13,188,597 | $36.63 | 293 |
| 2018 Q1 | 23,975,959 | $833,874,530 | +$3,265,284 | $34.78 | 297 |
| 2017 Q4 | 23,827,136 | $1,002,243,235 | +$16,288,659 | $42.07 | 313 |
| 2017 Q3 | 23,239,911 | $923,798,475 | -$18,340,559 | $39.75 | 294 |
| 2017 Q2 | 23,739,711 | $741,656,806 | +$63,034,650 | $31.24 | 284 |
| 2017 Q1 | 21,914,659 | $598,615,055 | +$109,755,874 | $27.32 | 269 |
| 2016 Q4 | 21,611,395 | $478,460,250 | +$461,918,795 | $22.14 | 293 |
| 2016 Q3 | 148,378 | $2,431,584 | +$2,431,584 | $16.25 | 20 |
| 2016 Q2 | 19,034 | $595,000 | $31.26 | 1 |