Latest Period
Q1 2026
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
262
Shares (Excl. Options)
23,702,374
Price
$24.40
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- Security type / class
- Equity / Common Stock, par value $0.01 per share
- Symbol
- ASIX on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 23,702,374
- Total 13F value
- $572,145,461
- Portfolio coverage rank
- 0%
- Share change
- -139,226
- Value change
- +$4,771,589
- Number of holders
- 262
- Shares outstanding
- 26,877,129
- SEC-reported price per share
- $20.32
- Insider filing price
- $20.32
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ASIX - AdvanSix Inc. - Common Stock, par value $0.01 per share is tracked under CUSIP 00773T101.
- 262 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 271 to 262 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $413,189,768 to $572,145,461.
Research use
- 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.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 262 institutions filings for Q1 2026.
Security key
00773T101
Latest holder period
Q1 2026
13F holders
262
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
ASIX full holder history
AdvanSix Inc. SEC filings
AdvanSix Inc. company facts
AdvanSix Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 00773T101:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
ASIX
| 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 Mar 2026, 262 institutional investors reported holding 23,702,374 shares of AdvanSix Inc. - Common Stock, par value $0.01 per share (ASIX). This represents 88% of the company’s total 26,877,129 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
64%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.5% | 2,283,935 | -33% | 0% | $55,727,999 |
| DIMENSIONAL FUND ADVISORS LP | 4.9% | 1,311,006 | +0.62% | 0.01% | $31,988,371 |
| AEGIS FINANCIAL CORP | 4.5% | 1,209,629 | 0% | 5.1% | $29,514,948 |
| AMERICAN CENTURY COMPANIES INC | 4.2% | 1,126,637 | +10% | 0.01% | $27,489,943 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.2% | 1,123,457 | 0% | 0% | $27,412,351 |
| ALLIANCEBERNSTEIN L.P. | 3.2% | 870,976 | -7.7% | 0% | $15,067,885 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.7% | 728,292 | +78% | 0.01% | $17,770,325 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.6% | 696,362 | -2.1% | 0% | $16,991,233 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.4% | 652,248 | +2.5% | 0% | $15,919,326 |
| AQR CAPITAL MANAGEMENT LLC | 2.4% | 638,571 | +118% | 0.01% | $15,581,123 |
| CastleKnight Management LP | 2.4% | 631,781 | 0.72% | $15,415,456 | |
| TWO SIGMA INVESTMENTS, LP | 2.3% | 612,694 | +51% | 0.01% | $14,949,734 |
| FMR LLC | 2.3% | 608,289 | +20% | 0% | $14,842,253 |
| STATE STREET CORP | 2.1% | 566,641 | -11% | 0% | $13,826,040 |
| LSV ASSET MANAGEMENT | 2% | 550,679 | -3.3% | 0.03% | $13,437,000 |
| Solas Capital Management, LLC | 1.9% | 517,029 | -16% | 7.3% | $12,615,508 |
| GOLDMAN SACHS GROUP INC | 1.8% | 490,382 | +30% | 0% | $11,965,318 |
| JANE STREET GROUP, LLC | 1.5% | 405,355 | -20% | 0.01% | $9,890,661 |
| MORGAN STANLEY | 1.5% | 402,341 | +54% | 0% | $9,817,146 |
| Russell Investments Group, Ltd. | 1.2% | 329,879 | +12% | 0.01% | $8,049,082 |
| Invenomic Capital Management LP | 1.2% | 313,549 | -3.9% | 0.35% | $7,650,596 |
| Lloyd Harbor Capital Management, LLC | 1.1% | 290,000 | +287% | 3.7% | $7,076,000 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.1% | 286,349 | 0% | 0% | $6,986,916 |
| Qube Research & Technologies Ltd | 1% | 281,575 | -12% | 0.01% | $6,870,430 |
| DEPRINCE RACE & ZOLLO INC | 1% | 275,482 | -6.2% | 0.13% | $6,721,761 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
40
Latest
Q1 2026
Rows shown
1-25 of 40
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 23,702,374 | $572,145,461 | +$4,771,589 | $24.40 | 262 |
| 2025 Q4 | 23,882,704 | $413,189,768 | -$11,648,817 | $17.30 | 271 |
| 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 |