AdvanSix Inc.
ASIX- Exchange
- NYSE
- Industry
- Plastic Materials, Synth Resins & Nonvulcan Elastomers
- SEC CIK
- 0001673985
No open-market purchases or sales by AdvanSix Inc. insiders were filed in the last 90 days; 256 institutions reported holding it in 13F filings for Q2 2026, worth $498.3M in total; no superinvestor holds it.
Holders of 5% or more of ASIX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of AdvanSix Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 17.00%4.54M shares | – | Apr 30, 20251 filing | Apr 30, 2025 | SEC |
| Victory Capital Management Inc | 13G/A | 8.12%2.18M shares | −1.13 ppfrom 9.25% | Nov 6, 20242 filings | Oct 30, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
4 Schedule 13D and 13G filings on AdvanSix Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 26, 20263:11 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Oct 30, 20259:57 AM ET | Victory Capital Management Inc | 13G/A | 8.12%2.18M shares | −1.13 ppfrom 9.25% | Sep 30, 2025 | SEC |
| Apr 30, 20259:58 AM ET | BlackRock, Inc. | 13G/A | 17.00%4.54M shares | – | Mar 31, 2025 | SEC |
| Nov 6, 20242:21 PM ET | Victory Capital Management Inc | 13G | 9.25%2.47M shares | New | Sep 30, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell AdvanSix Inc. shares.
No Form 144 notices for AdvanSix Inc. are on file.