AdvanSix Inc.
DE ˙ DB ˙ US00773T1016
19,29 € ↑0,36 (1,90%)
2026-06-03
DEL PRIS
SecurityDE:960 / AdvanSix Inc.
InstitutionDonald Smith & Co., Inc.
Latest Disclosed Ownership227,980 shares
Latest Disclosed Value $ 5,562,712
Donald Smith & Co., Inc. reports 7.31% decrease in ownership of 960 / AdvanSix Inc.

On May 14, 2026 - Donald Smith & Co., Inc. filed a 13F-HR form disclosing ownership of 227,980 shares of AdvanSix Inc. (DE:960) valued at $4,741,984 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 245,950 shares of AdvanSix Inc.. This represents a change in shares of -7.31% during the quarter. The current value of the position is $4,397,734 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F ADVANSIX COM 00773T101 227,980 -17,970 -7.31 5,563 30.75 0.1001
2026-02-11 2025-12-31 13F ADVANSIX COM 00773T101 245,950 19,390 8.56 4,255 -3.10 0.0797
2025-11-13 2025-09-30 13F ADVANSIX COM 00773T101 226,560 34,817 18.16 4,391 -3.58 0.0876
2025-08-13 2025-06-30 13F ADVANSIX COM 00773T101 191,743 21,578 12.68 4,554 18.14 0.1072
2025-05-12 2025-03-31 13F ADVANSIX COM 00773T101 170,165 17 0.01 3,854 -20.49 0.0944
2025-02-12 2024-12-31 13F ADVANSIX COM 00773T101 170,148 -6,848 -3.87 4,848 -9.86 0.1159
2024-10-25 2024-09-30 13F ADVANSIX COM 00773T101 176,996 8,396 4.98 5,377 39.16 0.1269
2024-08-09 2024-06-30 13F ADVANSIX COM 00773T101 168,600 6,768 4.18 3,864 -16.51 0.0985
2024-05-10 2024-03-31 13F ADVANSIX COM 00773T101 161,832 21,932 15.68 4,628 10.43 0.1076
2024-02-05 2023-12-31 13F ADVANSIX COM 00773T101 139,900 139,900 4,191 0.1075
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.