AdvanSix Inc.
MX ˙ BMV ˙ US00773T1016
SecurityMX:ASIX / AdvanSix Inc.
InstitutionGeode Capital Management, Llc
Latest Disclosed Ownership652,248 shares
Latest Disclosed Value $ 15,919,326
Geode Capital Management, Llc reports 2.50% increase in ownership of ASIX / AdvanSix Inc.

On May 15, 2026 - Geode Capital Management, Llc filed a 13F-HR form disclosing ownership of 652,248 shares of AdvanSix Inc. (MX:ASIX) valued at $15,919,326 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 636,364 shares of AdvanSix Inc.. This represents a change in shares of 2.50% during the quarter.

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)
2026-05-15 2026-03-31 13F ADVANSIX COM 00773T101 652,248 15,884 2.50 15,919 44.57 0.0005
2026-02-09 2025-12-31 13F ADVANSIX COM 00773T101 636,364 1,164 0.18 11,012 -10.57 0.0004
2025-11-12 2025-09-30 13F ADVANSIX COM 00773T101 635,200 2,688 0.42 12,313 -18.04 0.0008
2025-08-08 2025-06-30 13F ADVANSIX COM 00773T101 632,512 11,880 1.91 15,023 6.84 0.0011
2025-05-13 2025-03-31 13F ADVANSIX COM 00773T101 620,632 18,329 3.04 14,061 -18.08 0.0011
2025-02-12 2024-12-31 13F ADVANSIX COM 00773T101 602,303 3,818 0.64 17,164 -5.62 0.0013
2024-11-12 2024-09-30 13F ADVANSIX COM 00773T101 598,485 8,903 1.51 18,186 34.55 0.0015
2024-08-09 2024-06-30 13F ADVANSIX COM 00773T101 589,582 12,403 2.15 13,517 -18.13 0.0012
2024-05-13 2024-03-31 13F ADVANSIX COM 00773T101 577,179 10,704 1.89 16,510 -2.73 0.0015
2024-02-13 2023-12-31 13F ADVANSIX COM 00773T101 566,475 17,763 3.24 16,974 -0.49 0.0018
2023-11-13 2023-09-30 13F ADVANSIX COM 00773T101 548,712 18,936 3.57 17,056 -7.96 0.0020
2023-08-11 2023-06-30 13F ADVANSIX COM 00773T101 529,776 18,021 3.52 18,532 -5.38 0.0022
2023-05-15 2023-03-31 13F ADVANSIX COM 00773T101 511,755 16,808 3.40 19,585 108,700.00 0.0025
2023-02-13 2022-12-31 13F ADVANSIX COM 00773T101 494,947 8,702 1.79 19 -99.88 0.0026
2022-11-14 2022-09-30 13F ADVANSIX COM 00773T101 486,245 3,773 0.78 15,608 -3.25 0.0024
2022-08-12 2022-06-30 13F ADVANSIX COM 00773T101 482,472 -448 -0.09 16,133 -34.61 0.0024
2022-05-13 2022-03-31 13F ADVANSIX COM 00773T101 482,920 11,615 2.46 24,672 10.79 0.0031
2022-02-11 2021-12-31 13F ADVANSIX COM 00773T101 471,305 268 0.06 22,269 18.94 0.0027
2021-11-12 2021-09-30 13F ADVANSIX COM 00773T101 471,037 12,978 2.83 18,723 36.89 0.0025
2021-08-13 2021-06-30 13F ADVANSIX COM 00773T101 458,059 9,325 2.08 13,677 13.64 0.0019
2021-05-12 2021-03-31 13F ADVANSIX COM 00773T101 448,734 41,300 10.14 12,035 47.78 0.0018
2021-02-12 2020-12-31 13F ADVANSIX COM 00773T101 407,434 8,568 2.15 8,144 58.54 0.0014
2020-11-13 2020-09-30 13F ADVANSIX COM 00773T101 398,866 -4,081 -1.01 5,137 8.60 0.0010
2020-08-13 2020-06-30 13F ADVANSIX COM 00773T101 402,947 5,406 1.36 4,730 24.74 0.0010
2020-05-14 2020-03-31 13F ADVANSIX COM 00773T101 397,541 -5,699 -1.41 3,792 -52.88 0.0010
2020-02-20 2019-12-31 13F/A-1 ADVANSIX COM 00773T101 403,240 38,701 10.62 8,048 -14.15 0.0017
2020-02-13 2019-12-31 13F ADVANSIX COM 00773T101 403,240 38,701 8,048 1,025.6470
2019-11-12 2019-09-30 13F ADVANSIX COM 00773T101 364,539 4,119 1.14 9,375 6.49 0.0022
2019-08-14 2019-06-30 13F ADVANSIX COM 00773T101 360,420 12,362 3.55 8,804 -11.46 0.0021
2019-05-14 2019-03-31 13F ADVANSIX COM 00773T101 348,058 29,710 9.33 9,944 28.34 0.0026
2019-03-06 2018-12-31 13F/A-1 ADVANSIX COM 00773T101 318,348 17,718 5.89 7,748 -24.08 0.0024
2019-02-13 2018-12-31 13F ADVANSIX COM 00773T101 318,348 17,718 7,748
2018-11-13 2018-09-30 13F ADVANSIX COM 00773T101 300,630 18,805 6.67 10,206 -1.13 0.0029
2018-08-14 2018-06-30 13F ADVANSIX COM 00773T101 281,825 25,445 9.92 10,323 15.78 0.0032
2018-05-15 2018-03-31 13F ADVANSIX COM 00773T101 256,380 4,785 1.90 8,916 -15.76 0.0029
2018-02-13 2017-12-31 13F ADVANSIX COM 00773T101 251,595 6,064 2.47 10,584 8.45 0.0036
2017-11-14 2017-09-30 13F ADVANSIX COM 00773T101 245,531 4,449 1.85 9,759 29.58 0.0036
2017-08-14 2017-06-30 13F ADVANSIX COM 00773T101 241,082 38,269 18.87 7,531 35.94 0.0030
2017-06-21 2017-03-31 13F/A-1 ADVANSIX COM 00773T101 202,813 20,659 11.34 5,540 37.40 0.0023
2017-05-12 2017-03-31 13F ADVANSIX COM 00773T101 202,813 5,540
2017-02-14 2016-12-31 13F ADVANSIX COM 00773T101 182,154 -88,307 -32.65 4,032 188.83 0.0019
2016-11-10 2016-09-30 13F ADVANSIX COM 00773T101 270,461 270,461 1,396 0.0007
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.