Avient Corporation
US ˙ NYSE ˙ US05368V1061

SecurityAVNT / Avient Corporation
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership49,658 shares
Latest Disclosed Value $ 1,802,585
Renaissance Technologies Llc ownership in AVNT / Avient Corporation

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 49,658 shares of Avient Corporation (US:AVNT) valued at $1,802,585 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 0 shares of Avient Corporation. The current value of the position is $1,685,393 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 AVIENT COM 05368V106 49,658 49,658 1,803 0.0028
2026-02-12 2025-12-31 13F AVIENT COM 05368V106 0 -92,558 -100.00 0 -100.00
2025-11-13 2025-09-30 13F AVIENT COM 05368V106 92,558 92,558 3,050 0.0040
2025-08-13 2025-06-30 13F AVIENT COM 05368V106 0 -21,358 -100.00 0 -100.00
2025-05-14 2025-03-31 13F AVIENT COM 05368V106 21,358 21,358 794 0.0012
2025-02-13 2024-12-31 13F AVIENT COM 05368V106 0 -7,700 -100.00 0 -100.00
2024-11-13 2024-09-30 13F AVIENT COM 05368V106 7,700 -17,258 -69.15 387 -64.46 0.0006
2024-08-09 2024-06-30 13F AVIENT COM 05368V106 24,958 24,958 1,089 0.0018
2024-02-13 2023-12-31 13F AVIENT COM 05368V106 0 -56,558 -100.00 0 -100.00
2023-11-14 2023-09-30 13F AVIENT COM 05368V106 56,558 56,558 2 0.0034
2023-05-12 2023-03-31 13F AVIENT COM 05368V106 0 -106,258 -100.00 0 -100.00
2023-02-13 2022-12-31 13F AVIENT COM 05368V106 106,258 -309,000 -74.41 4 -99.98 0.0049
2022-11-14 2022-09-30 13F AVIENT COM 05368V106 415,258 291,600 235.81 12,582 153.87 0.0178
2022-08-12 2022-06-30 13F AVIENT COM 05368V106 123,658 11,200 9.96 4,956 -8.19 0.0059
2022-05-13 2022-03-31 13F AVIENT COM 05368V106 112,458 96,400 600.32 5,398 501.11 0.0063
2022-02-11 2021-12-31 13F AVIENT COM 05368V106 16,058 -208,000 -92.83 898 -91.35 0.0011
2021-11-12 2021-09-30 13F AVIENT COM 05368V106 224,058 21,100 10.40 10,385 4.09 0.0134
2021-08-13 2021-06-30 13F AVIENT COM 05368V106 202,958 174,083 602.88 9,977 630.92 0.0125
2021-05-13 2021-03-31 13F AVIENT COM 05368V106 28,875 -80,583 -73.62 1,365 -69.04 0.0017
2021-02-10 2020-12-31 13F AVIENT COM 05368V106 109,458 -46,800 -29.95 4,409 6.63 0.0048
2020-11-13 2020-09-30 13F AVIENT COM 05368V106 156,258 -69,300 -30.72 4,135 -30.10 0.0041
2020-08-13 2020-06-30 13F POLYONE COM 73179P106 225,558 85,700 61.28 5,916 122.99 0.0051
2020-05-14 2020-03-31 13F POLYONE COM 73179P106 139,858 -695,400 -83.26 2,653 -91.37 0.0026
2020-02-13 2019-12-31 13F POLYONE COM 73179P106 835,258 140,000 20.14 30,729 35.37 0.0236
2019-11-13 2019-09-30 13F POLYONE COM 73179P106 695,258 235,100 51.09 22,700 57.16 0.0192
2019-08-12 2019-06-30 13F POLYONE COM 73179P106 460,158 262,700 133.04 14,444 149.59 0.0127
2019-05-14 2019-03-31 13F POLYONE COM 73179P106 197,458 120,800 157.58 5,787 164.01 0.0053
2019-02-12 2018-12-31 13F POLYONE COM 73179P106 76,658 20,500 36.50 2,192 -10.71 0.0024
2018-11-13 2018-09-30 13F POLYONE COM 73179P106 56,158 -222,400 -79.84 2,455 -79.61 0.0025
2018-08-13 2018-06-30 13F/A-1 POLYONE COM 73179P106 278,558 -44,900 -13.88 12,039 -12.46 0.0131
2018-08-13 2018-06-30 13F POLYONE COM 73179P106 323,458 13,753
2018-05-14 2018-03-31 13F POLYONE COM 73179P106 323,458 -232,000 -41.77 13,753 -43.08 0.0150
2018-02-13 2017-12-31 13F POLYONE COM 73179P106 555,458 251,700 82.86 24,162 98.72 0.0266
2017-11-13 2017-09-30 13F POLYONE COM 73179P106 303,758 107,600 54.85 12,159 60.01 0.0143
2017-08-11 2017-06-30 13F POLYONE COM 73179P106 196,158 -55,200 -21.96 7,599 -11.32 0.0097
2017-05-12 2017-03-31 13F POLYONE COM 73179P106 251,358 177,400 239.87 8,569 261.56 0.0120
2017-02-13 2016-12-31 13F POLYONE COM 73179P106 73,958 -266,600 -78.28 2,370 -79.42 0.0037
2016-11-14 2016-09-30 13F POLYONE COM 73179P106 340,558 136,200 66.65 11,514 59.87 0.0204
2016-08-12 2016-06-30 13F POLYONE COM 73179P106 204,358 93,500 84.34 7,202 114.79 0.0137
2016-05-13 2016-03-31 13F POLYONE COM 73179P106 110,858 110,858 -45.75 3,353 -53.44 0.0064
2016-02-11 2015-12-31 13F POLYONE COM 73179P106 0 0 0 0.0000
2015-11-12 2015-09-30 13F POLYONE COM 73179P106 0 -273,658 -100.00 0 -100.00
2015-08-14 2015-06-30 13F POLYONE COM 73179P106 273,658 -67,600 -19.81 10,719 -15.90 0.0244
2015-05-13 2015-03-31 13F POLYONE COM 73179P106 341,258 96,100 39.20 12,746 37.14 0.0271
2015-02-13 2014-12-31 13F POLYONE COM 73179P106 245,158 -161,800 -39.76 9,294 -35.81 0.0224
2014-11-12 2014-09-30 13F POLYONE COM 73179P106 406,958 86,000 26.79 14,480 7.06 0.0396
2014-08-13 2014-06-30 13F POLYONE COM 73179P106 320,958 55,722 21.01 13,525 39.09 0.0315
2014-05-14 2014-03-31 13F POLYONE COM 73179P106 265,236 242,478 1,065.46 9,724 1,109.45 0.0233
2014-02-14 2013-12-31 13F POLYONE COM 73179P106 22,758 -20,800 -47.75 804 -39.91 0.0019
2013-11-13 2013-09-30 13F POLYONE COM 73179P106 43,558 -71,900 -62.27 1,338 -53.23 0.0032
2013-08-12 2013-06-30 13F POLYONE COM 73179P106 115,458 115,458 2,861 0.0075
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.