LyondellBasell Industries N.V.
US ˙ NYSE

SecurityLYB / LyondellBasell Industries N.V.
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership47,194 shares
Latest Disclosed Value $ 3,802
Natixis Advisors, L.p. reports 77.17% decrease in ownership of LYB / LyondellBasell Industries N.V.

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 47,194 shares of LyondellBasell Industries N.V. (US:LYB) valued at $3,801,949 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 206,754 shares of LyondellBasell Industries N.V.. This represents a change in shares of -77.17% during the quarter. The current value of the position is $3,176,156 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)
2026-05-13 2026-03-31 13F LYONDELLBASELL INDUSTRIES N V COM N53745100 47,194 -159,560 -77.17 4 -62.50 0.0053
2026-02-10 2025-12-31 13F LYONDELLBASELL INDUSTRIES N V COM N53745100 206,754 -23,640 -10.26 9 -27.27 0.0127
2025-11-13 2025-09-30 13F LYONDELLBASELL INDUSTRIES N V SHS - A - COM N53745100 230,394 155,286 206.75 11 175.00 0.0165
2025-08-13 2025-06-30 13F LYONDELLBASELL INDUSTRIES COM N53745100 75,108 9,651 14.74 4 0.00 0.0069
2025-05-08 2025-03-31 13F LYONDELLBASELL INDUSTRIES COM N53745100 65,457 5,571 9.30 5 0.00 0.0085
2025-02-10 2024-12-31 13F LYONDELLBASELL INDUSTRIES COM N53745100 59,886 -48,123 -44.55 4 -60.00 0.0083
2024-11-06 2024-09-30 13F LYONDELLBASELL INDUSTRIES COM N53745100 108,009 8,331 8.36 10 11.11 0.0202
2024-08-01 2024-06-30 13F LYONDELLBASELL INDUSTRIES N V COM N53745100 99,678 2,078 2.13 10 0.00 0.0207
2024-04-25 2024-03-31 13F LYONDELLBASELL INDUSTRIES N V SHS - A - COM N53745100 97,600 -64 -0.07 10 0.00 0.0230
2024-02-06 2023-12-31 13F LYONDELLBASELL INDUSTRIES N V COM N53745100 97,664 -3,970 -3.91 9 0.00 0.0244
2023-11-13 2023-09-30 13F LYONDELLBASELL INDUSTRIES N V SHS - A - COM N53745100 101,634 826 0.82 10 0.00 0.0294
2023-08-15 2023-06-30 13F LYONDELLBASELL INDUSTRIES N V SHS - A - COM N53745100 100,808 10,747 11.93 9 12.50 0.0286
2023-05-11 2023-03-31 13F LYONDELLBASELL NV CL-A COM N53745100 90,061 55 0.06 8 14.29 0.0291
2023-01-27 2022-12-31 13F LYONDELLBASELL COM N53745100 90,006 5,432 6.42 7 -99.89 0.0282
2022-11-14 2022-09-30 13F LYONDELLBASELL COM N53745100 84,574 3,501 4.32 6,366 -10.22 0.0269
2022-08-12 2022-06-30 13F LYONDELLBASELL COM N53745100 81,073 12,922 18.96 7,091 1.20 0.0312
2022-05-12 2022-03-31 13F LYONDELLBASELL COM N53745100 68,151 12,319 22.06 7,007 36.08 0.0267
2022-02-08 2021-12-31 13F LYONDELLBASELL COM N53745100 55,832 14,240 34.24 5,149 31.92 0.0197
2021-11-15 2021-09-30 13F LYONDELLBASELL NV CL-A SPONSORED ADR N53745100 41,592 -4,900 -10.54 3,903 -18.40 0.0161
2021-08-12 2021-06-30 13F LYONDELLBASELL COM N53745100 46,492 -15,163 -24.59 4,783 -25.43 0.0223
2021-05-05 2021-03-31 13F LYONDELLBASELL NV CL-A COM N53745100 61,655 75 0.12 6,414 13.64 0.0335
2021-02-12 2020-12-31 13F LYONDELLBASELL NV CL-A COM N53745100 61,580 -12,559 -16.94 5,644 8.00 0.0325
2020-11-12 2020-09-30 13F LYONDELLBASELL INDUSTRIES N V SHS - A - COM N53745100 74,139 8,308 12.62 5,226 20.78 0.0329
2020-08-11 2020-06-30 13F LYONDELLBASELL INDUSTRIES N V COM N53745100 65,831 11,429 21.01 4,327 60.26 0.0287
2020-04-27 2020-03-31 13F LYONDELLBASELL INDUSTRIES N COM N53745100 54,402 -13,444 -19.82 2,700 -57.88 0.0220
2020-02-10 2019-12-31 13F LYONDELLBASELL INDUSTRIES N V SHS - A - COM N53745100 67,846 31,083 84.55 6,410 94.89 0.0452
2019-11-12 2019-09-30 13F LYONDELLBASELL N V COM N53745100 36,763 3,385 10.14 3,289 14.40 0.0261
2019-08-12 2019-06-30 13F LYONDELLBASELL N V CL A N53745100 33,378 -722 -2.12 2,875 0.28 0.0235
2019-05-15 2019-03-31 13F/A-1 LYONDELLBASELL N V COM N53745100 34,100 2,582 8.19 2,867 9.39 0.0251
2019-05-15 2019-03-31 13F LYONDELLBASELL N V COM N53745100 34,100 2,582 2,867
2019-02-13 2018-12-31 13F/A-1 LYONDELLBASELL INDUSTRIES N V COM N53745100 31,518 4,385 16.16 2,621 -5.75 0.0259
2019-02-13 2018-12-31 13F LYONDELLBASELL INDUSTRIES N V COM N53745100 31,518 4,385 2,621
2018-11-13 2018-09-30 13F LYONDELLBASELL INDUSTRIE S N V SHS - A - N53745100 27,133 -126 -0.46 2,781 -7.11 0.0245
2018-08-14 2018-06-30 13F/A-1 LYONDELLBASELL INDUSTRIES N V COM N53745100 27,259 27,259 2,994 0.0286
2018-08-14 2018-06-30 13F LYONDELLBASELL INDUSTRIES N V COM N53745100 27,259 2,994
2017-07-27 2017-06-30 13F LYONDELLBASELL INDUSTRIES N V SHS - A - N53745100 0 -18,532 -100.00 0 -100.00
2017-05-12 2017-03-31 13F LYONDELLBASELL INDUSTRIES N V SHS - A - N53745100 18,532 674 3.77 1,690 10.31 0.0187
2017-02-07 2016-12-31 13F LYONDELLBASELL INDUSTRIES N V SHS - A - N53745100 17,858 -3,208 -15.23 1,532 -9.83 0.0184
2016-11-04 2016-09-30 13F LYONDELLBASELL INDUSTRIES N V SHS - A - COM N53745100 21,066 -2,683 -11.30 1,699 -3.85 0.0220
2016-08-01 2016-06-30 13F LYONDELLBASELL INDUSTRIES N V SHS - A - N53745100 23,749 -1,630 -6.42 1,767 -18.65 0.0244
2016-05-06 2016-03-31 13F LYONDELLBASELL INDUSTRIES N V SHS - A - N53745100 25,379 1,045 4.29 2,172 2.70 0.0325
2016-02-12 2015-12-31 13F LYONDELLBASELL INDUSTRIES N V COM N53745100 24,334 -2,390 -8.94 2,115 -5.03 0.0347
2015-11-12 2015-09-30 13F LYONDELLBASELL INDUSTRIES COM N53745100 26,724 -187 -0.69 2,227 -20.06 0.0386
2015-08-14 2015-06-30 13F LYONDELLBASELL INDUSTRIES N V COM N53745100 26,911 2,756 11.41 2,786 31.35 0.0473
2015-05-15 2015-03-31 13F LYONDELLBASELL INDUSTRIES COM N53745100 24,155 5,121 26.90 2,121 40.37 0.0372
2015-02-05 2014-12-31 13F LYONDELLBASELL INDUSTRIES N V COM N53745100 19,034 -1,924 -9.18 1,511 -33.64 0.0283
2014-11-03 2014-09-30 13F LYONDELLBASELL INDUSTRIES N V COM N53745100 20,958 1,584 8.18 2,277 20.35 0.0457
2014-08-13 2014-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 19,374 694 3.72 1,892 13.91 0.0271
2014-05-13 2014-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 18,680 -739 -3.81 1,661 6.54 0.0256
2014-02-12 2013-12-31 13F LYONDELLBASELL SHS - A - N53745100 19,419 10,597 120.12 1,559 141.33 0.0255
2013-10-30 2013-09-30 13F LYONDELLBASELL SHS - A - N53745100 8,822 761 9.44 646 20.75 0.0119
2013-07-19 2013-06-30 13F LYONDELLBASELL SHS - A - N53745100 8,061 8,061 535 0.0107
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.