LyondellBasell Industries N.V.
US ˙ NYSE

SecurityLYB / LyondellBasell Industries N.V.
InstitutionKBC Group NV
Latest Disclosed Ownership52,150 shares
Latest Disclosed Value $ 4,201
KBC Group NV reports 5.56% decrease in ownership of LYB / LyondellBasell Industries N.V.

On May 7, 2026 - KBC Group NV filed a 13F-HR form disclosing ownership of 52,150 shares of LyondellBasell Industries N.V. (US:LYB) valued at $4,201,204 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 55,222 shares of LyondellBasell Industries N.V.. This represents a change in shares of -5.56% during the quarter. The current value of the position is $3,509,695 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)
2026-05-07 2026-03-31 13F LYONDELLBASELL INDUSTRIES SHS - A - N53745100 52,150 -3,072 -5.56 4 100.00 0.0054
2026-01-26 2025-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 55,222 32,118 139.01 2 100.00 0.0055
2026-01-20 2025-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 23,104 -462,283 -95.24 1 -96.43 0.0027
2025-08-08 2025-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 485,387 -68,379 -12.35 28 -26.32 0.0759
2025-04-25 2025-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 553,766 -72,925 -11.64 39 -17.39 0.1210
2025-01-22 2024-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 626,691 142,633 29.47 47 0.00 0.1282
2024-11-06 2024-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 484,058 108,928 29.04 46 31.43 0.1403
2024-07-17 2024-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 375,130 59,538 18.87 36 9.38 0.1084
2024-05-08 2024-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 315,592 63,524 25.20 32 39.13 0.1025
2024-02-13 2023-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 252,068 -4,251 -1.66 24 -4.17 0.0850
2024-02-15 2023-09-30 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 256,319 172,044 204.15 24 242.86 0.0991
2023-11-22 2023-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 84,275 0 8 0.0322
2024-02-15 2023-06-30 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 84,275 -5,619 -6.25 8 -12.50 0.0318
2023-07-28 2023-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 84,275 -5,619 8 0.0322
2024-02-14 2023-03-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 89,894 -4,963 -5.23 8 14.29 0.0358
2023-05-04 2023-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 89,894 -22,115 8 0.0398
2024-02-14 2022-12-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 94,857 -17,625 -15.67 8 -12.50 0.0382
2023-02-13 2022-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 112,009 -473 8 0.0000
2024-02-15 2022-09-30 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 112,482 32,369 40.40 8 14.29 0.0440
2022-11-08 2022-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 112,009 31,896 8,432 0.0441
2024-02-14 2022-06-30 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 80,113 -1,446 -1.77 7 -12.50 0.0350
2022-07-26 2022-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 79,771 -1,788 6,977 0.0351
2024-02-14 2022-03-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 81,559 54,386 200.15 8 300.00 0.0332
2022-05-06 2022-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 81,559 54,386 8,386 0.0310
2024-02-14 2021-12-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 27,173 -13,751 -33.60 3 -99.95 0.0083
2022-02-03 2021-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 27,173 -13,751 2,506 0.0078
2021-11-10 2021-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 40,924 -180 -0.44 3,841 -9.15 0.0141
2022-02-15 2021-06-30 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 41,104 -4,613 -10.09 4,228 -11.12 0.0152
2021-08-11 2021-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 41,104 -4,613 4,228 0.0152
2022-02-14 2021-03-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 45,717 3,671 8.73 4,757 -87.66 0.0193
2021-04-26 2021-03-31 13F LYONDELLBASELL INDU-CL A SHS - A - N53745100 45,717 3,671 4,757 0.0193
2022-02-14 2020-12-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 42,046 -89,055 -67.93 38,539 317.04 0.0181
2021-02-10 2020-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 42,046 -89,055 3,854 0.0177
2022-02-14 2020-09-30 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 131,101 56,575 75.91 9,241 88.67 0.0544
2020-10-28 2020-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 131,101 56,575 9,241 0.0547
2022-02-14 2020-06-30 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 74,526 12,193 19.56 4,898 58.36 0.0324
2020-08-10 2020-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 74,526 12,193 4,898 0.0328
2020-05-04 2020-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 62,333 -42,160 -40.35 3,093 -68.67 0.0259
2020-02-11 2019-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 104,493 -5,255 -4.79 9,872 0.54 0.0624
2019-11-07 2019-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 109,748 -109,480 -49.94 9,819 -48.00 0.0720
2019-08-08 2019-06-30 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 219,228 -36,106 -14.14 18,882 -12.05 0.1462
2019-07-30 2019-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 219,228 -222,083 18,882
2019-08-07 2019-03-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 255,334 103,483 68.15 21,468 70.00 0.1769
2019-05-10 2019-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 255,334 103,483 21,468
2019-01-31 2018-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 151,851 -5,456 -3.47 12,628 -21.69 0.1407
2018-11-14 2018-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 157,307 -66,196 -29.62 16,126 -34.32 0.1220
2018-08-03 2018-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 223,503 -33,904 -13.17 24,552 -9.75 0.2138
2018-08-03 2018-03-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 257,407 -8,945 -3.36 27,203 -7.42 0.2516
2018-05-09 2018-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 257,407 -8,945 27,203
2018-08-03 2017-12-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 266,352 16,203 6.48 29,384 18.59 0.2513
2018-02-07 2017-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 266,352 16,203 29,384
2017-11-13 2017-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 250,149 -159,336 -38.91 24,778 -28.30 0.2249
2017-08-04 2017-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 409,485 -73,750 -15.26 34,557 -21.58 0.3340
2017-05-10 2017-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 483,235 39,263 8.84 44,066 15.71 0.3978
2017-02-16 2016-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 443,972 94,576 27.07 38,084 35.14 0.3775
2016-11-03 2016-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 349,396 61,425 21.33 28,182 31.50 0.3329
2016-08-03 2016-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 287,971 142,463 97.91 21,431 72.10 0.3066
2016-05-11 2016-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 145,508 40,800 38.97 12,453 36.86 0.2069
2016-02-11 2015-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 104,708 -15,209 -12.68 9,099 -8.97 0.1676
2015-11-12 2015-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 119,917 -32,758 -21.46 9,996 -36.75 0.2011
2015-12-16 2015-06-30 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 152,675 36,067 30.93 15,805 54.38 0.2032
2015-07-31 2015-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 152,675 15,805
2015-12-16 2015-03-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 116,608 -539,139 -82.22 10,238 -80.33 0.1301
2015-04-30 2015-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 116,608 10,238
2015-12-15 2014-12-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 655,747 511,091 353.31 52,060 231.19 0.6200
2015-02-12 2014-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 655,747 52,060
2014-10-16 2014-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 144,656 -273,235 -65.38 15,719 -61.48 0.5486
2014-08-01 2014-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 417,891 -34,983 -7.72 40,807 1.31 0.4662
2014-04-30 2014-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 452,874 120,283 36.17 40,279 50.85 0.6361
2014-01-21 2013-12-31 13F LYONDELLBASELL INDS SHS - A - N53745100 332,591 88,831 36.44 26,701 49.58 0.4039
2013-11-06 2013-09-30 13F LYONDELLBASELL INDS SHS - A - N53745100 243,760 189,780 351.57 17,851 399.05 0.2873
2013-07-29 2013-06-30 13F LYONDELLBASELL INDS SHS - A - N53745100 53,980 53,980 3,577 0.0664
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.