LyondellBasell Industries N.V.
US ˙ NYSE

SecurityLYB / LyondellBasell Industries N.V.
InstitutionBailard, Inc.
Latest Disclosed Ownership25,063 shares
Latest Disclosed Value $ 2,019,075
Bailard, Inc. reports 0.54% decrease in ownership of LYB / LyondellBasell Industries N.V.

On May 11, 2026 - Bailard, Inc. filed a 13F-HR form disclosing ownership of 25,063 shares of LyondellBasell Industries N.V. (US:LYB) valued at $2,019,075 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 25,200 shares of LyondellBasell Industries N.V.. This represents a change in shares of -0.54% during the quarter. The current value of the position is $1,686,740 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)
2026-05-11 2026-03-31 13F LYONDELLBASELL INDUSTRIES SHS - A - N53745100 25,063 -137 -0.54 2,019 85.06 0.0464
2026-02-04 2025-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 25,200 2,476 10.90 1,091 -2.06 0.0242
2025-10-30 2025-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 22,724 12,424 120.62 1,114 87.23 0.0242
2025-08-08 2025-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 10,300 103 1.01 596 -17.02 0.0139
2025-05-02 2025-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 10,197 1,229 13.70 718 7.66 0.0185
2025-02-05 2024-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 8,968 367 4.27 666 -19.17 0.0170
2024-10-30 2024-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 8,601 641 8.05 825 8.28 0.0215
2024-07-25 2024-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 7,960 -79 -0.98 761 -7.42 0.0210
2024-05-08 2024-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 8,039 -203 -2.46 822 4.98 0.0227
2024-02-02 2023-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 8,242 8,242 784 0.0232
2019-02-05 2018-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 0 -3,646 -100.00 0 -100.00
2018-11-13 2018-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 3,646 0 0.00 374 -6.73 0.0219
2018-08-08 2018-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 3,646 531 17.05 401 21.88 0.0239
2018-05-07 2018-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 3,115 3,115 329 0.0210
2018-01-29 2015-03-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 0 -24,262 -100.00 0 -100.00
2018-01-29 2014-12-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 24,262 175 0.73 1,926 -26.40 0.2726
2015-01-26 2014-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 24,262 175 1,926
2014-10-21 2014-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 24,087 -857 -3.44 2,617 7.43 0.4015
2014-07-30 2014-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 24,944 345 1.40 2,436 11.33 0.3747
2014-04-30 2014-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 24,599 53 0.22 2,188 11.18 0.3470
2014-01-28 2013-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 24,546 1,057 4.50 1,968 14.42 0.3173
2013-10-28 2013-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 23,489 23,489 1,720 0.3267
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.