LyondellBasell Industries N.V.
US ˙ NYSE

SecurityLYB / LyondellBasell Industries N.V.
InstitutionQuarry LP
Latest Disclosed Ownership1,687 shares
Latest Disclosed Value $ 135,905
Quarry LP reports 3.87% decrease in ownership of LYB / LyondellBasell Industries N.V.

On May 15, 2026 - Quarry LP filed a 13F-HR form disclosing ownership of 1,687 shares of LyondellBasell Industries N.V. (US:LYB) valued at $135,905 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,755 shares of LyondellBasell Industries N.V.. This represents a change in shares of -3.87% during the quarter. The current value of the position is $113,535 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)
2026-05-15 2026-03-31 13F LYONDELLBASELL INDUSTRIES SHS - A - N53745100 1,687 -68 -3.87 136 80.00 0.0244
2026-02-13 2025-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 1,755 1,120 176.38 76 141.94 0.0119
2025-11-14 2025-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 635 635 31 0.0068
2025-08-14 2025-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 0 -2,888 -100.00 0 -100.00
2025-05-15 2025-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 2,888 -23,807 -89.18 203 -89.76 0.0441
2025-02-14 2024-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 26,695 7,794 41.24 1,983 9.38 0.2784
2024-11-14 2024-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 18,901 1,577 9.10 1,813 9.35 0.4556
2024-08-16 2024-06-30 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 17,324 6,940 66.83 1,657 56.03 0.4767
2024-08-14 2024-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 17,324 6,940 1,657 0.4747
2024-05-15 2024-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 10,384 6,128 143.98 1,062 162.87 0.2030
2024-02-20 2023-12-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 4,256 4,256 405 0.0625
2024-02-14 2023-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 4,256 4,256 405 0.0584
2023-11-14 2023-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 0 -330 -100.00 0 -100.00
2023-08-14 2023-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 330 242 275.00 30 275.00 0.0099
2023-05-15 2023-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 88 88 8 0.0018
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.