LyondellBasell Industries N.V.
US ˙ NYSE

SecurityLYB / LyondellBasell Industries N.V.
InstitutionOak Thistle LLC
Latest Disclosed Ownership47,440 shares
Latest Disclosed Value $ 3,821,766
Oak Thistle LLC reports 23.87% increase in ownership of LYB / LyondellBasell Industries N.V.

On April 10, 2026 - Oak Thistle LLC filed a 13F-HR form disclosing ownership of 47,440 shares of LyondellBasell Industries N.V. (US:LYB) valued at $3,821,766 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 38,297 shares of LyondellBasell Industries N.V.. This represents a change in shares of 23.87% during the quarter. The current value of the position is $3,059,880 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)
2026-04-10 2026-03-31 13F LYONDELLBASELL INDUSTRIES SHS - A - N53745100 47,440 9,143 23.87 3,822 130.46 0.3710
2026-01-21 2025-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 38,297 27,411 251.80 1,658 211.07 0.2303
2025-10-07 2025-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 10,886 10,886 534 0.0814
2025-08-08 2025-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 0 -25,307 -100.00 0 -100.00
2025-05-06 2025-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 25,307 25,307 1,782 0.3587
2025-01-14 2024-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 0 -4,627 -100.00 0 -100.00
2024-11-12 2024-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 4,627 4,627 444 0.1443
2024-08-06 2024-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 0 -2,930 -100.00 0 -100.00
2024-04-18 2024-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 2,930 -12,069 -80.47 300 -79.03 0.2690
2024-01-22 2023-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 14,999 14,999 1,426 0.4098
2023-10-18 2023-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 0 -3,375 -100.00 0 -100.00
2023-07-26 2023-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 3,375 3,375 310 0.1636
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.