LyondellBasell Industries N.V.
US ˙ NYSE

SecurityLYB / LyondellBasell Industries N.V.
InstitutionNbc Securities, Inc.
Latest Disclosed Ownership3,433 shares
Latest Disclosed Value $ 276,575
Nbc Securities, Inc. reports 11.79% increase in ownership of LYB / LyondellBasell Industries N.V.

On April 14, 2026 - Nbc Securities, Inc. filed a 13F-HR form disclosing ownership of 3,433 shares of LyondellBasell Industries N.V. (US:LYB) valued at $276,562 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 3,071 shares of LyondellBasell Industries N.V.. This represents a change in shares of 11.79% during the quarter. The current value of the position is $221,428 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)
2026-04-14 2026-03-31 13F LYONDELLBASELL INDUSTRIES COMMON STK N53745100 3,433 362 11.79 277 109.09 0.0204
2026-01-29 2025-12-31 13F LYONDELLBASELLINDUSTRIES COMMONSTK N53745100 3,071 -246 -7.42 133 -18.52 0.0100
2025-11-14 2025-09-30 13F LYONDELLBASELL INDUSTRIES COMMON STK N53745100 3,317 -15,253 -82.14 163 16,100.00 0.0125
2025-07-08 2025-06-30 13F LYONDELLBASELL INDUSTRIES N V CL A COMMON STK N53745100 18,570 890 5.03 1 0.00 0.0876
2025-04-09 2025-03-31 13F LYONDELLBASELL Stock N53745100 17,680 17,665 117,766.67 1 0.00 0.1061
2025-01-22 2024-12-31 13F LYONDELLBASELL Stock N53745100 15 -10,876 -99.86 1 0.00 0.1036
2024-10-15 2024-09-30 13F LYONDELLBASELL Stock N53745100 10,891 351 3.33 1 0.00 0.0877
2024-07-10 2024-06-30 13F LYONDELLBASELL Stock N53745100 10,540 1,318 14.29 1 0.0917
2024-04-05 2024-03-31 13F LYONDELLBASELL Stock N53745100 9,222 1,004 12.22 1 0.0885
2024-02-07 2023-12-31 13F LYONDELLBASELL Stock N53745100 8,218 133 1.65 1 0.0787
2023-11-03 2023-09-30 13F LYONDELLBASELL Stock N53745100 8,085 8,085 1 0.0840
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.