LyondellBasell Industries N.V.
US ˙ NYSE

SecurityLYB / LyondellBasell Industries N.V.
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership96,115 shares
Latest Disclosed Value $ 7,747,026
Advisor Group Holdings, Inc. ownership in LYB / LyondellBasell Industries N.V.

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 96,115 shares of LyondellBasell Industries N.V. (US:LYB) valued at $7,743,024 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 66,817 shares of LyondellBasell Industries N.V.. This represents a change in shares of 43.85% during the quarter. The current value of the position is $6,199,418 USD.

Advisor Group Holdings, Inc. has a history of taking positions in derivatives of the underlying security (LYB) in the form of stock options.

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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

LYB / LyondellBasell Industries N.V. Historical Put/Call Ratio
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 96,115 29,298 43.85 7,747 167.60 0.0066
2026-02-17 2025-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 66,817 -25,816 -27.87 2,896 -40.22 0.0042
2025-11-14 2025-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 92,633 5,027 5.74 4,843 -10.73 0.0068
2025-09-04 2025-06-30 13F/A-1 YONDELLBASELL INDUSTRIES N SHS - A - N53745100 87,606 46,618 113.74 5,425 87.78 0.0097
2025-08-13 2025-06-30 13F YONDELLBASELL INDUSTRIES N SHS - A - N53745100 99,754 58,766 7,157 0.0083
2025-05-12 2025-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 40,988 -47,015 -53.42 2,889 -54.94 0.0064
2025-06-06 2024-12-31 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 88,003 -16,452 -15.75 6,412 -36.01 0.0144
2025-02-07 2024-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 80,061 -24,394 7,006 0.0179
2024-11-13 2024-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 104,455 -834 -0.79 10,019 -0.55 0.0226
2024-08-13 2024-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 105,289 3,756 3.70 10,073 -3.01 0.0238
2024-05-10 2024-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 101,533 -71,692 -41.39 10,386 -36.98 0.0232
2024-02-12 2023-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 173,225 -51,893 -23.05 16,481 -22.74 0.0288
2023-11-13 2023-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 225,118 82,217 57.53 21,331 62.40 0.0315
2023-08-21 2023-06-30 13F/A-1 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 142,901 12,380 9.49 13,136 7.07 0.0236
2023-08-10 2023-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 707,228 576,707 12,571 0.0034
2023-05-12 2023-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 130,521 14,680 12.67 12,269 27.45 0.0231
2023-02-10 2022-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 115,841 6,815 6.25 9,627 17.16 0.0195
2022-11-14 2022-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 109,026 -1,188 -1.08 8,216 -14.82 0.0188
2022-08-10 2022-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 110,214 11,272 11.39 9,645 -59.47 0.0213
2022-05-04 2022-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 98,942 19,157 24.01 23,796 223.18 0.0462
2022-02-03 2021-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 79,785 28,992 57.08 7,363 54.30 0.0139
2021-11-05 2021-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 50,793 8,626 20.46 4,772 9.88 0.0099
2021-08-02 2021-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 42,167 -1,566 -3.58 4,343 -4.70 0.0094
2021-05-13 2021-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 43,733 -851 -1.91 4,557 11.53 0.0110
2021-02-10 2020-12-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 44,584 -16,842 -27.42 4,086 -5.55 0.0109
2020-11-12 2020-09-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 61,426 -738 -1.19 4,326 5.82 0.0129
2020-08-14 2020-06-30 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 62,164 2,978 5.03 4,088 37.41 0.0137
2020-05-18 2020-03-31 13F LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 59,186 59,186 2,975 0.0122
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2022-08-10 2022-06-30 13F LYONDELLBASELL INDUSTRIES N PUT SHS - A - Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-04 2022-03-31 13F LYONDELLBASELL INDUSTRIES N PUT SHS - A - Put 12 1 n/a n/a n/a
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.