LyondellBasell Industries (LYB)

LyondellBasell Industries on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials and insider trades. Listed on NYSE, classified by the SEC as industrial organic chemicals.

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12.4M

Short interest

settlement 2026-09-30

3.3

Days to cover

-0.8 days vs prior

54.5%

Short share of volume

2026-10-09

103,071

Fails to deliver

settlement 2026-09-14

Insider flow, 90 days

0 buys, 0 sells

As of 2026-10-09.

Short interest

FINRA, twice a month. The newest 24 settlements in the table, 48 in the chart. JSON

As of 30 September 2026, short interest in LYB is 12,444,912 shares, down 1,505,831 shares over the last month. Over the last 48 readings it ranged from 3,797,181 shares (15 October 2024) to 22,418,381 shares (28 November 2025). At the reported average volume of 3.8M shares a day that is 3.3 days to cover.

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Settlement	Shares short	Change	Avg daily volume	Days to cover
2026-09-30	12,444,912	-6.8%	3,829,545	3.25
2026-09-15	13,350,742	-4.3%	3,298,981	4.05
2026-08-31	13,950,743	+10.5%	3,683,459	3.79
2026-08-14	12,625,759	+2.3%	4,357,909	2.90
2026-07-31	12,337,210	-1.5%	4,579,314	2.69
2026-07-15	12,528,631	-2.8%	5,616,575	2.23
2026-06-30	12,890,440	-7.3%	5,749,145	2.24
2026-06-15	13,913,210	+22.2%	5,226,265	2.66
2026-05-29	11,381,669	+10.4%	4,733,481	2.40
2026-05-15	10,307,660	-8.3%	5,805,760	1.78
2026-04-30	11,239,813	-8.6%	6,866,764	1.64
2026-04-15	12,293,886	-5.7%	7,776,621	1.58
2026-03-31	13,041,765	-26.2%	8,823,378	1.48
2026-03-13	17,662,343	-18.9%	12,209,409	1.45
2026-02-27	21,771,403	+7.6%	6,464,235	3.37
2026-02-13	20,237,529	-6.3%	7,009,440	2.89
2026-01-30	21,586,765	-2.4%	6,804,960	3.17
2026-01-15	22,121,060	+5.3%	6,205,183	3.56
2025-12-31	21,011,094	+1.9%	4,704,801	4.47
2025-12-15	20,629,463	-8.0%	6,473,006	3.19
2025-11-28	22,418,381	+10.4%	5,084,743	4.41
2025-11-14	20,312,715	+11.3%	5,626,090	3.61
2025-10-31	18,257,072	+3.3%	4,982,812	3.66
2025-10-15	17,670,564	+21.8%	4,122,730	4.29

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 9 October 2026, the short share of LYB volume is 54.5%, down 8.8 points over the last five sessions. Over the last 30 readings it ranged from 43.5% (6 October 2026) to 78.1% (11 September 2026). The latest reading is 4.0 points below the 30-session average of 58.6%, on 899K shares reported.

Date	Short volume	Total volume	Short share	Exempt
2026-10-09	490K	899K	54.5%	527
2026-10-08	928K	1.4M	67.6%	954
2026-10-07	387K	849K	45.6%	4,686
2026-10-06	515K	1.2M	43.5%	697
2026-10-05	592K	1.0M	57.0%	2,474
2026-10-02	696K	1.1M	63.3%	2,447
2026-10-01	840K	1.4M	62.2%	261
2026-09-30	419K	864K	48.5%	65
2026-09-29	574K	1.1M	51.6%	1,194
2026-09-28	606K	1.1M	57.1%	1,188
2026-09-25	894K	1.4M	63.8%	27
2026-09-24	669K	986K	67.9%	1,160
2026-09-23	554K	931K	59.5%	710
2026-09-22	716K	1.3M	55.8%	252
2026-09-21	574K	1.1M	50.7%	547
2026-09-18	668K	1.1M	61.1%	101
2026-09-17	488K	732K	66.6%	1,128
2026-09-16	612K	1.2M	53.0%	46
2026-09-15	750K	1.1M	69.9%	977
2026-09-14	572K	910K	62.8%	1,393
2026-09-11	847K	1.1M	78.1%	0
2026-09-10	658K	1.1M	60.4%	10
2026-09-09	399K	904K	44.1%	10
2026-09-08	909K	1.5M	61.9%	205
2026-09-04	587K	946K	62.1%	50
2026-09-03	408K	810K	50.4%	0
2026-09-02	578K	974K	59.4%	0
2026-09-01	549K	842K	65.2%	119
2026-08-31	436K	793K	55.0%	0
2026-08-28	424K	732K	57.9%	1,179

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 14 September 2026, the fails-to-deliver balance in LYB is 103,071 shares, up 100,768 shares over the last settlement date. Over the last 30 readings it ranged from 5 shares (15 May 2026) to 103,071 shares (14 September 2026). The latest reading sits at the top of that range.

Settlement	Shares failed	Price	Value
2026-09-14	103,071	$63.69	$6.6M
2026-09-01	2,303	$65.08	$150K
2026-08-24	9,229	$67.53	$623K
2026-08-12	511	$63.98	$33K
2026-08-07	102	$61.44	$6K
2026-07-31	1,524	$60.44	$92K
2026-07-09	90	$55.72	$5K
2026-07-08	1,708	$54.60	$93K
2026-07-07	3,820	$52.97	$202K
2026-07-06	58	$53.36	$3K
2026-07-01	30,252	$52.65	$1.6M
2026-06-22	6,300	$60.07	$378K
2026-06-15	36,370	$64.58	$2.3M
2026-06-01	500	$66.65	$33K
2026-05-29	77	$68.35	$5K
2026-05-18	5,817	$75.06	$437K
2026-05-15	5	$73.27	$366
2026-05-07	2,559	$73.48	$188K
2026-05-06	3,521	$77.76	$274K
2026-04-21	115	$68.58	$8K
2026-04-20	200	$66.27	$13K
2026-04-16	4,071	$73.13	$298K
2026-04-15	45	$73.25	$3K
2026-04-14	121	$75.51	$9K
2026-04-10	480	$72.27	$35K
2026-04-09	45,471	$74.22	$3.4M
2026-04-08	309	$80.26	$25K
2026-04-07	3,138	$78.62	$247K
2026-04-06	245	$79.60	$20K
2026-03-25	481	$76.01	$37K

Insider trades

SEC Form 4, newest first, 50 of 100 shown. JSON

No open-market insider trades were reported for LYB in the last 90 days. The most recent filings are listed below. Latest filing: Karlin Bridget E (Director) on 2026-09-30.

Date	Insider	Title	Type	Shares	Price	Value	Owned after
2026-09-30	Karlin Bridget E	Director	Tax withholding	194	$57.47	$11K	8K
2026-09-30	Karlin Bridget E	Director	Grant	781	$0.00	$0	8K
2026-09-30	KAMSKY VIRGINIA A	Director	Tax withholding	139	$57.47	$8K	11K
2026-09-30	KAMSKY VIRGINIA A	Director	Grant	720	$0.00	$0	11K
2026-06-30	Karlin Bridget E	Director	Tax withholding	73	$52.65	$4K	7K
2026-06-30	Karlin Bridget E	Director	Grant	615	$0.00	$0	7K
2026-06-30	KAMSKY VIRGINIA A	Director	Tax withholding	100	$52.65	$5K	10K
2026-06-30	KAMSKY VIRGINIA A	Director	Grant	561	$0.00	$0	10K
2026-05-22	Manifold Albert Jude	Director	Tax withholding	689	$69.72	$48K	15K
2026-05-22	Karlin Bridget E	Director	Tax withholding	521	$69.72	$36K	7K
2026-05-22	KAMSKY VIRGINIA A	Director	Tax withholding	593	$69.72	$41K	10K
2026-05-22	Hanley Michael Sean	Director	Tax withholding	540	$69.72	$38K	24K
2026-05-22	Griffin Rita E	Director	Tax withholding	639	$69.72	$45K	7K
2026-05-22	FARLEY CLAIRE S	Director	Tax withholding	565	$69.72	$39K	26K
2026-05-22	Dudley Robert W.	Director	Tax withholding	708	$69.72	$49K	10K
2026-05-22	CHASE ANTHONY R	Director	Tax withholding	540	$69.72	$38K	14K
2026-05-22	Buchanan Robin W.T.	Director	Tax withholding	1K	$69.72	$87K	22K
2026-05-22	Benet Lincoln E	Director	Tax withholding	1K	$69.72	$98K	13K
2026-05-22	AIGRAIN JACQUES	Director	Tax withholding	575	$69.72	$40K	38K
2026-05-21	Manifold Albert Jude	Director	Grant	2K	$0.00	$0	16K
2026-05-21	Karlin Bridget E	Director	Grant	2K	$0.00	$0	7K
2026-05-21	KAMSKY VIRGINIA A	Director	Grant	2K	$0.00	$0	10K
2026-05-21	Hanley Michael Sean	Director	Grant	2K	$0.00	$0	24K
2026-05-21	Griffin Rita E	Director	Grant	2K	$0.00	$0	8K
2026-05-21	FARLEY CLAIRE S	Director	Grant	2K	$0.00	$0	27K
2026-05-21	Dudley Robert W.	Director	Grant	2K	$0.00	$0	11K
2026-05-21	CHASE ANTHONY R	Director	Grant	2K	$0.00	$0	14K
2026-05-21	Buchanan Robin W.T.	Director	Grant	2K	$0.00	$0	23K
2026-05-21	Benet Lincoln E	Director	Grant	2K	$0.00	$0	15K
2026-05-21	AIGRAIN JACQUES	Director	Grant	4K	$0.00	$0	38K
2026-05-13	Kaplan Jeffrey A	EVP, Chief PC, Leg & Corp Ofc	Sell	10K	$74.16	$742K	97K
2026-04-15	Izquierdo Sabido Agustin	EVP & Chief Financial Officer	Tax withholding	45	$73.13	$3K	33K
2026-04-15	Hayes Matthew D	SVP & CAO	Tax withholding	40	$73.13	$3K	9K
2026-03-31	Karlin Bridget E	Director	Tax withholding	111	$80.56	$9K	5K
2026-03-31	Karlin Bridget E	Director	Grant	708	$0.00	$0	5K
2026-03-31	KAMSKY VIRGINIA A	Director	Tax withholding	142	$80.56	$11K	8K
2026-03-31	KAMSKY VIRGINIA A	Director	Grant	646	$0.00	$0	8K
2026-03-09	Blavatnik Len	TenPercentOwner	Sell	414	$68.13	$28K	765K
2026-03-09	Blavatnik Len	TenPercentOwner	Sell	115K	$68.90	$7.9M	5.3M
2026-03-09	Blavatnik Len	TenPercentOwner	Sell	251	$68.90	$17K	765K
2026-03-09	Blavatnik Len	TenPercentOwner	Gift	465K	$0.00	$0	1.0M
2026-03-09	Blavatnik Len	TenPercentOwner	Sell	81K	$67.03	$5.4M	5.6M
2026-03-09	Blavatnik Len	TenPercentOwner	Sell	177	$67.03	$12K	766K
2026-03-09	Blavatnik Len	TenPercentOwner	Sell	189K	$68.13	$12.9M	5.4M
2026-03-09	AI INVESTMENTS HOLDINGS LLC	10% owner	Sell	251	$68.90	$17K	765K
2026-03-09	AI INVESTMENTS HOLDINGS LLC	10% owner	Sell	115K	$68.90	$7.9M	5.3M
2026-03-09	AI INVESTMENTS HOLDINGS LLC	10% owner	Sell	414	$68.13	$28K	765K
2026-03-09	AI INVESTMENTS HOLDINGS LLC	10% owner	Sell	189K	$68.13	$12.9M	5.4M
2026-03-09	AI INVESTMENTS HOLDINGS LLC	10% owner	Sell	177	$67.03	$12K	766K
2026-03-09	AI INVESTMENTS HOLDINGS LLC	10% owner	Sell	81K	$67.03	$5.4M	5.6M

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

Planned sales (Form 144)

Newest first. JSON

3 Form 144 notices on file for LYB worth $26.5M at the prices reported; 0 in the last 90 days worth $0. Latest: JEFFREY KAPLAN filed on 2026-05-13 to sell 10,000 shares ($742K) from 2026-05-13.

Filed	Seller	Shares	Market value	Of outstanding	Sale from	Broker
2026-05-13	JEFFREY KAPLANOfficer	10K	$742K	0.003%	2026-05-13	Morgan Stanley Smith Barney LLC Executive Financial Services
2026-03-09	AI Investments Holdings LLCAffiliate of a 10% stockholder	842	$56K	0.000%	2026-03-09	Tourmaline Partners, LLC
2026-03-09	AI Chemical Holdings LLCAffiliate of a 10% stockholder	385K	$25.7M	0.119%	2026-03-09	Tourmaline Partners, LLC

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

1 holder reports 5% or more of LYB in its latest filing, on Schedule 13G (passive). The holder is Vanguard Capital Management at 6.0% of the class (19,344,417 shares), filed 2026-04-30 for an event on 2026-03-31.

Filed	Form	Holder	Shares	Of class	Event
2026-08-13	13G/Ano. 1	Dodge & Coxinvestment adviser	800	0.0%	2026-06-30
2026-04-30	13G	Vanguard Capital Managementinvestment adviser	19.3M	6.0%	2026-03-31
2026-03-27	13G/Ano. 9	The Vanguard Groupinvestment adviser	0	0.0%	2026-03-13

13F holders

Tracked managers holding LYB at their latest 13F. JSON

7 of the 30 tracked managers held LYB at their latest 13F, $808.9M in total at quarter-end prices. AQR Capital Management is the largest at $485.7M (0.2% of its portfolio) as of 2026-06-30. Over the prior quarter 6 added shares and 1 cut.

Fund	Quarter	Shares	Value	Of portfolio	Change in shares
AQR Capital Management	2026-06-30	9.2M	$485.7M	0.17%	+5.0M
Citadel Advisors	2026-06-30	2.4M	$128.0M	0.01%	+927K
Two Sigma Investments	2026-06-30	1.6M	$84.7M	0.06%	new
D. E. Shaw & Co.	2026-06-30	990K	$52.1M	0.02%	+908K
Point72 Asset Management	2026-06-30	516K	$27.2M	0.03%	new
Millennium Management	2026-06-30	439K	$23.1M	0.01%	-1.9M
Bridgewater Associates	2026-06-30	153K	$8.0M	0.03%	+145K

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

Financials

SEC XBRL, as filed. JSON

In Q2 FY 2026 (quarter ended 2026-06-30) LyondellBasell Industries reported revenue of $9.18B, up 19.8% from the same quarter a year earlier (1.71 diluted EPS). In FY 2025 it generated $2.26B of operating cash flow and spent $201.0M on buybacks and $1.76B on dividends.

Cash: $2.63B
Equity: $10.67B
Total assets: $34.48B
Shares outstanding: 323,037,952

Quarterly, last 8 quarters

Quarter	Period end	Revenue	Net income	Margin	Diluted EPS
Q2 FY 2026	2026-06-30	$9.18B	n/a	n/a	1.71
Q1 FY 2026	2026-03-31	$7.20B	n/a	n/a	0.38
Q4 FY 2025derived	2025-12-31	$7.09B	n/a	n/a	n/a
Q3 FY 2025	2025-09-30	$7.73B	n/a	n/a	-2.77
Q2 FY 2025	2025-06-30	$7.66B	n/a	n/a	0.34
Q1 FY 2025	2025-03-31	$7.68B	n/a	n/a	0.54
Q4 FY 2024derived	2024-12-31	$7.81B	n/a	n/a	n/a
Q3 FY 2024	2024-09-30	$8.60B	n/a	n/a	1.75

Fiscal years, with buybacks and dividends

Fiscal year	Ends	Revenue	Net income	Operating cash flow	Capex	Buybacks	Dividends
FY 2025	2025-12-31	$30.15B	-$738.0M	$2.26B	$1.88B	$201.0M	$1.76B
FY 2024	2024-12-31	$33.39B	$1.37B	$3.82B	$1.84B	$195.0M	$1.72B
FY 2023	2023-12-31	$33.34B	$2.12B	$4.94B	$1.53B	$211.0M	$1.61B
FY 2022	2022-12-31	$50.45B	$3.89B	$6.12B	$1.89B	$420.0M	$3.25B
FY 2021	2021-12-31	$46.17B	$5.62B	$7.70B	$1.96B	$463.0M	$1.49B

Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-29 from the cover page.

What this page is

LyondellBasell Industries in the regulatory record

Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.

Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.

This page follows LyondellBasell Industries (LYB), SEC CIK 1489393, listed on NYSE, classified by the SEC as industrial organic chemicals. The cross-market tables live on the short interest and insider transactions hubs.

Source and updates

Short interest: FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
Daily short volume: FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-09.JSON and CSV
Fails to deliver: SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-14.JSON and CSV
Planned sales: SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-05-13.JSON and CSV
Large holders: SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-13.JSON and CSV
13F holders: SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Financials: SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
Insider trades: SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-09-30.JSON and CSV
Company record: EDGAR filing index for CIK 1489393Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits: 10 requests a minute without a key, 30 with a free key from a free account.

How to read it

Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Other companies the SEC classifies as industrial organic chemicals

Other company pages

Datasets

Frequently Asked Questions

How much of LYB is sold short?

12,444,912 shares were held short at the 2026-09-30 settlement, 3.3 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.

What is LYB's daily short volume?

On 2026-10-09, 489,871 of the 898,552 LYB shares reported to FINRA were sold short, 54.5% of the day's reported volume. Short volume is a flow for one day, not a position.

Does LYB have fails to deliver?

The SEC's latest file shows 103,071 LYB shares failed to deliver at settlement 2026-09-14. Fails are reported per settlement date and published twice a month with a lag.

Are LYB insiders buying or selling?

No open-market insider trades were reported for LYB in the last 90 days. The most recent filings are listed below. Latest filing: Karlin Bridget E (Director) on 2026-09-30.

Have LYB insiders filed to sell?

3 Form 144 notices on file for LYB worth $26.5M at the prices reported; 0 in the last 90 days worth $0. Latest: JEFFREY KAPLAN filed on 2026-05-13 to sell 10,000 shares ($742K) from 2026-05-13.

Who owns 5% or more of LYB?

What did LYB report last quarter?

Which tracked 13F managers own LYB?

7 of the 30 tracked 13F managers held LYB shares at their latest filing, $808.9M in all. The largest: Cliff Asness's AQR Capital Management (9.2M shares, $485.7M), Ken Griffin's Citadel Advisors (2.4M shares, $128.0M), Two Sigma Investments (1.6M shares, $84.7M), D. E. Shaw & Co. (990K shares, $52.1M), Steve Cohen's Point72 Asset Management (516K shares, $27.2M), Izzy Englander's Millennium Management (439K shares, $23.1M). The table above lists all 7.

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.