AdvanSix (ASIX)

AdvanSix on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on NYSE, classified by the SEC as plastic materials, synth resins & nonvulcan elastomers.

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575K

Short interest

settlement 2026-09-30

1.9

Days to cover

-0.1 days vs prior

62.6%

Short share of volume

2026-10-09

12,768

Fails to deliver

settlement 2026-09-10

Fri 30 Oct

Next earnings

estimated date

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 ASIX is 574,592 shares, down 32,966 shares over the last month. Over the last 48 readings it ranged from 258,710 shares (31 October 2024) to 1,366,837 shares (28 November 2025). At the reported average volume of 303K shares a day that is 1.9 days to cover.

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Settlement	Shares short	Change	Avg daily volume	Days to cover
2026-09-30	574,592	+11.9%	303,091	1.90
2026-09-15	513,398	-15.5%	254,731	2.02
2026-08-31	607,558	-5.2%	272,346	2.23
2026-08-14	641,032	+6.3%	351,608	1.82
2026-07-31	603,236	-10.1%	214,183	2.82
2026-07-15	671,031	-4.6%	238,854	2.81
2026-06-30	703,648	+17.7%	318,998	2.21
2026-06-15	597,828	+3.8%	177,024	3.38
2026-05-29	576,183	-10.8%	230,258	2.50
2026-05-15	645,616	-0.8%	473,008	1.36
2026-04-30	650,760	+16.2%	272,278	2.39
2026-04-15	559,922	-11.4%	400,950	1.40
2026-03-31	631,964	-19.0%	653,789	1.00
2026-03-13	780,595	+37.6%	625,830	1.25
2026-02-27	567,388	-22.9%	387,687	1.46
2026-02-13	735,878	-6.8%	301,271	2.44
2026-01-30	789,256	+20.6%	337,287	2.34
2026-01-15	654,537	-7.7%	354,942	1.84
2025-12-31	708,824	-40.5%	878,210	1.00
2025-12-15	1,191,917	-12.8%	564,355	2.11
2025-11-28	1,366,837	+16.6%	430,017	3.18
2025-11-14	1,171,759	+18.5%	489,506	2.39
2025-10-31	988,526	+44.4%	251,865	3.92
2025-10-15	684,423	+13.6%	281,055	2.44

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 9 October 2026, the short share of ASIX volume is 62.6%, up 13.5 points over the last five sessions. Over the last 30 readings it ranged from 29.2% (10 September 2026) to 65.8% (8 October 2026). The latest reading sits at the top of that range. The latest reading is 10.9 points above the 30-session average of 51.7%, on 93K shares reported.

Date	Short volume	Total volume	Short share	Exempt
2026-10-09	58K	93K	62.6%	0
2026-10-08	41K	62K	65.8%	0
2026-10-07	41K	70K	58.2%	0
2026-10-06	44K	80K	55.1%	1,692
2026-10-05	32K	63K	51.5%	0
2026-10-02	39K	79K	49.1%	83
2026-10-01	48K	118K	40.4%	300
2026-09-30	62K	157K	39.4%	83
2026-09-29	62K	97K	63.5%	0
2026-09-28	39K	78K	50.4%	0
2026-09-25	36K	69K	51.3%	0
2026-09-24	42K	72K	58.6%	0
2026-09-23	41K	69K	59.1%	0
2026-09-22	49K	86K	57.5%	0
2026-09-21	49K	105K	46.2%	12,174
2026-09-18	43K	71K	60.9%	0
2026-09-17	49K	86K	57.3%	3
2026-09-16	69K	110K	62.6%	4
2026-09-15	44K	87K	50.5%	8
2026-09-14	37K	96K	38.8%	0
2026-09-11	34K	87K	39.2%	0
2026-09-10	27K	93K	29.2%	17
2026-09-09	49K	103K	47.3%	0
2026-09-08	49K	114K	43.2%	0
2026-09-04	59K	89K	65.7%	0
2026-09-03	48K	80K	60.1%	0
2026-09-02	36K	77K	46.2%	0
2026-09-01	30K	62K	48.1%	0
2026-08-31	45K	78K	57.4%	0
2026-08-28	26K	69K	37.1%	0

Fails to deliver

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

As of 10 September 2026, the fails-to-deliver balance in ASIX is 12,768 shares, up 12,547 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (9 June 2026) to 12,768 shares (10 September 2026). The latest reading sits at the top of that range.

Settlement	Shares failed	Price	Value
2026-09-10	12,768	$16.89	$216K
2026-08-13	221	$15.82	$3K
2026-08-06	127	$20.03	$3K
2026-07-29	36	$20.43	$735
2026-07-28	38	$20.25	$770
2026-07-23	269	$21.85	$6K
2026-07-22	556	$21.56	$12K
2026-07-21	469	$20.43	$10K
2026-07-15	24	$21.03	$505
2026-07-14	4,333	$20.93	$91K
2026-07-02	4	$19.85	$79
2026-07-01	41	$19.88	$815
2026-06-30	66	$19.73	$1K
2026-06-17	930	$21.30	$20K
2026-06-12	65	$21.49	$1K
2026-06-09	1	$21.37	$21
2026-06-02	6	$22.29	$134
2026-05-18	30	$21.62	$649
2026-05-15	3	$21.81	$65
2026-05-11	62	$20.32	$1K
2026-04-14	658	$23.90	$16K
2026-03-31	788	$24.12	$19K
2026-03-10	4,978	$18.82	$94K
2026-03-09	36	$19.61	$706
2026-03-02	51	$17.83	$909
2026-02-13	12,494	$18.48	$231K
2026-02-12	11,517	$18.86	$217K
2026-01-26	328	$17.07	$6K
2026-01-13	1,714	$18.26	$31K
2026-01-12	20	$18.49	$370

Insider trades

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

No open-market insider trades were reported for ASIX in the last 90 days. The most recent filings are listed below. Latest filing: Williams Patrick (Director) on 2026-10-06.

Date	Insider	Title	Type	Shares	Price	Value	Owned after
2026-10-06	Williams Patrick	Director	Grant	785	$16.70	$13K	44K
2026-06-30	Williams Patrick	Director	Grant	660	$19.88	$13K	43K
2026-06-22	Roberts Daryl	Director	Grant	6K	$0.00	$0	6K
2026-06-22	Lovett Gena C	Director	Grant	6K	$0.00	$0	21K
2026-06-22	Karran Todd D.	Director	Grant	6K	$0.00	$0	92K
2026-06-22	Bird Jeffrey J.	Director	Grant	6K	$0.00	$0	6K
2026-06-22	Spurlin Sharon	Director	Grant	6K	$0.00	$0	81K
2026-06-22	Williams Patrick	Director	Grant	6K	$0.00	$0	43K
2026-06-22	NEWMAN DONALD P	Director	Grant	6K	$0.00	$0	22K
2026-06-22	O'Brien Dana C.	Director	Grant	6K	$0.00	$0	6K
2026-04-27	Day Patrick C.	SVP, CFO	Grant	19K	$23.66	$450K	38K
2026-04-27	Day Patrick C.	SVP, CFO	Grant	19K	$23.66	$450K	19K
2026-03-31	Williams Patrick	Director	Grant	537	$24.40	$13K	37K
2026-03-24	Ryan Rachael E	VP, Controller	Tax withholding	2K	$22.02	$46K	17K
2026-02-28	SLIETER KELLY	SVP, Chief HR Officer	Tax withholding	5K	$17.47	$95K	65K
2026-02-28	Kintiroglou Achilles B.	SVP, General Counsel	Tax withholding	8K	$17.47	$140K	50K
2026-02-28	Kane Erin N	Chief Executive Officer	Tax withholding	34K	$17.47	$588K	623K
2026-02-28	Gramm Christopher	VP and Interim CFO	Tax withholding	3K	$17.47	$46K	73K
2026-02-26	Ryan Rachael E	VP, Controller	Grant	6K	$17.79	$100K	19K
2026-02-26	SLIETER KELLY	SVP, Chief HR Officer	Grant	22K	$17.79	$400K	70K
2026-02-26	Kintiroglou Achilles B.	SVP, General Counsel	Grant	28K	$17.79	$500K	58K
2026-02-26	Kane Erin N	Chief Executive Officer	Grant	111K	$17.79	$2.0M	657K
2026-02-26	Gramm Christopher	VP and Interim CFO	Grant	21K	$17.79	$375K	76K
2025-12-15	Williams Patrick	Director	Grant	821	$15.97	$13K	36K
2025-12-15	NEWMAN DONALD P	Director	Grant	2K	$15.97	$27K	15K
2025-10-03	Kintiroglou Achilles B.	SVP, General Counsel	Sell	577	$20.00	$12K	30K
2025-09-30	Williams Patrick	Director	Grant	677	$19.38	$13K	35K
2025-09-30	NEWMAN DONALD P	Director	Grant	1K	$19.38	$27K	13K
2025-09-02	Kintiroglou Achilles B.	SVP, General Counsel	Sell	571	$21.20	$12K	31K
2025-08-01	Kintiroglou Achilles B.	SVP, General Counsel	Sell	571	$20.18	$12K	31K
2025-07-02	Kintiroglou Achilles B.	SVP, General Counsel	Sell	571	$24.85	$14K	32K
2025-06-30	Williams Patrick	Director	Grant	552	$23.75	$13K	34K
2025-06-30	NEWMAN DONALD P	Director	Grant	977	$23.75	$23K	12K
2025-06-18	Williams Patrick	Director	Grant	5K	$0.00	$0	34K
2025-06-18	Spurlin Sharon	Director	Grant	5K	$0.00	$0	75K
2025-06-18	Sansone Daniel F	Director	Grant	5K	$0.00	$0	36K
2025-06-18	NEWMAN DONALD P	Director	Grant	5K	$0.00	$0	11K
2025-06-18	Lovett Gena C	Director	Grant	5K	$0.00	$0	15K
2025-06-18	Karran Todd D.	Director	Grant	5K	$0.00	$0	86K
2025-06-02	Kintiroglou Achilles B.	SVP, General Counsel	Sell	571	$23.65	$14K	33K
2025-05-01	Kintiroglou Achilles B.	SVP, General Counsel	Sell	3K	$21.34	$69K	33K
2025-04-01	Kintiroglou Achilles B.	SVP, General Counsel	Sell	4K	$22.24	$89K	36K
2025-03-31	NEWMAN DONALD P	Director	Grant	993	$22.65	$22K	6K
2025-03-31	Williams Patrick	Director	Grant	579	$22.65	$13K	29K
2025-03-24	Ryan Rachael E	VP, Controller	Grant	4K	$0.00	$0	13K
2025-03-24	Ryan Rachael E	VP, Controller	Grant	9K	$0.00	$0	9K
2025-03-03	Kintiroglou Achilles B.	SVP, General Counsel	Sell	4K	$27.75	$111K	40K
2025-02-28	Manjeshwar Siddharth	SVP & Chief Financial Officer	Grant	14K	$0.00	$0	41K
2025-02-28	Kintiroglou Achilles B.	SVP, General Counsel	Tax withholding	5K	$27.75	$131K	29K
2025-02-28	Kintiroglou Achilles B.	SVP, General Counsel	Grant	16K	$0.00	$0	44K

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 ASIX worth $99K at the prices reported; 0 in the last 90 days worth $0. Latest: Gramm Christopher filed on 2026-06-10 to sell 2,000 shares ($43K) from 2026-06-10.

Filed	Seller	Shares	Market value	Of outstanding	Sale from	Broker
2026-06-10	Gramm ChristopherOfficer	2K	$43K	0.007%	2026-06-10	Merrill Lynch
2026-05-13	Gramm ChristopherOfficer	2K	$45K	0.007%	2026-05-13	Merrill Lynch
2025-10-03	Kintiroglou Achilles B.Officer	577	$12K	0.002%	2025-10-03	Merrill Lynch

Large holders (13D and 13G)

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

8 holders report 5% or more of ASIX in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 7.1% of the class (1,919,001 shares), filed 2026-04-24 for an event on 2026-03-31.

Filed	Form	Holder	Shares	Of class	Event
2026-07-14	13G	Dimensional Fund Advisors LPinvestment adviser	1.4M	5.2%	2026-06-30
2026-05-14	13G	CastleKnight Master Fund LPpartnership	1.7M	6.2%	2026-05-07
2026-05-14	13G	CastleKnight Fund GP LLCother entity	1.7M	6.2%	2026-05-07
2026-05-14	13G	CastleKnight Management LPinvestment adviser, partnership	1.7M	6.2%	2026-05-07
2026-05-14	13G	CastleKnight Management GP LLCother entity	1.7M	6.2%	2026-05-07
2026-05-14	13G	Weitman Capital LLCother entity	1.7M	6.2%	2026-05-07
2026-05-14	13G	Aaron Weitmanparent holding company, individual	1.7M	6.2%	2026-05-07
2026-04-24	13G/Ano. 5	BlackRock, Inc.parent holding company	1.9M	7.1%	2026-03-31
2026-03-26	13G/Ano. 8	The Vanguard Groupinvestment adviser	0	0.0%	2026-03-13
2026-02-11	13G/Ano. 2	Victory Capital Management, Inc.investment adviser	138K	0.5%	2025-09-30

13F holders

Tracked managers holding ASIX at their latest 13F. JSON

6 of the 30 tracked managers held ASIX at their latest 13F, $38.0M in total at quarter-end prices. AQR Capital Management is the largest at $13.9M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 4 cut.

Fund	Quarter	Shares	Value	Of portfolio	Change in shares
AQR Capital Management	2026-06-30	700K	$13.9M	0.00%	+61K
Two Sigma Investments	2026-06-30	549K	$10.9M	0.01%	-64K
Citadel Advisors	2026-06-30	212K	$4.2M	0.00%	-10K
Millennium Management	2026-06-30	206K	$4.1M	0.00%	+7K
D. E. Shaw & Co.	2026-06-30	195K	$3.9M	0.00%	-34K
Fisher Asset Management	2026-06-30	50K	$997K	0.00%	-100

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.

What this page is

AdvanSix 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 AdvanSix (ASIX), SEC CIK 1673985, listed on NYSE, classified by the SEC as plastic materials, synth resins & nonvulcan elastomers. 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 2026-09-10.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 2026-06-10.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 2026-07-14.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
Earnings dates: SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-07.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 2026-10-06.JSON and CSV
Company record: EDGAR filing index for CIK 1673985Ticker, 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 plastic materials, synth resins & nonvulcan elastomers

Other company pages

Datasets

Frequently Asked Questions

How much of ASIX is sold short?

574,592 shares were held short at the 2026-09-30 settlement, 1.9 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 ASIX's daily short volume?

On 2026-10-09, 58,089 of the 92,749 ASIX shares reported to FINRA were sold short, 62.6% of the day's reported volume. Short volume is a flow for one day, not a position.

Does ASIX have fails to deliver?

The SEC's latest file shows 12,768 ASIX shares failed to deliver at settlement 2026-09-10. Fails are reported per settlement date and published twice a month with a lag.

Are ASIX insiders buying or selling?

No open-market insider trades were reported for ASIX in the last 90 days. The most recent filings are listed below. Latest filing: Williams Patrick (Director) on 2026-10-06.

Have ASIX insiders filed to sell?

3 Form 144 notices on file for ASIX worth $99K at the prices reported; 0 in the last 90 days worth $0. Latest: Gramm Christopher filed on 2026-06-10 to sell 2,000 shares ($43K) from 2026-06-10.

Who owns 5% or more of ASIX?

Which tracked 13F managers own ASIX?

6 of the 30 tracked 13F managers held ASIX shares at their latest filing, $38.0M in all. The largest: Cliff Asness's AQR Capital Management (700K shares, $13.9M), Two Sigma Investments (549K shares, $10.9M), Ken Griffin's Citadel Advisors (212K shares, $4.2M), Izzy Englander's Millennium Management (206K shares, $4.1M), D. E. Shaw & Co. (195K shares, $3.9M), Ken Fisher's Fisher Asset Management (50K shares, $997K).

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