AdvanSix Inc.

ASIX

Exchange: NYSE
Industry: Plastic Materials, Synth Resins & Nonvulcan Elastomers
SEC CIK: 0001673985

SEC filings (opens in a new tab)

No open-market purchases or sales by AdvanSix Inc. insiders were filed in the last 90 days; 256 institutions reported holding it in 13F filings for Q2 2026, worth $498.3M in total; no superinvestor holds it.

13F holders, Q1 2026

Institutional positions in AdvanSix Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders: 266; −4 vs. Q4 2025
Shares held: 23.7M; +1.51M (+6.8%) vs. Q4 2025
Total value: $572.4M; +$187.7M (+48.8%) vs. Q4 2025
New holders: 35; 80 more added
Sold out: 39; 64 more reduced

8 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ASIX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 266 institutions

Value heldQ1 2026: $572.4M

Institutions holding ASIX and their total value by quarter
Quarter	Holders	Value
Q2 2026	256	$498.3M
Q1 2026	266	$572.4M
Q4 2025	278	$414.3M
Q3 2025	277	$473.9M
Q2 2025	280	$583.7M
Q1 2025	277	$541.0M
Q4 2024	282	$678.7M
Q3 2024	279	$708.9M
Q2 2024	260	$526.1M
Q1 2024	272	$657.5M
Q4 2023	281	$690.7M
Q3 2023	285	$711.4M
Q2 2023	291	$821.8M
Q1 2023	305	$893.4M
Q4 2022	316	$881.7M
Q3 2022	306	$742.9M
Q2 2022	324	$782.1M
Q1 2022	341	$1.21B
Q4 2021	350	$1.09B
Q3 2021	305	$927.5M
Q2 2021	288	$688.7M
Q1 2021	274	$620.6M

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding AdvanSix Inc.; share changes are against Q4 2025.

Institutions holding ASIX in Q1 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
Blue Bell Private Wealth Management, LLC	25	$610	0.00%	00.0%	Unchanged
Compagnie Lombard Odier SCmA	25	$610	0.00%	00.0%	Unchanged
Boyd Watterson Asset Management LLC	25	$610	0.00%	00.0%	Unchanged
PFS Partners, LLC	24	$592	0.00%	00.0%	Unchanged
Clearstead Advisors, LLC	24	$586	0.00%	−4−14.3%	Reduced
Colonial Trust Co	24	$586	0.00%	00.0%	Unchanged
Financial Consulate, Inc	23	$562	0.00%	00.0%	Unchanged
First Command Advisory Services, Inc.	21	$512	0.00%	00.0%	Unchanged
Pinnacle Bancorp, Inc.	20	$488	0.00%	00.0%	Unchanged
Nemes Rush Group LLC	20	$488	0.00%	00.0%	Unchanged
Wall Street Access Asset Management, LLC	18	$439	0.00%	00.0%	Unchanged
Sunbelt Securities, Inc.	18	$439	0.00%	+14+350.0%	Added
Golden State Equity Partners	18	$439	0.00%	+18	New
Bell Investment Advisors, Inc	16	$391	0.00%	00.0%	Unchanged
Trust Co of Toledo NA	16	$390	0.00%	00.0%	Unchanged
Prestige Wealth Management Group LLC	15	$367	0.00%	00.0%	Unchanged
ESL Trust Services, LLC	15	$366	0.00%	00.0%	Unchanged
Ankerstar Wealth, LLC	15	$366	0.00%	00.0%	Unchanged
Rockefeller Capital Management L.P.	14	$355	0.00%	00.0%	Unchanged
Game Plan Financial Advisors, LLC	12	$293	0.00%	00.0%	Unchanged
True Wealth Design, LLC	12	$293	0.00%	+5+71.4%	Added
Westfuller Advisors, LLC	11	$269	0.00%	00.0%	Unchanged
JPL Wealth Management, LLC	11	$269	0.00%	+11	New
Assetmark, Inc	11	$268	0.00%	−192−94.6%	Reduced
Financial Perspectives, Inc	11	$268	0.00%	00.0%	Unchanged
Mark Sheptoff Financial Planning, LLC	10	$262	0.00%	00.0%	Unchanged
Northwestern Mutual Wealth Management Co	10	$249	0.00%	+4+66.7%	Added
Mather Group, LLC.	10	$244	0.00%	+10	New
North Star Investment Management Corp.	9	$222	0.00%	00.0%	Unchanged
GWM Advisors LLC	9	$220	0.00%	−392−97.8%	Reduced
Whittier Trust Co of Nevada Inc	8	$197	0.00%	00.0%	Unchanged
South State Corp.	8	$196	0.00%	00.0%	Unchanged
First Horizon Corp	8	$195	0.00%	00.0%	Unchanged
Cullen/Frost Bankers, Inc.	8	$195	0.00%	00.0%	Unchanged
Newbridge Financial Services Group, Inc.	8	$195	0.00%	00.0%	Unchanged
Federation des caisses Desjardins du Quebec	8	$195	0.00%	00.0%	Unchanged
Sachetta, LLC	7	$178	0.00%	00.0%	Unchanged
Gilpin Wealth Management, LLC	7	$171	0.00%	00.0%	Unchanged
Advisory Services Network, LLC	7	$171	0.00%	+7	New
Ares Financial Consulting, LLC	6	$151	0.00%	+6	New
Manchester Capital Management LLC	6	$147	0.00%	00.0%	Unchanged
Hollencrest Capital Management	6	$146	0.00%	00.0%	Unchanged
Horizon Financial Services, LLC	6	$146	0.00%	00.0%	Unchanged
Medallion Wealth Advisors, LLC	6	$146	0.00%	00.0%	Unchanged
West Branch Capital LLC	4	$98	0.00%	00.0%	Unchanged
St Germain D J Co Inc	4	$98	0.00%	00.0%	Unchanged
Private Trust Co NA	4	$98	0.00%	00.0%	Unchanged
Fortis Group Advisors, LLC	4	$98	0.00%	00.0%	Unchanged
MTM Investment Management, LLC	4	$98	0.00%	00.0%	Unchanged
Evelyn Partners Investment Management LLP	4	$98	0.00%	00.0%	Unchanged
Quent Capital, LLC	4	$91	0.00%	−5−55.6%	Reduced
Pinnacle Wealth Planning Services, Inc.	3	$73	0.00%	00.0%	Unchanged
Larson Financial Group LLC	3	$73	0.00%	00.0%	Unchanged
Marshall & Sterling Wealth Advisors Inc.	2	$54	0.00%	00.0%	Unchanged
Chilton Capital Management LLC	2	$49	0.00%	00.0%	Unchanged
Elevated Capital Advisors, LLC	2	$49	0.00%	00.0%	Unchanged
Pension & Wealth Management Advisors, Inc.	2	$49	0.00%	00.0%	Unchanged
Napier Financial, LLC	2	$49	0.00%	+2	New
Zions Bancorporation, National Association	1	$24	0.00%	00.0%	Unchanged
Rosenberg Matthew Hamilton	1	$24	0.00%	00.0%	Unchanged
Ronald Blue Trust, Inc.	1	$24	0.00%	00.0%	Unchanged
Fairman Group, LLC	1	$24	0.00%	00.0%	Unchanged
Delta Asset Management LLC	1	$24	0.00%	+1	New
Keating Financial Advisory Services, Inc.	1	$24	0.00%	+1	New
Hazlett, Burt & Watson, Inc.	19	$0	0.00%	00.0%	Unchanged
Capital Advisors, Ltd. LLC	15	$0	0.00%	00.0%	Unchanged
Renaissance Technologies LLC	0	$0	0.00%	−203,800−100.0%	Sold out
Two Sigma Advisers, LP	0	$0	0.00%	−192,380−100.0%	Sold out
Hotchkis & Wiley Capital Management LLC	0	$0	0.00%	−145,626−100.0%	Sold out
Prudential Financial Inc	0	$0	0.00%	−108,408−100.0%	Sold out
Teacher Retirement System of Texas	0	$0	0.00%	−89,179−100.0%	Sold out
Murphy, Middleton, Hinkle & Parker, Inc.	0	$0	0.00%	−40,568−100.0%	Sold out
Swiss National Bank	0	$0	0.00%	−51,800−100.0%	Sold out
Voya Investment Management LLC	0	$0	0.00%	−37,720−100.0%	Sold out
Aster Capital Management (DIFC) Ltd	0	$0	0.00%	−31,113−100.0%	Sold out
Quantbot Technologies LP	0	$0	0.00%	−27,978−100.0%	Sold out
Los Angeles Capital Management LLC	0	$0	0.00%	−21,329−100.0%	Sold out
Weiss Asset Management LP	0	$0	0.00%	−20,760−100.0%	Sold out
Schonfeld Strategic Advisors LLC	0	$0	0.00%	−19,573−100.0%	Sold out
Quest Partners LLC	0	$0	0.00%	−16,003−100.0%	Sold out
Boothbay Fund Management, LLC	0	$0	0.00%	−15,017−100.0%	Sold out
Virginia Retirement Systems Et Al	0	$0	0.00%	−14,980−100.0%	Sold out
Janus Henderson Group PLC	0	$0	0.00%	−12,129−100.0%	Sold out
Zurcher Kantonalbank (Zurich Cantonalbank)	0	$0	0.00%	−11,549−100.0%	Sold out
Jain Global LLC	0	$0	0.00%	−11,514−100.0%	Sold out
Atom Investors LP	0	$0	0.00%	−10,951−100.0%	Sold out
Aigen Investment Management, LP	0	$0	0.00%	−10,803−100.0%	Sold out
Intech Investment Management LLC	0	$0	0.00%	−10,265−100.0%	Sold out
Inspire Advisors, LLC	0	$0	0.00%	−10,154−100.0%	Sold out
Mangrove Partners	0	$0	0.00%	−10,038−100.0%	Sold out
KLP Kapitalforvaltning AS	0	$0	0.00%	−5,700−100.0%	Sold out
Great West Life Assurance Co	0	$0	0.00%	−3,002−100.0%	Sold out
Ensign Peak Advisors, Inc	0	$0	0.00%	−1,829−100.0%	Sold out
Amalgamated Bank	0	$0	0.00%	−825−100.0%	Sold out
Torren Management, LLC	0	$0	0.00%	−199−100.0%	Sold out
Danske Bank A/S	0	$0	0.00%	−100−100.0%	Sold out
Cedar Mountain Advisors, LLC	0	$0	0.00%	−39−100.0%	Sold out
Cape Investment Advisory, Inc.	0	$0	0.00%	−24−100.0%	Sold out
Harbor Asset Planning, Inc.	0	$0	0.00%	−19−100.0%	Sold out
Flagship Harbor Advisors, LLC	0	$0	0.00%	−18−100.0%	Sold out