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AdvanSix Inc.

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

No open-market purchases or sales by AdvanSix Inc. insiders were filed in the last 90 days; 259 institutions reported holding it in 13F filings for Q2 2026, worth $498.3M in total; no superinvestor holds it.

Four kinds of short-selling data, each measuring something different:

  • Short interest: shares sold short and not yet bought back, as of a settlement date. FINRA publishes it twice a month, about eight business days after the settlement date.
  • Daily short volume: shares sold short each day in off-exchange trades reported to FINRA. It counts trades, not open positions, and is published the next day.
  • Fails-to-deliver: shares not delivered by the settlement date. The SEC publishes them twice a month, about two weeks late.
  • ATS (dark pool) volume: weekly volume on alternative trading systems and other off-exchange venues. FINRA publishes it two to four weeks after the week.

More in the glossary.

Short interest

Shares sold short and not yet bought back, from FINRA, on every settlement date in the last two years.

Short interest
528.4K
Shares, settlement Oct 30, 2026
Change
−68.4K
−11.5% vs. Oct 15, 2026
Days to cover
2.16
Short interest ÷ average daily volume
Average daily volume
244.9K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 258,710 sharesNov 15, 2024: 299,479 sharesNov 29, 2024: 329,084 sharesDec 13, 2024: 362,976 sharesDec 31, 2024: 365,963 sharesJan 15, 2025: 345,131 sharesJan 31, 2025: 307,434 sharesFeb 14, 2025: 356,046 sharesFeb 28, 2025: 327,260 sharesMar 14, 2025: 351,859 sharesMar 31, 2025: 351,419 sharesApr 15, 2025: 382,636 sharesApr 30, 2025: 393,515 sharesMay 15, 2025: 470,422 sharesMay 30, 2025: 505,831 sharesJun 13, 2025: 555,891 sharesJun 30, 2025: 569,915 sharesJul 15, 2025: 501,716 sharesJul 31, 2025: 554,385 sharesAug 15, 2025: 531,138 sharesAug 29, 2025: 541,512 sharesSep 15, 2025: 490,346 sharesSep 30, 2025: 602,745 sharesOct 15, 2025: 684,423 sharesOct 31, 2025: 988,526 sharesNov 14, 2025: 1,171,759 sharesNov 28, 2025: 1,366,837 sharesDec 15, 2025: 1,191,917 sharesDec 31, 2025: 708,824 sharesJan 15, 2026: 654,537 sharesJan 30, 2026: 789,256 sharesFeb 13, 2026: 735,878 sharesFeb 27, 2026: 567,388 sharesMar 13, 2026: 780,595 sharesMar 31, 2026: 631,964 sharesApr 15, 2026: 559,922 sharesApr 30, 2026: 650,760 sharesMay 15, 2026: 645,616 sharesMay 29, 2026: 576,183 sharesJun 15, 2026: 597,828 sharesJun 30, 2026: 703,648 sharesJul 15, 2026: 671,031 sharesJul 31, 2026: 603,236 sharesAug 14, 2026: 641,032 sharesAug 31, 2026: 607,558 sharesSep 15, 2026: 513,398 sharesSep 30, 2026: 574,592 sharesOct 15, 2026: 596,838 sharesOct 30, 2026: 528,409 shares
Short interest in ASIX by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 2026528.4K−68.4K−11.5%244.9K2.16
Oct 15, 2026596.8K+22.2K+3.9%231.1K2.58
Sep 30, 2026574.6K+61.2K+11.9%303.1K1.90
Sep 15, 2026513.4K−94.2K−15.5%254.7K2.02
Aug 31, 2026607.6K−33.5K−5.2%272.3K2.23
Aug 14, 2026641.0K+37.8K+6.3%351.6K1.82
Jul 31, 2026603.2K−67.8K−10.1%214.2K2.82
Jul 15, 2026671.0K−32.6K−4.6%238.9K2.81
Jun 30, 2026703.6K+105.8K+17.7%319.0K2.21
Jun 15, 2026597.8K+21.6K+3.8%177.0K3.38
May 29, 2026576.2K−69.4K−10.8%230.3K2.50
May 15, 2026645.6K−5.14K−0.8%473.0K1.36
Apr 30, 2026650.8K+90.8K+16.2%272.3K2.39
Apr 15, 2026559.9K−72.0K−11.4%400.9K1.40
Mar 31, 2026632.0K−148.6K−19.0%653.8K1.00
Mar 13, 2026780.6K+213.2K+37.6%625.8K1.25
Feb 27, 2026567.4K−168.5K−22.9%387.7K1.46
Feb 13, 2026735.9K−53.4K−6.8%301.3K2.44
Jan 30, 2026789.3K+134.7K+20.6%337.3K2.34
Jan 15, 2026654.5K−54.3K−7.7%354.9K1.84
Dec 31, 2025708.8K−483.1K−40.5%878.2K1.00
Dec 15, 20251.19M−174.9K−12.8%564.4K2.11
Nov 28, 20251.37M+195.1K+16.7%430.0K3.18
Nov 14, 20251.17M+183.2K+18.5%489.5K2.39
Oct 31, 2025988.5K+304.1K+44.4%251.9K3.92
Oct 15, 2025684.4K+81.7K+13.6%281.1K2.44
Sep 30, 2025602.7K+112.4K+22.9%238.1K2.53
Sep 15, 2025490.3K−51.2K−9.5%197.6K2.48
Aug 29, 2025541.5K+10.4K+2.0%203.0K2.67
Aug 15, 2025531.1K−23.2K−4.2%280.9K1.89
Jul 31, 2025554.4K+52.7K+10.5%244.6K2.27
Jul 15, 2025501.7K−68.2K−12.0%201.4K2.49
Jun 30, 2025569.9K+14.0K+2.5%179.1K3.18
Jun 13, 2025555.9K+50.1K+9.9%127.0K4.38
May 30, 2025505.8K+35.4K+7.5%174.3K2.90
May 15, 2025470.4K+76.9K+19.5%266.1K1.77
Apr 30, 2025393.5K+10.9K+2.8%188.9K2.08
Apr 15, 2025382.6K+31.2K+8.9%243.2K1.57
Mar 31, 2025351.4K−440−0.1%175.8K2.00
Mar 14, 2025351.9K+24.6K+7.5%159.1K2.21
Feb 28, 2025327.3K−28.8K−8.1%195.1K1.68
Feb 14, 2025356.0K+48.6K+15.8%93.8K3.80
Jan 31, 2025307.4K−37.7K−10.9%114.8K2.68
Jan 15, 2025345.1K−20.8K−5.7%147.3K2.34
Dec 31, 2024366.0K+2.99K+0.8%146.1K2.50
Dec 13, 2024363.0K+33.9K+10.3%110.5K3.28
Nov 29, 2024329.1K+29.6K+9.9%125.2K2.63
Nov 15, 2024299.5K+40.8K+15.8%147.3K2.03
Oct 31, 2024258.7K−14.7K−5.4%99.8K2.59

Fails-to-deliver

Shares that weren't delivered by the settlement date, from the SEC, for the last 30 dates with fails. The price is the previous day's closing price published by the SEC.

Fails-to-deliver in ASIX by settlement date
Settlement dateSharesPriceValue
Sep 10, 202612,768$16.89$215.7K
Aug 13, 2026221$15.82$3.50K
Aug 6, 2026127$20.03$2.54K
Jul 29, 202636$20.43$735.48
Jul 28, 202638$20.25$769.5
Jul 23, 2026269$21.85$5.88K
Jul 22, 2026556$21.56$12.0K
Jul 21, 2026469$20.43$9.58K
Jul 15, 202624$21.03$504.72
Jul 14, 20264,333$20.93$90.7K
Jul 2, 20264$19.85$79.4
Jul 1, 202641$19.88$815.08
Jun 30, 202666$19.73$1.30K
Jun 17, 2026930$21.30$19.8K
Jun 12, 202665$21.49$1.40K
Jun 9, 20261$21.37$21.37
Jun 2, 20266$22.29$133.74
May 18, 202630$21.62$648.6
May 15, 20263$21.81$65.43
May 11, 202662$20.32$1.26K
Apr 14, 2026658$23.90$15.7K
Mar 31, 2026788$24.12$19.0K
Mar 10, 20264,978$18.82$93.7K
Mar 9, 202636$19.61$705.96
Mar 2, 202651$17.83$909.33
Feb 13, 202612,494$18.48$230.9K
Feb 12, 202611,517$18.86$217.2K
Jan 26, 2026328$17.07$5.60K
Jan 13, 20261,714$18.26$31.3K
Jan 12, 202620$18.49$369.8

Daily short volume

Off-exchange short-sale volume, not short interest: shares sold short each day in trades reported to FINRA, for the last 30 trading days.

The short volume ratio isn't a sentiment gauge: market makers sell short to fill buy orders and to hedge, so short sales are usually about half of off-exchange volume.

Off-exchange short volume in ASIX by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 13, 202653,137099,39853.5%
Nov 12, 202659,3240118,72350.0%
Nov 11, 202625,326467,25837.7%
Nov 10, 202660,4920124,42948.6%
Nov 9, 202677,470780154,89450.0%
Nov 6, 202647,9850121,44239.5%
Nov 5, 202647,3430120,61339.3%
Nov 4, 202657,3730119,22748.1%
Nov 3, 202624,928186,73428.7%
Nov 2, 202644,7220118,64937.7%
Oct 30, 202622,6350141,94315.9%
Oct 29, 202633,5900119,25428.2%
Oct 28, 202615,959067,16223.8%
Oct 27, 202626,66327099,38326.8%
Oct 26, 202632,8200102,01532.2%
Oct 23, 202631,609090,53434.9%
Oct 22, 202622,602076,13329.7%
Oct 21, 202631,547093,01133.9%
Oct 20, 202652,733091,28957.8%
Oct 19, 202624,110051,16847.1%
Oct 16, 202632,861060,32554.5%
Oct 15, 202624,941052,93647.1%
Oct 14, 202629,173068,70242.5%
Oct 13, 202625,617082,48431.1%
Oct 12, 202640,461072,83855.5%
Oct 9, 202658,089092,74962.6%
Oct 8, 202640,949062,18965.8%
Oct 7, 202640,523069,59958.2%
Oct 6, 202643,8701,69279,68055.1%
Oct 5, 202632,459063,08151.5%

ATS (dark pool) volume

Weekly volume on alternative trading systems (ATS) and other off-exchange (OTC) venues, from FINRA, for the last 12 weeks. ATS share is ATS volume ÷ (ATS + OTC volume), not a share of all trading.

Weekly ATS and OTC volume in ASIX
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2239,77611,141220,4173,28852.1%
Sep 28, 2026T2359,12312,173258,7932,96458.1%
Sep 21, 2026T2252,2278,899195,3962,34956.3%
Sep 14, 2026T2310,80710,987325,8062,46448.8%
Sep 7, 2026T2268,61313,987162,3792,23862.3%
Aug 31, 2026T2199,8359,331224,4982,89747.1%
Aug 24, 2026T2220,2498,662186,0882,45154.2%
Aug 17, 2026T2395,11815,301242,9932,75861.9%
Aug 10, 2026T2494,99819,619381,4183,63256.5%
Aug 3, 2026T2352,98414,907183,5853,24265.8%
Jul 27, 2026T2237,27713,574121,6561,68166.1%
Jul 20, 2026T2333,42413,860126,1051,76872.6%