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Immunic (IMUX)

Immunic on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq.

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1.9M

Short interest

settlement 2026-10-15

4.1

Days to cover

-0.5 days vs prior

60.0%

Short share of volume

2026-11-02

13

Fails to deliver

settlement 2026-10-14

Thu 12 Nov

Next earnings

estimated date

$0

Insider flow, 90 days

0 buys, 0 sells

As of 2026-11-02.

Short interest

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

As of 15 October 2026, short interest in IMUX is 1,861,639 shares, up 66,867 shares over the last month. Over the last 48 readings it ranged from 1,277,166 shares (14 August 2026) to 10,434,451 shares (30 September 2025). The latest reading sits at the bottom of that range. At the reported average volume of 454K shares a day that is 4.1 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-10-151,861,639-10.3%454,1314.10
2026-09-302,075,709+15.7%455,3704.56
2026-09-151,794,772+20.4%356,3865.04
2026-08-311,490,847+16.7%194,7967.65
2026-08-141,277,166-10.9%182,1617.01
2026-07-311,433,665+1.4%141,49510.13
2026-07-151,413,871-10.9%149,5049.46
2026-06-301,587,111-2.6%211,0037.52
2026-06-151,630,369-7.6%223,4257.30
2026-05-291,764,788+12.7%266,6256.62
2026-05-151,566,308+17.2%273,0365.74
2026-04-301,336,756-84.0%417,5203.20
2026-04-158,327,660-7.0%2,039,8154.08
2026-03-318,954,740+3.5%2,048,7404.37
2026-03-138,656,401+14.2%4,311,8722.01
2026-02-277,579,660+14.5%2,846,3102.66
2026-02-136,620,441+0.7%8,405,3521.00
2026-01-306,571,515-7.3%1,459,6514.50
2026-01-157,088,984+7.8%1,692,8654.19
2025-12-316,573,373+15.0%1,606,6484.09
2025-12-155,716,900+2.3%1,369,3474.17
2025-11-285,587,275-2.4%1,154,0414.84
2025-11-145,724,437-30.5%1,240,1344.62
2025-10-318,234,621-13.2%1,332,2736.18
2025-10-159,490,385-9.1%1,633,0585.81
2025-09-3010,434,451+4.3%1,422,8647.33
2025-09-1510,009,140+1.8%1,597,9066.26
2025-08-299,833,808+2.0%1,149,4838.55
2025-08-159,645,022-1.4%1,068,5109.03
2025-07-319,783,401+14.2%1,310,9137.46
2025-07-158,564,101-4.4%791,12910.83
2025-06-308,954,528+20.3%2,382,6083.76
2025-06-137,442,140+75.3%2,730,1262.73
2025-05-304,246,481+55.6%1,863,0452.28
2025-05-152,728,889-0.5%1,101,6352.48
2025-04-302,741,418+32.5%1,460,2301.88
2025-04-152,068,827+2.3%682,5873.03
2025-03-312,022,033-12.7%594,7913.40
2025-03-142,316,757-3.3%591,3963.92
2025-02-282,396,538-6.1%1,253,7941.91
2025-02-142,551,200-32.1%471,4495.41
2025-01-313,754,934+6.5%1,283,6862.93
2025-01-153,523,974-37.6%950,6013.71
2024-12-315,643,746+14.9%906,3746.23
2024-12-134,910,889+17.1%782,8216.27
2024-11-294,193,565+10.5%718,4795.84
2024-11-153,796,561-15.6%1,031,8263.68
2024-10-314,498,863+29.8%1,562,3882.88

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 2 November 2026, the short share of IMUX volume is 60.0%, up 9.3 points over the last five sessions. Over the last 30 readings it ranged from 18.0% (28 September 2026) to 71.3% (13 October 2026). The latest reading is 12.6 points above the 30-session average of 47.4%, on 97K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-11-0258K97K60.0%0
2026-10-3073K130K56.7%0
2026-10-2941K98K41.5%0
2026-10-2854K123K44.3%0
2026-10-2770K196K35.7%0
2026-10-26108K214K50.6%122
2026-10-2387K167K52.1%0
2026-10-2290K215K42.0%0
2026-10-2182K154K53.1%0
2026-10-20138K251K54.9%75
2026-10-1954K117K46.4%0
2026-10-16119K180K65.9%100
2026-10-1591K137K66.9%0
2026-10-14130K215K60.7%10,267
2026-10-13206K289K71.3%16,859
2026-10-1241K70K58.7%0
2026-10-0992K247K37.4%1,350
2026-10-0871K185K38.4%0
2026-10-0753K206K25.7%0
2026-10-0662K190K32.7%0
2026-10-0552K166K31.7%3,715
2026-10-02109K266K41.2%5,378
2026-10-0190K302K29.9%0
2026-09-3076K131K58.3%0
2026-09-2972K197K36.7%7,173
2026-09-2884K467K18.0%0
2026-09-2568K161K42.1%0
2026-09-24101K160K62.9%2,661
2026-09-23162K288K56.2%5,791
2026-09-2284K169K49.8%0

Fails to deliver

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

As of 14 October 2026, the fails-to-deliver balance in IMUX is 13 shares, down 544 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (14 August 2026) to 10,478 shares (17 July 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-10-1413$6.89$90
2026-10-13557$7.95$4K
2026-10-06959$8.07$8K
2026-09-291,049$9.51$10K
2026-09-247,890$9.37$74K
2026-09-17743$10.12$8K
2026-09-09239$12.74$3K
2026-09-045,402$12.76$69K
2026-08-318,554$15.40$132K
2026-08-25947$16.46$16K
2026-08-24947$16.50$16K
2026-08-21549$16.10$9K
2026-08-141$16.58$17
2026-08-1234$15.48$526
2026-08-1152$14.10$733
2026-08-042$14.10$28
2026-08-03605$13.97$8K
2026-07-31258$13.99$4K
2026-07-30710$13.05$9K
2026-07-2917$13.34$227
2026-07-213,814$15.00$57K
2026-07-20400$15.16$6K
2026-07-1710,478$15.03$157K
2026-07-14176$14.64$3K
2026-07-07156$14.86$2K
2026-07-06115$14.80$2K
2026-07-028,386$14.81$124K
2026-07-018$15.37$123
2026-06-304,020$15.41$62K
2026-06-29948$15.30$15K

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for IMUX in the last 90 days. The most recent filings are listed below. Latest filing: Nash Duane (Executive Chairman) on 2025-06-13.

DateInsiderTitleTypeSharesPriceValueOwned after
2025-06-13Nash DuaneExecutive ChairmanBuy20K$0.83$17K36K
2025-06-05Neermann JoergDirectorBuy30K$0.76$23K200K
2025-06-05Tardio JasonPresident and COOBuy13K$0.79$10K13K
2025-06-04Neermann JoergDirectorBuy70K$0.77$54K170K
2025-06-04Vitt DanielCEO and DirectorBuy15K$0.77$12K29K
2025-06-03Rudick Richard AlanDirectorBuy143K$0.70$100K230K
2025-06-03Whaley GlennChief Financial OfficerBuy45K$0.71$32K96K
2025-05-30Whaley GlennChief Financial OfficerGrant25K$0.56$14K51K
2024-11-12Rudick Richard AlanDirectorBuy87K$1.15$100K87K
2024-02-26Vitt DanielPresident and CEOBuy14K$1.31$18K391K
2023-05-15Whaley GlennChief Financial OfficerBuy5K$1.75$9K26K
2022-12-14Neermann JoergDirectorBuy47K$1.26$59K100K
2022-12-13Neermann JoergDirectorBuy35K$1.25$44K53K
2022-11-23Neermann JoergDirectorBuy18K$1.39$25K18K
2022-11-22Vitt DanielPresident and CEOBuy8K$1.35$11K377K
2022-11-07Whaley GlennChief Financial OfficerBuy5K$1.50$8K21K
2022-06-03Whaley GlennChief Financial OfficerBuy4K$3.05$11K13K
2022-06-03Vitt DanielPresident and CEOBuy5K$3.10$16K369K
2022-05-12Nash DuaneExecutive ChairmanBuy10K$5.03$50K22K
2022-05-12Nash DuaneExecutive ChairmanGift6K$0.00$016K
2022-05-12Whaley GlennChief Financial OfficerBuy3K$5.08$15K9K
2022-05-12Muehler AndreasChief Medical OfficerBuy4K$5.10$18K298K
2021-08-10Nash DuaneExecutive ChairmanBuy1K$9.80$10K15K
2021-08-10Vitt DanielPresident and CEOBuy1K$9.60$10K364K
2021-08-10Whaley GlennPFO and PAOBuy2K$9.85$15K4K
2021-05-12Nash DuaneExecutive ChairmanBuy4K$12.75$51K14K
2021-03-02Whaley GlennPFO and PAOBuy1K$16.48$16K2K
2021-03-02Muehler AndreasChief Medical OfficerBuy10K$15.54$155K294K
2020-08-10Whaley GlennPFO and PAOBuy1K$18.96$19K1K
2020-07-21Vitt DanielChief Executive OfficerSell1K$15.62$20K363K
2020-07-21Groeppel ManfredChief Operating OfficerSell650$15.62$10K279K
2020-07-20Vitt DanielChief Executive OfficerSell5K$14.44$72K364K
2020-07-20Groeppel ManfredChief Operating OfficerSell5K$14.44$72K279K

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.

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first, 50 of 63 shown. JSON

41 holders report 5% or more of IMUX in their latest filing, 6 on Schedule 13D (active intent). The largest reported stake is Vivo Opportunity Cayman Fund, L.P. at 10.0% of the class (2,942,094 shares), filed 2026-02-20 for an event on 2026-02-17.

FiledFormHolderSharesOf classEvent
2026-11-0213G/Ano. 3Aberdeen Group plcparent holding company1.1M8.0%2026-09-30
2026-11-0213G/Ano. 3abrdn Inc.corporation, investment adviser1.1M8.0%2026-09-30
2026-08-1413G/Ano. 1Commodore Capital LPinvestment adviser, partnership1.5M9.9%2026-06-30
2026-08-1413G/Ano. 1Michael Kramarzparent holding company, individual1.5M9.9%2026-06-30
2026-08-1413G/Ano. 1Robert Egen Atkinsonparent holding company, individual1.5M9.9%2026-06-30
2026-08-1413G/Ano. 1Commodore Capital Master LPpartnership1.5M9.9%2026-06-30
2026-08-1413G/Ano. 2Daniel Mackparent holding company1.1M7.5%2026-06-30
2026-08-1413G/Ano. 2Nantahala Capital Management, LLCinvestment adviser1.1M7.5%2026-06-30
2026-08-1413G/Ano. 2Wilmot B. Harkeyparent holding company1.1M7.5%2026-06-30
2026-08-1413GOrbiMed Advisors LLCinvestment adviser757K5.3%2026-06-30
2026-08-1413GOrbiMed Genesis GP LLCother entity757K5.3%2026-06-30
2026-08-1413GOrbiMed Capital LLCinvestment adviser389K2.8%2026-06-30
2026-08-1313G/Ano. 1Soleus Capital Management, L.P.partnership679K4.9%2026-06-30
2026-08-1313G/Ano. 1Soleus GP, LLCother entity679K4.9%2026-06-30
2026-08-1313G/Ano. 1Guy Levyindividual679K4.9%2026-06-30
2026-08-1313G/Ano. 1Soleus Capital Master Fund, L.P.non-US institution679K4.9%2026-06-30
2026-08-1313G/Ano. 1Soleus Capital, LLCother entity679K4.9%2026-06-30
2026-08-1313G/Ano. 1Soleus Capital Group, LLCother entity679K4.9%2026-06-30
2026-08-0613G/Ano. 1Millennium Group Management LLCother entity970K7.0%2026-06-30
2026-08-0613G/Ano. 1Israel A. Englanderindividual970K7.0%2026-06-30
2026-08-0613G/Ano. 1Millennium Management LLCother entity970K7.0%2026-06-30
2026-08-0613G/Ano. 1Integrated Core Strategies (US) LLCother entity961K6.9%2026-06-30
2026-08-0413GBenjamin Alexander Smithparent holding company, individual840K6.1%2026-06-30
2026-08-0413GJanaka Sheehan Maduraperumaparent holding company, individual840K6.1%2026-06-30
2026-08-0413GLaurion Capital Management LPinvestment adviser, partnership840K6.1%2026-06-30
2026-05-1513G/Ano. 3Anand Parekhindividual6.3M4.8%2026-03-31
2026-05-1513G/Ano. 3Alyeska Fund GP, LLCother entity6.3M4.8%2026-03-31
2026-05-1513G/Ano. 3Alyeska Investment Group, L.P.investment adviser6.3M4.8%2026-03-31
2026-05-1513G/Ano. 2Zweiman Ariindividual474K3.4%2026-03-31
2026-05-1513G/Ano. 2683 CAPITAL PARTNERS, LPpartnership474K3.4%2026-03-31
2026-05-1513G/Ano. 2683 CAPITAL MANAGEMENT, LLCinvestment adviser474K3.4%2026-03-31
2026-04-1713GAvidity Private Master Fund I LPpartnership14.0M9.9%2026-02-17
2026-04-1713GAvidity Partners Management LPinvestment adviser, partnership14.0M9.9%2026-02-17
2026-04-1713GAvidity Partners Management (GP) LLCother entity14.0M9.9%2026-02-17
2026-04-1713GAvidity Capital Partners Fund (GP) LPpartnership14.0M9.9%2026-02-17
2026-04-1713GAvidity Capital Partners (GP) LLCother entity14.0M9.9%2026-02-17
2026-04-1713GMichael Gregoryparent holding company, individual14.0M9.9%2026-02-17
2026-03-0413GDeep Track Capital, LPinvestment adviser, other entity11.5M8.7%2026-02-17
2026-03-0413GDavid Kroinparent holding company, individual11.5M8.7%2026-02-17
2026-03-0413GDeep Track Biotechnology Master Fund, Ltd.corporation9.0M6.8%2026-02-17
2026-03-0413GDeep Track Special Opportunities Fund, LP.partnership2.5M1.9%2026-02-17
2026-02-2413GTrails Edge Capital Partners, LPinvestment adviser, partnership11.5M8.7%2026-02-17
2026-02-2413GOrtav Yehudaiindividual11.5M8.7%2026-02-17
2026-02-2413GTrails Edge Biotechnology Master Fund, LPpartnership11.5M8.7%2026-02-17
2026-02-2013GVivo Opportunity Cayman Fund, L.P.partnership2.9M10.0%2026-02-17
2026-02-2013GVivo Opportunity, LLCother entity29.1M10.0%2026-02-17
2026-02-2013GVivo Opportunity Fund Holdings, L.P.partnership29.1M10.0%2026-02-17
2026-02-2013GVivo Opportunity Cayman, LLCother entity2.9M10.0%2026-02-17
2026-02-2013DLAMPERT MARK Nindividual13.6M10.0%2026-02-12
2026-02-2013DBVF PARTNERS L P/ILinvestment adviser, partnership13.6M10.0%2026-02-12

13F holders

Tracked managers holding IMUX at their latest 13F. JSON

3 of the 30 tracked managers held IMUX at their latest 13F, $11.9M in total at quarter-end prices. Millennium Management is the largest at $11.4M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 0 cut.

FundQuarterSharesValueOf portfolioChange in shares
Millennium Management2026-06-30740K$11.4M0.00%new
Citadel Advisors2026-06-3022K$332K0.00%new
Point72 Asset Management2026-06-3011K$166K0.00%new

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

Immunic 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 Immunic (IMUX), SEC CIK 1280776, listed on Nasdaq. 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 2026-10-15.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-14.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 2026-11-02.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 2026-08-11.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 2025-06-13.JSON and CSV
Company record
EDGAR filing index for CIK 1280776Ticker, 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.

Datasets

Frequently Asked Questions

How much of IMUX is sold short?
1,861,639 shares were held short at the 2026-10-15 settlement, 4.1 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 IMUX's daily short volume?
On 2026-11-02, 58,331 of the 97,286 IMUX shares reported to FINRA were sold short, 60.0% of the day's reported volume. Short volume is a flow for one day, not a position.
Does IMUX have fails to deliver?
The SEC's latest file shows 13 IMUX shares failed to deliver at settlement 2026-10-14. Fails are reported per settlement date and published twice a month with a lag.
Are IMUX insiders buying or selling?
No open-market insider trades were reported for IMUX in the last 90 days. The most recent filings are listed below. Latest filing: Nash Duane (Executive Chairman) on 2025-06-13.
Who owns 5% or more of IMUX?
41 holders report 5% or more of IMUX in their latest filing, 6 on Schedule 13D (active intent). The largest reported stake is Vivo Opportunity Cayman Fund, L.P. at 10.0% of the class (2,942,094 shares), filed 2026-02-20 for an event on 2026-02-17.
Which tracked 13F managers own IMUX?
3 of the 30 tracked 13F managers held IMUX shares at their latest filing, $11.9M in all. The largest: Izzy Englander's Millennium Management (740K shares, $11.4M), Ken Griffin's Citadel Advisors (22K shares, $332K), Steve Cohen's Point72 Asset Management (11K shares, $166K).

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