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Fennec Pharmaceuticals Inc.

FENC
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
SEC CIK
0001211583

In the last 90 days, Fennec Pharmaceuticals Inc. insiders filed 0 open-market purchases and 4 sales; 105 institutions reported holding it in 13F filings for Q2 2026, worth $175.1M 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
454.5K
Shares, settlement Oct 30, 2026
Change
−33.1K
−6.8% vs. Oct 15, 2026
Days to cover
3.89
Short interest ÷ average daily volume
Average daily volume
116.8K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 1,784,207 sharesNov 15, 2024: 1,865,902 sharesNov 29, 2024: 2,103,538 sharesDec 13, 2024: 2,108,899 sharesDec 31, 2024: 1,983,872 sharesJan 15, 2025: 1,997,902 sharesJan 31, 2025: 1,953,811 sharesFeb 14, 2025: 2,040,612 sharesFeb 28, 2025: 1,925,077 sharesMar 14, 2025: 1,437,198 sharesMar 31, 2025: 1,496,060 sharesApr 15, 2025: 1,438,337 sharesApr 30, 2025: 1,454,458 sharesMay 15, 2025: 1,512,102 sharesMay 30, 2025: 1,424,704 sharesJun 13, 2025: 1,364,971 sharesJun 30, 2025: 1,305,028 sharesJul 15, 2025: 1,302,740 sharesJul 31, 2025: 1,284,417 sharesAug 15, 2025: 1,279,636 sharesAug 29, 2025: 1,246,841 sharesSep 15, 2025: 1,327,328 sharesSep 30, 2025: 1,303,927 sharesOct 15, 2025: 1,308,525 sharesOct 31, 2025: 980,887 sharesNov 14, 2025: 1,073,787 sharesNov 28, 2025: 882,225 sharesDec 15, 2025: 859,138 sharesDec 31, 2025: 777,869 sharesJan 15, 2026: 741,610 sharesJan 30, 2026: 769,534 sharesFeb 13, 2026: 811,612 sharesFeb 27, 2026: 824,295 sharesMar 13, 2026: 806,566 sharesMar 31, 2026: 913,271 sharesApr 15, 2026: 930,606 sharesApr 30, 2026: 1,060,249 sharesMay 15, 2026: 623,377 sharesMay 29, 2026: 498,119 sharesJun 15, 2026: 450,578 sharesJun 30, 2026: 488,731 sharesJul 15, 2026: 609,189 sharesJul 31, 2026: 615,869 sharesAug 14, 2026: 532,095 sharesAug 31, 2026: 520,659 sharesSep 15, 2026: 545,039 sharesSep 30, 2026: 513,287 sharesOct 15, 2026: 487,514 sharesOct 30, 2026: 454,453 shares
Short interest in FENC by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 2026454.5K−33.1K−6.8%116.8K3.89
Oct 15, 2026487.5K−25.8K−5.0%129.1K3.78
Sep 30, 2026513.3K−31.8K−5.8%133.2K3.85
Sep 15, 2026545.0K+24.4K+4.7%258.4K2.11
Aug 31, 2026520.7K−11.4K−2.2%255.9K2.03
Aug 14, 2026532.1K−83.8K−13.6%245.5K2.17
Jul 31, 2026615.9K+6.68K+1.1%115.9K5.32
Jul 15, 2026609.2K+120.5K+24.7%182.9K3.33
Jun 30, 2026488.7K+38.2K+8.5%366.0K1.34
Jun 15, 2026450.6K−47.5K−9.5%224.7K2.01
May 29, 2026498.1K−125.3K−20.1%356.0K1.40
May 15, 2026623.4K−436.9K−41.2%386.2K1.61
Apr 30, 20261.06M+129.6K+13.9%118.2K8.97
Apr 15, 2026930.6K+17.3K+1.9%177.1K5.25
Mar 31, 2026913.3K+106.7K+13.2%308.6K2.96
Mar 13, 2026806.6K−17.7K−2.2%126.1K6.40
Feb 27, 2026824.3K+12.7K+1.6%115.6K7.13
Feb 13, 2026811.6K+42.1K+5.5%105.7K7.68
Jan 30, 2026769.5K+27.9K+3.8%94.5K8.15
Jan 15, 2026741.6K−36.3K−4.7%134.3K5.52
Dec 31, 2025777.9K−81.3K−9.5%212.3K3.66
Dec 15, 2025859.1K−23.1K−2.6%149.8K5.74
Nov 28, 2025882.2K−191.6K−17.8%219.1K4.03
Nov 14, 20251.07M+92.9K+9.5%147.5K7.28
Oct 31, 2025980.9K−327.6K−25.0%71.9K13.64
Oct 15, 20251.31M+4.60K+0.4%74.0K17.69
Sep 30, 20251.30M−23.4K−1.8%112.1K11.63
Sep 15, 20251.33M+80.5K+6.5%47.9K27.70
Aug 29, 20251.25M−32.8K−2.6%63.3K19.69
Aug 15, 20251.28M−4.78K−0.4%68.1K18.78
Jul 31, 20251.28M−18.3K−1.4%45.6K28.18
Jul 15, 20251.30M−2.29K−0.2%69.4K18.76
Jun 30, 20251.31M−59.9K−4.4%83.9K15.56
Jun 13, 20251.36M−59.7K−4.2%83.2K16.40
May 30, 20251.42M−87.4K−5.8%144.6K9.85
May 15, 20251.51M+57.6K+4.0%62.6K24.14
Apr 30, 20251.45M+16.1K+1.1%43.3K33.59
Apr 15, 20251.44M−57.7K−3.9%100.0K14.38
Mar 31, 20251.50M+58.9K+4.1%98.1K15.25
Mar 14, 20251.44M−487.9K−25.3%137.3K10.47
Feb 28, 20251.93M−115.5K−5.7%39.8K48.34
Feb 14, 20252.04M+86.8K+4.4%51.4K39.73
Jan 31, 20251.95M−44.1K−2.2%59.3K32.92
Jan 15, 20252.00M+14.0K+0.7%64.2K31.10
Dec 31, 20241.98M−125.0K−5.9%87.9K22.57
Dec 13, 20242.11M+5.36K+0.3%146.8K14.36
Nov 29, 20242.10M+237.6K+12.7%207.1K10.16
Nov 15, 20241.87M+81.7K+4.6%133.5K13.98
Oct 31, 20241.78M−56.8K−3.1%84.3K21.17

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 FENC by settlement date
Settlement dateSharesPriceValue
Sep 25, 2026500$10.62$5.31K
Sep 16, 202612,034$10.64$128.0K
Aug 27, 20264,629$12.17$56.3K
Aug 25, 20268,280$11.40$94.4K
Aug 12, 2026557$12.78$7.12K
Aug 7, 20262,784$10.84$30.2K
Jul 28, 2026671$10.21$6.85K
Jul 20, 20268,526$10.50$89.5K
Jul 14, 20266$10.75$64.5
Jun 29, 20264,122$11.02$45.4K
Jun 24, 20264,352$10.30$44.8K
Jun 11, 202616$8.70$139.2
Jun 8, 20262$8.70$17.4
Jun 3, 20266,913$9.98$69.0K
May 22, 20268,106$9.97$80.8K
May 21, 20268,500$9.75$82.9K
May 20, 20269,476$9.76$92.5K
May 15, 20262,728$9.24$25.2K
May 6, 202660$6.72$403.2
Apr 10, 2026517$6.40$3.31K
Apr 8, 2026304$6.32$1.92K
Apr 7, 20261,118$6.42$7.18K
Mar 31, 2026100$5.77$577
Mar 23, 20265$7.32$36.6
Feb 25, 202655,580$8.91$495.2K
Feb 24, 20261$8.99$8.99
Feb 19, 202632,085$8.97$287.8K
Feb 18, 2026246$8.68$2.14K
Jan 20, 202632$7.59$242.88
Jan 16, 202632$7.46$238.72

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 FENC by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 12, 202640,3985,829115,49435.0%
Nov 11, 202648,8820125,40339.0%
Nov 10, 202630,944092,23333.5%
Nov 9, 202632,756089,43136.6%
Nov 6, 202645,411073,58961.7%
Nov 5, 202635,077072,15548.6%
Nov 4, 202616,162059,77227.0%
Nov 3, 202625,683064,54139.8%
Nov 2, 202645,436089,32050.9%
Oct 30, 202627,533079,76934.5%
Oct 29, 202629,790085,95534.7%
Oct 28, 202613,788059,91723.0%
Oct 27, 202611,440022,37351.1%
Oct 26, 202616,471037,80543.6%
Oct 23, 20269,304020,00246.5%
Oct 22, 20264,863028,02517.4%
Oct 21, 202614,279031,47545.4%
Oct 20, 20267,823026,17929.9%
Oct 19, 202617,764039,70344.7%
Oct 16, 202616,714038,48643.4%
Oct 15, 202612,924025,60250.5%
Oct 14, 202622,5564,90082,93827.2%
Oct 13, 202611,301082,08013.8%
Oct 12, 202610,16810025,77439.5%
Oct 9, 20266,167027,52622.4%
Oct 8, 20265,999019,40030.9%
Oct 7, 202614,571045,01632.4%
Oct 6, 202619,555038,99750.1%
Oct 5, 202621,444044,04048.7%
Oct 2, 202620,01220460,88132.9%

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 FENC
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2110,9022,87082,0781,33157.5%
Sep 28, 2026T2214,6576,06273,0231,27274.6%
Sep 21, 2026T2140,4505,26091,1261,21060.6%
Sep 14, 2026T2173,5836,032135,7851,50956.1%
Sep 7, 2026T2268,9437,901192,9371,65858.2%
Aug 31, 2026T2582,4279,337272,2982,02368.1%
Aug 24, 2026T2433,83911,185288,6142,17160.1%
Aug 17, 2026T2214,9899,809215,4061,43350.0%
Aug 10, 2026T2406,92611,831351,2622,26853.7%
Aug 3, 2026T2141,5095,620161,0101,67546.8%
Jul 27, 2026T2103,5683,99768,8171,20860.1%
Jul 20, 2026T2172,3965,877109,9941,39661.0%