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Scientific Industries Inc

SCND
Exchange
OTC
Industry
Laboratory Analytical Instruments
SEC CIK
0000087802

In the last 90 days, Scientific Industries Inc insiders filed 5 open-market purchases and 0 sales; no institution reported holding it in 13F filings for Q2 2026; 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
350
Shares, settlement Sep 30, 2026
Change
−750
−68.2% vs. Sep 15, 2026
Days to cover
1.00
Short interest ÷ average daily volume
Average daily volume
3.36K
Shares, as reported by FINRA
Short interest by settlement date
Nov 15, 2024: 200 sharesNov 29, 2024: 200 sharesDec 13, 2024: 100 sharesJan 15, 2025: 395 sharesJan 31, 2025: 289 sharesFeb 14, 2025: 1,822 sharesFeb 28, 2025: 834 sharesMar 14, 2025: 383 sharesMar 31, 2025: 328 sharesApr 15, 2025: 233 sharesApr 30, 2025: 144 sharesJun 13, 2025: 1,152 sharesJun 30, 2025: 1,152 sharesJul 15, 2025: 947 sharesJul 31, 2025: 782 sharesAug 15, 2025: 7,547 sharesAug 29, 2025: 6,475 sharesSep 15, 2025: 31,255 sharesSep 30, 2025: 4,400 sharesOct 15, 2025: 1,280 sharesNov 14, 2025: 734 sharesNov 28, 2025: 2,885 sharesDec 15, 2025: 6,563 sharesDec 31, 2025: 0 sharesJan 15, 2026: 1,417 sharesJan 30, 2026: 418 sharesFeb 13, 2026: 418 sharesFeb 27, 2026: 418 sharesMar 13, 2026: 317 sharesMay 29, 2026: 94 sharesAug 31, 2026: 1,100 sharesSep 15, 2026: 1,100 sharesSep 30, 2026: 350 shares
Short interest in SCND by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Sep 30, 2026350−750−68.2%3.36K1.00
Sep 15, 20261.10K00.0%2404.58
Aug 31, 20261.10K+1.10K+100.0%6.89K1.00
May 29, 202694+94+100.0%8911.00
Mar 13, 2026317−101−24.2%0> 999
Feb 27, 202641800.0%1.28K1.00
Feb 13, 202641800.0%2.72K1.00
Jan 30, 2026418−999−70.5%5.32K1.00
Jan 15, 20261.42K+1.42K+100.0%8.30K1.00
Dec 31, 2025Revised0−5.25K−100.0%32.6K0.00
Dec 15, 20256.56K+3.68K+127.5%10.7K1.00
Nov 28, 20252.88K+2.15K+293.1%18.9K1.00
Nov 14, 2025734+734+100.0%6.17K1.00
Oct 15, 20251.28K−3.12K−70.9%30.9K1.00
Sep 30, 20254.40K−26.9K−85.9%20.0K1.00
Sep 15, 202531.3K+24.8K+382.7%22.4K1.39
Aug 29, 20256.47K−1.07K−14.2%22.0K1.00
Aug 15, 20257.55K+6.76K+865.1%42.9K1.00
Jul 31, 2025782−165−17.4%3.98K1.00
Jul 15, 2025947−205−17.8%2.02K1.00
Jun 30, 20251.15K00.0%1.22K1.00
Jun 13, 20251.15K+1.15K+100.0%2404.80
Apr 30, 2025144−89−38.2%3571.00
Apr 15, 2025233−95−29.0%4.21K1.00
Mar 31, 2025328−55−14.4%2.50K1.00
Mar 14, 2025383−451−54.1%4.97K1.00
Feb 28, 2025834−988−54.2%7.42K1.00
Feb 14, 20251.82K+1.53K+530.5%18.6K1.00
Jan 31, 2025289−106−26.8%9.19K1.00
Jan 15, 2025395+395+100.0%10.9K1.00
Dec 13, 2024100−100−50.0%19.4K1.00
Nov 29, 202420000.0%9.62K1.00
Nov 15, 2024200+200+100.0%14.9K1.00

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 SCND by settlement date
Settlement dateSharesPriceValue
Nov 20, 20254,228$0.63$2.66K
Sep 23, 20254,984$0.74$3.69K
Sep 2, 20251,162$0.66$766.92
Jun 27, 202517$0.65$11.05
Mar 7, 2025100$1.04$104
Feb 28, 2025500$1.07$535
Feb 11, 20253,400$1.05$3.57K
Jan 30, 20254,900$1.03$5.05K
Jan 17, 20255,913$1.02$6.03K
Jan 16, 20251,013$1.04$1.05K
Jan 15, 20251,014$1.04$1.05K
Jan 14, 20252,599$1.04$2.70K
Jan 3, 202511,099$1.00$11.1K
Jan 2, 202511,099$0.90$9.99K
Dec 31, 20243,100$0.89$2.76K
Dec 20, 20247,700$0.91$7.01K
Dec 19, 20247,800$1.01$7.88K
Dec 18, 20247,800$1.01$7.88K
Dec 13, 20241,700$1.05$1.78K
Dec 12, 20241,800$1.12$2.02K
Dec 11, 20241,800$1.09$1.96K
Dec 10, 20241,800$1.10$1.98K
Dec 9, 20241,900$1.16$2.20K
Nov 19, 2024108$0.90$97.2

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.

FINRA has reported no daily short volume for SCND in the last two years.

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 SCND
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026OTCE––7703–
Sep 28, 2026OTCE3,45114,000346.3%
Sep 21, 2026OTCE1,14912,107235.3%
Sep 14, 2026OTCE––8,2505–
Sep 7, 2026OTCE––6003–
Aug 31, 2026OTCE––1001–
Aug 24, 2026OTCE––3,1045–
Aug 17, 2026OTCE––34,78119–
Aug 10, 2026OTCE––6,7088–
Aug 3, 2026OTCE––18,61210–
Jul 27, 2026OTCE––11,6009–
Jul 20, 2026OTCE––4,9003–