Skip to main content
Livermore
Livermore
US stocksTW
ZHEN

Corcept Therapeutics Inc

CORT
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001088856

In the last 90 days, Corcept Therapeutics Inc insiders filed 0 open-market purchases and 17 sales; 425 institutions reported holding it in 13F filings for Q2 2026, worth $7.15B 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
8.59M
Shares, settlement Oct 15, 2026
Change
+48.0K
+0.6% vs. Sep 30, 2026
Days to cover
12.29
Short interest ÷ average daily volume
Average daily volume
698.6K
Shares, as reported by FINRA
Short interest by settlement date
Oct 15, 2024: 20,675,546 sharesOct 31, 2024: 18,798,697 sharesNov 15, 2024: 18,344,291 sharesNov 29, 2024: 17,051,615 sharesDec 13, 2024: 15,715,773 sharesDec 31, 2024: 15,958,163 sharesJan 15, 2025: 16,258,254 sharesJan 31, 2025: 15,811,989 sharesFeb 14, 2025: 15,392,421 sharesFeb 28, 2025: 16,042,575 sharesMar 14, 2025: 16,329,860 sharesMar 31, 2025: 16,526,709 sharesApr 15, 2025: 12,287,228 sharesApr 30, 2025: 13,183,760 sharesMay 15, 2025: 12,481,476 sharesMay 30, 2025: 12,635,387 sharesJun 13, 2025: 12,652,014 sharesJun 30, 2025: 11,446,765 sharesJul 15, 2025: 11,223,626 sharesJul 31, 2025: 11,045,208 sharesAug 15, 2025: 10,590,834 sharesAug 29, 2025: 10,881,585 sharesSep 15, 2025: 10,805,275 sharesSep 30, 2025: 10,644,876 sharesOct 15, 2025: 10,239,885 sharesOct 31, 2025: 11,046,701 sharesNov 14, 2025: 10,166,733 sharesNov 28, 2025: 10,341,891 sharesDec 15, 2025: 10,108,719 sharesDec 31, 2025: 9,148,004 sharesJan 15, 2026: 8,186,385 sharesJan 30, 2026: 9,277,014 sharesFeb 13, 2026: 10,042,591 sharesFeb 27, 2026: 12,465,750 sharesMar 13, 2026: 13,027,166 sharesMar 31, 2026: 12,449,551 sharesApr 15, 2026: 11,342,506 sharesApr 30, 2026: 10,710,814 sharesMay 15, 2026: 9,315,811 sharesMay 29, 2026: 8,793,063 sharesJun 15, 2026: 8,569,293 sharesJun 30, 2026: 8,641,452 sharesJul 15, 2026: 9,442,750 sharesJul 31, 2026: 9,819,732 sharesAug 14, 2026: 9,696,757 sharesAug 31, 2026: 9,399,154 sharesSep 15, 2026: 9,350,914 sharesSep 30, 2026: 8,540,393 sharesOct 15, 2026: 8,588,418 shares
Short interest in CORT by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 15, 20268.59M+48.0K+0.6%698.6K12.29
Sep 30, 20268.54M−810.5K−8.7%2.39M3.57
Sep 15, 20269.35M−48.2K−0.5%944.0K9.91
Aug 31, 20269.40M−297.6K−3.1%789.5K11.90
Aug 14, 20269.70M−123.0K−1.3%927.9K10.45
Jul 31, 20269.82M+377.0K+4.0%1.54M6.38
Jul 15, 20269.44M+801.3K+9.3%1.09M8.69
Jun 30, 20268.64M+72.2K+0.8%1.03M8.41
Jun 15, 20268.57M−223.8K−2.5%969.3K8.84
May 29, 20268.79M−522.7K−5.6%1.03M8.55
May 15, 20269.32M−1.40M−13.0%1.48M6.30
Apr 30, 202610.7M−631.7K−5.6%932.3K11.49
Apr 15, 202611.3M−1.11M−8.9%1.17M9.70
Mar 31, 202612.4M−577.6K−4.4%2.50M4.97
Mar 13, 202613.0M+561.4K+4.5%1.17M11.16
Feb 27, 202612.5M+2.42M+24.1%2.61M4.78
Feb 13, 202610.0M+765.6K+8.3%1.19M8.42
Jan 30, 20269.28M+1.09M+13.3%2.67M3.47
Jan 15, 20268.19M−961.6K−10.5%2.58M3.18
Dec 31, 20259.15M−960.7K−9.5%3.01M3.04
Dec 15, 202510.1M−233.2K−2.3%875.4K11.55
Nov 28, 202510.3M+175.2K+1.7%522.9K19.78
Nov 14, 202510.2M−880.0K−8.0%730.3K13.92
Oct 31, 202511.0M+806.8K+7.9%778.5K14.19
Oct 15, 202510.2M−405.0K−3.8%1.05M9.77
Sep 30, 202510.6M−160.4K−1.5%1.07M9.97
Sep 15, 202510.8M−76.3K−0.7%685.2K15.77
Aug 29, 202510.9M+290.8K+2.8%622.3K17.49
Aug 15, 202510.6M−454.4K−4.1%891.3K11.88
Jul 31, 202511.0M−178.4K−1.6%767.1K14.40
Jul 15, 202511.2M−223.1K−2.0%1.05M10.70
Jun 30, 202511.4M−1.21M−9.5%2.04M5.60
Jun 13, 202512.7M+16.6K+0.1%1.72M7.36
May 30, 202512.6M+153.9K+1.2%1.06M11.89
May 15, 202512.5M−702.3K−5.3%1.31M9.54
Apr 30, 202513.2M+896.5K+7.3%1.39M9.52
Apr 15, 202512.3M−4.24M−25.7%2.41M5.11
Mar 31, 202516.5M+196.8K+1.2%2.06M8.01
Mar 14, 202516.3M+287.3K+1.8%1.30M12.61
Feb 28, 202516.0M+650.2K+4.2%1.31M12.28
Feb 14, 202515.4M−419.6K−2.7%779.5K19.75
Jan 31, 202515.8M−446.3K−2.7%994.2K15.90
Jan 15, 202516.3M+300.1K+1.9%734.5K22.14
Dec 31, 202416.0M+242.4K+1.5%825.0K19.34
Dec 13, 202415.7M−1.34M−7.8%838.0K18.75
Nov 29, 202417.1M−1.29M−7.1%731.7K23.30
Nov 15, 202418.3M−454.4K−2.4%1.17M15.68
Oct 31, 202418.8M−1.88M−9.1%1.27M14.86
Oct 15, 202420.7M−836.5K−3.9%855.8K24.16

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 CORT by settlement date
Settlement dateSharesPriceValue
Oct 5, 202624,383$116.23$2.83M
Sep 17, 202670$111.81$7.83K
Sep 3, 202631,077$110.43$3.43M
Aug 28, 2026399$116.93$46.7K
Aug 21, 20261,245$121.05$150.7K
Aug 17, 20269,969$114.47$1.14M
Jul 31, 2026242,856$118.32$28.7M
Jul 28, 20262,575$91.12$234.6K
Jul 27, 202612$95.36$1.14K
Jul 7, 202624,396$91.61$2.23M
Jul 6, 20269,558$90.21$862.2K
Jul 2, 20269,892$88.48$875.2K
Jun 30, 2026170$87.89$14.9K
Jun 25, 2026752$81.56$61.3K
Jun 23, 2026318$79.71$25.3K
Jun 17, 202622,695$83.71$1.90M
Jun 16, 202624,342$83.12$2.02M
Jun 10, 2026173$77.49$13.4K
Jun 1, 202628$69.49$1.95K
May 28, 202615,790$66.65$1.05M
May 18, 20261,066$56.37$60.1K
May 5, 2026264$51.60$13.6K
May 1, 202699,904$46.52$4.65M
Apr 30, 202664$46.59$2.98K
Apr 23, 202693$46.57$4.33K
Apr 8, 202619$41.69$792.11
Apr 6, 202653,237$42.49$2.26M
Mar 16, 2026104$32.15$3.34K
Mar 13, 2026102$32.39$3.30K
Mar 12, 2026684$33.74$23.1K

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 CORT by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 9, 2026308,116473658,73646.8%
Nov 6, 2026352,2703,194578,72860.9%
Nov 5, 2026244,5753,823573,44642.7%
Nov 4, 2026496,4542,854915,47554.2%
Nov 3, 2026288,8071,576634,43545.5%
Nov 2, 2026312,885199678,07546.1%
Oct 30, 2026305,464317648,30347.1%
Oct 29, 2026269,9340517,50952.2%
Oct 28, 2026214,546500431,45949.7%
Oct 27, 2026152,7380367,23141.6%
Oct 26, 2026441,60415,684763,09957.9%
Oct 23, 2026707,19630,4491,207,27758.6%
Oct 22, 2026156,574250326,24548.0%
Oct 21, 202681,66928181,78044.9%
Oct 20, 202670,996182136,45652.0%
Oct 19, 202654,360117117,62746.2%
Oct 16, 2026105,544336253,90041.6%
Oct 15, 2026138,063236251,02955.0%
Oct 14, 2026159,5400265,69360.0%
Oct 13, 2026108,931600237,80945.8%
Oct 12, 202684,1635201,29041.8%
Oct 9, 2026114,8843,002201,23557.1%
Oct 8, 2026111,34232194,94357.1%
Oct 7, 2026134,41218220,61560.9%
Oct 6, 2026146,7390281,17852.2%
Oct 5, 2026155,8690299,16152.1%
Oct 2, 2026210,5002,533314,13767.0%
Oct 1, 2026165,233170335,88549.2%
Sep 30, 2026143,66457274,14252.4%
Sep 29, 2026157,4470349,93445.0%

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 CORT
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 19, 2026T11,331,20729,2381,015,49113,41456.7%
Oct 12, 2026T1836,50028,640455,21110,87764.8%
Oct 5, 2026T1854,25129,267627,82511,54257.6%
Sep 28, 2026T11,281,49636,269828,24210,20160.7%
Sep 21, 2026T11,194,41642,157768,1329,50160.9%
Sep 14, 2026T11,619,42642,6215,494,43810,90322.8%
Sep 7, 2026T1855,86833,142711,2688,72154.6%
Aug 31, 2026T11,023,67832,537789,44411,02656.5%
Aug 24, 2026T11,096,92533,7601,080,13610,79250.4%
Aug 17, 2026T11,017,66931,498600,3249,72662.9%
Aug 10, 2026T11,030,29535,130551,10410,23965.2%
Aug 3, 2026T11,217,30937,604956,71712,23756.0%