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Caris Life Sciences, Inc.

CAI
Exchange
Nasdaq
Industry
Services-Medical Laboratories
SEC CIK
0002019410

In the last 90 days, Caris Life Sciences, Inc. insiders filed 0 open-market purchases and 3 sales; 249 institutions reported holding it in 13F filings for Q2 2026, worth $2.75B in total; superinvestors Coatue Management and Duquesne Family Office hold 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
11.5M
Shares, settlement Oct 30, 2026
Change
−2.09M
−15.4% vs. Oct 15, 2026
Days to cover
3.98
Short interest ÷ average daily volume
Average daily volume
2.89M
Shares, as reported by FINRA
Short interest by settlement date
Jun 30, 2025: 1,360,785 sharesJul 15, 2025: 1,565,776 sharesJul 31, 2025: 1,294,477 sharesAug 15, 2025: 1,733,651 sharesAug 29, 2025: 1,927,319 sharesSep 15, 2025: 1,900,431 sharesSep 30, 2025: 3,486,992 sharesOct 15, 2025: 3,731,730 sharesOct 31, 2025: 4,190,099 sharesNov 14, 2025: 5,146,467 sharesNov 28, 2025: 6,840,155 sharesDec 15, 2025: 5,434,034 sharesDec 31, 2025: 6,203,433 sharesJan 15, 2026: 6,606,578 sharesJan 30, 2026: 5,895,197 sharesFeb 13, 2026: 6,082,231 sharesFeb 27, 2026: 6,509,779 sharesMar 13, 2026: 7,546,437 sharesMar 31, 2026: 10,294,979 sharesApr 15, 2026: 11,791,483 sharesApr 30, 2026: 12,733,076 sharesMay 15, 2026: 11,753,578 sharesMay 29, 2026: 10,729,443 sharesJun 15, 2026: 11,636,124 sharesJun 30, 2026: 14,175,752 sharesJul 15, 2026: 11,734,462 sharesJul 31, 2026: 14,757,565 sharesAug 14, 2026: 14,954,631 sharesAug 31, 2026: 13,684,372 sharesSep 15, 2026: 13,331,431 sharesSep 30, 2026: 13,891,975 sharesOct 15, 2026: 13,589,186 sharesOct 30, 2026: 11,494,819 shares
Short interest in CAI by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 202611.5M−2.09M−15.4%2.89M3.98
Oct 15, 202613.6M−302.8K−2.2%4.21M3.23
Sep 30, 202613.9M+560.5K+4.2%5.59M2.48
Sep 15, 202613.3M−352.9K−2.6%4.43M3.01
Aug 31, 202613.7M−1.27M−8.5%5.59M2.45
Aug 14, 202615.0M+197.1K+1.3%5.89M2.54
Jul 31, 202614.8M+3.02M+25.8%3.51M4.21
Jul 15, 202611.7M−2.44M−17.2%3.46M3.39
Jun 30, 202614.2M+2.54M+21.8%3.27M4.33
Jun 15, 202611.6M+906.7K+8.5%2.62M4.44
May 29, 202610.7M−1.02M−8.7%2.59M4.15
May 15, 202611.8M−979.5K−7.7%3.69M3.18
Apr 30, 202612.7M+941.6K+8.0%1.56M8.16
Apr 15, 202611.8M+1.50M+14.5%1.89M6.23
Mar 31, 202610.3M+2.75M+36.4%3.20M3.22
Mar 13, 20267.55M+1.04M+15.9%2.10M3.59
Feb 27, 20266.51M+427.5K+7.0%2.44M2.67
Feb 13, 20266.08M+187.0K+3.2%2.16M2.81
Jan 30, 20265.90M−711.4K−10.8%2.42M2.44
Jan 15, 20266.61M+403.1K+6.5%2.78M2.37
Dec 31, 20256.20M+769.4K+14.2%1.76M3.53
Dec 15, 20255.43M−1.41M−20.6%3.23M1.68
Nov 28, 20256.84M+1.69M+32.9%1.59M4.31
Nov 14, 20255.15M+956.4K+22.8%1.79M2.87
Oct 31, 20254.19M+458.4K+12.3%672.2K6.23
Oct 15, 20253.73M+244.7K+7.0%674.2K5.53
Sep 30, 20253.49M+1.59M+83.5%900.6K3.87
Sep 15, 20251.90M−26.9K−1.4%474.9K4.00
Aug 29, 20251.93M+193.7K+11.2%578.3K3.33
Aug 15, 20251.73M+439.2K+33.9%807.1K2.15
Jul 31, 20251.29M−271.3K−17.3%572.6K2.26
Jul 15, 20251.57M+205.0K+15.1%528.3K2.96
Jun 30, 20251.36M+1.36M+100.0%2.72M1.00

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 CAI by settlement date
Settlement dateSharesPriceValue
Oct 13, 2026138,306$29.69$4.11M
Oct 8, 20263,461$27.10$93.8K
Oct 7, 20269,450$27.46$259.5K
Sep 25, 2026390,037$32.27$12.6M
Sep 22, 20263,896$30.65$119.4K
Sep 21, 20262,848$29.98$85.4K
Sep 10, 2026321$24.03$7.71K
Sep 8, 20265,515$25.07$138.3K
Sep 4, 2026268,723$25.32$6.80M
Sep 3, 2026164,816$24.80$4.09M
Aug 25, 202649,582$26.13$1.30M
Aug 24, 202689,661$26.27$2.36M
Aug 21, 2026170,487$24.58$4.19M
Aug 20, 2026251,646$22.76$5.73M
Aug 19, 2026271,175$20.97$5.69M
Aug 18, 2026279,710$21.63$6.05M
Aug 17, 2026292,488$21.80$6.38M
Aug 12, 202621,864$23.14$505.9K
Aug 11, 20262,055$23.40$48.1K
Jul 31, 2026140,830$16.09$2.27M
Jul 30, 2026141,421$15.59$2.20M
Jul 17, 2026126$16.48$2.08K
Jul 16, 20261,512$17.46$26.4K
Jul 2, 202614,383$18.75$269.7K
Jun 25, 20261,690$18.15$30.7K
Jun 22, 20266,346$18.47$117.2K
Jun 15, 202630,469$17.97$547.5K
Jun 10, 202622,227$16.96$377.0K
May 27, 2026223,073$15.52$3.46M
May 14, 20262,906$14.69$42.7K

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 CAI by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 13, 2026601,9127751,217,99849.4%
Nov 12, 2026412,06501,698,73824.3%
Nov 11, 2026724,2554,7691,643,24744.1%
Nov 10, 2026623,0313031,262,28949.4%
Nov 9, 2026637,8105,3531,285,41249.6%
Nov 6, 20262,826,845138,6554,784,22459.1%
Nov 5, 20262,435,45686,6683,731,05665.3%
Nov 4, 2026524,2085001,418,65337.0%
Nov 3, 2026389,2241121,033,27537.7%
Nov 2, 2026441,6924,6681,239,65235.6%
Oct 30, 2026503,6941,3081,310,79438.4%
Oct 29, 2026404,8012,2561,403,03228.9%
Oct 28, 2026983,8695,4712,034,98548.3%
Oct 27, 2026962,0171,7381,504,04864.0%
Oct 26, 2026406,971627791,38251.4%
Oct 23, 2026402,29011,793869,13746.3%
Oct 22, 2026402,71618,137919,72543.8%
Oct 21, 2026550,5291,266915,04660.2%
Oct 20, 2026937,769205,8251,446,56364.8%
Oct 19, 2026286,5031,526618,86746.3%
Oct 16, 2026712,0805771,148,52462.0%
Oct 15, 20261,226,1512001,785,44968.7%
Oct 14, 20261,201,17813,3591,820,30566.0%
Oct 13, 2026911,96401,418,83864.3%
Oct 12, 20261,124,0363001,590,48370.7%
Oct 9, 20261,082,9223,4861,768,74161.2%
Oct 8, 2026646,9534311,246,37351.9%
Oct 7, 2026791,38710,5101,738,84745.5%
Oct 6, 20261,246,87211,0742,043,05961.0%
Oct 5, 2026778,1122,6401,401,64855.5%

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 CAI
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 19, 2026T13,648,33858,9081,595,24911,25769.6%
Oct 12, 2026T15,932,91569,6582,592,09012,43369.6%
Oct 5, 2026T16,151,73889,5222,619,48214,75270.1%
Sep 28, 2026T15,618,55695,0511,635,81315,78177.5%
Sep 21, 2026T18,579,438105,0533,642,24513,75170.2%
Sep 14, 2026T18,418,243109,2779,589,94317,30446.7%
Sep 7, 2026T13,551,81253,9681,490,82110,66070.4%
Aug 31, 2026T17,815,26784,7253,603,95714,59268.4%
Aug 24, 2026T17,077,18569,64811,639,47714,34537.8%
Aug 17, 2026T17,729,26189,9803,505,27816,88568.8%
Aug 10, 2026T16,404,06387,8263,460,73713,45464.9%
Aug 3, 2026T112,522,685131,3293,686,51817,87577.3%