Skip to main content
Livermore
Livermore
US stocksTW
ZHEN

Oruka Therapeutics, Inc.

ORKA
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0000907654

In the last 90 days, Oruka Therapeutics, Inc. insiders filed 0 open-market purchases and 17 sales; 256 institutions reported holding it in 13F filings for Q2 2026, worth $7.05B in total; Viking Global Investors is the only superinvestor holding 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
6.46M
Shares, settlement Oct 30, 2026
Change
+352.0K
+5.8% vs. Oct 15, 2026
Days to cover
7.06
Short interest ÷ average daily volume
Average daily volume
915.1K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 783,783 sharesNov 15, 2024: 656,338 sharesNov 29, 2024: 757,872 sharesDec 13, 2024: 845,596 sharesDec 31, 2024: 1,444,002 sharesJan 15, 2025: 1,869,541 sharesJan 31, 2025: 1,704,510 sharesFeb 14, 2025: 1,761,997 sharesFeb 28, 2025: 2,003,268 sharesMar 14, 2025: 1,546,604 sharesMar 31, 2025: 1,516,484 sharesApr 15, 2025: 2,362,301 sharesApr 30, 2025: 2,664,454 sharesMay 15, 2025: 2,719,671 sharesMay 30, 2025: 2,757,626 sharesJun 13, 2025: 2,799,233 sharesJun 30, 2025: 4,125,093 sharesJul 15, 2025: 3,815,431 sharesJul 31, 2025: 3,357,629 sharesAug 15, 2025: 4,304,534 sharesAug 29, 2025: 3,197,757 sharesSep 15, 2025: 3,066,858 sharesSep 30, 2025: 3,613,897 sharesOct 15, 2025: 3,997,576 sharesOct 31, 2025: 5,208,430 sharesNov 14, 2025: 5,249,677 sharesNov 28, 2025: 5,497,702 sharesDec 15, 2025: 5,830,860 sharesDec 31, 2025: 7,626,531 sharesJan 15, 2026: 5,241,278 sharesJan 30, 2026: 4,908,187 sharesFeb 13, 2026: 4,062,540 sharesFeb 27, 2026: 4,466,793 sharesMar 13, 2026: 3,644,487 sharesMar 31, 2026: 4,522,980 sharesApr 15, 2026: 5,537,531 sharesApr 30, 2026: 6,992,310 sharesMay 15, 2026: 6,251,854 sharesMay 29, 2026: 6,373,113 sharesJun 15, 2026: 6,896,890 sharesJun 30, 2026: 9,160,848 sharesJul 15, 2026: 8,833,223 sharesJul 31, 2026: 8,051,704 sharesAug 14, 2026: 8,303,245 sharesAug 31, 2026: 7,793,678 sharesSep 15, 2026: 7,623,327 sharesSep 30, 2026: 7,778,131 sharesOct 15, 2026: 6,112,214 sharesOct 30, 2026: 6,464,212 shares
Short interest in ORKA by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20266.46M+352.0K+5.8%915.1K7.06
Oct 15, 20266.11M−1.67M−21.4%841.4K7.26
Sep 30, 20267.78M+154.8K+2.0%1.23M6.32
Sep 15, 20267.62M−170.4K−2.2%656.7K11.61
Aug 31, 20267.79M−509.6K−6.1%840.5K9.27
Aug 14, 20268.30M+251.5K+3.1%732.7K11.33
Jul 31, 20268.05M−781.5K−8.9%961.2K8.38
Jul 15, 20268.83M−327.6K−3.6%1.42M6.24
Jun 30, 20269.16M+2.26M+32.8%2.14M4.29
Jun 15, 20266.90M+523.8K+8.2%1.13M6.08
May 29, 20266.37M+121.3K+1.9%1.28M4.97
May 15, 20266.25M−740.5K−10.6%1.75M3.57
Apr 30, 20266.99M+1.45M+26.3%2.67M2.62
Apr 15, 20265.54M+1.01M+22.4%1.37M4.04
Mar 31, 20264.52M+878.5K+24.1%901.0K5.02
Mar 13, 20263.64M−822.3K−18.4%487.2K7.48
Feb 27, 20264.47M+404.3K+10.0%286.4K15.60
Feb 13, 20264.06M−845.6K−17.2%353.4K11.49
Jan 30, 20264.91M−333.1K−6.4%552.7K8.88
Jan 15, 20265.24M−2.39M−31.3%475.4K11.02
Dec 31, 20257.63M+1.80M+30.8%904.5K8.43
Dec 15, 20255.83M+333.2K+6.1%408.7K14.27
Nov 28, 20255.50M+248.0K+4.7%418.8K13.13
Nov 14, 20255.25M+41.2K+0.8%468.4K11.21
Oct 31, 20255.21M+1.21M+30.3%301.3K17.29
Oct 15, 20254.00M+383.7K+10.6%577.7K6.92
Sep 30, 20253.61M+547.0K+17.8%731.0K4.94
Sep 15, 20253.07M−130.9K−4.1%136.8K22.42
Aug 29, 20253.20M−1.11M−25.7%135.7K23.56
Aug 15, 20254.30M+946.9K+28.2%151.9K28.33
Jul 31, 20253.36M−457.8K−12.0%143.1K23.47
Jul 15, 20253.82M−309.7K−7.5%204.5K18.66
Jun 30, 20254.13M+1.33M+47.4%513.8K8.03
Jun 13, 20252.80M+41.6K+1.5%146.3K19.14
May 30, 20252.76M+38.0K+1.4%156.8K17.59
May 15, 20252.72M+55.2K+2.1%124.2K21.90
Apr 30, 20252.66M+302.2K+12.8%184.2K14.46
Apr 15, 20252.36M+845.8K+55.8%525.5K4.50
Mar 31, 20251.52M−30.1K−2.0%213.8K7.09
Mar 14, 20251.55M−456.7K−22.8%210.3K7.35
Feb 28, 20252.00M+241.3K+13.7%242.5K8.26
Feb 14, 20251.76M+57.5K+3.4%294.1K5.99
Jan 31, 20251.70M−165.0K−8.8%276.2K6.17
Jan 15, 20251.87M+425.5K+29.5%328.0K5.70
Dec 31, 20241.44M+598.4K+70.8%542.3K2.66
Dec 13, 2024845.6K+87.7K+11.6%198.8K4.25
Nov 29, 2024757.9K+101.5K+15.5%210.1K3.61
Nov 15, 2024656.3K−127.4K−16.3%165.6K3.96
Oct 31, 2024783.8K+176.3K+29.0%124.7K6.29

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 ORKA by settlement date
Settlement dateSharesPriceValue
Oct 1, 202662,016$83.29$5.17M
Sep 25, 2026138,421$85.49$11.8M
Sep 21, 202654$94.96$5.13K
Sep 16, 2026349$92.20$32.2K
Sep 14, 202647$92.38$4.34K
Sep 3, 202610,927$91.63$1.00M
Aug 27, 20263,356$99.44$333.7K
Aug 26, 20265,101$101.82$519.4K
Aug 25, 20262,162$102.42$221.4K
Aug 24, 20267,427$107.96$801.8K
Aug 18, 20261,182$112.66$133.2K
Aug 13, 2026106,205$107.40$11.4M
Aug 12, 202630,438$104.68$3.19M
Aug 11, 2026102$105.14$10.7K
Aug 7, 20262,731$98.42$268.8K
Aug 6, 20264,751$97.19$461.7K
Jul 31, 2026476$97.86$46.6K
Jul 24, 20261,934$91.95$177.8K
Jul 22, 2026367$94.32$34.6K
Jul 20, 2026500$92.70$46.4K
Jul 17, 20263,592$83.04$298.3K
Jul 16, 20263$86.65$259.95
Jul 9, 2026116$84.40$9.79K
Jul 8, 2026115$84.50$9.72K
Jul 7, 2026536$83.13$44.6K
Jul 6, 2026150,722$85.21$12.8M
Jul 2, 202661$93.29$5.69K
Jul 1, 20262,082$95.17$198.1K
Jun 30, 20263,417$92.49$316.0K
Jun 29, 2026300,808$90.60$27.3M

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 ORKA by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 10, 2026491,778801,288,91738.2%
Nov 9, 2026256,5228,476781,85132.8%
Nov 6, 2026262,235433569,09446.1%
Nov 5, 2026290,5461,461376,08277.3%
Nov 4, 2026232,6272,847386,69260.2%
Nov 3, 2026184,2871,433340,91354.1%
Nov 2, 2026165,524396256,65464.5%
Oct 30, 2026197,9971,031272,97272.5%
Oct 29, 2026154,624254282,43254.7%
Oct 28, 2026189,1673,502392,21248.2%
Oct 27, 2026269,34818580,12746.4%
Oct 26, 2026642,886500951,40067.6%
Oct 23, 2026141,6780254,19955.7%
Oct 22, 2026124,1208284,13343.7%
Oct 21, 2026239,7960357,80067.0%
Oct 20, 2026240,7240287,52683.7%
Oct 19, 2026231,4080339,85168.1%
Oct 16, 2026228,2820608,75837.5%
Oct 15, 2026224,3626501,22944.8%
Oct 14, 2026135,7742331,51041.0%
Oct 13, 2026117,7980193,72960.8%
Oct 12, 2026135,37677225,04860.2%
Oct 9, 2026191,4400556,10734.4%
Oct 8, 2026213,192137542,19539.3%
Oct 7, 2026184,73926,789383,83348.1%
Oct 6, 2026226,88541499,91545.4%
Oct 5, 2026137,578110241,18557.0%
Oct 2, 2026159,9220253,27863.1%
Oct 1, 2026204,40639325,14062.9%
Sep 30, 2026290,72163,778515,59656.4%

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 ORKA
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T21,884,73534,532386,4056,45883.0%
Sep 28, 2026T21,474,04030,414567,3806,79872.2%
Sep 21, 2026T22,160,87036,569742,6077,70974.4%
Sep 14, 2026T21,337,88742,395658,7425,60867.0%
Sep 7, 2026T2813,24223,368221,5253,45578.6%
Aug 31, 2026T21,039,39226,734651,9215,66961.5%
Aug 24, 2026T2989,69624,297424,5336,53870.0%
Aug 17, 2026T21,324,80833,261440,8016,41775.0%
Aug 10, 2026T21,555,27135,386698,0297,06169.0%
Aug 3, 2026T2975,64129,959260,8904,64578.9%
Jul 27, 2026T21,560,17636,001465,9275,77777.0%
Jul 20, 2026T21,171,27828,524427,8567,02373.2%