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Commvault Systems Inc

CVLT
Exchange
Nasdaq
Industry
Services-Prepackaged Software
SEC CIK
0001169561

In the last 90 days, Commvault Systems Inc insiders filed 0 open-market purchases and 4 sales; 434 institutions reported holding it in 13F filings for Q2 2026, worth $6.31B in total; Maverick Capital 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
3.48M
Shares, settlement Oct 30, 2026
Change
−193.4K
−5.3% vs. Oct 15, 2026
Days to cover
4.24
Short interest ÷ average daily volume
Average daily volume
821.2K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 846,888 sharesNov 15, 2024: 876,442 sharesNov 29, 2024: 914,631 sharesDec 13, 2024: 876,475 sharesDec 31, 2024: 1,077,173 sharesJan 15, 2025: 1,078,428 sharesJan 31, 2025: 1,233,775 sharesFeb 14, 2025: 1,639,210 sharesFeb 28, 2025: 1,582,885 sharesMar 14, 2025: 1,737,840 sharesMar 31, 2025: 1,857,175 sharesApr 15, 2025: 1,967,649 sharesApr 30, 2025: 2,126,800 sharesMay 15, 2025: 2,006,303 sharesMay 30, 2025: 1,955,951 sharesJun 13, 2025: 1,839,705 sharesJun 30, 2025: 1,778,010 sharesJul 15, 2025: 1,782,298 sharesJul 31, 2025: 1,517,080 sharesAug 15, 2025: 1,704,178 sharesAug 29, 2025: 1,574,865 sharesSep 15, 2025: 2,281,167 sharesSep 30, 2025: 2,612,465 sharesOct 15, 2025: 2,394,763 sharesOct 31, 2025: 2,771,239 sharesNov 14, 2025: 2,206,011 sharesNov 28, 2025: 1,971,127 sharesDec 15, 2025: 1,768,402 sharesDec 31, 2025: 1,602,835 sharesJan 15, 2026: 1,507,616 sharesJan 30, 2026: 1,403,731 sharesFeb 13, 2026: 1,675,553 sharesFeb 27, 2026: 1,765,430 sharesMar 13, 2026: 1,770,935 sharesMar 31, 2026: 1,942,592 sharesApr 15, 2026: 2,330,633 sharesApr 30, 2026: 2,183,649 sharesMay 15, 2026: 2,434,402 sharesMay 29, 2026: 2,674,870 sharesJun 15, 2026: 3,133,530 sharesJun 30, 2026: 3,656,432 sharesJul 15, 2026: 3,520,227 sharesJul 31, 2026: 3,206,482 sharesAug 14, 2026: 3,207,410 sharesAug 31, 2026: 3,111,668 sharesSep 15, 2026: 3,375,613 sharesSep 30, 2026: 3,453,214 sharesOct 15, 2026: 3,678,406 sharesOct 30, 2026: 3,484,977 shares
Short interest in CVLT by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20263.48M−193.4K−5.3%821.2K4.24
Oct 15, 20263.68M+225.2K+6.5%561.3K6.55
Sep 30, 20263.45M+77.6K+2.3%632.9K5.46
Sep 15, 20263.38M+263.9K+8.5%512.0K6.59
Aug 31, 20263.11M−95.7K−3.0%464.5K6.70
Aug 14, 20263.21M+9280.0%573.4K5.59
Jul 31, 20263.21M−313.7K−8.9%751.3K4.27
Jul 15, 20263.52M−136.2K−3.7%674.6K5.22
Jun 30, 20263.66M+522.9K+16.7%1.09M3.37
Jun 15, 20263.13M+458.7K+17.2%761.0K4.12
May 29, 20262.67M+240.5K+9.9%663.8K4.03
May 15, 20262.43M+250.8K+11.5%697.4K3.49
Apr 30, 20262.18M−147.0K−6.3%933.7K2.34
Apr 15, 20262.33M+388.0K+20.0%1.45M1.61
Mar 31, 20261.94M+171.7K+9.7%1.07M1.81
Mar 13, 20261.77M+5.50K+0.3%1.05M1.69
Feb 27, 20261.77M+89.9K+5.4%892.6K1.98
Feb 13, 20261.68M+271.8K+19.4%1.09M1.54
Jan 30, 20261.40M−103.9K−6.9%1.62M1.00
Jan 15, 20261.51M−95.2K−5.9%572.4K2.63
Dec 31, 20251.60M−165.6K−9.4%652.3K2.46
Dec 15, 20251.77M−202.7K−10.3%731.7K2.42
Nov 28, 20251.97M−234.9K−10.7%568.0K3.47
Nov 14, 20252.21M−565.2K−20.4%929.3K2.37
Oct 31, 20252.77M+376.5K+15.7%1.04M2.66
Oct 15, 20252.39M−217.7K−8.3%674.0K3.55
Sep 30, 20252.61M+331.3K+14.5%777.6K3.36
Sep 15, 20252.28M+706.3K+44.9%948.7K2.40
Aug 29, 20251.57M−129.3K−7.6%350.3K4.50
Aug 15, 20251.70M+187.1K+12.3%471.5K3.61
Jul 31, 20251.52M−265.2K−14.9%607.5K2.50
Jul 15, 20251.78M+4.29K+0.2%378.3K4.71
Jun 30, 20251.78M−61.7K−3.4%612.0K2.91
Jun 13, 20251.84M−116.2K−5.9%482.2K3.82
May 30, 20251.96M−50.4K−2.5%428.2K4.57
May 15, 20252.01M−120.5K−5.7%471.1K4.26
Apr 30, 20252.13M+159.2K+8.1%519.8K4.09
Apr 15, 20251.97M+110.5K+6.0%477.7K4.12
Mar 31, 20251.86M+119.3K+6.9%397.1K4.68
Mar 14, 20251.74M+155.0K+9.8%491.1K3.54
Feb 28, 20251.58M−56.3K−3.4%483.8K3.27
Feb 14, 20251.64M+405.4K+32.9%532.1K3.08
Jan 31, 20251.23M+155.3K+14.4%639.0K1.93
Jan 15, 20251.08M+1.25K+0.1%333.3K3.24
Dec 31, 20241.08M+200.7K+22.9%334.5K3.22
Dec 13, 2024876.5K−38.2K−4.2%253.3K3.46
Nov 29, 2024914.6K+38.2K+4.4%333.5K2.74
Nov 15, 2024876.4K+29.6K+3.5%432.0K2.03
Oct 31, 2024846.9K+37.1K+4.6%518.5K1.63

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 CVLT by settlement date
Settlement dateSharesPriceValue
Oct 7, 202620,000$154.98$3.10M
Sep 28, 20266,003$145.54$873.7K
Sep 23, 20262,775$146.41$406.3K
Sep 22, 20267,971$145.72$1.16M
Sep 21, 20263,222$144.54$465.7K
Sep 18, 20269,735$148.79$1.45M
Sep 11, 202638$131.55$5.00K
Sep 8, 20262,059$136.41$280.9K
Aug 13, 20265,697$141.74$807.5K
Aug 12, 20267$139.43$976.01
Aug 11, 20263,022$139.43$421.4K
Aug 7, 20263,052$133.36$407.0K
Aug 6, 2026840$133.17$111.9K
Jul 20, 20266,768$147.81$1.00M
Jul 15, 202645,201$148.63$6.72M
Jul 6, 20261,432$149.98$214.8K
Jun 30, 202613,805$144.18$1.99M
Jun 25, 202619$130.76$2.48K
Jun 24, 202653$125.23$6.64K
Jun 22, 2026267$130.03$34.7K
Jun 16, 20261$127.34$127.34
Jun 15, 20261,474$127.76$188.3K
Jun 10, 2026438$121.77$53.3K
Jun 9, 20267$122.09$854.63
Jun 4, 202627$120.85$3.26K
Jun 3, 202626$122.12$3.18K
Jun 2, 202626$122.39$3.18K
May 20, 202620$101.97$2.04K
May 19, 20265,636$105.94$597.1K
May 18, 202648,564$103.90$5.05M

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 CVLT by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 11, 2026125,2490172,10272.8%
Nov 10, 2026178,77581229,40277.9%
Nov 9, 2026200,6810262,06476.6%
Nov 6, 2026327,25047417,45978.4%
Nov 5, 2026336,46820400,42484.0%
Nov 4, 2026168,27745252,31966.7%
Nov 3, 2026125,79810205,78361.1%
Nov 2, 2026232,1750318,43172.9%
Oct 30, 2026186,9800268,70369.6%
Oct 29, 2026194,11530278,42269.7%
Oct 28, 2026194,7090316,44561.5%
Oct 27, 2026339,87827497,50868.3%
Oct 26, 2026401,4480725,38755.3%
Oct 23, 2026236,6340411,18557.5%
Oct 22, 2026225,66422332,62767.8%
Oct 21, 2026236,74720375,96563.0%
Oct 20, 202697,5790186,21552.4%
Oct 19, 2026136,93820174,78878.3%
Oct 16, 2026151,815248271,03656.0%
Oct 15, 2026157,98810229,04869.0%
Oct 14, 2026133,4790193,36269.0%
Oct 13, 2026140,3660201,10569.8%
Oct 12, 2026228,4922,455282,67680.8%
Oct 9, 2026175,918100213,00582.6%
Oct 8, 2026199,9690249,72280.1%
Oct 7, 2026188,1361278,72867.5%
Oct 6, 2026124,123175168,45873.7%
Oct 5, 2026140,8910174,50180.7%
Oct 2, 2026126,5650186,90567.7%
Oct 1, 2026117,7291,400192,59861.1%

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 CVLT
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2838,66926,502320,8009,37572.3%
Sep 28, 2026T2854,46129,073722,72910,15354.2%
Sep 21, 2026T2790,94926,385308,72511,08671.9%
Sep 14, 2026T21,138,52532,506508,60511,37669.1%
Sep 7, 2026T2632,87521,956211,7385,90874.9%
Aug 31, 2026T2673,08628,034343,6667,42766.2%
Aug 24, 2026T2655,27730,498232,5467,15973.8%
Aug 17, 2026T2740,39530,840353,8427,99867.7%
Aug 10, 2026T2705,45827,087854,5958,54545.2%
Aug 3, 2026T2787,97529,815657,60910,44854.5%
Jul 27, 2026T21,629,30542,719635,18613,27772.0%
Jul 20, 2026T2675,48421,682241,0196,97773.7%