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ECARX Holdings Inc.

ECX
Exchange
Nasdaq
Industry
Services-Computer Integrated Systems Design
SEC CIK
0001861974

In the last 90 days, ECARX Holdings Inc. insiders filed 1 open-market purchase and 0 sales; 39 institutions reported holding it in 13F filings for Q2 2026, worth $21.9M in total; no superinvestor holds it.

Other share classesECXWW

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
7.26M
Shares, settlement Oct 30, 2026
Change
+1.28M
+21.3% vs. Oct 15, 2026
Days to cover
10.88
Short interest ÷ average daily volume
Average daily volume
667.0K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 207,249 sharesNov 15, 2024: 198,759 sharesNov 29, 2024: 174,672 sharesDec 13, 2024: 99,073 sharesDec 31, 2024: 61,312 sharesJan 15, 2025: 294,436 sharesJan 31, 2025: 491,699 sharesFeb 14, 2025: 87,812 sharesFeb 28, 2025: 593,908 sharesMar 14, 2025: 1,317,233 sharesMar 31, 2025: 3,288,881 sharesApr 15, 2025: 4,050,967 sharesApr 30, 2025: 4,829,043 sharesMay 15, 2025: 5,789,769 sharesMay 30, 2025: 5,117,687 sharesJun 13, 2025: 4,284,801 sharesJun 30, 2025: 8,667,444 sharesJul 15, 2025: 6,776,540 sharesJul 31, 2025: 8,937,534 sharesAug 15, 2025: 10,140,228 sharesAug 29, 2025: 7,577,720 sharesSep 15, 2025: 4,517,352 sharesSep 30, 2025: 3,129,445 sharesOct 15, 2025: 3,422,765 sharesOct 31, 2025: 2,002,303 sharesNov 14, 2025: 3,898,936 sharesNov 28, 2025: 3,264,642 sharesDec 15, 2025: 2,967,008 sharesDec 31, 2025: 3,132,857 sharesJan 15, 2026: 2,974,914 sharesJan 30, 2026: 4,043,999 sharesFeb 13, 2026: 3,590,910 sharesFeb 27, 2026: 2,559,323 sharesMar 13, 2026: 5,371,792 sharesMar 31, 2026: 4,402,476 sharesApr 15, 2026: 4,997,146 sharesApr 30, 2026: 3,322,632 sharesMay 15, 2026: 5,577,306 sharesMay 29, 2026: 4,581,265 sharesJun 15, 2026: 5,249,249 sharesJun 30, 2026: 5,649,834 sharesJul 15, 2026: 6,617,564 sharesJul 31, 2026: 6,932,353 sharesAug 14, 2026: 6,515,498 sharesAug 31, 2026: 6,372,120 sharesSep 15, 2026: 6,461,193 sharesSep 30, 2026: 5,971,158 sharesOct 15, 2026: 5,981,598 sharesOct 30, 2026: 7,258,097 shares
Short interest in ECX by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20267.26M+1.28M+21.3%667.0K10.88
Oct 15, 20265.98M+10.4K+0.2%938.4K6.37
Sep 30, 20265.97M−490.0K−7.6%1.20M4.98
Sep 15, 20266.46M+89.1K+1.4%1.35M4.79
Aug 31, 20266.37M−143.4K−2.2%584.6K10.90
Aug 14, 20266.52M−416.9K−6.0%670.0K9.73
Jul 31, 20266.93M+314.8K+4.8%688.2K10.07
Jul 15, 20266.62M+967.7K+17.1%788.5K8.39
Jun 30, 20265.65M+400.6K+7.6%4.52M1.25
Jun 15, 20265.25M+668.0K+14.6%1.60M3.28
May 29, 20264.58M−996.0K−17.9%1.26M3.64
May 15, 20265.58M+2.25M+67.9%1.22M4.56
Apr 30, 20263.32M−1.67M−33.5%1.05M3.18
Apr 15, 20265.00M+594.7K+13.5%832.7K6.00
Mar 31, 20264.40M−969.3K−18.0%3.94M1.12
Mar 13, 20265.37M+2.81M+109.9%9.11M1.00
Feb 27, 20262.56M−1.03M−28.7%2.11M1.21
Feb 13, 20263.59M−453.1K−11.2%3.33M1.08
Jan 30, 20264.04M+1.07M+35.9%5.41M1.00
Jan 15, 20262.97M−157.9K−5.0%2.46M1.21
Dec 31, 20253.13M+165.8K+5.6%4.10M1.00
Dec 15, 20252.97M−297.6K−9.1%3.37M1.00
Nov 28, 20253.26M−634.3K−16.3%2.93M1.11
Nov 14, 20253.90M+1.90M+94.7%12.0M1.00
Oct 31, 20252.00M−1.42M−41.5%4.25M1.00
Oct 15, 20253.42M+293.3K+9.4%1.75M1.95
Sep 30, 20253.13M−1.39M−30.7%1.59M1.96
Sep 15, 20254.52M−3.06M−40.4%1.42M3.18
Aug 29, 20257.58M−2.56M−25.3%3.74M2.03
Aug 15, 202510.1M+1.20M+13.5%3.54M2.86
Jul 31, 20258.94M+2.16M+31.9%6.40M1.40
Jul 15, 20256.78M−1.89M−21.8%6.22M1.09
Jun 30, 20258.67M+4.38M+102.3%2.54M3.42
Jun 13, 20254.28M−832.9K−16.3%1.18M3.63
May 30, 20255.12M−672.1K−11.6%2.07M2.47
May 15, 20255.79M+960.7K+19.9%3.47M1.67
Apr 30, 20254.83M+778.1K+19.2%6.08M1.00
Apr 15, 20254.05M+762.1K+23.2%10.3M1.00
Mar 31, 20253.29M+1.97M+149.7%7.67M1.00
Mar 14, 20251.32M+723.3K+121.8%3.90M1.00
Feb 28, 2025593.9K+506.1K+576.3%3.31M1.00
Feb 14, 202587.8K−403.9K−82.1%1.59M1.00
Jan 31, 2025491.7K+197.3K+67.0%476.0K1.03
Jan 15, 2025294.4K+233.1K+380.2%2.09M1.00
Dec 31, 202461.3K−37.8K−38.1%1.20M1.00
Dec 13, 202499.1K−75.6K−43.3%527.7K1.00
Nov 29, 2024174.7K−24.1K−12.1%111.7K1.56
Nov 15, 2024198.8K−8.49K−4.1%21.8K9.10
Oct 31, 2024207.2K+44.4K+27.2%20.1K10.30

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 ECX by settlement date
Settlement dateSharesPriceValue
Oct 14, 202635,601$0.87$31.0K
Oct 13, 202620,698$0.87$18.0K
Oct 9, 202623,762$0.83$19.7K
Oct 8, 20266,043$0.85$5.14K
Oct 7, 202645,182$0.84$38.0K
Oct 1, 20261,628$1.05$1.71K
Sep 30, 202622,456$1.07$24.0K
Sep 28, 202648$1.09$52.32
Sep 25, 20261,357$1.10$1.49K
Sep 23, 2026310$1.10$341
Sep 22, 2026155,812$1.10$171.4K
Sep 21, 2026182,007$1.02$185.6K
Sep 18, 20262,483$1.06$2.63K
Sep 17, 202625,291$1.03$26.0K
Sep 16, 2026291,001$1.06$308.5K
Sep 15, 20267,703,356$1.10$8.47M
Sep 11, 20265,358$1.06$5.68K
Sep 8, 20267,571$1.05$7.95K
Sep 3, 20263,403$1.06$3.61K
Sep 2, 20263,178$1.05$3.34K
Sep 1, 2026501$1.04$521.04
Aug 31, 20261,783$1.05$1.87K
Aug 28, 20262,907$1.07$3.11K
Aug 27, 20264,774$1.05$5.01K
Aug 24, 20263,896$1.09$4.25K
Aug 18, 202621,625$1.12$24.2K
Aug 17, 202623,118$1.07$24.7K
Aug 14, 202628,357$1.08$30.6K
Aug 13, 202631,198$1.05$32.8K
Aug 12, 2026183,674$1.04$191.0K

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 ECX by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 13, 202666,4120111,20059.7%
Nov 12, 2026187,2750361,94551.7%
Nov 11, 2026142,7660644,89922.1%
Nov 10, 2026324,5440612,16053.0%
Nov 9, 2026149,3270234,56363.7%
Nov 6, 2026146,1850492,76529.7%
Nov 5, 2026837,4199,6111,213,44469.0%
Nov 4, 2026207,4544,128452,09545.9%
Nov 3, 2026218,2260352,12162.0%
Nov 2, 2026290,730321700,18341.5%
Oct 30, 2026224,70119,400429,52752.3%
Oct 29, 202680,1190157,51050.9%
Oct 28, 202624,576052,49046.8%
Oct 27, 2026184,0450248,46474.1%
Oct 26, 2026455,5280527,23286.4%
Oct 23, 2026158,27730,000189,48783.5%
Oct 22, 2026275,074120,254403,96168.1%
Oct 21, 202647,3750127,90137.0%
Oct 20, 2026232,4390374,47962.1%
Oct 19, 2026128,4312,407204,35462.8%
Oct 16, 2026514,16095,941660,64877.8%
Oct 15, 2026306,507122,414414,17374.0%
Oct 14, 2026267,2860320,26983.5%
Oct 13, 202695,0030110,28386.1%
Oct 12, 2026353,6200415,01585.2%
Oct 9, 202697,1810132,93773.1%
Oct 8, 2026146,8520195,30675.2%
Oct 7, 2026360,3190446,41580.7%
Oct 6, 2026383,2180440,90786.9%
Oct 5, 2026315,10025,115374,33784.2%

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 ECX
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2720,7353,4981,027,6821,79941.2%
Sep 28, 2026T21,408,4895,2821,635,3189,09446.3%
Sep 21, 2026T2937,42010,3291,601,70614,77436.9%
Sep 14, 2026T2504,1063,5439,009,0251,3625.3%
Sep 7, 2026T2351,4831,844867,0541,12328.8%
Aug 31, 2026T2583,7702,566347,74184862.7%
Aug 24, 2026T2610,1643,329370,8601,08262.2%
Aug 17, 2026T2484,5375,605585,60194845.3%
Aug 10, 2026T2428,4084,255697,1101,62338.1%
Aug 3, 2026T2562,3314,3671,235,2352,65931.3%
Jul 27, 2026T2338,3503,508861,6224,35228.2%
Jul 20, 2026T2290,1423,2501,250,4071,18318.8%