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CMS Energy Corp

CMSD
Exchange
NYSE
Industry
Electric & Other Services Combined
SEC CIK
0000811156

No open-market purchases or sales by CMS Energy Corp insiders were filed in the last 90 days; 2 institutions reported holding it in 13F filings for Q2 2026, worth $19.8K in total; no superinvestor holds it.

Other share classesCMSCMSACMSCCMS.PC

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
11.8K
Shares, settlement Oct 15, 2026
Change
−5.62K
−32.3% vs. Sep 30, 2026
Days to cover
1.00
Short interest ÷ average daily volume
Average daily volume
122.6K
Shares, as reported by FINRA
Short interest by settlement date
Oct 15, 2024: 21,592 sharesOct 31, 2024: 16,936 sharesNov 15, 2024: 18,571 sharesNov 29, 2024: 28,894 sharesDec 13, 2024: 28,640 sharesDec 31, 2024: 93,888 sharesJan 15, 2025: 69,998 sharesJan 31, 2025: 113,284 sharesFeb 14, 2025: 102,776 sharesFeb 28, 2025: 76,015 sharesMar 14, 2025: 78,386 sharesMar 31, 2025: 71,791 sharesApr 15, 2025: 30,767 sharesApr 30, 2025: 34,417 sharesMay 15, 2025: 36,386 sharesMay 30, 2025: 40,322 sharesJun 13, 2025: 47,728 sharesJun 30, 2025: 54,014 sharesJul 15, 2025: 62,124 sharesJul 31, 2025: 166,668 sharesAug 15, 2025: 259,471 sharesAug 29, 2025: 266,565 sharesSep 15, 2025: 72,589 sharesSep 30, 2025: 80,748 sharesOct 15, 2025: 52,725 sharesOct 31, 2025: 48,431 sharesNov 14, 2025: 36,129 sharesNov 28, 2025: 35,520 sharesDec 15, 2025: 7,358 sharesDec 31, 2025: 24,742 sharesJan 15, 2026: 68,727 sharesJan 30, 2026: 43,904 sharesFeb 13, 2026: 38,936 sharesFeb 27, 2026: 66,622 sharesMar 13, 2026: 8,558 sharesMar 31, 2026: 33,133 sharesApr 15, 2026: 25,576 sharesApr 30, 2026: 29,615 sharesMay 15, 2026: 78,737 sharesMay 29, 2026: 85,589 sharesJun 15, 2026: 56,048 sharesJun 30, 2026: 87,428 sharesJul 15, 2026: 48,047 sharesJul 31, 2026: 38,353 sharesAug 14, 2026: 5,924 sharesAug 31, 2026: 13,963 sharesSep 15, 2026: 11,929 sharesSep 30, 2026: 17,414 sharesOct 15, 2026: 11,797 shares
Short interest in CMSD by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 15, 202611.8K−5.62K−32.3%122.6K1.00
Sep 30, 202617.4K+5.49K+46.0%87.6K1.00
Sep 15, 202611.9K−2.03K−14.6%79.0K1.00
Aug 31, 202614.0K+8.04K+135.7%90.6K1.00
Aug 14, 20265.92K−32.4K−84.6%35.9K1.00
Jul 31, 202638.4K−9.69K−20.2%39.4K1.00
Jul 15, 202648.0K−39.4K−45.0%64.6K1.00
Jun 30, 202687.4K+31.4K+56.0%99.9K1.00
Jun 15, 202656.0K−29.5K−34.5%34.5K1.62
May 29, 202685.6K+6.85K+8.7%38.3K2.24
May 15, 202678.7K+49.1K+165.9%27.4K2.87
Apr 30, 202629.6K+4.04K+15.8%27.4K1.08
Apr 15, 202625.6K−7.56K−22.8%42.9K1.00
Mar 31, 202633.1K+24.6K+287.2%59.1K1.00
Mar 13, 20268.56K−58.1K−87.2%32.8K1.00
Feb 27, 202666.6K+27.7K+71.1%49.6K1.34
Feb 13, 202638.9K−4.97K−11.3%32.9K1.18
Jan 30, 202643.9K−24.8K−36.1%47.3K1.00
Jan 15, 202668.7K+44.0K+177.8%34.6K1.98
Dec 31, 202524.7K+17.4K+236.3%51.2K1.00
Dec 15, 20257.36K−28.2K−79.3%48.4K1.00
Nov 28, 202535.5K−609−1.7%34.9K1.02
Nov 14, 202536.1K−12.3K−25.4%32.4K1.11
Oct 31, 202548.4K−4.29K−8.1%25.8K1.88
Oct 15, 202552.7K−28.0K−34.7%25.8K2.05
Sep 30, 202580.7K+8.16K+11.2%31.1K2.60
Sep 15, 202572.6K−194.0K−72.8%58.7K1.24
Aug 29, 2025266.6K+7.09K+2.7%37.8K7.06
Aug 15, 2025259.5K+92.8K+55.7%30.3K8.57
Jul 31, 2025166.7K+104.5K+168.3%49.2K3.39
Jul 15, 202562.1K+8.11K+15.0%32.4K1.92
Jun 30, 202554.0K+6.29K+13.2%52.1K1.04
Jun 13, 202547.7K+7.41K+18.4%36.1K1.32
May 30, 202540.3K+3.94K+10.8%53.6K1.00
May 15, 202536.4K+1.97K+5.7%45.1K1.00
Apr 30, 202534.4K+3.65K+11.9%98.2K1.00
Apr 15, 202530.8K−41.0K−57.1%54.4K1.00
Mar 31, 202571.8K−6.59K−8.4%74.0K1.00
Mar 14, 202578.4K+2.37K+3.1%31.6K2.48
Feb 28, 202576.0K−26.8K−26.0%27.1K2.81
Feb 14, 2025102.8K−10.5K−9.3%26.4K3.89
Jan 31, 2025113.3K+43.3K+61.8%50.4K2.25
Jan 15, 202570.0K−23.9K−25.5%54.0K1.30
Dec 31, 202493.9K+65.2K+227.8%121.2K1.00
Dec 13, 202428.6K−254−0.9%45.4K1.00
Nov 29, 202428.9K+10.3K+55.6%58.0K1.00
Nov 15, 202418.6K+1.64K+9.7%32.8K1.00
Oct 31, 202416.9K−4.66K−21.6%67.2K1.00
Oct 15, 202421.6K+11.3K+110.6%82.9K1.00

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 CMSD by settlement date
Settlement dateSharesPriceValue
Oct 8, 2026114$19.86$2.26K
Oct 2, 2026294$20.34$5.98K
Sep 30, 2026797$19.93$15.9K
Sep 25, 202636$20.37$733.32
Sep 24, 20264,850$20.34$98.6K
Sep 23, 2026745$20.42$15.2K
Sep 22, 2026733$20.54$15.1K
Sep 21, 202663$20.45$1.29K
Sep 18, 2026314$20.45$6.42K
Sep 17, 2026334$20.29$6.78K
Sep 16, 20261,120$20.07$22.5K
Sep 10, 20262,603$20.55$53.5K
Sep 8, 2026553$20.69$11.4K
Sep 3, 2026888$20.79$18.5K
Sep 1, 2026317$21.16$6.71K
Aug 25, 20261,191$21.06$25.1K
Aug 13, 2026117$21.59$2.53K
Jul 29, 202610,552$22.12$233.4K
Jul 24, 202613$22.00$286
Jul 23, 202668$22.15$1.51K
Jul 22, 20262,013$22.20$44.7K
Jul 1, 2026110$21.90$2.41K
Jun 30, 20261,153$21.90$25.3K
Jun 29, 20262,846$21.77$62.0K
Jun 26, 2026425$21.93$9.32K
Jun 9, 20263,891$22.41$87.2K
Jun 8, 20263,891$22.52$87.6K
Jun 5, 202697$22.65$2.20K
May 26, 20261,385$22.73$31.5K
May 20, 2026214$22.75$4.87K

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 CMSD by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 9, 20268,574044,47319.3%
Nov 6, 202613,58692533,68540.3%
Nov 5, 202615,250041,82136.5%
Nov 4, 202615,621043,66535.8%
Nov 3, 202613,124050,78825.8%
Nov 2, 202610,4271,41437,85127.5%
Oct 30, 202613,1631,06233,67839.1%
Oct 29, 202615,219036,10642.2%
Oct 28, 202622,8652095,90423.8%
Oct 27, 202625,3499186,32329.4%
Oct 26, 202616,965039,12043.4%
Oct 23, 202612,52155032,15338.9%
Oct 22, 202612,289031,84338.6%
Oct 21, 202619,776073,21127.0%
Oct 20, 202612,553030,64341.0%
Oct 19, 202612,647036,29234.8%
Oct 16, 2026130,0420170,79476.1%
Oct 15, 202613,122520142,7499.2%
Oct 14, 20269,38520038,95324.1%
Oct 13, 20266,0710423,5711.4%
Oct 12, 202616,566046,29735.8%
Oct 9, 202621,6654051,10942.4%
Oct 8, 202610,052028,32035.5%
Oct 7, 202610,9204832,70333.4%
Oct 6, 202612,017034,24935.1%
Oct 5, 202611,383027,89440.8%
Oct 2, 202623,23332539,11459.4%
Oct 1, 202628,597050,41656.7%
Sep 30, 202616,115032,06050.3%
Sep 29, 202611,72415130,50538.4%

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 CMSD
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T218,326269155,9691,61110.5%
Sep 28, 2026T223,580803171,4861,43912.1%
Sep 21, 2026T221,186268175,6441,49210.8%
Sep 14, 2026T279,187618531,8821,51613.0%
Sep 7, 2026T210,585265134,9931,3147.3%
Aug 31, 2026T221,589570110,1181,40216.4%
Aug 24, 2026T226,988375149,4601,55915.3%
Aug 17, 2026T214,383170524,5881,1642.7%
Aug 10, 2026T26,37218079,1081,1147.5%
Aug 3, 2026T217,7171,100104,3511,18214.5%
Jul 27, 2026T223,78067482,4191,05122.4%
Jul 20, 2026T228,941590109,2021,29321.0%