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HowShorted

CDIOW short interest Nasdaq Capital Market

Cardio Diagnostics Holdings In. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: an SEC filer exists but no defensible share count is available yet.

Shares short
26,332
vs previous settlement
−245 (-0.9%)
days to cover
7.90
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for CDIOW shares short

Days to cover

FINRA's own figure: reported shares short divided by the security's average daily trading volume, published alongside each settlement.

Aggregate net short position time series for CDIOW days to cover

Fails to deliver

The SEC's fails-to-deliver figure for CDIOW: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Last balance on file
23,618
3 Mar 2026
Highest in window
24,440
2 Mar 2026
Days with a balance
51
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Cardio Diagnostics Holdings In fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 24K shares.

History

Every FINRA settlement we hold for CDIOW, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202626,332−2457.90
31 Aug 202626,577+5,8602.05
14 Aug 202620,717+8,3494.93
31 Jul 202612,368+7,9593.77
15 Jul 20264,409+1,7251.00
30 Jun 20262,684+1002.63
15 Jun 20262,584−20,1041.00
29 May 202622,688−6,1129.76
15 May 202628,800+3,5921.40
30 Apr 202625,208+23,4002.32
15 Apr 20261,808+1,1001.00
31 Mar 2026708−3,1821.00
13 Mar 20263,890−3,3751.00
27 Feb 20267,265+6,3821.00
13 Feb 2026883−4991.00
30 Jan 20261,382−4,0671.00
15 Jan 20265,449−1,3361.00
31 Dec 20256,785+5,3111.00
15 Dec 20251,474+3181.00
28 Nov 20251,156+4741.00
14 Nov 202568201.00
31 Oct 2025682−3,0841.00
15 Oct 20253,766+2,9151.00
30 Sep 2025851−1881.00
15 Sep 20251,039−291.00
29 Aug 20251,068−1,1521.00
15 Aug 20252,220−5,0181.00
31 Jul 20257,238−2,8861.00
15 Jul 202510,124+6,4511.00
30 Jun 20253,673+3,0911.00
13 Jun 2025582−4,4591.00
30 May 20255,041+4,4591.00
15 May 2025582−7,7421.00
30 Apr 20258,324+7,0281.00
15 Apr 20251,296−1,7531.00
31 Mar 20253,049+8271.00
14 Mar 20252,222−11,5541.00
28 Feb 202513,776+3401.00
14 Feb 202513,436+1141.00
31 Jan 202513,322−971.00
15 Jan 202513,419−13,7281.00
31 Dec 202427,147+1,0711.00
13 Dec 202426,076+13,0541.00
29 Nov 202413,022−2,4004.17
15 Nov 202415,422−7,3581.27
31 Oct 202422,780−8199.74
15 Oct 202423,599+3,8622.44
30 Sep 202419,737+3,4882.81
13 Sep 202416,24904.89
30 Aug 202416,249−8,0547.61
15 Aug 202424,303+5,5524.01
31 Jul 202418,751−4435.79
15 Jul 202419,194+1952.19
28 Jun 202418,999−4002.00
14 Jun 202419,399−9,6371.00
31 May 202429,036−16,2872.31
15 May 202445,323+7743.65
30 Apr 202444,549−328.15
15 Apr 202444,581−2363.59
28 Mar 202444,817+1,0679.40
15 Mar 202443,750+2,7714.46
29 Feb 202440,979+52111.59
15 Feb 202440,458−5,1496.96
31 Jan 202445,607+1642.23
12 Jan 202445,443+13,1741.00
29 Dec 202332,269−14,0641.24
15 Dec 202346,333−40,9121.33
30 Nov 202387,245+34,4661.00
15 Nov 202352,779+19,6801.00
31 Oct 202333,099−3,2948.40
13 Oct 202336,393−1,35228.70
29 Sep 202337,745−3,48722.44
15 Sep 202341,232−4,19419.82
31 Aug 202345,426−1,13875.84
15 Aug 202346,564−5,08515.93
31 Jul 202351,649−1,40524.89
14 Jul 202353,054+76243.10
30 Jun 202352,292+6,7216.83
15 Jun 202345,571+2,95332.00
31 May 202342,618−1,02311.02
15 May 202343,641−77042.91
28 Apr 202344,411+5,83413.72
14 Apr 202338,577+12,0472.96
31 Mar 202326,530−20,1001.82
15 Mar 202346,630+3,4541.00
28 Feb 202343,176−1331.00
15 Feb 202343,309+40,2701.00
31 Jan 20233,03905.87
13 Jan 20233,03901.95
30 Dec 20223,03901.00
15 Dec 20223,03901.00
30 Nov 20223,039−41.00
15 Nov 20223,043+3001.65
31 Oct 20222,743–1.00

Scroll inside the table for earlier settlements, back to 31 Oct 2022.

Questions

Frequently asked questions

What is CDIOW's short interest?
26,332 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 245 from the previous settlement.
Why is there no percentage for CDIOW?
Because no defensible share count exists to divide by: an SEC filer exists but no defensible share count is available yet. The symbol maps to an SEC filer, but its share count cannot be used yet. A newly listed company needs two cover-page counts on file before the first is trusted; a split or an unexplained jump pauses publication until a fresh SEC count corroborates it; a secondary share class publishes under the company's primary line; and a foreign filer's short count is in depositary-share units. This page upgrades to a percentage automatically once a defensible count exists.
What is CDIOW's days to cover?
7.90 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume, published in the same file and shown verbatim. We hold no volume data ourselves.
Is this the short float?
No. This page shows FINRA's share count only. Short float divides that count by the public float, and short interest as we publish it elsewhere divides it by shares outstanding from SEC filings. Neither denominator is available for this line, so neither ratio is shown.
How often does this update?
FINRA member firms report short positions as of the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. We ingest each file the day it appears and re-read recent settlements for revisions.

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