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HowShorted

CALC short interest Nasdaq Capital Market

CalciMedica, Inc. Common Stock. 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
111,703
vs previous settlement
−15,981 (-12.5%)
days to cover
1.13
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for CALC 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 CALC days to cover

Fails to deliver

The SEC's fails-to-deliver figure for CALC: 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.

Latest balance
1
14 Sep 2026
Highest in window
2,080,623
25 Jun 2026
Days with a balance
108
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for CalciMedica, Inc. Common Stock 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 2.1M shares.

History

Every FINRA settlement we hold for CALC, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 2026111,703−15,9811.13
31 Aug 2026127,684−195,5571.28
14 Aug 2026323,241−179,8291.01
31 Jul 2026503,070−457,6611.81
15 Jul 2026960,731−691,2142.36
30 Jun 20261,651,945+1,375,6191.00
15 Jun 2026276,326+131,9701.00
29 May 2026144,356+7,9451.00
15 May 2026136,411−31,5421.00
30 Apr 2026167,953−204,2041.11
15 Apr 2026372,157+34,2401.49
31 Mar 2026337,917−121,1931.38
13 Mar 2026459,110+67,3141.00
27 Feb 2026391,796−36,0361.15
13 Feb 2026427,832−271,9961.00
30 Jan 2026699,828+619,3911.00
15 Jan 202680,437+9391.00
31 Dec 202579,498+8,8051.00
15 Dec 202570,693+6,2651.00
28 Nov 202564,428+11,7771.00
14 Nov 202552,651−3,0832.28
31 Oct 202555,734+9852.02
15 Oct 202554,749−10,5951.00
30 Sep 202565,344−6,6201.34
15 Sep 202571,964+8,7651.00
29 Aug 202563,199+27,6121.77
15 Aug 202535,587−11,7691.01
31 Jul 202547,356−43,1611.00
15 Jul 202590,517−16,3011.00
30 Jun 2025106,818−3,4242.78
13 Jun 2025110,242−2,7196.10
30 May 2025112,961−17,8276.93
15 May 2025130,788+61,0252.82
30 Apr 202569,763−38,3324.21
15 Apr 2025108,095−2,1294.39
31 Mar 2025110,224+6,0741.26
14 Mar 2025104,150+6,9862.10
28 Feb 202597,164+3,8936.44
14 Feb 202593,271+24,2103.21
31 Jan 202569,061−2,8992.12
15 Jan 202571,960+10,6796.52
31 Dec 202461,281−4,3251.61
13 Dec 202465,606+20,4491.00
29 Nov 202445,157−24,9361.90
15 Nov 202470,093−2,4831.00
31 Oct 202472,576+38,4181.29
15 Oct 202434,158−3,5331.63
30 Sep 202437,691+12,9081.41
13 Sep 202424,783+1,1651.00
30 Aug 202423,618+3981.00
15 Aug 202423,220−1,5431.71
31 Jul 202424,763+2,9861.00
15 Jul 202421,777−47,8081.00
28 Jun 202469,585+52,6091.00
14 Jun 202416,976−6,6143.83
31 May 202423,590−6,6111.00
15 May 202430,201−13,3102.52
30 Apr 202443,511+9,9042.86
15 Apr 202433,607−3,5661.46
28 Mar 202437,173+28,2892.70
15 Mar 20248,884−11,9381.00
29 Feb 202420,822−9441.76
15 Feb 202421,766+881.20
31 Jan 202421,678+3,9151.00
12 Jan 202417,763+5,9523.65
29 Dec 202311,811+3311.83
15 Dec 202311,480−7,1001.19
30 Nov 202318,580+6,9711.43
15 Nov 202311,609+6,0741.00
31 Oct 20235,535+2,6161.00
13 Oct 20232,919+1681.00
29 Sep 20232,751−2,6881.00
15 Sep 20235,439−2,5591.00
31 Aug 20237,998+3,7081.18
15 Aug 20234,290−5671.00
31 Jul 20234,857+1,1921.00
14 Jul 20233,665−11,0961.00
30 Jun 202314,761+13,4751.00
15 Jun 20231,286–1.00

Scroll inside the table for earlier settlements, back to 15 Jun 2023.

Questions

Frequently asked questions

What is CALC's short interest?
111,703 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 15,981 from the previous settlement.
Why is there no percentage for CALC?
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 CALC's days to cover?
1.13 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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