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HowShorted

COLAU short interest Nasdaq Global Market

Columbus Acquisition Corp Unit. 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
385
vs previous settlement
โˆ’12 (-3.0%)
days to cover
2.33
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for COLAU: 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
197
8 Jul 2026
Highest in window
597
24 Jun 2026
Days with a balance
12
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Columbus Acquisition Corp Unit 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 597 shares.

History

Every FINRA settlement we hold for COLAU, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 2026385โˆ’122.33
15 Jun 2026397+3251.30
15 Apr 2026720999.99
31 Mar 20267203.79
13 Mar 202672โˆ’351.00
27 Feb 202610701.00
13 Feb 202610701.00
30 Jan 202610701.00
15 Jan 202610703.45
31 Dec 2025107โˆ’621.00
15 Dec 2025169+621.00
28 Nov 2025107035.67
14 Nov 2025107โˆ’1011.07
31 Oct 2025208+1011.91
15 Oct 20251070999.99
30 Sep 202510702.18
15 Sep 20251070107.00
29 Aug 2025107017.83
15 Aug 20251070999.99
31 Jul 2025107โˆ’291.00
15 Jul 2025136โˆ’699.07
30 Jun 20252050999.99
13 Jun 20252050205.00
30 May 2025205+12102.50
15 May 2025193โˆ’477.72
30 Apr 2025240โˆ’9812.00
15 Apr 2025338+941.00
31 Mar 2025244+211.00
14 Mar 2025223โˆ’1,5881.00
28 Feb 20251,811โˆ’1,1411.00
14 Feb 20252,952+1,1131.00
31 Jan 20251,839โ€“1.00

Scroll inside the table for earlier settlements, back to 31 Jan 2025.

Questions

Frequently asked questions

What is COLAU's short interest?
385 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 12 from the previous settlement.
Why is there no percentage for COLAU?
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 COLAU's days to cover?
2.33 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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