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CATF short interest NYSE Arca

American Century California Mu. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: exchange-traded product: its share count floats with creation and redemption.

Shares short
14,039
vs previous settlement
+4,371 (+45.2%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for CATF: 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
160
14 Sep 2026
Highest in window
46,937
5 Mar 2026
Days with a balance
175
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for American Century California Mu 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 47K shares.

History

Every FINRA settlement we hold for CATF, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202614,039+4,3711.00
31 Aug 20269,668−4,6791.54
14 Aug 202614,347+7,3071.59
31 Jul 20267,040−2,5101.94
15 Jul 20269,550+3,1352.16
30 Jun 20266,415+2,4941.00
15 Jun 20263,921−4,2601.00
29 May 20268,181−1,2191.43
15 May 20269,400+2,5881.40
30 Apr 20266,812+111.00
15 Apr 20266,801+1,1081.26
31 Mar 20265,693+1,9101.00
13 Mar 20263,783−1,2171.00
27 Feb 20265,000+4,1791.00
13 Feb 2026821−3,8881.00
30 Jan 20264,709−3,7291.00
15 Jan 20268,438+7,7542.29
31 Dec 2025684−18,6471.00
15 Dec 202519,331+3,8623.86
28 Nov 202515,469+11,0413.37
14 Nov 20254,428+3,9231.17
31 Oct 2025505−3401.00
15 Oct 2025845−3,9551.00
30 Sep 20254,800+1,2433.04
15 Sep 20253,557+2041.00
29 Aug 20253,353+3,3211.68
15 Aug 202532−1,5261.00
31 Jul 20251,558+1,0681.00
15 Jul 2025490+4851.00
13 Jun 20255−2,0421.00
30 May 20252,047+1,9132.40
15 May 2025134+1181.00
30 Apr 202516−6081.00
15 Apr 2025624+2441.00
31 Mar 2025380−9491.00
14 Mar 20251,329−3,8541.25
28 Feb 20255,183−5873.68
14 Feb 20255,770+2,6841.00
31 Jan 20253,086+2,5811.00
15 Jan 2025505+4081.00
31 Dec 202497−1241.00
13 Dec 2024221−1,6061.00
29 Nov 20241,827+1,0851.00
15 Nov 2024742−1,5151.00
31 Oct 20242,257−103,9331.07
15 Oct 2024106,190+104,7996.79
30 Sep 20241,391+2561.00
13 Sep 20241,135−1,2571.00
30 Aug 20242,392+2,1803.69
15 Aug 2024212−1881.00
31 Jul 2024400–1.00

Scroll inside the table for earlier settlements, back to 31 Jul 2024.

Questions

Frequently asked questions

What is CATF's short interest?
14,039 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 4,371 from the previous settlement.
Why is there no percentage for CATF?
Because no defensible share count exists to divide by: exchange-traded product: its share count floats with creation and redemption. An exchange-traded product's share count changes every day as units are created and redeemed, so no filing gives a stable count to divide by. FINRA's shares-short figure is exact; a percentage of it would not be.
What is CATF's days to cover?
1.00 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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