What is ATC's short interest?

115 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 57 from the previous settlement.

Why is there no percentage for ATC?

Because no defensible share count exists to divide by: no SEC filer maps to the symbol (funds, notes, preferreds, warrants and foreign listings). No SEC filer maps to this symbol in EDGAR's ticker file. That is the normal case for funds, exchange-traded notes, preferred shares, warrants, units and foreign listings, none of which file a share count we could divide by.

What is ATC's days to cover?

1.62 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.

ATC short interest Nasdaq Global Market

GraniteShares ETF Trust Granit. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: no SEC filer maps to the symbol (funds, notes, preferreds, warrants and foreign listings).

Shares short: 115
vs previous settlement: +57 (+98.3%)
days to cover: 1.62
Settlement date: 15 Sep 2026

Shares short over time

Days to cover

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

Fails to deliver

The SEC's fails-to-deliver figure for ATC: 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: 49; 14 Sep 2026
Highest in window: 968; 8 Jun 2026
Days with a balance: 53
Window: 16 Sep 2025 to 14 Sep 2026

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 968 shares.

History

Every FINRA settlement we hold for ATC, newest first. ʳ marks a figure FINRA itself flagged as revised.

Full reported short interest history
Settlement date	Shares short	Change	Days to cover
15 Sep 2026	115	+57	1.62
31 Aug 2026	58	−15	1.00
14 Aug 2026	73	−241	1.00
31 Jul 2026	314	+23	3.45
15 Jul 2026	291	−206	1.00
30 Jun 2026	497	+460	1.00
15 Jun 2026	37	−128	1.00
29 May 2026	165	−38	1.96
15 May 2026	203	−1,185,176	1.88
15 Aug 2022	1,185,379	−1,655,909	2.20
29 Jul 2022	2,841,288	−60,777	2.00
15 Jul 2022	2,902,065	+740,269	2.17
30 Jun 2022	2,161,796	+348,093	3.95
15 Jun 2022	1,813,703	−976,046	2.90
31 May 2022	2,789,749	−2,863,781	3.18
13 May 2022	5,653,530	+289,628	5.96
29 Apr 2022	5,363,902	+1,742,825	9.29
14 Apr 2022	3,621,077	+2,409,860	1.98
31 Mar 2022	1,211,217	−1,348,665	1.00
15 Mar 2022	2,559,882	−621,039	1.36
28 Feb 2022	3,180,921	+702,961	1.82
15 Feb 2022	2,477,960	+1,011,771	3.44
31 Jan 2022	1,466,189	+187,395	2.06
14 Jan 2022	1,278,794	+126,850	2.08
31 Dec 2021	1,151,944	−640,246	2.65
15 Dec 2021	1,792,190	−328,884	2.67
30 Nov 2021	2,121,074	+77,265	2.62
15 Nov 2021	2,043,809	+123,781	3.15
29 Oct 2021	1,920,028	−222,168	7.05
15 Oct 2021	2,142,196	+873,924	5.08
30 Sep 2021	1,268,272	+325,201	2.71
15 Sep 2021	943,071	+149,706	2.71
31 Aug 2021	793,365	−70,593	2.15
13 Aug 2021	863,958	−691,361	1.00
30 Jul 2021	1,555,319	+1,027,547	1.00
15 Jul 2021	527,772	−25,627	1.00
30 Jun 2021	553,399	+113,188	1.80
15 Jun 2021	440,211ʳ	+4,914	1.00
28 May 2021	435,297	+97,016	1.13
14 May 2021	338,281	+120,756	1.08
30 Apr 2021	217,525	+79,334	1.00
15 Apr 2021	138,191	−70,258	1.00
31 Mar 2021	208,449	+94,119	1.00
15 Mar 2021	114,330	+98,835	1.00
26 Feb 2021	15,495	+10,196	1.00
12 Feb 2021	5,299	–	1.00

Scroll inside the table for earlier settlements, back to 12 Feb 2021.

Questions

Frequently asked questions

What is ATC's short interest?: 115 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 57 from the previous settlement.
Why is there no percentage for ATC?: Because no defensible share count exists to divide by: no SEC filer maps to the symbol (funds, notes, preferreds, warrants and foreign listings). No SEC filer maps to this symbol in EDGAR's ticker file. That is the normal case for funds, exchange-traded notes, preferred shares, warrants, units and foreign listings, none of which file a share count we could divide by.
What is ATC's days to cover?: 1.62 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.

Ranked companies with a percentage: most shorted US stocks. Other symbols with counts only: shares short without a percentage. Browse by name: US companies A to Z.