ARCO — structural market context
Structural market context from public regulatory and market data, shown with its as-of dates. Descriptive only: nothing on this page is a recommendation, a prediction, or advice to buy or sell any security.
What changed
As of the close on Oct 21. Each line shows the earlier value, the later value and their dates.
Close $8.09 (Oct 21) vs $8.14 (Oct 20): −0.61%.
0.51× its 20-session average (2.4M) on Oct 21.
Includes pre- and post-market trading.
Short interest 2.5M shares (settlement Sep 30) vs 2.8M (Sep 15).
No new publication in this window. Latest: settlement Sep 30, published Oct 10.
Latest file (settlements Sep 15–Sep 30, published Oct 16): 2 days with fails, largest 62K shares on Sep 17.
Previous file (settlements Sep 1–Sep 14, published Sep 30): 5 days with fails, largest 26K shares on Sep 14.
No new publication in this window.
None recorded in this window.
ARCO short interest & days to cover
FINRA consolidated short interest, reported twice a month and published ~2 weeks after each settlement date. % of float uses reported free float. · as of 2026-09-30 (22d ago)
ARCO fails-to-deliver (FTD)
SEC fails-to-deliver files, published twice a month with ~6 weeks of delay.
ARCO insider buying and selling (Form 4)
Last 12 months, Form 4 codes P and S: 0 purchases · 3 sales
SEC Form 4 filings: purchases and sales reported on Form 4 (transaction codes P and S) only; grants and option exercises excluded. Attributed public records.
Frequently asked questions
More tickers starting with A
ARCO: the full history
Latest rows shown. Full history, market-wide screens, cluster detection and the context journal live in the dashboard.
Not financial advice. Trading involves risk. Descriptive structural context, never a recommendation.