The page is the record's research on the issuer — no analyst, no rating, no view. # Duolingo, Inc. (NASDAQ: DUOL) — research page As of 2026-11-08 · us-cm-kg · record version 1 ## Identity and listing The issuer is Duolingo, Inc., listed on NASDAQ under ticker DUOL, with ISIN US26603R1068. The LEI is not on the record. The security type is Corporate, the segment is not on the record, the sector is 7372 Services-Prepackaged Software, and the jurisdiction is United States, Delaware. The listing status is listed, not halted. ## The disclosure read The record holds 117 filings in the twelve months to 2026-11-08, across 60 filing days. The median gap between filing days is 3 days. The latency from the latest filing to the record date is 3 days. The latest filing is dated 2026-11-05 and is of type directors_dealings. The NASDAQ median cadence gap is 6.0 days and the NASDAQ median latency is 5.0 days, with a median of 52 filings across 4359 issuers. The sector median cadence gap is 5.0 days and the sector median latency is 4.5 days, with a median of 62.5 filings across 266 issuers. ## Auditor The auditor of record is Deloitte & Touche LLP, located in New York, New York. The record holds no auditor changes. ## Events and halts The record holds no listing, delisting or name change lines. The domicile change is not on the record, as EDGAR states no dated change of state of incorporation on a filing line. The segment move is not on the record, as the exchanges' tier transfers are not EDGAR filings. The halt flag is listed, not halted. ## Orderability The outcome is not determinable. The chapter's orderability section carries no client categories, so the outcome cannot name its client category. The rule version is acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, and the chapter is as of 2026-11-04. ## Coverage No research houses were found on the issuer's investor-relations pages read. ## Open research No openly published research notes were found on the record. ## Licensed Licensed research: none loaded. A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded. ## As-of depth The vintage is sealed. The issuer years sealed are 2021, 2022, 2023, 2024, 2025 and 2026. The market's earliest sealed date is 2021-01-04, and the live record began on 2026-09-12. ## Sources 8 source pages are named on this page; every value above carries its own source page and read date in the numbers. - https://www.sec.gov/files/company_tickers_exchange.json (identity.exchange) - https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data (identity.isin) - https://data.sec.gov/submissions/CIK0001562088.json (identity.jurisdiction) - https://mcp.us-cm-kg.ai/events/NASDAQ/DUOL (the disclosure lines) - https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts (the halt flag) - https://www.sec.gov/Archives/edgar/data/1562088/000162828026012494/duol-20251231.htm (the auditor) - https://mcp.us-cm-kg.ai/book/aio.json (the orderability chapter) - https://mcp.us-cm-kg.ai/record/NASDAQ/DUOL (the record) --- Allooloo Technologies Corp. · https://getresearch.ai/us/NASDAQ/DUOL · public-record only · the same page signed and receipted: get_research at https://mcp.getresearch.ai/mcp