The page is the record's research on the issuer — no analyst, no rating, no view.

# Quantum-Si Inc (NASDAQ: QSI) — research page

As of 2026-11-08 · us-cm-kg · record version 1

## Identity and listing

The issuer is Quantum-Si Inc, listed on NASDAQ under ticker QSI, with ISIN US74765K1051. The LEI is not on the record, because no GLEIF record with the exact legal name in jurisdiction US-DE was found. The security type is Corporate, the sector is 3829 Measuring & Controlling Devices, NEC, and the jurisdiction is United States, Delaware. The segment is not on the record. The listing status is listed, not halted.

## The disclosure read

The record holds 74 filings across 25 filing days in the twelve months to 2026-11-08. The median gap between filing days is 8.5 days. The latest filing is dated 2026-11-05 and is of type results, 3 days before the record date. The NASDAQ median cadence gap is 6.0 days, with a median of 52 filings and a median latency of 5.0 days, across 4359 issuers. The 3829 sector median cadence gap is 6.2 days, with a median of 59.5 filings and a median latency of 8.0 days, across 10 issuers.

## Auditor

The auditor of record is PricewaterhouseCoopers LLP, located in San Diego, California. The record holds no auditor changes.

## Events and halts

The record holds one delisting line, dated 2026-06-10. No listing, name change or segment move lines are on the record. A domicile change is not on the record, because EDGAR states no dated change of state of incorporation on a filing line. The segment move is not on the record, because the exchanges' tier transfers are not EDGAR filings. The halt flag is listed, not halted.

## Orderability

The outcome is not determinable under rule version acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, as of chapter date 2026-11-04. The chapter's orderability section carries no client categories, so the outcome cannot name its client category.

## 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 record holds sealed years 2021, 2022, 2023, 2024, 2025 and 2026 for this issuer. The market's earliest sealed date is 2021-01-04. 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/CIK0001816431.json (identity.jurisdiction)
- https://mcp.us-cm-kg.ai/events/NASDAQ/QSI (the disclosure lines)
- https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts (the halt flag)
- https://www.sec.gov/Archives/edgar/data/1816431/000181643126000011/qsi-20251231.htm (the auditor)
- https://mcp.us-cm-kg.ai/book/aio.json (the orderability chapter)
- https://mcp.us-cm-kg.ai/record/NASDAQ/QSI (the record)

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