Compare · ILMN vs QSI

ILMN vs QSI

Side-by-side comparison of Illumina Inc. (ILMN) and Quantum-Si Incorporated (QSI): market cap, price performance, sector, and recent activity on the wire.

Summary

  • ILMN operates in Health Care, while QSI operates in Industrials - the two are in different parts of the market.
  • ILMN is the larger of the two at $31.30B, about 123.9x QSI ($252.7M).
  • Over the past year, ILMN is up 71.8% and QSI is down 16.5% - ILMN leads by 88.2 points.
  • ILMN has been more active in the news (16 items in the past 4 weeks vs 4 for QSI).
  • ILMN has more recent analyst coverage (25 ratings vs 4 for QSI).
PerformanceILMN+71.76%QSI-16.48%
2025-11-14+0.00%2026-11-13
MetricILMNQSI
Company
Illumina Inc.
Quantum-Si Incorporated
Price
-
-
Market cap
$31.30B
$252.7M
1M return
-22.73%
-12.64%
1Y return
+71.76%
-16.48%
Industry
Medical Specialities
Industrial Machinery/Components
Exchange
NASDAQ
NASDAQ
IPO
2000
2020
News (4w)
16
4
Recent ratings
25
4
ILMN

Illumina Inc.

Illumina, Inc. provides sequencing and array-based solutions for genetic and genomic analysis. Its products and services serve customers in a range of markets enabling the adoption of genomic solutions in research and clinical settings for applications in the life sciences, oncology, reproductive health, agriculture, and other emerging segments. The company provides instruments and consumables used in genetic analysis; and genotyping and sequencing services, instrument service contracts, and development and licensing agreements. Its customers include genomic research centers, academic institutions, government laboratories, and hospitals, as well as pharmaceutical, biotechnology, commercial molecular diagnostic laboratories, and consumer genomics companies. The company markets and distributes its products directly to customers in North America, Europe, Latin America, and the Asia-Pacific region, as well as sells through life-science distributors in various markets within Europe, the Asia-Pacific region, Latin America, the Middle East, and Africa. It has a collaboration agreement with Geneseeq Technology Inc. to develop comprehensive in-vitro diagnostic (IVD) NGS testing kits for cancer. The company was incorporated in 1998 and is headquartered in San Diego, California.

QSI

Quantum-Si Incorporated

Quantum-Si incorporated operates first next-generation protein sequencing and genomics platform for healthcare industries. It offers a single molecule detection solution to decode the molecules of life, including sample preparation, single molecule, massively parallel, and protein identification. The company's technology has the applications in proteomics, single cell, transcriptomics, genomics, metabolomics, and drug testing and screening fields. The company is based in Guilford, Connecticut. Quantum-Si incorporated is a subsidiary of 4Catalyzer Corporation.

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