Quantum-Si Incorporated Class A

Stage 1 · Basing · week 3

As of Oct 22, 2026, Quantum-Si is in Stage 1, the basing phase, now in week 3 (since Oct 5, 2026). It closed at $1.15, 50.9% below its 52-week high and above its 200-day average, which is falling.

$1.15

-6.50% today

$252M · Micro cap

Market Neutral — Building

Pro read

Pro

Our read

Basing, not in an uptrend yet

Setup score

—

Momentum

Accelerating ⇈

Edge

—

Is QSI early, or has it already run? Pro answers that for every US stock we cover, after every close.

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Stage Cycle Timeline2023-08-16 → 2026-10-22

S4 25w

S4 21w

2023-08-162026-10-22

S1S2S3S4Setup score (0–10, dashed line at 5)

S2 6w → S3 3w → S4 10w → S1 11w → S4 4w → S1 5w → S2 2w → S3 1w → S4 25w → S1 5w → S2 10w → S3 7w → S4 4w → S1 3w → S2 8w → S3 1w → S4 7w → S1 2w → S2 6w → S3 2w → S4 21w → S1 7w → S4 11w → S1 3w current

Total tracked: 165 weeks across 24 stage runs.

QSI among Medical Devices88th of 141 by relative strength

All 141 →

Stocks in Medical Devices ranked by relative strength, with stage and one-month change
#	Stock	Stage	RS	1M
1	TXG10x Genomics, Inc.	Stage 2 · wk 48	99	−7.8%
2	RCELAvita Medical, Inc.	Stage 2 · wk 13	98	+40.8%
3	BFLYButterfly Network, Inc. Class A	Stage 2 · wk 26	98	−26.0%
4	HAEHaemonetics Corporation	Stage 2 · wk 17	96	+8.7%
5	GKOSGlaukos Corporation	Stage 2 · wk 25	96	+15.1%
6	AXGNAxogen, Inc.	Stage 3 · wk 2	95	−15.3%
7	NEOGNeogen Corporation	Stage 2 · wk 14	95	−11.7%
8	BVSBioventus Inc. Class A	Stage 2 · wk 15	95	+10.5%
…88	QSIQuantum-Si Incorporated Class A	Stage 1 · wk 3	23	+51.5%

vs 52W High

-50.9%

$0.70 lo$2.34 hi

50.9% below 52W high

Stock is basing below old highs. A volume-backed breakout to new highs would be the Stage 2 signal to watch.

Stage Maturity

Week 3

1w13w26w

Week 3, early base

How long this stock has been basing. Longer bases can produce stronger breakouts, but the breakout itself is the signal.

vs 200 DMA

20.7%

200 DMA: $0.95 · sloping down

Stock is testing its 200 DMA as part of the base. Reclaiming and holding above it is a key Stage 2 prerequisite.

Rel Volume

0.58x

vs 50-day avg

Volume in Stage 1 basing is typically quiet. A surge in volume on an upside breakout is the signal to watch.

Trend Health

↑ ⇈

Short-term trend rising strongly, and accelerating

Two reads of momentum. The arrow shows the direction of the short-term trend: rising (↑ or ↗), flat (→) or rolling over (↓). The ⇈ mark appears when our trend model reads the move as gaining speed on top of the longer trend. Strongest when both agree.

+51.5%

+49.4%

+22.2%

YTD

-0.9%

-50.9%

Scan Membership

Breakout Watch

Latest: 2025-06-17

4 appearances in last 60 days. First seen: 2023-08-01.

A stock that keeps qualifying week after week does so because its Stage 2 structure keeps holding. Staying power in the scan says more about the trend than any single appearance.

Recent Stage Timeline

2026-10-22S1

Wk 3 · Vol 0.58x

2026-10-21S1

Wk 3 · Vol 0.57x

2026-10-20S1

Wk 3 · Vol 1.03x

2026-10-19S1

Wk 3 · Vol 1.49x

2026-10-16S1

Wk 2 · Vol 1.34x

2026-10-15S1

Wk 2 · Vol 1.65x

2026-10-14S1

Wk 2 · Vol 0.96x

2026-10-13S1

Wk 2 · Vol 1.13x

2026-10-12S1

Wk 2 · Vol 1.94x

2026-10-09S1

Wk 1 · Vol 8.92x

2026-10-08S1

Wk 1 · Vol 1.29x

2026-10-07S1

Wk 1 · Vol 1.80x

Moving averages & range

50 DMA

$0.95

200 DMA

$0.95

52W High

$2.34

52W Low

$0.70

5D Low

$1.09

Resistance levels (recent highs)

20d High

$1.55

60d High

$1.55

120d High

$1.55

250d High

$2.34

Next resistance

+34.8%

to 20d High

ROE

-49.1%

Profit margin 0.0%

Dividend Yield

0.00%

P/B 1.4

Quantum-Si: quick answers

What stage is Quantum-Si in?

As of Oct 22, 2026, Quantum-Si (QSI) is in Stage 1, the basing phase. It entered Stage 1 on Oct 5, 2026 and is in week 3. What the four stages mean

Is Quantum-Si in an uptrend?

Not yet. Quantum-Si is in Stage 1, a base that can come before an uptrend. It trades 20.7% above its 200-day average, which is falling.

How far is Quantum-Si from its 52-week high?

Quantum-Si closed at $1.15 on Oct 22, 2026, 50.9% below its 52-week high of $2.34. Its 52-week low is $0.70.

How has Quantum-Si performed over the past year?

As of Oct 22, 2026, Quantum-Si is down 50.9% over the past year and down 0.9% so far in 2026.

Which sector and industry is Quantum-Si in?

Quantum-Si is in the Medical Devices industry, part of the Health Care sector.

About this companyHealth Care· Medical Devices

Quantum-Si incorporated, a life sciences company, develops proprietary, universal, and single-molecule detection platform applied to proteomics to enable next-gen protein sequencing (NGPS). The company offers Platinum and Platinum Pro NGPS instruments for single-molecule, amino acid level resolution, and automated data analysis; library preparation kits to prepare a customer's protein sample for sequencing; and sequencing kits, which contain the reagents and consumables used to perform NGPS. It also provides Platinum analysis software, a cloud-based solution that automates data analysis workflows and visualizes the sequencing results. The company was founded in 2013 and is headquartered in Branford, Connecticut.

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All analytics based on EOD data. Data as of 2026-10-22. Past data patterns are not indicative of future results. This page is a data analytics tool only.