Quantum-Si price to sales ratio QSI

Market value divided by revenue over the last twelve months, since 2024.

Today, Oct 23, 2026: 191×
2-year median: 89.5×
Against its 2-year history: 98th; percentile: 0 is its lowest day, 100 its highest
2-year range: 46.2× to 199×
Peer median: 1.1×

Quantum-Si's price to sales ratio is 191× as of Oct 23, 2026.

That is above its 2-year median of 89.5×, higher than on 98% of days in the last 2 years.

Over that time it ranged from 46.2× in Nov 2024 to 199× in May 2024.

The median for 10 industrial machinery stocks of a similar size is 1.1×.

Price to sales ratio over time

Open the interactive chart, with overlays and comparisons

Year by year

Year	End of year	Low	High
2026 so far	191×	63.8×	191×
2025	83.4×	64.1×	167×
2024	81.9×	46.2×	199×

Against its peers

Companies in Industrial - Machinery nearest Quantum-Si's size, closest first, today.

Company	Price to sales ratio
QSIQuantum-Si	191×
TWINTwin Disc	0.9×
PPIHPerma-Pipe International	1.0×
LYTSLSI Industries	1.1×
GHMGraham	3.0×
PSIXPower Solutions International	1.6×
TNCTennant	0.9×
ENREnergizer	0.5×
EPACEnerpac Tool	2.9×
SPBSpectrum Brands	0.6×
GRCGorman Rupp	2.8×
Peer median	1.1×

What the price to sales ratio tells you

Market value divided by revenue over the last twelve months. Useful for companies with little or no profit yet, since sales are harder to make negative than earnings.

Ignores margins entirely. A software company at 10× sales with 30% margins can be cheaper than a grocer at 1× sales with 2% margins.

More on Quantum-Si

Valuation data, not investment advice. Prices as of Oct 23, 2026. Reported figures come from the company's filings with the SEC.