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Companies
Tracked
KPIs
Signals
Videos
Catalysts
Venture Stages
Valuations
Funding
Editorial
Books
Graveyard
HQ Map

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Cybersecurity
Data Infrastructure
Defense
DevTools & AI Coding
Digital Identity
Energy
Food Tech
Health Tech
Longevity
Manufacturing
Materials Science
Mobility
Payments & Financial Infrastructure
Quantum Computing
Robotics
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Quantum Computing

Quantum Computing

Companies

All subsectors
Cloud Platforms
Component Suppliers
Control Systems
Diamond NV-Center Qubits
Error Correction & Control
Neutral-Atom Qubits
Photonic Qubits
Quantum Annealing
Quantum Networking
Quantum Software & Applications
Quantum-Safe Cryptography
Silicon-Spin Qubits
Superconducting Qubits
Trapped-Ion Qubits

All statuses
Acquired
Private
Public

1—
PsiQuantum
Photonic Qubits
2—
IonQ
Trapped-Ion Qubits
3—
Quantinuum
Trapped-Ion Qubits
4—
Classiq
Quantum Software & Applications
5—
Infleqtion
Neutral-Atom Qubits
6—
Atom Computing
Neutral-Atom Qubits
7—
Quantum Machines
Control Systems
8—
Xanadu
Photonic Qubits
9—
QuEra Computing
Neutral-Atom Qubits
10—
SandboxAQ
Quantum Software & Applications
11—
Nord Quantique
Superconducting Qubits
12—
IBM Quantum
Superconducting Qubits
13—
D-Wave Quantum
Quantum Annealing
14—
Q-CTRL
Error Correction & Control
15—
Alice & Bob
Superconducting Qubits
16—
IQM
Superconducting Qubits
17—
Quandela
Photonic Qubits
18—
Terra Quantum
Quantum Software & Applications
19—
Rigetti Computing
Superconducting Qubits
20—
QuantWare
Component Suppliers
21—
Pasqal
Neutral-Atom Qubits
22—
Riverlane
Error Correction & Control
23—
Google Quantum AI
Superconducting Qubits
24—
Multiverse Computing
Quantum Software & Applications
25—
Photonic
Silicon-Spin Qubits
26—
Silicon Quantum Computing
Silicon-Spin Qubits
27—
QC Ware
Quantum Software & Applications
28—
Oxford Quantum Circuits
Superconducting Qubits
29—
Universal Quantum
Trapped-Ion Qubits
30—
Qblox
Control Systems
31—
SEEQC
Superconducting Qubits
32—
QphoX
Quantum Networking
33—
Diraq
Silicon-Spin Qubits
34—
ORCA Computing
Photonic Qubits

Tracked

——
Qrypt
Quantum-Safe Cryptography
——
Quantum Brilliance
Diamond NV-Center Qubits
——
Agnostiq
Quantum Software & Applications
——
Bleximo
Superconducting Qubits
——
Qilimanjaro
Quantum Software & Applications
——
Strangeworks
Cloud Platforms

No roster changes this week. The roster is re-evaluated quarterly; read the methodology in the disclosures.

SFO --:--:--·AUS --:--:--·NYC --:--:--·LDN --:--:--·TYO --:--:--·PEK --:--:--·Editorial analysis, not financial advice.·About·FAQ·What’s new·Disclosures·Terms·Privacy·Usage policy·© fobi·

SFO --:--:--·AUS --:--:--·NYC --:--:--·LDN --:--:--·TYO --:--:--·PEK --:--:--·Editorial analysis, not financial advice.·About·FAQ·What’s new·Disclosures·Terms·Privacy·Usage policy·© fobi·

Theme

KPIs

Total funding YTD

$0

across 11 rounds

Companies tracked

0

10 countries

Largest round YTD

$0

Multiverse Computing · Series C

Median round YTD

$0

across 11 rounds

News volume · 7d

0

-72% vs prior 7d

Sentiment · 7d

0

Positive

0

Neutral

0

Negative

Hot company · 7d

IBM Quantum

7 mentions

Most patents filed · 12mo

01IonQ36
02PsiQuantum31
03Quantinuum16

Most raised · all-time

01Quantinuum$2.4B
02PsiQuantum$2.3B
03SandboxAQ$950M

Signals

Venture capital deployed · 2026 YTD

$3.7B

10 announced rounds

▲vs $3.0B in 2025

Sector market cap

$4.6T

8 public companies

▬largest = 94% of sector

Largest raise · trailing 12mo

$1.4B

IPO · Quantinuum

Catalysts ahead · next 12mo

9

1 conferences · 6 earnings · 2 launches

Companies tracked

40

8 public · 32 private

Videos

View all 497 →

Catalysts

Conferences

Major industry dates · soonest first

Nov 26, 2026Global Summit on Quantum Computing — Barcelona

Earnings Calls

Public roster companies · forecast from SEC filings

Oct 14, 2026· rumoredIBM Quantum — Q3 2026 earnings
Oct 26, 2026· rumoredIonQ — Q3 2026 earnings
Oct 28, 2026· rumoredGoogle Quantum AI — Q3 2026 earnings
Nov 4, 2026· rumoredRigetti Computing — Q3 2026 earnings
Nov 5, 2026· rumoredD-Wave Quantum — Q3 2026 earnings
Nov 10, 2026· rumoredInfleqtion — Q3 2026 earnings

Policy & Courts

Hearings · rulings · statutory deadlines

Nothing on the calendar yet.

Venture Stages

1

Seed

Universal Quantum$4.7M
Bleximo$1.5M
Qilimanjaro

2

Series A

Series A

Terra Quantum$75M
Silicon Quantum Computing$36M
Nord Quantique$30M
Qblox$26M
Strangeworks$24M
Quantum Brilliance$20M
ORCA Computing$15M
QphoX$9.4M

3

Series B

Series B

IQM$320M
QuEra Computing$230M
Photonic$200M
QuantWare$178M
Oxford Quantum Circuits$100M
Q-CTRL$59M
Quandela$53.5M
QC Ware$25M
Alice & Bob

4

Series C

Series C

Multiverse Computing$570M
Quantum Machines$170M
Atom Computing$100M
Riverlane$75M

5

Series D

Series D

PsiQuantum$1B
SandboxAQ$150M
SEEQC$30M

6

Public & Acquired

Public & Acquired

IonQ$650M
Infleqtion$550M
Rigetti Computing$458M
Xanadu$302M
Quantinuum$100M
D-Wave Quantum$49M
Agnostiq
Google Quantum AI
IBM Quantum

Valuations

Sized by valuation · area is proportional to market value

Zoom

Public caps as of Sep 15, 2026

Google Quantum AI

Public · real-time market capPrivate · last-round valuation

5 companies without valuation on file

Funding & analysis

AI Analysis

Quantum computing heating up with IPO exit wave and $570M mega-rounds in mid-2026

Updated Sep 2026 · 101 rounds

Company

15

16

17

18

19

20

21

22

23

24

25

26

Total Raised

Round sizes
Mega-rounds ($200M+) dominate 2025-2026: Multiverse Series C ($570M), Quantinuum IPO ($1.4B), PsiQuantum Series E ($1.0B), SandboxAQ Series D ($300M), QuEra Series B ($230M). Earlier cohorts capped at $100M. Median has shifted sharply upward past 18 months, driven by late-stage venture and public markets.
Stage mix
Late-stage capital concentration accelerates. Four IPOs in 2026 alone (Quantinuum, Xanadu, Infleqtion, D-Wave). Series B–E rounds comprise 70% of 2025-2026 volume; seed/Series A dropped to 15%. Only six seed rounds in past 24 months versus 22 in 2019-2021.
Lead investors
Tier-1 institutional players now dominant: BlackRock, Google, SoftBank, T. Rowe Price lead consecutive mega-rounds. Intel Capital, In-Q-Tel, National Grid Partners backing hardware deeptech. Venture generalists (Bessemer, Draper Esprit) quiet since 2021; Quantonation and Team8 remain active but no longer lead mega-deals.

FOBI Editorial

FOBI Editorial
Quantum computing’s hardware diversity is becoming a liability, not a strength.
08.09.26
FOBI Editorial
Quantum computing’s hardware wars are overshadowing the quiet rise of a software moat.
08.02.26
FOBI Editorial
Quantum computing’s error-correction arms race is masking a deeper tension: who actually pays for fault tolerance?
07.26.26
FOBI Editorial
Quantum computing’s real competition isn’t classical hardware—it’s the rise of probabilistic computing as a near-term alternative.
07.19.26

Books

As of 2026-08-01

Relevancy
Most recent

Jack D. Hidary · 2021
Quantum Computing: An Applied Approach
Written by a Google Quantum researcher, this book bridges theory and implementation for current NISQ-regime quantum processors, directly applicable to operators building quantum systems today.
Buy Read reviews
Phillip Kaye, Raymond Laflamme, and Michele Mosca · 2007
An Introduction to Quantum Computing
Landmark reference co-authored by founders of the Institute for Quantum Computing; establishes the mathematical rigor necessary for understanding quantum advantage.
Buy Read reviews
Michael A. Nielsen and Isaac L. Chuang · 2010
Quantum Computation and Quantum Information: 10th Anniversary Edition
The definitive reference text cited across quantum computing research; essential for understanding the theoretical underpinnings that justify sector investment and roadmaps.
Buy Read reviews
Scott Aaronson · 2013
Quantum Computing Since Democritus
Aaronson's witty exploration frames quantum computing within broader intellectual contexts—useful for operators understanding strategic implications beyond technical feasibility.
Buy Read reviews
Michio Kaku · 2023
Quantum Supremacy: How the Quantum Computer Revolution Will Change Everything
Popular science treatment that explains quantum advantage to non-technical stakeholders; valuable for operators communicating market opportunity and timeline realism to investors.
Buy Read reviews
Chris Bernhardt · 2019
Quantum Computing for Everyone
Essential for operators building teams and culture; explains core concepts without overwhelming mathematical prerequisites, enabling broader organizational fluency.
Buy Read reviews
Eric R. Johnston, Nic Harrigan, and Mercedes Gimeno-Segovia · 2019
Programming Quantum Computers: Essential Algorithms and Code Samples
Practical programmer's handbook that bridges algorithm theory to real-world implementation on quantum processors; essential for engineering teams developing quantum software.
Buy Read reviews
Brian Clegg · 2011
The Quantum Age: How the Physics of the Very Small has Transformed Our Lives
Context-setting history demonstrating how quantum mechanics became infrastructure; helps operators appreciate quantum computing as next leg of a century-long technological arc.
Buy Read reviews
Robert S. Sutor · 2024
Dancing with Qubits: From qubits to algorithms, embark on the quantum computing journey shaping our future, Second Edition
2024 edition captures the latest NISQ-era breakthroughs and quantum machine learning advances; IBM executive's experience brings practical perspective on near-term applications.
Buy Read reviews
Elias Combarro and Samuel González-Castillo · 2023
A Practical Guide to Quantum Machine Learning and Quantum Optimization
Directly addresses hybrid quantum-classical algorithms most likely to deliver practical advantage in NISQ era; essential reading for product and research teams.
Buy Read reviews
New
S. Karthikeyan, M. Akila, D. Sumathi, and T. Poongodi (editors) · 2025
Quantum Machine Learning: A Modern Approach
2025 publication captures emerging intersection of quantum and AI—the most commercially promising near-term application domain for quantum computing.
Buy Read reviews

Graveyard

Zapata Computing
Zapata Computing Holdings ceased operations in October 2024 after its board approved a wind-down plan. The company was unable to meet accelerated debt demands from Sandia Investment Management LP ($2.5M) and additional creditors (~$2.3M). A restructured successor entity, Zapata Quantum (OTC: ZPTA), emerged separately in late 2025 and completed a $15M financing in April 2026.
Obituary