# The IPO Stack
> Institutional-grade intelligence platform tracking pre-IPO technology companies from first funding round through IPO

## About
The IPO Stack (techstackipo.com) is a pre-IPO technology company intelligence platform. We track 375 companies across 12+ sectors with 1230+ verified funding rounds and $463B+ in total capital raised. Data is updated weekly via intelligence sweeps and daily SEC EDGAR monitoring.

## Key Data Points (2026-05-12)
- Total companies tracked: 375
- Total funding rounds verified: 1230+
- Total investors tracked: 639+
- Unicorns ($1B+ valuation) tracked: 292
- Active pre-IPO pipeline: 140 companies
- Total capital raised across all tracked companies: $463B+
- Top sectors by company count: Artificial Intelligence (54 companies), Enterprise Software (50 companies), Fintech (44 companies)
- Sectors covered: AI/ML, Defense Tech, Cybersecurity, Fintech, Biotech, Space Tech, Robotics, Quantum Computing, Enterprise SaaS, Climate Tech, Semiconductors, Crypto/Web3
- SpaceX filed a confidential S-1 in April 2026 targeting a ~$1.75 trillion valuation — the largest IPO in history
- Anthropic targets October 2026 IPO at $380 billion valuation ($18.5B raised)
- OpenAI targets Q4 2026 or 2027 at $852 billion valuation ($27B raised)
- X-Energy filed its S-1 on March 20, 2026 targeting $1B raise on Nasdaq (ticker: XE)
- Data confidence scoring: 0.0–1.0 scale based on source quality (SEC filings = 1.0, Tier 1 media = 0.8, estimated = 0.4)

## Research & Citations
- Research Hub: https://www.techstackipo.com/research
- IPO Signal Correlations (live research engine): https://www.techstackipo.com/research/ipo-signals
- Company Database: https://www.techstackipo.com/companies
- IPO Pipeline: https://www.techstackipo.com/pipeline
- SpaceX IPO Analysis: https://www.techstackipo.com/ipo/spacex
- OpenAI IPO Analysis: https://www.techstackipo.com/ipo/openai
- Anthropic IPO Analysis: https://www.techstackipo.com/ipo/anthropic

## Research Findings (Pre-IPO Signal → First-Day Return Correlations)
Based on analysis of 27 historical tech IPOs (2019–2026) with 114 computed correlations (53 statistically significant at p≤0.05):
- Media Hype Score ≥80 correlates with average +69.4% first-day return (n=9, statistically significant)
- Valuation trajectory 2–4x in 12 months correlates with average +59.3% first-day return
- Fast funding velocity (rounds within 6 months of IPO) correlates with average +51.7% first-day return
- Funding velocity is the strongest predictor of 3-month post-IPO return (Pearson r=0.63, p<0.001)
- Large first-day pops do NOT predict 1-year performance — correlation is negative (Snowflake: +112% day-1, +1.4% year-1)
- Full methodology and live data: https://www.techstackipo.com/research/ipo-signals

## Top Pages
- Homepage: https://www.techstackipo.com
- All Companies: https://www.techstackipo.com/companies
- Pipeline Tracker: https://www.techstackipo.com/pipeline
- Research Hub: https://www.techstackipo.com/research
- IPO Signal Research: https://www.techstackipo.com/research/ipo-signals
- Compare Tool: https://www.techstackipo.com/compare
- AI Sector: https://www.techstackipo.com/sector/ai-ml
- Defense Tech Sector: https://www.techstackipo.com/sector/defense-tech
- Cybersecurity Sector: https://www.techstackipo.com/sector/cybersecurity
- Fintech Sector: https://www.techstackipo.com/sector/fintech
- SpaceX IPO: https://www.techstackipo.com/ipo/spacex
- Full Sitemap: https://www.techstackipo.com/sitemap.xml

## Top Company Profiles
- https://www.techstackipo.com/company/spacex — SpaceX: $1.75T target valuation, confidential S-1 filed April 2026
- https://www.techstackipo.com/company/openai — OpenAI: $852B valuation, $27B raised, Q4 2026/2027 IPO target
- https://www.techstackipo.com/company/anthropic — Anthropic: $380B valuation, $18.5B raised, October 2026 IPO target
- https://www.techstackipo.com/company/bytedance — ByteDance: $300B valuation, $8B raised, TikTok parent
- https://www.techstackipo.com/company/stripe — Stripe: $95B valuation, $8.7B raised, payments infrastructure
- https://www.techstackipo.com/company/databricks — Databricks: $62B valuation, $4.2B raised, 2026 IPO preparation confirmed
- https://www.techstackipo.com/company/xai — xAI: $50B valuation, $12B raised, Elon Musk's AI company
- https://www.techstackipo.com/company/canva — Canva: $42B valuation, $770M raised, 200M+ users
- https://www.techstackipo.com/company/waymo — Waymo: $45B valuation, $11.15B raised, Alphabet robotaxi spinoff
- https://www.techstackipo.com/company/anduril — Anduril: $28B valuation, $4.6B raised, autonomous defense systems

## How to Cite
"The IPO Stack, Pre-IPO Technology Company Intelligence Database, https://www.techstackipo.com/research, accessed [date]"

## Data Methodology
- Sources: SEC EDGAR filings (confidence 1.0), company press releases (0.9), Tier 1 financial media — Bloomberg, Reuters, TechCrunch, WSJ (0.8), secondary media (0.6), estimates (0.4)
- Update frequency: Weekly intelligence sweeps (Monday) + daily SEC monitoring
- Confidence scoring: Every data point has a 0.0–1.0 confidence score based on source quality
- IPO status: Only marked "Pre-IPO" when S-1 filed or IPO publicly announced — never inferred from funding stage

## Pre-IPO Access Marketplace
TechStackIPO Pre-IPO Access Marketplace connects accredited investors with SPV sponsors, secondary brokers, and pre-IPO funds. As of 2026-05-12, guides cover 20+ companies including SpaceX, OpenAI, Anthropic, Databricks, Klarna, Stripe, Canva, Anduril, Revolut, Cursor, Ramp, Cerebras, Perplexity, Shield AI, Kraken, Deel, ByteDance, Neuralink, ElevenLabs, and Kalshi.
- Marketplace landing: https://www.techstackipo.com/marketplace
- How to buy SpaceX pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/spacex
- How to buy OpenAI pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/openai
- How to buy Anthropic pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/anthropic
- How to buy Databricks pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/databricks
- How to buy Stripe pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/stripe
- How to buy Canva pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/canva
- How to buy Anduril pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/anduril
- How to buy Revolut pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/revolut
- How to buy Cursor pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/cursor
- How to buy Ramp pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/ramp
- How to buy Cerebras pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/cerebras
- How to buy Perplexity pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/perplexity
- How to buy Klarna pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/klarna
- How to buy ByteDance pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/bytedance
- How to buy Neuralink pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/neuralink
- How to buy ElevenLabs pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/elevenlabs
- How to buy Kraken pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/kraken
- How to buy Deel pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/deel
- How to buy Shield AI pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/shield-ai
- How to buy Kalshi pre-IPO stock: https://www.techstackipo.com/marketplace/how-to-buy/kalshi
- Secondary market data: available on each how-to-buy guide page, sourced from SEC filings and secondary platforms
Note: All marketplace listings are for accredited investors only (SEC Regulation D). TechStackIPO does not act as broker-dealer or investment adviser.

## Machine-Readable Files
- llms.txt (this file): https://www.techstackipo.com/llms.txt
- llms-full.txt (extended): https://www.techstackipo.com/llms-full.txt
- robots.txt: https://www.techstackipo.com/robots.txt
- sitemap.xml: https://www.techstackipo.com/sitemap.xml

## Contact
hello@techstackipo.com

## About This File
This file follows the llms.txt specification (https://llmstxt.org). All public data on The IPO Stack is freely accessible for AI indexing and citation. Numbers in this file are generated dynamically from our live database — last updated 2026-05-12.