Live valuations for private, pre-IPO companies — Anthropic, OpenAI, SpaceX, Anduril, Neura
Live valuations for private, pre-IPO companies — Anthropic, OpenAI, SpaceX, Anduril, Neuralink, Kalshi, Polymarket — in one call, via PreStocks Solana tokens backed 1:1 by SPV exposure. Per company: mark price and valuation, on-chain token price and implied valuation, the token's premium/discount, supply, and contract. The catalog's only pre-IPO feed. From x402stock
20000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-14
updated
Provider
x402stock.xyz · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x3070Fbb3803819fB5BdfE9286fdc6325A877fA85",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "20000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
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"queryParams": {},
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},
"output": {
"example": {
"as_of": "2026-06-06T00:27:47.493Z",
"attribution": "Source: PreStocks (prestocks.com) — Solana tokens backed 1:1 by SPV exposure to the underlying private company",
"companies": [
{
"contract_address": "PresTj4Yc2bAR197Er7wz4UUKSfqt6FryBEdAriBoQB",
"description": "Anduril builds AI-driven defense systems, including autonomous drones and perimeter sensors. Their platforms integrate real-time data and computer vision to enhance situational awareness for military and border security applications.\n\nANDURIL is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"implied_valuation": 99947316150,
"logo_url": "https://www.prestocks.com/logos/anduril.png",
"mark_price": 127.64,
"mark_valuation": 103744703531,
"name": "Anduril PreStocks",
"supply": 14390.747182,
"symbol": "ANDURIL",
"token_premium_percent": -3.66,
"token_price": 122.968,
"url": "https://www.prestocks.com/anduril"
},
{
"contract_address": "Pren1FvFX6J3E4kXhJuCiAD5aDmGEb7qJRncwA8Lkhw",
"description": "Anthropic is an AI research company developing Claude, a language model built with a strong focus on safety and interpretability. Their approach emphasizes ethical guardrails and transparent behavior to reduce the risk of harmful outputs while enabling sophisticated natural language capabilities.\n\nANTHROPIC is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"implied_valuation": 1476877462885,
"logo_url": "https://www.prestocks.com/logos/anthropic.png",
"mark_price": 1023.25,
"mark_valuation": 1676433761736,
"name": "Anthropic PreStocks",
"supply": 9554.916082,
"symbol": "ANTHROPIC",
"token_premium_percent": -11.9,
"token_price": 901.4462,
"url": "https://www.prestocks.com/anthropic"
},
{
"contract_address": "PreLWGkkeqG1s4HEfFZSy9moCrJ7btsHuUtfcCeoRua",
"description": "Kalshi is a CFTC-regulated prediction market where users trade event contracts on real-world outcomes. Contract prices reflect implied probabilities for events across politics, economics, sports, and more.\n\nKALSHI is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"implied_valuation": 18389542280,
"logo_url": "https://www.prestocks.com/logos/kalshi.png",
"mark_price": 604.24,
"mark_valuation": 21708276177,
"name": "Kalshi PreStocks",
"supply": 1476.997906,
"symbol": "KALSHI",
"token_premium_percent": -15.29,
"token_price": 511.8646,
"url": "https://www.prestocks.com/kalshi"
},
{
"contract_address": "PrekqLJvJ3qVdXmBGDiexvwUTF4rLFDa6HWS4HJbw9S",
"description": "Neuralink develops implantable brain-computer interfaces designed to enable direct communication between the human brain and computers. Their technology aims to treat neurological conditions and eventually augment human capabilities.\n\nNEURALINK is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"implied_valuation": 57348355821,
"logo_url": "https://www.prestocks.com/logos/neuralink.png",
"mark_price": 282.23,
"mark_valuation": 53931079208,
"name": "Neuralink PreStocks",
"supply": 4995.999226,
"symbol": "NEURALINK",
"token_premium_percent": 6.34,
"token_price": 300.1132,
"url": "https://www.prestocks.com/neuralink"
},
{
"contract_address": "PreweJYECqtQwBtpxHL171nL2K6umo692gTm7Q3rpgF",
"description": "OpenAI pioneers large-language models like GPT and DALL·E, enabling advanced AI applications. Their research emphasizes both cutting-edge capability and responsible deployment strategies.\n\nOPENAI is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"implied_valuation": 1110401674929,
"logo_url": "https://www.prestocks.com/logos/openai.png",
"mark_price": 1527.04,
"mark_valuation": 1273031389432,
"name": "OpenAI PreStocks",
"supply": 2002.908181,
"symbol": "OPENAI",
"token_premium_percent": -12.77,
"token_price": 1331.9607,
"url": "https://www.prestocks.com/openai"
},
{
"contract_address": "Pre8AREmFPtoJFT8mQSXQLh56cwJmM7CFDRuoGBZiUP",
"description": "Polymarket is a decentralized prediction market for real-world events. It leverages blockchain technology and market-driven pricing to provide real-time implied probabilities across politics, economics, sports, and more.\n\nPOLYMARKET is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"implied_valuation": 12821691278,
"logo_url": "https://www.prestocks.com/logos/polymarket.png",
"mark_price": 147.94,
"mark_valuation": 12844491607,
"name": "Polymarket PreStocks",
"supply": 4818.988067,
"symbol": "POLYMARKET",
"token_premium_percent": -0.18,
"token_price": 147.6774,
"url": "https://www.prestocks.com/polymarket"
},
{
"contract_address": "PreANxuXjsy2pvisWWMNB6YaJNzr7681wJJr2rHsfTh",
"description": "SpaceX engineers reusable launch vehicles and the Starlink satellite constellation for global broadband. Their focus on rapid reusability and vertical integration drives down launch costs and accelerates space access.\n\nSPACEX is a PreStocks issued token backed 1:1 by SPV exposure that tracks the price of the underlying private company.",
"implied_valuation": 1838317496767,
"logo_url": "https://www.prestocks.com/logos/spacex.png",
"mark_price": 795.49,
"mark_valuation": 2085951555556,
"name": "SpaceX PreStocks",
"supply": 8742.928256,
"symbol": "SPACEX",
"token_premium_percent": -11.87,
"token_price": 701.0533,
"url": "https://www.prestocks.com/spacex"
}
],
"count": 7,
"source": "x402stock",
"venue": "prestocks"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
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"queryParams": {
"properties": {},
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"type": {
"const": "http",
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},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"as_of": {
"description": "ISO 8601 timestamp when this response was generated.",
"type": "string"
},
"attribution": {
"description": "Required source-attribution string; pass through to end users.",
"type": "string"
},
"companies": {
"description": "Every PreStocks private company, most-valuable first.",
"items": {
"additionalProperties": false,
"properties": {
"contract_address": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"description": "Solana mint address of the PreStocks SPV token."
},
"description": {
"description": "Plain-language overview of the underlying private company, plus the token's 1:1 SPV-backing note.",
"type": "string"
},
"implied_valuation": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"description": "Company valuation in USD implied by the on-chain token_price."
},
"logo_url": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"description": "Company logo image URL."
},
"mark_price": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"description": "SPV mark price per token in USD — the underlying private company's marked value. NOT a last-trade price."
},
"mark_valuation": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"description": "Company valuation in USD implied by the SPV mark (mark_price basis)."
},
"name": {
"description": "PreStocks token name, e.g. 'Anthropic PreStocks'.",
"type": "string"
},
"supply": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"description": "Circulating token supply."
},
"symbol": {
"description": "PreStocks token symbol, e.g. ANTHROPIC, OPENAI, SPACEX. Use as the {symbol} path param.",
"type": "string"
},
"token_premium_percent": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"description": "token_price vs mark_price, in percent. Positive = token trades at a premium to the SPV mark; negative = discount."
},
"token_price": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"description": "Current on-chain token trading price in USD. Can diverge from mark_price — that gap is the premium/discount."
},
"url": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"description": "PreStocks company page URL."
}
},
"required": [
"symbol",
"name",
"description",
"mark_price",
"mark_valuation",
"token_price",
"implied_valuation",
"token_premium_percent",
"supply",
"contract_address",
"logo_url",
"url"
],
"type": "object"
},
"type": "array"
},
"count": {
"description": "Number of companies in `companies`.",
"type": "number"
},
"source": {
"const": "x402stock",
"type": "string"
},
"venue": {
"description": "Issuing venue for the tokens — always 'prestocks'.",
"type": "string"
}
},
"required": [
"source",
"as_of",
"venue",
"count",
"companies",
"attribution"
],
"type": "object"
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"required": [
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}
}Use it
curl
curl "https://x402stock.xyz/api/v1/private-stocks" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://x402stock.xyz/api/v1/private-stocks");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://x402stock.xyz/api/v1/private-stocks")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/5281.json, and this resource appears in /discovery/resources and /discovery/search.