Halo values each car as a range and shows the exact sales behind it, drawn from a verified ledger of 17,659 sales across 199 models and 18 marques.
Read the latest Market Report: Q3 2026 Market Report
“I see the right cars as works of art… Those cars deserve a record as careful as the one we keep for paintings.”
Peter Grant grew up in his grandfather’s garage, raced his own Big Healey at Castle Combe and put 22,000 miles on his first exotic, a Ferrari Challenge Stradale, in 18 months. He built Halo so collectors can see what their cars are worth, from what cars actually sold for.
Ten indexes, a 0–100 market rating and a quarterly report, all drawn from a ledger of verified auction and private sales. Estimates are tracked, but never enter an index.
One number for the whole market, scored from six signals in the ledger each month.
Mr.choppers · CC BY-SA 3.0
Lothar Spurzem · CC BY-SA 2.0 de
Thesupermat · CC BY-SA 3.0
Alexander-93 · CC BY-SA 4.0
ermell · CC BY-SA 4.0JUL–SEP 2026
Read the reportAdd a car and Halo values it as a range, from the comparable sales behind it. Every figure links to those sales.
EXAMPLE GARAGEMrWalkr · CC BY-SA 4.0Many of the most important cars never reach a public listing. Halo lets you show one to vetted buyers as an anonymous card: the car, its condition, its Halo value. Your name, chassis number and location stay with you.
The first 500 collectors whose ownership Halo verifies receive a year of Showcase Unlimited.
Every Halo index is published with its method, its constituents and the sales behind each move. Cite Halo the way you would any market benchmark.
Read our founder’s letterHalo 50 index, 128.1 (+23.8% over 12 months), as of 29 Sep 2026. Source: Halo, haloindex.io/indexes/halo-50
Anyone can use the index: sign in with your email and start valuing your cars. The private market is by invitation, and a person reads every request.