We talk to David Hockney about Portrait of an Artist (Pool with Two Figures), which broke an auction record this week, selling at Christie's New York for $90.3m with fees. Produced in association with Bonhams, auctioneers since 1793.

Broadening the sales strategy for Latin American art has been a positive move for some artists' markets

Lesser known lots still hold plenty of hammer potential

Our picks from fairs and auctions around the globe this coming fortnight

A new portrait produced by an algorithm, expected to sell for around $10,000 at Christie’s this month, prompts new debates over authorship

Christie’s introduces day sale format and established names give way to new talent

New record for Joan Mitchell as fresh artists join the $10m-and-up club—but Bacon and Basquiat still dominate top prices in New York

The heads of Christie's, Bonhams and Phillips speak on market shifts, challenges and why they believe their model will succeed

Critic and curators gather to pay tribute to late artist as 1984 painting comes to market for first time

A record sale at Christie’s and a solid result at Sotheby’s show the market is in full recovery

Our pick of this month’s most interesting auction

Flaky winning bids are knocking the gloss off record-breaking sales

Citing record prices for works by Herrera, Schendel, and Oiticica, the auctioneer hopes move will stoke international demand

Capping an epic week of auctions, solid results featuring records for female artists and a Ferrari bode well for market's future—so long as it doesn't overheat

Discretionary sellers gain confidence in the market and Christie's leads its contemporary sale with Da Vinci—but recent overreaches sound a cautionary note

Buyers using works as collateral and allegedly defaulting on payment becoming increasingly common in "frothy market"