From a two-venue show of Albert Oehlen's abstract works in Paris to a Bridget Riley retrospective in Los Angeles, here are the gallery shows to see

Key Old Master European works were quick to sell while US-based dealers offer a more 'local flavour'

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

A dizzying mix of antique oddities and gems attract browsers to the city's third iteration of the fair

Our pick of three works for sale at the International Fine Print Dealers Association’s 27th edition of the fair

Two-day auction will include works by Picasso, Matisse, Egon Schiele, collected by Bernd Schultz over six decades

The divisive election of conservative president Iván Duque in August and resulting political tension may stymie sales at Bogotá's Artbo

Our picks from this week's fairs and auctions around the globe

With no auction precedent and little primary market data, Christie's sale of a work made by an algorithm tests demand

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

From fair fatigue to unearthing new talent, gallerists and collectors at the Paris event share their concerns

The 20-lot sale spans the auction house's New York and London locations and includes works ranging from Old Master paintings to a Monet

Artist pairings have grown in popularity for this year's edition of the fair at the Grand Palais

Sotheby's directors speak out for the first time since Girl With Balloon was half shredded at auction

More than 20 galleries will participate in the inaugural LES Art Week, launching 17 October

Modernist works from the Georgia O’Keeffe Museum will be offered in New York in November

Pair of portraits by Frans Hals expected to lead two-day sale of collection of Dutch entrepreneur, who was advised by the dealer Robert Noortman

Auction house sold the painting by Emma Sandys for £62,500 earlier this year, but now 19th century work is caught up in a legal battle

Andy Hei says tax advantages and broad Asian clientele help keep city's edge of Mainland China—but he is not deterred from holding Beijing fair this month

Now being sold by a London-based collector at Christie's New York, the work will probably go to Japan or China

Estimated at $300m, the sale of American Modernist masterpieces will be digitally encrypted by the blockchain startup Artory

Girl With Balloon canvas ‘self-destructed’ live at Sotheby’s last week in one of the most publicised stunts in auction history

Middle Eastern and South Asian works owned by embattled Dubai-based private equity firm carry much lower estimates than prices paid a decade ago

Today, art history is increasingly being written by dealers and auctioneers to suit their own purpose

The pioneering New York dealer says the art market is a "different world” to when she launched her gallery

Just when we thought Frieze week was all over, twists and turns provide high drama at Sotheby’s contemporary evening sale on Friday night

Shipping firms seek to replace single-use crates

We speak to the director of Paris's Applicat-Prazan gallery about dealers in denial and the pleasures of Pink Floyd

Brexit and Trump's trade war with China are affecting the mood of buyers

Girl with a Balloon (2006) had just hammered at £860,000