LONDON, May 29 (Reuters) - Northwest European gasoline refinery margins rose by about 44 cents a barrel to $24.22 a barrel on Friday, boosted by lower underlying crude prices and favourable export economics to the United States.

• About 18,000 metric tons of E5 gasoline barges traded in the Argus window as BP and Trafigura sold to TotalEnergies.

• No barges of E10 gasoline traded on Friday.

• Total oil product stocks held independently in the Amsterdam-Rotterdam-Antwerp refining and storage hub fell around 1% on the week to their lowest since November 2014, data from Dutch consultancy Insights Global showed on Thursday. ARA/

• Gasoline stocks rose 7.5% to 1.11 million metric tons as blending activity in the region picked up, Insights Global's Lars van Wageningen said.

• U.S. gasoline stocks USOILG=ECI fell by 2.6 million barrels last week to 211.6 million barrels, the Energy Information Administration said, compared with analysts' expectation in a Reuters poll for a 2.41 million-barrel draw.

• Sparta Commodities said it remains bullish on physical transatlantic arbitrage for ARA players, as expected U.S. inventory draws and biofuel-driven gains in paper spreads should continue to lift arbitrage values despite higher blending costs.​

• Meanwhile, EU-27 and UK gasoline and blending component exports have averaged 807,000 barrels per day so far this month, compared with an average of 955,000 bpd in April, Kpler data showed.