Iron ore miner Rio Tinto is leading the way in the FTSE 100 so far this morning. Shares in the oil giant are up 1.2% at 4,834.75.
The only other two shares up more than 1% are Antofagasta - up 1.28% at 870.80 - and EasyJet, which has bounced back 1.08% to 898.10 after yesterday's slide.
Tui is leading the losers, the travel company is down 2.81% at 720.20.
Also dropping more than 2% are Evraz - down 2.31% at 693.10 - and Carnival, which has fallen 2.12% to 3,972.
That Lufthansa profit warning has hit many of its rivals. Shares in the German airline have performed worst of all; they are down around 12%, falling 2.02 to 15.68.
On the London market EasyJet has fallen 5.32% to 879.50, while Wizz Air is down 4.36% to 3,467.
Shares in the airlines sector have been spooked by that profit warning from Frankfurt-listed Lufthansa that we reported earlier.
“The fact Lufthansa is still moaning would suggest life is getting even tougher for the airlines," warned Russ Mould, investment director at A J Bell.
“While price cuts are fantastic news for travellers, the airline can’t sustain loss-making operations forever.
“Ryanair issued a profit warning in January citing lower-than-expected air fares. EasyJet warned in April, flagging slow summer sales amid Brexit uncertainty. And Wizz Air warned at the end of May that its profits would be lower than expected this year because of a tough operating environment."
Retail giant Marks & Spencer is perilously close to being booted out of the FTSE 100 this week for the first time since the index was launched in 1984.
Its shares have tumbled by nearly a fifth over the past six months as sales and profits have come under pressure.
But it is likely to be saved from an embarrassing demotion from Britain's blue chip share index in this week's FTSE reshuffle thanks to its £601m investor cash call.
Instead budget airline Easyjet could face the chop after six years in the index, analysts reckon.
One of our readers, Andrew, has emailed in to say that he won't be flying on Boeing's 737 Max when it returns to service.
He says: "There are many all Airbus airlines, for example easyJet and Wizz Air flying from the UK, so options are available not to get on one."
He adds: "Boeing is desperate to get the Max flying soon and I certainly wouldn’t want to be the person certifying it as fixed."
What about you? Would you be happy to board a Boeing 737 Max? What would it take to persuade you to fly on one?
Email us at bizlivepage@bbc.co.uk
Thomas Cook's well-reported woes - its shares are at five year lows - and Ryanair's less-positive figures published today have hit their rivals.
Budget airline EasyJet is the biggest faller in the FTSE 100 so far today, dropping 3.28% to 99.90, closely followed by holiday firm Tui, down 2.37% to 808.60.
Ryanair shares have fallen almost 6% to 10.18 this morning.
The airline's boss says "enormous" demand has pushed prices up: "That is how the system works."
Read more
Back to Easyjet, which published results earlier.
Ed Monk, associate director at Fidelity Personal Investing's share dealing service, says the first half figures were no worse than expected but "grim nonethless".
"Even an encouraging improvement in customer numbers couldn't prevent the predicted fall in revenue per seat," he said.
The drone delays and cancellations at Gatwick in December caused £10m of costs and the company spent £1.4bn on fuel, he said.
"Brexit, of course, is holding back bookings but it's also true that weak growth on the continent is hurting demand," he added.
The FTSE 100 is off 13 points in early trading, at around 7,340.
JustEat is the biggest faller - down 7%, perhaps knocked by that announcement of Amazon's investment in Deliveroo.
The bigger riser is Easyjet, which published results earlier, up 4%.