ARM price seems to be going through a three month flattish period after a 1 year or so steady rise. Any views on what might happen next?

my sipp is very happy :-)

Another British Company about to disappear.

I think the offer is subject to UK regulator approval, so not yet a done deal.
Softbank also own Sprint in the US, so possible conflict of interest?

Isn't it a great shame that those with money to invest only do so "Short-term" -or- speculatively as in Equities...?
Wouldn't it be nice to feel the Country backed good businesses . . . and that in time we ( our Pensions) would benefit from this progress?
-Not a bit of it _
We've sold off LSE ( Yikes!) and are about to sell ARM . . . despite previous models showing that foreign Buyers don't always keep their promises . . . . Cadbury

We should have a Minister for "Keeping what's Good" - and allow the Public ( Like Crowd-funding) to invest in these UK-enterprises. - shares appears to be the prime route, but over time that has been destroyed by Institutions that (Must-)have only their short-term interests at heart.

A new way of investing MUST remove the City and its greed, so there is a direct link between the Public and their money . . . . new ideas needed...

UK has sold too much and left nothing but the housing market. Next sector to be targeted.

Conversely foreign investment has kept some of our industries alive, which would have gone to the wall otherwise.......car.......aviation......nuclear power.......steel (open to debate).......all matters relating to sport and sport industry (also open to debate!)......I'm sure there are many others. And you could argue that UK incorporated has a good many fingers in pies overseas.......I think it's called globalisation....for better or worse!

Well, HARRYCAT, it's Yes - and - No from me. . . . We, that's "UK-Them" allowed our business to fail . . . motorcycles that were only for Real Men, as m/c's spent most of the time in bits.... whereas the Competition just worked - and offered Electric Start . . . which appealed to the non-Treehuggers ( and women?).
Cars - that were targeted by lazy workers and Unions that perpetuated practices that were hugely dragging the profitability. Add-in the Press having the idea that every New Model is an opportunity for jokey headlines ( -And this applied to All industries, bless 'em.).....not helped by those in charge having little understanding of Engineering (( Still the case in Parliament - where a basic O-level/GCSE should be the minimum in Maths, Biology, Physics and Mechanics, IMHO.)).
Nuclear was destroyed by the Lobbyists believing that Nuclear meant making Bombs - not helped by some "Told you so..." plant explosions in Japan, USA and Russia.
So now we are "forced" to buy Nuclear Plants from CHINA . . . and France . . . .Just as we buy Pedelino Trains from Italy ( Our invention that Gov. was unable to see was indeed the future to upgrade existing track in the short-term ).
Steel has suffered from World prices -

The problem for non-Nationalised business is the Shares are Openly traded for the benefit of the short-term . . . . not as a LT business that will continue to provide profits for many years to come - together with UK-employment.
e.g Look at the Solar-Power industry ( madness IMHO, until Conversion is ~3x present levels ) . . . yet we are being encouraged to buy . . . providing jobs for Foreign manufacturers ( of the wafers ) . . . .

Look to the areas in the UK where "old industries" have been lost - and tell me what ANY Government has done to provide employment on the scale to recover Regional economies. So-called investment schemes are too-soon withdrawn - as there is no strategic plan, based on a LT need.... for the products.

Did I hear we ( after BrExit ), are going to invest in xxxxx and yyyyy - Or was that a Re-run of well-worn Political posturing. . . ? ( Yes it was! ).