Analysts at Barclays took a fresh look at financial services giant Hargreaves Lansdown following the release of the group's full-year results last week.
The FTSE 250 was up 0. 61% at 20,173. 78 at 1536 BST.
Wall Street stocks were in the green early on Monday ahead of a key inflation report scheduled for later in the week.
Low-cost airline Ryanair said it would take the Hungarian government to court after it was fined for passing an "unjustified" windfall tax onto customers.
BioNTech reported a larger-than-expected drop in quarterly revenues, even as it progressed on the roll-out of new Covid-19 vaccines and its pipeline of potential cancer treatments.
London’s FTSE 100 was up 0. 9% at 7,505. 02 in afternoon trade on Monday.
JPMorgan Cazenove said on Monday that the risk/reward for equities is "not all bad" as we head into year-end.
Shares of Palantir reeled after the data analytics outfit guided lower for full-year sales and profits.
Online estate agency Purplebricks saw its shares surge on Monday, as it disclosed three share purchases worth almost £0. 1m made by its chief executive officer.
Renewable electricity supplier Good Energy announced on Monday that electric vehicle charging point mapping service Zap-Map has completed a £9m series-A fundraising, valuing Zap-Map at a £26. 3m post-money equity value.
WH Smith's pension fund on Monday said it had insured the benefits of all its pension members in a deal with Standard Life.
Analysts at Canaccord Genuity slightly raised their target price on exploration and production firm Touchstone Exploration from 190. 0p to 200. 0p on Monday after the group secured environmental approvals for its Cascadura development.
Computing, power and communications value-added component supplier Solid State has completed the acquisition of Custom Power, it announced on Monday.
Azerbaijan-focussed gold, copper and silver producer Anglo Asian Mining has made a further investment in Libero Copper & Gold Corporation, it announced on Monday.
Tertiary Minerals has accepted a binding offer from Aurion Resources for the purchase of its royalty interests in the Kaaresselkä and Kiekerömaa gold projects in Finland, it announced on Monday.
Egdon Resources and Union Jack Oil both told shareholders on Monday that an appeal against a refusal by the Lincolnshire County Council had been submitted.
Pfizer has agreed to buy biopharmaceutical group Global Blood Therapeutics for $5. 4bn in cash.
Medical cannabis, health and wellness-focussed investor Seed Innovations has invested a further £50,000 in London-based wellness and beauty brand owner South West Brands (SWB), it announced on Monday.
Brazil-focussed miner and developer Serabi Gold announced the appointment of Michael Lynch-Bell as a non-executive director and its new chairman on Monday, with immediate effect.
Non-life specialty insurance company R&Q reported gross written premiums of $807m in a first-half update on Monday, up 82% year-on-year.