Airbnb's valuation slashed 30% by some mutual funds as the coronavirus pandemic halts travel

· Airbnb, the home-sharing start-up, was most recently valued at $31 billion in a 2017 funding round.
· It's had its valuation cut by a few of its investors recently — mutual-fund managers Principal Global Investors and Hartford Funds.
· The novel coronavirus pandemic has shut down travel, cutting into Airbnb's revenues...