Arch Capital Group Ltd.
A Bermuda-based insurer and reinsurer, Arch Capital Group backs other insurance companies and homeowners' mortgages, offering specialty insurance for businesses through its insurance, reinsurance, and mortgage segments. It grew out of Risk Capital Holdings, founded in 1995, which renamed itself Arch Capital Group in 2000 after selling off part of its reinsurance business. The name plays on the architectural arch—a structure built to bear weight and spread pressure, a fitting metaphor for a company that helps carry others' risk.
Estimated from filings — the split-adjusted price range over the quarters each manager built the position. A range, not a fill price; 13F reports a quarter-end snapshot, not a trade date.