Health Vanguard Group & Avadel Pharmaceuticals Investment by Dr Natalie Singh - Health Editor February 6, 2026 by Dr Natalie Singh - Health Editor February 6, 2026 Vanguard Group Discloses Stake in Avadel Pharmaceuticals The Vanguard Group, Inc. has recently disclosed a 5.95% ownership stake in Avadel Pharmaceuticals plc, according to a filing made under Rule 8.3 … 0 FacebookTwitterPinterestEmail