13F

Stock

FibroBiologics, Inc.

FBLG · held by 17 managers

Reported value

$290.2K

Holders

17

+14 new · −0 exited

Holders’ est. mark

$102.2K

Price effect on 12 books still in the name

Largest holder

$89.3K

VANGUARD CAPITAL MANAGEMENT LLC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
VANGUARD CAPITAL MANAGEMENT LLC67.7K$89.3KHeld
Fund Evaluation Group, LLC51.8K$68.4KNew
GEODE CAPITAL MANAGEMENT, LLC29.6K$39.1K$32.4KCut−$39.4K
BlackRock, Inc.24.6K$32.5K$27KCut−$76K
Cascade Financial Partners, LLC16.4K$21.7K$18KCut−$49.1K
Renaissance Technologies16K$21.1K$17.5KCut−$31K
VANGUARD FIDUCIARY TRUST CO6.38K$8.42KHeld
UBS Group AG5.72K$7.55K$6.26KCut−$19.6K
Vanguard Global Advisers, LLC536$708Held
Tower Research Capital LLC (TRC)460$607$504Cut−$3.47K
Western Wealth Management, LLC200$264New
ISLAY CAPITAL MANAGEMENT, LLC169$223$185Cut−$540
OSAIC HOLDINGS, INC.154$203$169Cut−$1.12K
BNP PARIBAS FINANCIAL MARKETS66$87$72Cut−$207
Allworth Financial LP13$18$15Cut−$41
WELLS FARGO & COMPANY/MN10$13$11Cut−$32
ROYAL BANK OF CANADA186$0$0Held

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.