FBLG · FibroBiologics, Inc. · Holdings

$0.99 +0.07 (+7.95%)

Market Cap

$6.12M

6.66M

Volume · Oct 21 127.5K Avg daily vol (3M) 209.7K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of FBLG: 13F, 13D and 13G, insiders and funds →

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 16

Total Value: $305,086

Total Shares: 311,768

Institutional Ownership Trend

11 quarters

Holder Concentration

Across 16 13F filers

Top Holder

38.2%

of institutional value

Top 5

85.3%

of institutional value

Top 10

99.0%

of institutional value

HHI

2,126

Moderately concentrated

Who Holds FBLG

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 16 filers, like-for-like change +29.1%; actively managed books +118.9%; index-like books -35.6%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	76.8%	5	+19.6%	0	3
Exempt adviser	8.5%	1	new	1	0
Bank	3.5%	3	+66.3%	1	1
Non-US	0.0%	1	-3.0%	0	0
Holding company	7.2%	2	-16.8%	0	0
Adviser	0.0%	0	—	0	0
Broker-dealer	0.0%	0	—	0	0
Insurer	0.0%	0	—	0	0
Benefit plan	0.0%	0	—	0	0
Unknown	3.9%	4	+63.7%	1	0

Style	Share	Filers	Change	New	Exited
Index-like	29.0%	4	-35.6%	0	0
Systematic-like	10.2%	2	+6213.3%	1	0
Concentrated	56.4%	3	+135.4%	0	0
Diversified active	4.4%	7	-46.9%	2	4
Not measured	0.0%	0	—	0	0
Unknown	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	74.8%	8	+72.4%	1	2
Medium turnover	3.0%	4	-61.1%	1	1
High turnover	10.2%	2	+6213.3%	1	0
Unknown	12.0%	2	-54.2%	0	1
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	12.0%	2	-54.2%	0	1
Medium horizon	44.6%	2	+209.4%	0	0
Long horizon	34.9%	11	-5.3%	2	3
Unknown	8.5%	1	new	1	0
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	38.3%	3	+557.3%	1	0
$1B to $10B	19.8%	2	+8.2%	0	0
$10B to $100B	9.4%	3	+57.2%	1	2
$100B or more	32.5%	8	-31.3%	1	2
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	38.3%	2	+524.9%	0	1
Registered funds and BDCs	20.4%	2	-40.3%	0	0
Charitable organizations	18.2%	1	0.0%	0	0
Pooled investment vehicles	0.0%	0	-100.0%	0	2
Pension and profit sharing plans	0.0%	0	—	0	0
Insurance companies	0.0%	0	—	0	0
Governments and sovereign funds	0.0%	0	—	0	0
Diversified	0.0%	0	—	0	0
Unknown	23.2%	11	+75.6%	3	1

Private funds	Share	Filers	Change	New	Exited
Hedge funds	8.5%	1	+52.0%	1	1
Mixed private funds	0.1%	1	0.0%	0	0
No private funds	76.8%	4	+31.0%	0	2
Other private funds	0.0%	0	—	0	0
Real estate funds	0.0%	0	—	0	0
Private equity funds	0.0%	0	—	0	0
Private funds, type not stated	0.0%	0	—	0	0
Securitized asset funds	0.0%	0	—	0	0
Unknown	14.7%	10	+11.0%	2	1

Location	Share	Filers	Change	New	Exited
United States	88.0%	12	+16.8%	1	4
Outside the US	12.0%	4	+478.1%	2	0

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

16 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

0.000% of filers hold it in their top 10

Mar 31, 2026: 0

Holders above 5%

median weight 0.000%

Mar 31, 2026: 0

Crowding

0.864%

of shares outstanding, 4th percentile

Mar 31, 2026: 0.492%

Private-fund advisers

0.724%

of shares outstanding

Institutional ownership

8.43%

9.29% of the estimated free float

Top 10 holders

99.0%

of 13F shares, Herfindahl 0.213

Active holders

+118.9%

like-for-like share change of active filers

5% stakes on record

0 13D, 3 13G (1 institutional, 1 passive, 1 exempt)

How long holders have held it value-weighted 6.0 quarters

Under 1 year 41.3% 1 to 3 years 58.7% 3 years or more 0.000% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost

$3.92

estimated per share

Mar 31, 2026: $81.63

Quarter-end price

$0.95

implied by 13F values

Estimated gain or loss

-75.8%

price against the estimated cost

Estimated at a loss

100.0%

of costed 13F value

Estimated cost covers 14.1% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies FBLG's active holders also own, quarter ended Dec 31, 2025

#	Company	Shared holders	Similarity
1	KMI Kinder Morgan, Inc.	3	0.046
2	SO Southern Co	4	0.046
3	CAT Caterpillar Inc	6	0.045
4	MCD Mcdonalds Corp	6	0.045
5	UNH Unitedhealth Group Inc	5	0.040
6	HD Home Depot, Inc.	6	0.040
7	LMT Lockheed Martin Corp	4	0.038
8	T At&T Inc.	4	0.038
9	MRK Merck & Co., Inc.	5	0.036
10	ORCL Oracle Corp	5	0.036

Shareholder Targets

13F filers that own its peers but not FBLG, quarter ended Dec 31, 2025

Found through its holder-overlap peers: KMI, SO, CAT, MCD, UNH, HD, LMT, T, MRK, ORCL, JPM, VZ, COST, GS, MO, TSLA, NVDA, AMZN, ABT, AAPL. 7,083 filers in all.

#	Filer	In peers	Of book	Largest peers
1	FMR LLC Holding company, Diversified active	$408,698,811,886 20 held	21.4%	NVDA, AAPL, AMZN
2	MORGAN STANLEY Holding company, Index-like	$260,066,093,425 20 held	17.6%	AAPL, NVDA, AMZN
3	JPMORGAN CHASE & CO Bank, Diversified active	$257,757,141,015 20 held	18.5%	NVDA, AAPL, AMZN
4	NORGES BANK Non-US, Index-like	$213,787,674,128 17 held	22.9%	NVDA, AAPL, AMZN
5	PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active	$207,962,596,824 20 held	22.8%	NVDA, AAPL, AMZN
6	Invesco Ltd. Adviser, Diversified active	$137,552,098,383 20 held	17.1%	NVDA, AAPL, AMZN
7	CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser, Diversified active	$126,255,828,811 20 held	19.9%	NVDA, AAPL, AMZN
8	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser, Index-like	$118,854,941,377 20 held	25.2%	NVDA, AAPL, AMZN
9	Bank of New York Mellon Corp Bank, Index-like	$112,656,576,700 20 held	21.1%	NVDA, AAPL, AMZN
10	Legal & General Group Plc Unknown, Index-like	$111,511,441,713 20 held	24.8%	NVDA, AAPL, AMZN

Fund Ownership of FBLG by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 0.80% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.38%	+0.38 pp	25,480	4
Index ETFs	0.42%	-0.69 pp	27,769	1
Active ETFs	0.00%	0.00 pp	0	0
Active funds	0.00%	0.00 pp	0	0
Unclassified	0.00%	0.00 pp	0	0
All registered funds	0.80%	-0.31 pp	53,249	5

How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 5 Exempt adviser 1 Bank 3 Non-US 1 Holding company 2 Unknown 4

Showing 16 of 16

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Cascade Financial Partners, LLC

$103,168

33.82%

108,828

Fund Evaluation Group, LLC

$49,100

16.09%

51,794

IFP Advisors, Inc

$35,100

11.50%

27,000

GEODE CAPITAL MANAGEMENT, LLC

$28,722

9.41%

30,299

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	1,062	$1,006	3.5%	Defined
Held directly	29,237	$27,716	96.5%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$26,325

8.63%

27,769

Qube Research & Technologies Ltd

$23,048

7.55%

24,313

BlackRock, Inc.

$17,289

5.67%

18,238

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Institutional Trust Company, N.A.	18,238	$17,289	100.0%	Sole

BARCLAYS PLC

$6,866

2.25%

7,243

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	7,243	$6,866	100.0%	Defined

VANGUARD FIDUCIARY TRUST CO

$6,048

1.98%

6,380

Tower Research Capital LLC (TRC)

$4,482

1.47%

4,728

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	4,728	$4,482	100.0%	Defined

OSAIC HOLDINGS, INC.

$2,278

0.75%

2,404

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	2,404	$2,278	100.0%	Defined

ROYAL BANK OF CANADA

$1,442

0.47%

1,522

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Capital Markets, LLC	1,522	$1,442	100.0%	Defined

UBS Group AG

$1,016

0.33%

1,073

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	1,072	$1,016	100.0%	Defined
UBS AG	1	$0	0.0%	Defined

Grove Bank & Trust

$130

0.04%

100

BNP PARIBAS ARBITRAGE, SA

$60

0.02%

Allworth Financial LP

$12

0.00%

Key facts CIK 1958777 CUSIP 31573L204 13F (30d) 2 filings 2 filers Visit website Investor relations