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BBLG · Bone Biologics Corp · Holdings

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$0.49 +0.01 (+2.06%) At close · Oct 5
Rebalance outlook locked
Going-concern doubt — flagged Aug 14, 2026

Substantial doubt about the company's ability to continue as a going concern.

“These factors raise substantial doubt about the Company's ability to continue as a going concern within one year after the date that the financial statements are issued.”
View the 10-Q filed Aug 14, 2026
Market Cap
$1.37M
Shares
2.76M
Volume · Oct 5 26.26K Avg daily vol (3M) 379.16K

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 →
Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
Holders: 4
Total Value: $35,704
Total Shares: 52,973

Institutional Ownership Trend

19 quarters

Holder Concentration

Across 4 13F filers · Δ vs Mar 31, 2026
Top Holder
91.6%
Sep 2023 → Jun 2026 · range 36.3% – 99.7%
−6.2 pts
Top 5
100.0%
Sep 2023 → Jun 2026 · range 97.9% – 100.0%
0.0 pts
Top 10
100.0%
Sep 2023 → Jun 2026 · range 100.0% – 100.0%
0.0 pts
HHI
8,452
Sep 2023 → Jun 2026 · range 2,659 – 9,939
Highly concentrated−1,125

Quarterly Activity

vs Mar 31, 2026
New
0
Increased
2
Decreased
1
Sold Out
0
Unchanged
1
Holder count: 0
Institutional value: -94.4%
Shares held: +53.2%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open
CITADEL ADVISORS LLC +20,525 50,277
UBS Group AG +35 513

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open
Tower Research Capital LLC (TRC) −2,173 1,953
Filter: New 0 Increased 2 Reduced 1 Sold out 0 Unchanged 1
Showing 5 of 5
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
CITADEL ADVISORS LLC $32,714 91.63% 23,879
Tower Research Capital LLC (TRC) $2,675 7.49% 1,953
SBI Securities Co., Ltd. $315 0.88% 230
CITADEL ADVISORS LLC BBLGW — — 26,398
UBS Group AG BBLGW — — 513
Key facts CIK 1419554 CUSIP 098070600 Visit website Investor relations