Connect Biopharma Holdings Limited
Connect Biopharma Holdings Limited (CNTB) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · CNTB · as of Sep 30, 2025
Ownership Breakdown
16
Institutional Holders
▼ 1 vs Q2
$2.45M
Total Inst. Value
▲ $46,727 vs Q2
62.96M
Shares Outstanding
freeFloat 24.80%
1.62M
13F Shares Held
▼ 822,105 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
CNTB largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BML CAPITAL MANAGEMENT, LLC pharmaceutical preparations | 1.27M | 2.28% | 2.28% | $1.91B | Nov 10, 2025 | NEW |
RENAISSANCE TECHNOLOGIES LLC pharmaceutical preparations | 158.2K | 28.51% | 28.51% | $238.88M | Nov 13, 2025 | NEW |
MARSHALL WACE, LLP pharmaceutical preparations | 58.0K | 10.46% | 10.46% | $85.89M | Nov 13, 2025 | NEW |
KOA WEALTH MANAGEMENT, LLC pharmaceutical preparations | 49.6K | 8.94% | 8.94% | $74.90M | Oct 28, 2025 | NEW |
XTX TOPCO LTD pharmaceutical preparations | 23.7K | 4.27% | 4.27% | $35.11M | Nov 14, 2025 | NEW |
GEODE CAPITAL MANAGEMENT, LLC pharmaceutical preparations | 23.3K | 4.20% | 4.20% | $34.51M | Nov 12, 2025 | NEW |
SUSQUEHANNA INTERNATIONAL GROUP, LLP pharmaceutical preparations | 13.7K | 2.48% | 2.48% | $20.35M | Nov 14, 2025 | NEW |
MONOGRAPH WEALTH ADVISORS, LLC pharmaceutical preparations | 11.1K | 2.01% | 2.01% | $16.81M | Nov 14, 2025 | NEW |
HRT FINANCIAL LP pharmaceutical preparations | 10.5K | 1.88% | 1.88% | $15.00M | Nov 14, 2025 | NEW |
CITIGROUP INC pharmaceutical preparations | 4.2K | 0.76% | 0.76% | $6.24M | Nov 10, 2025 | NEW |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
0
Increased
+0 shares15
New Positions
first time holders0
Decreased
−0 shares16
Sold Out
fully exitedNet shares change (top 50)
+0
+0 / −0
Net new holders
-1
15 new / 16 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
CNTB insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
3
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Huang James director | May 29, 2026 | Purchase | 150,000 | $2.48 | $371.6K | 13.31M | Form 4 ↗ |
Xanthopoulos Kleanthis Gabriel director | Mar 31, 2026 | Award | 2,816 | — | — | 82.8K | Form 4 ↗ |
LIU JEAN I director | Mar 31, 2026 | Award | 5,061 | — | — | 5.1K | Form 4 ↗ |
Huang James director | Mar 31, 2026 | Purchase | 1,160,000 | $3.45 | $4.00M | 13.16M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Connect Biopharma Holdings Limited (CNTB) is primarily owned by institutional investors, who hold approximately 2.6% of total shares outstanding. Company insiders own approximately 75.20%, while retail and public investors account for the remaining 22.22%.
The largest institutional shareholder of Connect Biopharma Holdings Limited is BML CAPITAL MANAGEMENT, LLC, holding approximately 1.27 million shares — equal to 2.28% of outstanding shares — as of September 30, 2025.
A total of 16 institutional investors currently hold CNTB stock, with a combined institutional value of approximately $2,445,792 as of the most recent 13F filing period.
Frequently asked questions
CNTB ownershipConnect Biopharma Holdings Limited (CNTB) is primarily owned by institutional investors, who hold approximately 2.6% of shares. The largest shareholder is BML CAPITAL MANAGEMENT, LLC with a 2.28% stake. Company insiders hold 75.20%. Data sourced from SEC Form 13F as of September 30, 2025.