Ticker · CUSIP 08659B102

BBNX

BETA BIONICS INC

Healthcare·Medical Devices

···Share

Holders (tracked)

Combined shares

4,123,525

Combined value

$125.64M

Last close

$12.98

Quarter

2025Q4

Price is -57.4% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$12.98+1.84 (+16.52%)H $31.99 · L $8.86 · Avg Vol 859K

Position opened

Tracked holders · last 8 quarters

+4 vs previous quarter over the last 4.

SEC event timeline

19 events

Ken Griffin (Citadel Advisors) opened position2026-02-17
+320,880 shares · 2025Q4
Position
D.E. Shaw & Co. opened position2026-02-17
+13,142 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+259,632 shares · 2025Q4
Position
Two Sigma Investments added2026-02-17
+246,839 shares · 2025Q4
Position
AQR Capital Management trimmed2026-02-17
−1,605 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+148,497 shares · 2025Q4
Position
Steve Cohen (Point72) opened position2026-02-17
+987,351 shares · 2025Q4
Position
Wellington Management exited2026-02-17
−3,901,599 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+45,091 shares · 2025Q4
Position
Renaissance Technologies exited2026-02-12
−22,500 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+339,300 shares · 2025Q4
Position
First Eagle Investment Management added2026-02-04
+20,500 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2025-11-14
+254,766 shares · 2025Q3
Position
Two Sigma Investments added2025-11-14
+142,468 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+169,715 shares · 2025Q3
Position
George Soros (Soros Fund Mgmt) exited2025-11-14
−25,000 shares · 2025Q3
Position
AQR Capital Management trimmed2025-11-14
−3,423 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+6,000 shares · 2025Q3
Position
First Eagle Investment Management opened position2025-11-12
+233,202 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for BBNX →

Follow-the-investor returns

If you'd copied each holder of BBNX…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
AQR Capital Management	2025Q2	$14.56	-10.9%	$654K
T. Rowe Price	2025Q1	$16.22	-20.0%	$6.9M
Izzy Englander (Millennium Mgmt)	2025Q2	$18.49	-29.8%	$12.3M
First Eagle Investment Management	2025Q3	$20.73	-37.4%	$3.3M
Steve Cohen (Point72)	2025Q1	$23.74	-45.3%	$12.8M
Two Sigma Investments	2025Q1	$25.85	-49.8%	$5.3M
Ken Griffin (Citadel Advisors)	2025Q1	$29.88	-56.6%	$4.2M
Ken Griffin (Citadel Advisors)	2025Q1	$29.88	-56.6%	$4.2M
Paul Tudor Jones (Tudor Investment)	2025Q4	$30.47	-57.4%	$3.4M
Norges Bank (Norway SWF)	2025Q4	$30.47	-57.4%	$4.4M
D.E. Shaw & Co.	2025Q4	$30.47	-57.4%	$171K

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions5

Steve Cohen (Point72)
+987,351
$30.1M
Norges Bank (Norway SWF)
+339,300
$10.3M
Ken Griffin (Citadel Advisors)
+320,880
$9.8M
Paul Tudor Jones (Tudor Investment)
+259,632
$7.9M
D.E. Shaw & Co.
+13,142
$400K

Added to4

Two Sigma Investments
+246,839
$7.5M
Izzy Englander (Millennium Mgmt)
+148,497
$4.5M
First Eagle Investment Management
+20,500
$625K
T. Rowe Price
+45,091
$1K

Trimmed1

AQR Capital Management
−1,605
$49K

Exited2

Wellington Management
−3,901,599
$77.5M
Renaissance Technologies
−22,500
$447K

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2025Q1	6	5,895,201	$71.7M	—
2025Q2	8	5,419,932	$78.8M	+2
2025Q3	7	5,657,697	$112.4M	-1
2025Q4	11	4,123,525	$125.6M	+4

Who owns BBNX

11 super-investors · 2025Q4

Tracked stake

4.12M

Combined value

$126M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New6Added4Trim1

#	Manager	Shares	Value	% of book	Last action	8Q trend
1	Steve Cohen Point72	987.4K	$30M	0.0%	New+987.4K
2	Izzy Englander Millennium Mgmt	945.5K	$29M	0.0%	Added+148.5K
3	T. Rowe Price	532.7K	$16M	0.0%	Added+45.1K
4	Two Sigma Investments	410.6K	$13M	0.0%	Added+246.8K
5	Norges Bank Norway SWF	339.3K	$10M	0.0%	New+339.3K	—
6	Ken Griffin Citadel Advisors	320.9K	$10M	0.0%	New+320.9K
7	Paul Tudor Jones Tudor Investment	259.6K	$8M	0.0%	New+259.6K	—
8	First Eagle Investment Management	253.7K	$8M	0.0%	Added+20.5K
9	AQR Capital Management	50.4K	$2M	0.0%	Trim−1.6K
10	D.E. Shaw & Co.	13.1K	$400K	0.0%	New+13.1K	—
11	Ken Griffin Citadel Advisors	10.3K	$314K	0.0%	New+320.9K

Recent moves

20 transactions

SOLDWellington Management
−3,901,599 · 2025Q4
NEWD.E. Shaw & Co.
+13,142 · 2025Q4
ADDT. Rowe Price
+45,091 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+259,632 · 2025Q4
TRIMAQR Capital Management
−1,605 · 2025Q4
NEWKen Griffin (Citadel Advisors)
+320,880 · 2025Q4
ADDTwo Sigma Investments
+246,839 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+148,497 · 2025Q4
NEWSteve Cohen (Point72)
+987,351 · 2025Q4
SOLDRenaissance Technologies
−22,500 · 2025Q4
NEWNorges Bank (Norway SWF)
+339,300 · 2025Q4
ADDFirst Eagle Investment Management
+20,500 · 2025Q4
TRIMAQR Capital Management
−3,423 · 2025Q3
ADDT. Rowe Price
+169,715 · 2025Q3
ADDIzzy Englander (Millennium Mgmt)
+254,766 · 2025Q3
SOLDGeorge Soros (Soros Fund Mgmt)
−25,000 · 2025Q3
ADDTwo Sigma Investments
+142,468 · 2025Q3
ADDRenaissance Technologies
+6,000 · 2025Q3
NEWFirst Eagle Investment Management
+233,202 · 2025Q3
NEWAQR Capital Management
+55,433 · 2025Q2

Embed this chart

Paste this iframe anywhere to embed the live BBNX chart.

<iframe src="https://openstocks.me/embed/stocks/BBNX" width="100%" height="480" frameborder="0" loading="lazy" title="BBNX chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>

Preview: https://openstocks.me/embed/stocks/BBNX

Explore related topics