BBNX in the 13F filings

Beta Bionics Inc · CUSIP 08659B102

Sector · Medical devices and instruments Theme · Healthcare: biopharma and medtech· L3VLUP-defined Theme · Surgical, medical and electromedical devices

Quarter

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025

Quarter end: 31 Mar 2026; the date the book describes
Filed: 15 May 2026; latest of these filings; the earliest 12 May 2026
Managers listing it: 19; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q4 2025 and Q1 2026; 3 listed it in both
Shares listed: 8,591,805; combined, among listed positions
Reported value: $87m; combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 5 buyers (opened or added shares) and 21 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -1,418,982.

Managers listing BBNX in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

19 of 19 holders

				Action		Filing
Farallon Capital Management LLC	3,607,920	$36m	0.19%	Trimmed	-706,000	15 May 2026 (the filing on sec.gov)
Point72 Asset Management LP	2,525,040	$25m	under 0.1%	Added	+1,537,689	15 May 2026 (the filing on sec.gov)
Millennium Management LLC	860,866	$8.6m	under 0.1%	Trimmed	-84,595	15 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC	617,915	$6.2m	under 0.1%	Added	+532,942	15 May 2026 (the filing on sec.gov)
First Eagle Investment Management LLC	242,000	$2.4m	under 0.1%	Trimmed	-11,702	14 May 2026 (the filing on sec.gov)
Tudor Investment Corp	218,094	$2.2m	under 0.1%	Trimmed	-41,538	15 May 2026 (the filing on sec.gov)
AllianceBernstein LP	35,400	$1.1m	under 0.1%	Held	0	15 May 2026 (the filing on sec.gov)
Marshall Wace LLP	69,470	$696k	under 0.1%	Trimmed	-158,486	15 May 2026 (the filing on sec.gov)
Two Sigma Investments LP	65,495	$656k	under 0.1%	Trimmed	-345,108	15 May 2026 (the filing on sec.gov)
AQR Capital Management LLC	60,287	$604k	under 0.1%	Added	+9,882	15 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC	59,624	$597k	under 0.1%	New	new	15 May 2026 (the filing on sec.gov)
Citadel Advisors LLC	52,142	$522k	under 0.1%	Trimmed	-268,738	15 May 2026 (the filing on sec.gov)
Quantbot Technologies LP	41,295	$414k	under 0.1%	Trimmed	-48,110	13 May 2026 (the filing on sec.gov)
Man Group PLC	39,267	$393k	under 0.1%	Added	+27,946	15 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	35,472	$356k	under 0.1%	Trimmed	-497,277	15 May 2026 (the filing on sec.gov)
Verition Fund Management LLC	25,427	$255k	under 0.1%	Trimmed	-57,435	15 May 2026 (the filing on sec.gov)
Invesco Ltd	19,464	$195k	under 0.1%	Trimmed	-97,896	12 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP	13,428	$135k	under 0.1%	Trimmed	-1,405	15 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	3,199	$32k	under 0.1%	Trimmed	-13,912	15 May 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Point72 Asset Management LPexisting position · 2,525,040 shares now+1,537,689
Balyasny Asset Management LLCexisting position · 617,915 shares now+532,942
Schonfeld Strategic Advisors LLCnew position · 59,624 shares now+59,624
Man Group PLCexisting position · 39,267 shares now+27,946
AQR Capital Management LLCexisting position · 60,287 shares now+9,882

Reductions

Farallon Capital Management LLCexisting position · 3,607,920 shares now-706,000
T. Rowe Price Associates Incexisting position · 35,472 shares now-497,277
Two Sigma Investments LPexisting position · 65,495 shares now-345,108
Citadel Advisors LLCexisting position · 52,142 shares now-268,738
Marshall Wace LLPexisting position · 69,470 shares now-158,486

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (1)

Schonfeld Strategic Advisors LLC$597k

Exited (8)

Walleye Capital LLCwas $20m
Voloridge Investment Management LLCwas $4.6m
Jane Street Group LLCwas $4.3m
Freestone Grove Partners LPwas $4.2m
Squarepoint Ops LLCwas $2.5m
Holocene Advisors LPwas $2.2m
D. E. Shaw & Co.was $400k
Brevan Howard Capital Management LPwas $293k

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

4 in Q1 2025 to 1 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

BBNX and LLY →BBNX and JNJ →BBNX and VRTX →Choose a stock to compare with BBNX →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own BBNX, latest filings →Back to the 13F Explorer →

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Quarter	Holders	Reported value	Buyers	Sellers
Q1 2025	4	$55m	4	0
Q2 2025	3	$73m	1	3
Q3 2025	3	$102m	3	1
Q4 2025	6	$168m	24	6
Q1 2026	2	$39m	5	21
Q2 2026	1	$9.3m	11	12