L3VLUP
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
35
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 17 listed it in both
Shares listed
73,047,480
combined, among listed positions
Reported value
$5.4bn
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: 24 buyers (opened or added shares) and 15 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +7,455,155.

Managers listing BBIO in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

35 of 35 holders

ActionFiling
Janus Henderson Group Ltd14,110,278$1.1bn0.43%Added+931,26514 Aug 2026 (the filing on sec.gov)
Farallon Capital Management LLC10,743,063$800m3.69%Added+1,377,60014 Aug 2026 (the filing on sec.gov)
Viking Global Investors LP9,949,219$741m2.11%Trimmed-1,893,21514 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP5,308,924$395m0.07%Added+2,824,97114 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP4,722,185$352m0.25%Added+1,601,55414 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC3,760,028$280munder 0.1%Added+586,0882 Sep 2026 (the filing on sec.gov)
Invesco Ltd3,700,934$276munder 0.1%Trimmed-891,88014 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.3,633,007$271m0.13%Added+1,087,52114 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC2,934,193$219munder 0.1%Added+1,176,52114 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)2,061,307$154munder 0.1%Trimmed-282,44713 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc1,726,383$129munder 0.1%Trimmed-2,075,27214 Aug 2026 (the filing on sec.gov)
Point72 Asset Management LP1,525,782$114m0.13%Newnew14 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP1,453,504$108munder 0.1%Trimmed-455,40314 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC1,230,052$92m0.11%Added+879,95614 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC1,191,732$89m0.10%Added+635,40814 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC856,846$64m0.09%Added+491,07413 Aug 2026 (the filing on sec.gov)
Capital Research Global Investors700,107$52munder 0.1%Trimmed-63,59512 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP653,224$49munder 0.1%Added+254,28114 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC552,158$41munder 0.1%Added+335,84327 Oct 2026 (the filing on sec.gov)
Millennium Management LLC487,594$36munder 0.1%Trimmed-145,68914 Aug 2026 (the filing on sec.gov)
Bridgewater Associates LP448,143$33m0.14%Added+188,68414 Aug 2026 (the filing on sec.gov)
Woodline Partners LP301,312$22m0.07%Added+30014 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP275,516$21munder 0.1%Trimmed-58,86613 Aug 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP224,927$17m0.11%Newnew14 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC166,949$12munder 0.1%Added+6,83714 Aug 2026 (the filing on sec.gov)
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Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

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

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.
8 in Q3 2024 to 18 in Q2 2026

Tracked managers listing it, at least.

051015202020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
BBIO by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20192$719mn.a.n.a.
Q3 20191$572mn.a.n.a.
Q4 20192$1.0bnn.a.n.a.
Q1 20203$824mn.a.n.a.
Q2 20204$926mn.a.n.a.
Q3 20204$1.1bnn.a.n.a.
Q4 20205$2.0bnn.a.n.a.
Q1 20215$1.9bnn.a.n.a.
Q2 20215$1.8bnn.a.n.a.
Q3 20214$1.4bnn.a.n.a.
Q4 20212$452mn.a.n.a.
Q1 20222$276mn.a.n.a.
Q2 20222$246mn.a.n.a.
Q3 20223$271mn.a.n.a.
Q4 20222$204mn.a.n.a.
Q1 20234$477mn.a.n.a.
Q2 20232$463mn.a.n.a.
Q3 20239$898mn.a.n.a.
Q4 20239$1.3bn17
Q1 20247$1.1bn52
Q2 20244$826m20
Q3 20248$927m70
Q4 20247$1.2bn43
Q1 20259$1.6bn63
Q2 202515$2.3bn114
Q3 202514$2.3bn59
Q4 202518$4.3bn2212
Q1 202620$4.4bn2014
Q2 202618$4.5bn2415

Compare with…

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

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

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 BBIO, latest filings →Back to the 13F Explorer →