L3VLUP
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
26
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 1 listed it in both
Shares listed
18,956,022
combined, among listed positions
Reported value
$199m
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: 15 buyers (opened or added shares) and 14 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +640,020.

Managers listing PK 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.

26 of 26 holders

ActionFiling
AQR Capital Management LLC5,145,115$54munder 0.1%Added+322,94115 May 2026 (the filing on sec.gov)
Citadel Advisors LLC2,275,136$24munder 0.1%Added+830,13415 May 2026 (the filing on sec.gov)
Invesco Ltd2,114,341$22munder 0.1%Trimmed-146,10712 May 2026 (the filing on sec.gov)
Millennium Management LLC2,049,046$22munder 0.1%Added+872,06615 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP1,420,540$15munder 0.1%Trimmed-945,24714 May 2026 (the filing on sec.gov)
Two Sigma Investments LP1,094,649$12munder 0.1%Added+771,76015 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP752,289$7.9munder 0.1%Added+239,73715 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC710,419$7.5munder 0.1%Added+355,85015 May 2026 (the filing on sec.gov)
Marshall Wace LLP694,338$7.3munder 0.1%Trimmed-24,32415 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC369,152$3.9munder 0.1%Trimmed-397,70014 May 2026 (the filing on sec.gov)
AllianceBernstein LP364,693$3.8munder 0.1%Trimmed-451,13515 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd356,344$3.7munder 0.1%Trimmed-3,09318 May 2026 (the filing on sec.gov)
Caxton Associates LLP313,905$3.3m0.07%Trimmed-18,16414 May 2026 (the filing on sec.gov)
Jane Street Group LLC264,328$2.8munder 0.1%Trimmed-218,88512 May 2026 (the filing on sec.gov)
Man Group PLC259,779$2.7munder 0.1%Added+180,57915 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc153,967$1.6munder 0.1%Trimmed-291,45315 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.138,834$1.5munder 0.1%Trimmed-98,13315 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)122,433$1.3munder 0.1%Added+11,91415 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC103,277$1.1munder 0.1%Added+51,30915 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC55,411$583kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Verition Fund Management LLC48,848$514kunder 0.1%Trimmed-206,35215 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP45,024$474kunder 0.1%Added+27,96915 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC42,601$449kunder 0.1%Added+6,37127 Oct 2026 (the filing on sec.gov)
GAMCO Investors Inc30,000$316kunder 0.1%Added+3,00014 May 2026 (the filing on sec.gov)
Winton Group Ltd20,000$211kunder 0.1%Newnew12 May 2026 (the filing on sec.gov)
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Largest increases and reductions, by shares

Q4 2025 to Q1 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.
6 in Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

0510152017201820192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
PK by quarter
QuarterHoldersReported valueBuyersSellers
Q4 20161$4.1mn.a.n.a.
Q1 20176$281mn.a.n.a.
Q2 20176$267mn.a.n.a.
Q3 20176$384mn.a.n.a.
Q4 201710$599mn.a.n.a.
Q1 20186$1.0bnn.a.n.a.
Q2 20185$1.1bnn.a.n.a.
Q3 20185$1.1bnn.a.n.a.
Q4 201810$878mn.a.n.a.
Q1 20198$946mn.a.n.a.
Q2 201911$606mn.a.n.a.
Q3 20196$615mn.a.n.a.
Q4 20194$673mn.a.n.a.
Q1 20206$111mn.a.n.a.
Q2 20204$37mn.a.n.a.
Q3 20201$7.2mn.a.n.a.
Q1 20211$2.3mn.a.n.a.
Q2 20213$49mn.a.n.a.
Q3 20214$61mn.a.n.a.
Q4 20214$115mn.a.n.a.
Q1 20227$177mn.a.n.a.
Q2 20226$113mn.a.n.a.
Q3 20224$36mn.a.n.a.
Q4 20225$34mn.a.n.a.
Q1 20235$54mn.a.n.a.
Q2 20234$76mn.a.n.a.
Q3 20236$120mn.a.n.a.
Q4 20236$118m51
Q1 20248$200m61
Q2 20247$228m51
Q3 20246$197m15
Q4 20243$127m12
Q1 20255$156m40
Q2 20255$176m32
Q3 20255$146m24
Q4 20251$3.5m218
Q1 20261$3.3m1514
Q2 20261$5.9m1511

Compare with…

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

PK and AMZN →PK and TSLA →PK and HD →Choose a stock to compare with PK →

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