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WST in the 13F filings

West Pharmaceutical SVSC Inc · CUSIP 955306105

Sector · Medical devices and instrumentsTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Surgical, medical and electromedical devices
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 7 Aug 2026
Managers listing it
35
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 11 listed it in both
Shares listed
10,437,370
combined, among listed positions
Reported value
$3.7bn
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 20 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +893,782.

Managers listing WST 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
Fidelity (FMR LLC)3,574,816$1.3bn0.06%Added+2,325,06813 Aug 2026 (the filing on sec.gov)
Artisan Partners LP2,411,792$866m1.37%Trimmed-246,10113 Aug 2026 (the filing on sec.gov)
Invesco Ltd1,009,852$363munder 0.1%Trimmed-46,15514 Aug 2026 (the filing on sec.gov)
Capital Research Global Investors609,221$219munder 0.1%Added+5,21012 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc524,652$188munder 0.1%Trimmed-1,73114 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP438,718$158m0.07%Trimmed-71,79813 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC352,769$127munder 0.1%Added+29,1822 Sep 2026 (the filing on sec.gov)
Point72 Asset Management LP283,396$102m0.11%Added+124,04614 Aug 2026 (the filing on sec.gov)
Holocene Advisors LP275,421$99m0.22%Added+71,80014 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC217,581$78munder 0.1%Trimmed-87,55114 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP175,052$63munder 0.1%Trimmed-73,58414 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP83,578$30munder 0.1%Added+82,00513 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC57,609$20munder 0.1%Trimmed-209,33514 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP76,356$19munder 0.1%Trimmed-10,94514 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC45,766$16munder 0.1%Added+44,64514 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC40,366$14munder 0.1%Trimmed-141,48727 Oct 2026 (the filing on sec.gov)
Man Group PLC34,669$12munder 0.1%Trimmed-44,98014 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC30,900$11munder 0.1%Trimmed-178,76013 Aug 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP30,860$11m0.07%Added+4,04614 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp23,851$8.6munder 0.1%Trimmed-41,56414 Aug 2026 (the filing on sec.gov)
Verition Fund Management LLC21,511$7.7munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Millennium Management LLC21,290$7.6munder 0.1%Added+7,51514 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP18,227$6.5munder 0.1%Trimmed-207,40414 Aug 2026 (the filing on sec.gov)
Woodline Partners LP15,498$5.6munder 0.1%Added+12,69214 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.12,890$4.6munder 0.1%Trimmed-1,11114 Aug 2026 (the filing on sec.gov)
Page 1 of 2

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.

New (3)

Exited (1)

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.
14 in Q3 2024 to 12 in Q2 2026

Tracked managers listing it, at least.

01020302014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
WST by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20133$230mn.a.n.a.
Q3 20134$290mn.a.n.a.
Q4 20135$370mn.a.n.a.
Q1 20144$348mn.a.n.a.
Q2 20144$344mn.a.n.a.
Q3 20143$349mn.a.n.a.
Q4 20143$403mn.a.n.a.
Q1 20154$757mn.a.n.a.
Q2 20154$795mn.a.n.a.
Q3 20154$798mn.a.n.a.
Q4 20154$896mn.a.n.a.
Q1 20164$1.0bnn.a.n.a.
Q2 20166$1.0bnn.a.n.a.
Q3 20167$1.1bnn.a.n.a.
Q4 20167$1.4bnn.a.n.a.
Q1 20178$1.3bnn.a.n.a.
Q2 201712$1.4bnn.a.n.a.
Q3 20175$1.4bnn.a.n.a.
Q4 20178$1.6bnn.a.n.a.
Q1 20188$1.5bnn.a.n.a.
Q2 20188$1.7bnn.a.n.a.
Q3 201811$2.1bnn.a.n.a.
Q4 201810$1.7bnn.a.n.a.
Q1 201914$2.0bnn.a.n.a.
Q2 201912$2.2bnn.a.n.a.
Q3 201920$2.6bnn.a.n.a.
Q4 201912$2.4bnn.a.n.a.
Q1 202019$2.3bnn.a.n.a.
Q2 202016$3.2bnn.a.n.a.
Q3 202020$3.8bnn.a.n.a.
Q4 202018$3.9bnn.a.n.a.
Q1 202115$3.6bnn.a.n.a.
Q2 202116$4.9bnn.a.n.a.
Q3 202121$5.9bnn.a.n.a.
Q4 202118$6.8bnn.a.n.a.
Q1 202220$6.3bnn.a.n.a.
Q2 202219$4.4bnn.a.n.a.
Q3 202223$2.9bnn.a.n.a.
Q4 202220$2.2bnn.a.n.a.
Q1 202319$3.9bnn.a.n.a.
Q2 202319$4.1bnn.a.n.a.
Q3 202320$4.3bnn.a.n.a.
Q4 202316$3.5bn710
Q1 202417$4.1bn127
Q2 202414$3.2bn97
Q3 202414$2.9bn95
Q4 202417$3.0bn118
Q1 202512$1.4bn94
Q2 202513$1.3bn123
Q3 202513$2.1bn122
Q4 202516$1.6bn2514
Q1 202612$1.3bn2120
Q2 202612$3.1bn1520

Compare with…

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

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

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