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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
31 Mar 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2025
Managers listing it
12
at least, of 95 tracked, among listed positions
Comparable managers
95
filed both Q4 2024 and Q1 2025; 9 listed it in both
Shares listed
6,046,147
combined, among listed positions
Reported value
$1.4bn
combined, at the quarter end

Among the 95 comparable managers: 9 buyers (opened or added shares) and 4 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.

Managers listing WST in Q1 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2024, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

12 of 12 holders

ActionFiling
Artisan Partners LP2,195,483$492m0.79%Trimmed-915,42014 May 2025 (the filing on sec.gov)
Durable Capital Partners LP1,573,119$352m3.15%Added+935,72115 May 2025 (the filing on sec.gov)
Two Sigma Investments LP522,827$117m0.25%Added+446,83915 May 2025 (the filing on sec.gov)
Neuberger Berman Group LLC433,436$97m0.08%Added+52,37027 Oct 2026 (the filing on sec.gov)
Capital Research Global Investors390,678$87munder 0.1%Added+167,46812 May 2025 (the filing on sec.gov)
Two Sigma Advisers LP243,900$55m0.12%Addedn.a.15 May 2025 (the filing on sec.gov)
Marshall Wace LLP166,099$37munder 0.1%Trimmed-61,16615 May 2025 (the filing on sec.gov)
Freestone Grove Partners LP142,976$32m0.33%Newnew15 May 2025 (the filing on sec.gov)
Woodline Partners LP138,871$31m0.20%Added+119,41715 May 2025 (the filing on sec.gov)
Point72 Asset Management LP128,287$29m0.07%Trimmed-74,18521 Jul 2025 (the filing on sec.gov)
Voloridge Investment Management LLC105,137$24m0.09%Newnew15 May 2025 (the filing on sec.gov)
Winton Group Ltd5,334$1.2m0.07%Added+1,77215 May 2025 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2024 to Q1 2025, 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 (2)

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 →