WEST PHARMACEUTICAL SERVICES INC

WSTNYSE

$376.76+11.78 (+3.23%)as of Oct 5, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

WEST PHARMACEUTICAL SERVICES INC price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+40.5%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	9.45%	$2.39B	0.04%	Not reported
Vanguard Capital Management LLC	6.55%	$1.66B	0.04%	Not reported
Vanguard Portfolio Management LLC	5.70%	$1.44B	0.07%	Not reported
FMR LLC	5.08%	$1.28B	0.06%	Not reported
State Street Corp	4.76%	$1.2B	0.04%	Not reported
Artisan Partners Limited Partnership	3.43%	$866M	1.37%	Reduce 9.26%
Bank of New York Mellon Corp	2.90%	$734M	0.12%	Not reported
Generation Investment Management LLP	2.88%	$728M	7.08%	Reduce 9.61%
Geode Capital Management, LLC	2.70%	$681M	0.04%	Not reported
T. Rowe Price Investment Management, Inc.	2.56%	$648M	0.42%	Reduce 22.88%
Morgan Stanley	2.25%	$568M	0.03%	Not reported
JPMorgan Chase & Co	1.65%	$413M	0.02%	Not reported
Brown Advisory Inc	1.53%	$386M	0.60%	Not reported
Longview Partners (Guernsey) LTD	1.47%	$371M	6.03%	Reduce 21.41%
Invesco Ltd.	1.43%	$363M	0.03%	Not reported
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	1.26%	$318M	0.06%	Not reported
Norges Bank	1.23%	$310M	0.03%	Not reported
Goldman Sachs Group Inc	1.16%	$293M	0.03%	Not reported
Kayne Anderson Rudnick Investment Management LLC	1.08%	$273M	0.85%	Reduce 11.38%
Northern Trust Corp	1.01%	$255M	0.03%	Not reported
Capital Research Global Investors	0.87%	$219M	0.03%	Not reported
Van Eck Associates Corp	0.86%	$217M	0.13%	Reduce 15.25%
ProShare Advisors LLC	0.85%	$215M	0.31%	Not reported
Findlay Park Partners LLP	0.85%	$214M	2.89%	Reduce 3.26%
Charles Schwab Investment Management Inc	0.83%	$210M	0.03%	Not reported
Epoch Investment Partners, Inc.	0.80%	$202M	1.15%	Add 3.21%
APG Asset Management N.V.	0.80%	$176M	0.43%	Reduce 55.77%
Dimensional Fund Advisors LP	0.74%	$187M	0.03%	Not reported
Jacobs Levy Equity Management, Inc	0.72%	$182M	0.66%	Not reported
Sei Investments Co	0.71%	$179M	0.16%	Not reported
State Farm Mutual Automobile Insurance Co	0.70%	$178M	0.12%	Add 27.58%
Legal & General Group Plc	0.70%	$176M	0.04%	Not reported
Nuveen, LLC	0.63%	$160M	0.04%	Not reported
Gates Foundation Trust	0.63%	$160M	0.46%	Not reported
Arrowstreet Capital, Limited Partnership	0.62%	$157M	0.07%	Not reported
Royal Bank of Canada	0.62%	$156M	0.02%	Not reported
William Blair Investment Management, LLC	0.59%	$150M	0.45%	Add 950.49%
Deutsche Bank Ag\	0.58%	$147M	0.04%	Not reported
Liontrust Investment Partners LLP	0.57%	$144M	2.12%	Add 19.36%
Vanguard Fiduciary Trust Co	0.56%	$142M	0.03%	Not reported
Amundi	0.55%	$138M	0.03%	Not reported
UBS Group AG	0.53%	$134M	0.02%	Not reported
Citadel Advisors LLC	0.50%	$127M	0.01%	Not reported
Bank of America Corp	0.50%	$126M	0.01%	Not reported
Stonehage Fleming Financial Services Holdings Ltd	0.48%	$122M	4.17%	Add 33.53%
Quantinno Capital Management LP	0.44%	$111M	0.13%	Add 90.81%
Point72 Asset Management, L.P.	0.40%	$102M	0.11%	Not reported
Holocene Advisors, LP	0.39%	$98.9M	0.22%	Add 35.26%
Russell Investments Group, Ltd.	0.39%	$97.5M	0.09%	Not reported
Envestnet Asset Management Inc	0.37%	$93.2M	0.02%	Not reported

50 of 784 holders

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