Question 1

How many shares of COR does Boston Partners own?

Accepted Answer

As of 2026-Q2, Boston Partners holds 4.9M shares of COR (AMERISOURCEBERGEN CORP).

Question 2

What is Boston Partners's COR position worth?

Accepted Answer

As of 2026-Q2, Boston Partners's COR position is worth $1.4B.

Question 3

Is Boston Partners buying or selling COR?

Accepted Answer

In 2026-Q2, Boston Partners increased their COR position (+8.6% change in shares).

Question 4

When did Boston Partners first buy COR?

Accepted Answer

Based on available 13F filings, Boston Partners first reported a position in COR in 2024-Q3. They have held the position across 31 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	4.9M	+8.6%	$1.4B	1.2%	$282.43	55
2026-Q1	Increased	4.5M	+6.8%	$1.4B	1.5%	$312.81	54
2025-Q4	Decreased	4.2M	-6.9%	$1.4B	1.5%	$335.75	0
2025-Q3	Increased	4.5M	+2.0%	$1.4B	1.4%	$310.17	51
2025-Q2	Decreased	4.4M	-18.3%	$1.3B	1.5%	$297.03	0
2025-Q1	Increased	5.4M	+8.1%	$1.5B	1.8%	$274.94	54
2024-Q4	Increased	5M	+2.6%	$1.1B	1.4%	$221.64	52
2024-Q3	Decreased	4.9M	-2.8%	$1.1B	1.3%	$221.53	0

CORShowing 8 of 31 quarters

COR
Showing 8 of 31 quarters