Question 1

Does Calamos Advisors own ON SEMICONDUCTOR stock?

Accepted Answer

Yes. As of its Q3 2026 13F, Calamos Advisors holds 25,236,000 shares of ON SEMICONDUCTOR, worth $37.4M.

Question 2

How many shares of ON SEMICONDUCTOR does Calamos Advisors own?

Accepted Answer

As of its Q3 2026 13F, Calamos Advisors holds 25,236,000 shares of ON SEMICONDUCTOR.

Question 3

What is Calamos Advisors' ON SEMICONDUCTOR position worth?

Accepted Answer

As of its Q3 2026 13F, Calamos Advisors' ON SEMICONDUCTOR position is worth $37.4M.

Question 4

Is Calamos Advisors buying or selling ON SEMICONDUCTOR?

Accepted Answer

In Q3 2026, Calamos Advisors increased its ON SEMICONDUCTOR position by 89,000 shares (+0.4%).

Question 5

When did Calamos Advisors first buy ON SEMICONDUCTOR?

Accepted Answer

Calamos Advisors already held ON SEMICONDUCTOR in its Q2 2022 13F, the earliest on record, and has listed it in 18 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q3 Latest	Increased	25.2M	+0.3%	$37.4M	0.1%	—	35
2026-Q2	Decreased	25.1M	-41.2%	$45.4M	0.2%	—	0
2026-Q1	Increased	42.8M	+53.5%	$55.2M	0.2%	—	49
2025-Q4	Increased	27.9M	+0.1%	$33.3M	0.1%	—	34
2025-Q3	Decreased	27.8M	-0.2%	$31.7M	0.1%	—	0
2025-Q2	Decreased	27.9M	-26.4%	$33.1M	0.1%	—	0
2025-Q1	Increased	37.9M	+3.6%	$40M	0.2%	—	36
2024-Q4	Decreased	36.6M	-49.0%	$47.9M	0.2%	—	0
2024-Q3	Decreased	71.8M	-0.1%	$105.4M	0.5%	—	0

ONON SEMICONDUCTOR CORP