Question 1

How many shares of PEN does HBK INVESTMENTS L P own?

Accepted Answer

As of 2026-Q2, HBK INVESTMENTS L P holds 1.8M shares of PEN (PENUMBRA INC).

Question 2

What is HBK INVESTMENTS L P's PEN position worth?

Accepted Answer

As of 2026-Q2, HBK INVESTMENTS L P's PEN position is worth $580.5M.

Question 3

Is HBK INVESTMENTS L P buying or selling PEN?

Accepted Answer

In 2026-Q2, HBK INVESTMENTS L P increased their PEN position (+12.5% change in shares).

Question 4

When did HBK INVESTMENTS L P first buy PEN?

Accepted Answer

Based on available 13F filings, HBK INVESTMENTS L P first reported a position in PEN in 2019-Q1. They have held the position across 4 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	1.8M	+12.5%	$580.5M	5.7%	$315.75	69
2026-Q1	New	1.6M	-	$536.6M	5.4%	$340.16	97
2019-Q2	Exited	0	-100.0%	$0	0.0%	$160.00	0
2019-Q1	New	3,800	-	$559,000	0.0%	$147.01	34

PEN4 quarters

PEN
4 quarters