Question 1

Does Jane Street Group own CTSO stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Jane Street Group holds 52,205 shares of CTSO (Cytosorbents), worth $19,525.

Question 2

How many shares of CTSO does Jane Street Group own?

Accepted Answer

As of its Q2 2026 13F, Jane Street Group holds 52,205 shares of CTSO (Cytosorbents).

Question 3

What is Jane Street Group's CTSO position worth?

Accepted Answer

As of its Q2 2026 13F, Jane Street Group's CTSO position is worth $19,525.

Question 4

Is Jane Street Group buying or selling CTSO?

Accepted Answer

In Q2 2026, Jane Street Group opened a new CTSO position of 52,205 shares.

Question 5

When did Jane Street Group first buy CTSO?

Accepted Answer

Jane Street Group first reported CTSO in its Q3 2020 13F and has listed it in 8 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	New	52,205	—	$19,525	0.0%	$7.48	29
2025-Q1	Exited	0	-100.0%	$0	0.0%	$20.00	0
2024-Q4	New	10,147	—	$9,234	0.0%	$18.20	26
2024-Q3	Exited	0	-100.0%	$0	0.0%	$1.50	0