Question 1

Does Jane Street Group own TUSK stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Jane Street Group holds 506,662 shares of TUSK (Mammoth Energy Services), worth $1.6M.

Question 2

How many shares of TUSK does Jane Street Group own?

Accepted Answer

As of its Q2 2026 13F, Jane Street Group holds 506,662 shares of TUSK (Mammoth Energy Services).

Question 3

What is Jane Street Group's TUSK position worth?

Accepted Answer

As of its Q2 2026 13F, Jane Street Group's TUSK position is worth $1.6M.

Question 4

Is Jane Street Group buying or selling TUSK?

Accepted Answer

In Q2 2026, Jane Street Group increased its TUSK position from 22,854 to 506,662 shares.

Question 5

When did Jane Street Group first buy TUSK?

Accepted Answer

Jane Street Group already held TUSK in its Q4 2018 13F, the earliest on record, and has listed it in 19 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	506,662	+2116.9%	$1.6M	0.0%	$3.25	41
2026-Q1	Decreased	22,854	-42.4%	$55,993	0.0%	$2.45	0
2025-Q4	Decreased	39,652	-23.5%	$73,356	0.0%	$1.85	0
2025-Q3	Increased	51,803	+200.0%	$118,629	0.0%	$2.29	24
2025-Q2	Increased	17,268	+48.3%	$48,350	0.0%	$2.80	19
2025-Q1	Decreased	11,647	-25.1%	$23,760	0.0%	$2.04	0
2024-Q4	Decreased	15,550	-16.1%	$46,650	0.0%	$3.00	0
2024-Q3	Decreased	18,544	-50.0%	$75,845	0.0%	$4.09	0