Question 1

How many shares of ANRO does GROUP ONE TRADING LLC own?

Accepted Answer

GROUP ONE TRADING LLC previously held 0 shares of ANRO (ALTO NEUROSCIENCE INC) before exiting the position in 2026-Q2.

Question 2

What is GROUP ONE TRADING LLC's ANRO position worth?

Accepted Answer

GROUP ONE TRADING LLC's ANRO position was last reported at $0 in 2026-Q2 before the exit.

Question 3

Is GROUP ONE TRADING LLC buying or selling ANRO?

Accepted Answer

In 2026-Q2, GROUP ONE TRADING LLC exited their ANRO position entirely (-100.0% change in shares).

Question 4

When did GROUP ONE TRADING LLC first buy ANRO?

Accepted Answer

Based on available 13F filings, GROUP ONE TRADING LLC first reported a position in ANRO in 2025-Q1. They have held the position across 6 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Exited	0	-100.0%	$0	0.0%	$26.39	0
2026-Q1	Decreased	400	-71.7%	$8,992	0.0%	$20.11	0
2025-Q4	Decreased	1,413	-46.8%	$25,151	0.0%	$17.94	0
2025-Q3	Increased	2,658	+222.2%	$10,685	0.0%	$4.01	19
2025-Q2	Increased	825	+68.0%	$1,815	0.0%	$2.31	11
2025-Q1	New	491	—	$1,061	0.0%	$2.27	17