Question 1

How many shares of MGNX does SIMPLEX TRADING, LLC own?

Accepted Answer

As of 2026-Q2, SIMPLEX TRADING, LLC holds 38,821 shares of MGNX (MACROGENICS INC).

Question 2

What is SIMPLEX TRADING, LLC's MGNX position worth?

Accepted Answer

As of 2026-Q2, SIMPLEX TRADING, LLC's MGNX position is worth $179,353.

Question 3

Is SIMPLEX TRADING, LLC buying or selling MGNX?

Accepted Answer

In 2026-Q2, SIMPLEX TRADING, LLC increased their MGNX position (+714.9% change in shares).

Question 4

When did SIMPLEX TRADING, LLC first buy MGNX?

Accepted Answer

Based on available 13F filings, SIMPLEX TRADING, LLC first reported a position in MGNX in 2024-Q3. They have held the position across 29 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	38,821	+714.9%	$179,353	0.0%	$4.62	37
2026-Q1	Decreased	4,764	-6.5%	$13,767	0.0%	$1.90	0
2025-Q4	Decreased	5,097	-28.4%	$8,206	0.0%	$1.56	0
2025-Q3	Increased	7,124	+42.2%	$11,000	0.0%	$1.75	16
2025-Q2	New	5,010	—	$6,000	0.0%	$1.19	24
2024-Q4	Exited	0	-100.0%	$0	0.0%	$3.23	0
2024-Q3	Increased	29,615	+3.3%	$97,000	0.0%	$3.19	22