Question 1

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

Accepted Answer

SIMPLEX TRADING, LLC previously held 0 shares of MRNS (MARINUS PHARMACEUTICALS INC) before exiting the position in 2025-Q1.

Question 2

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

Accepted Answer

SIMPLEX TRADING, LLC's MRNS position was last reported at $0 in 2025-Q1 before the exit.

Question 3

Is SIMPLEX TRADING, LLC buying or selling MRNS?

Accepted Answer

In 2025-Q1, SIMPLEX TRADING, LLC exited their MRNS position entirely (-100.0% change in shares).

Question 4

When did SIMPLEX TRADING, LLC first buy MRNS?

Accepted Answer

Based on available 13F filings, SIMPLEX TRADING, LLC first reported a position in MRNS in 2019-Q1. They have held the position across 24 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2025-Q1 Latest	Exited	0	-100.0%	$0	0.0%	—	0
2024-Q4	Decreased	9,526	-82.2%	$5,000	0.0%	—	0
2024-Q3	Decreased	53,637	-17.5%	$94,000	0.0%	—	0
2024-Q2	Decreased	65,041	-29.5%	$76,000	0.0%	—	0
2024-Q1	New	92,271	-	$834,000	0.0%	—	34
2023-Q4	Exited	0	-100.0%	$0	0.0%	—	0
2023-Q3	Decreased	7,895	-91.4%	$63,000	0.0%	—	0
2023-Q2	Decreased	91,735	-17.3%	$996,000	0.0%	—	0
2023-Q1	Increased	110,917	+32.0%	$765,000	0.0%	—	31
2022-Q4	Increased	84,005	+151.9%	$334,000	0.0%	—	38
2022-Q3	Increased	33,342	+3323.2%	$221,000	0.0%	—	37
2022-Q2	New	974	-	$4,000	0.0%	—	22
2021-Q4	Exited	0	-100.0%	$0	0.0%	—	0
2021-Q3	Decreased	8,193	-2.4%	$153,000	0.0%	—	0
2021-Q2	Decreased	8,393	-1.9%	$150,000	0.0%	—	0
2021-Q1	Decreased	8,557	-13.3%	$132,000	0.0%	—	0
2020-Q4	Increased	9,869	+33.5%	$0	0.0%	—	10
2020-Q3	Decreased	7,394	-60.5%	$95,000	0.0%	—	0
2020-Q2	Decreased	18,700	-14.4%	$47,000	0.0%	—	0
2020-Q1	Increased	21,844	+87.8%	$44,000	0.0%	—	32
2019-Q4	Increased	11,634	+278.2%	$25,000	0.0%	—	31
2019-Q3	Decreased	3,076	-95.5%	$4,000	0.0%	—	0
2019-Q2	Decreased	67,823	-73.3%	$281,000	0.0%	—	0
2019-Q1	New	254,199	-	$1.1M	0.0%	—	35

MRNS24 quarters

MRNS
24 quarters