Simplex Trading, LLC

Filing Details

13F-HR • 2025-03-31

SEC FilingSEC DataHachi Filing

Report Date: 2025-03-31
Filing Date: 2025-05-12
Total Holdings: 8,744
Total Value: 141360883
Accession Number: 0001488542-25-000007
Form Type: 13F-HR
CIK: 0001488542
Manager Name: Simplex Trading, LLC

Data Enrichment

22% identified

1,894 identified6,850 unidentified

Holdings

SEC FilingSEC DataHachi Filing

Manager:

8,744 positions • $141,360.883K total value

8,744 positions

Manager:

SEC FilingSEC DataHachi Filing

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232109108

156708

Value:

$1.0K

553859959

200(-96.8%)

Value:

$1.0K(-98.0%)

319829957

100

Value:

$1.0K

00109K905

200(-77.8%)

Value:

$1.0K(-80.0%)

57777K906

600(-94.9%)

Value:

$1.0K(-97.9%)

22978P956

1100

Value:

$1.0K

Seer, Inc.

SEER|81578P106

712(-71.3%)

Value:

$1.0K(-80.0%)

18270P959

500(-97.0%)

Value:

$1.0K(-98.7%)

49372L959

400(-33.3%)

Value:

$1.0K(-75.0%)

929566907

100(-96.4%)

Value:

$1.0K(-97.9%)

H5012F903

800

Value:

$1.0K

372284908

100

Value:

$1.0K

67623C909

2200(-50.0%)

Value:

$1.0K(-75.0%)

CUMULUS MEDIA INC

CMLS|231082801

3135(-49.1%)

Value:

$1.0K(-75.0%)

301505959

100(-90.9%)

Value:

$1.0K(-94.1%)

46138E955

100(-50.0%)

Value:

$1.0K(-50.0%)

G01125956

100(+0.0%)

Value:

$1.0K(+0.0%)

Mersana Therapeutics, Inc.

MRSN|59045L106

3424

Value:

$1.0K

886364462

54(+0.0%)

Value:

$1.0K(-50.0%)

055645903

100(-90.0%)

Value:

$1.0K(-94.4%)

Instrument	Shares		Other Manager	Value
(cusip232109108)✕	156.7K	QoQ NEW(+156.7K) YoY NEW(+156.7K)	All Managers (Combined)	$1.0K	QoQ NEW(+$0) YoY NEW(+$0)
(cusip553859959)✕	200	QoQ -96.82% (-6.1K) YoY -95.91% (-4.7K)	All Managers (Combined)	$1.0K	QoQ -98.00% (-$0) YoY -98.07% (-$0)
(cusip319829957)✕	100	QoQ NEW(+100) YoY NEW(+100)	All Managers (Combined)	$1.0K	QoQ NEW(+$0) YoY NEW(+$0)
(cusip00109K905)✕	200	QoQ -77.77% (-700) YoY -99.10% (-22.1K)	All Managers (Combined)	$1.0K	QoQ -80.00% (-$0) YoY -99.63% (-$0)
(cusip57777K906)✕	600	QoQ -94.87% (-11.1K) YoY NEW(+600)	All Managers (Combined)	$1.0K	QoQ -97.91% (-$0) YoY NEW(+$0)
(cusip22978P956)✕	1.1K	QoQ NEW(+1.1K) YoY -82.53% (-5.2K)	All Managers (Combined)	$1.0K	QoQ NEW(+$0) YoY -90.90% (-$0)
Seer, Inc.(SEERcusip81578P106)	712	QoQ -71.25% (-1.8K) YoY NEW(+712)	All Managers (Combined)	$1.0K	QoQ -80.00% (-$0) YoY NEW(+$0)
(cusip18270P959)✕	500	QoQ -97.05% (-16.5K) YoY -16.66% (-100)	All Managers (Combined)	$1.0K	QoQ -98.68% (-$0) YoY -75.00% (-$0)
(cusip49372L959)✕	400	QoQ -33.33% (-200) YoY NEW(+400)	All Managers (Combined)	$1.0K	QoQ -75.00% (-$0) YoY NEW(+$0)
(cusip929566907)✕	100	QoQ -96.42% (-2.7K) YoY -95.45% (-2.1K)	All Managers (Combined)	$1.0K	QoQ -97.87% (-$0) YoY -98.46% (-$0)
(cusipH5012F903)✕	800	QoQ NEW(+800) YoY NEW(+800)	All Managers (Combined)	$1.0K	QoQ NEW(+$0) YoY NEW(+$0)
(cusip372284908)✕	100	QoQ NEW(+100) YoY -99.55% (-22.4K)	All Managers (Combined)	$1.0K	QoQ NEW(+$0) YoY -99.70% (-$0)
(cusip67623C909)✕	2.2K	QoQ -50.00% (-2.2K) YoY -73.17% (-6.0K)	All Managers (Combined)	$1.0K	QoQ -75.00% (-$0) YoY -93.75% (-$0)
Cumulus Media Inc(CMLScusip231082801)	3.1K	QoQ -49.14% (-3.0K) YoY NEW(+3.1K)	All Managers (Combined)	$1.0K	QoQ -75.00% (-$0) YoY NEW(+$0)
(cusip301505959)✕	100	QoQ -90.90% (-1.0K) YoY -94.73% (-1.8K)	All Managers (Combined)	$1.0K	QoQ -94.11% (-$0) YoY -96.00% (-$0)
(cusip46138E955)✕	100	QoQ -50.00% (-100) YoY -93.75% (-1.5K)	All Managers (Combined)	$1.0K	QoQ -50.00% (-$0) YoY -98.59% (-$0)
(cusipG01125956)✕	100	QoQ 0.00% (+0) YoY NEW(+100)	All Managers (Combined)	$1.0K	QoQ 0.00% (+$0) YoY NEW(+$0)
Mersana Therapeutics, Inc.(MRSNcusip59045L106)	3.4K	QoQ NEW(+3.4K) YoY -57.41% (-4.6K)	All Managers (Combined)	$1.0K	QoQ NEW(+$0) YoY -97.22% (-$0)
(cusip886364462)✕	54	QoQ 0.00% (-0) YoY NEW(+54)	All Managers (Combined)	$1.0K	QoQ -50.00% (-$0) YoY NEW(+$0)
(cusip055645903)✕	100	QoQ -90.00% (-900) YoY NEW(+100)	All Managers (Combined)	$1.0K	QoQ -94.44% (-$0) YoY NEW(+$0)