SIMPLEX TRADING, LLC

Position in MSCI — MSCI Inc.

CIK 1488542 CHICAGO, IL

Position in MSCI

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$334,186

+$161,494 QoQ

Shares Held

620

+106.0% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2020

8 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Financial Services · as of Mar 31, 2026

SIMPLEX TRADING, LLC holds $1,665,287 across 5 Financial Data & Stock Exchanges names. MSCI ranks #3 (20.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CME	Cme Group Inc.	3,061	$904,066
2	CBOE	Cboe Global Markets, Inc.	1,207	$339,251
3	MSCI	MSCI Inc. This page	620	$334,186
4	TRU	TransUnion	1,264	$87,456
5	DTCX	Datacentrex, Inc.	153	$328

8 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$334,186	620	+106.0%	Shares	Sole	2026-05-14
2025-12-31	$172,692	301	-92.6%	Shares	Sole	2026-02-11
2025-09-30	$2,308,791	4,069	-25.9%	Shares	Sole	2025-11-12
2025-03-31	$3,104,595	5,490	-24.6%	Shares	Sole	2025-05-12
2024-06-30	$3,509,548	7,285	+298.7%	Shares	Sole	2024-07-25
2021-09-30	$1,111,437	1,827	-9.9%	Shares	Sole	2021-10-28
2021-06-30	$1,080,553	2,027	-84.3%	Shares	Sole	2021-08-12
2020-12-31	$5,782,116	12,949	—	Shares	Sole	2021-02-02
No filing history on record for this holder in this stock.