SIMPLEX TRADING, LLC

Position in QUBT — Quantum Computing Inc.

CIK 1488542 CHICAGO, IL

Position in QUBT

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

Position Value

$1,137,456

-$4,495,786 QoQ

Shares Held

166,052

-69.8% QoQ

Ownership

0.074%

of shares outstanding

% of Portfolio

0.04%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2022

12 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Mar 31, 2026

SIMPLEX TRADING, LLC holds $12,268,881 across 17 Computer Hardware names. QUBT ranks #5 (9.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	RGTI	Rigetti Computing, Inc.	268,841	$3,774,527
2	WDC	Western Digital Corp	5,785	$1,564,784
3	DELL	Dell Technologies Inc.	9,098	$1,493,254
4	IONQ	IonQ, Inc.	46,557	$1,342,238
5	QUBT	Quantum Computing Inc. This page	166,052	$1,137,456
6	STX	Seagate Technology Holdings plc	2,599	$1,018,184
7	SNDK	Sandisk Corp	1,558	$989,859
8	NNDM	Nano Dimension Ltd.	222,218	$377,770

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,137,456	166,052	-69.8%	Shares	Sole	2026-05-14
2025-12-31	$5,633,242	549,049	+398.0%	Shares	Sole	2026-02-11
2025-03-31	$882,048	110,256	+246.6%	Shares	Sole	2025-05-12
2024-12-31	$526,422	31,808	+133.8%	Shares	Sole	2025-02-11
2024-09-30	$8,883	13,604	+324.5%	Shares	Sole	2024-11-08
2024-06-30	$1,608	3,205	+127.8%	Shares	Sole	2024-07-25
2023-12-31	$1,284	1,407	-90.4%	Shares	Sole	2024-02-02
2023-03-31	$19,285	14,722	+1.5%	Shares	Sole	2023-04-27
2022-12-31	$21,910	14,510	-22.7%	Shares	Sole	2023-02-02
2022-09-30	$47,095	18,763	+494.9%	Shares	Sole	2022-11-04
2022-06-30	$7,506	3,154	-42.5%	Shares	Sole	2022-08-03
2022-03-31	$14,271	5,489	—	Shares	Sole	2022-05-02
No filing history on record for this holder in this stock.