SIMPLEX TRADING, LLC

Position in NTRA — Natera, Inc.

CIK 1488542 CHICAGO, IL

Position in NTRA

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$3,941,182

+$3,564,401 QoQ

Shares Held

14,519

+670.6% QoQ

Ownership

0.010%

of shares outstanding

% of Portfolio

0.13%

of 13F equity value

Holder Rank

#289

of 834 holders

Holding Since

Mar 2020

15 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $17,754,789 across 23 Diagnostics & Research names. NTRA ranks #2 (22.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CRL	Charles River Laboratories International, Inc.	19,196	$4,353,460
2	NTRA	Natera, Inc. This page	14,519	$3,941,182
3	IQV	Iqvia Holdings Inc.	10,126	$1,956,545
4	MTD	Mettler Toledo International Inc/	1,327	$1,695,255
5	TMO	Thermo Fisher Scientific Inc.	2,213	$1,109,509
6	QGEN	Qiagen N.V.	26,002	$1,016,678
7	TWST	Twist Bioscience Corp	8,078	$831,064
8	NEO	Neogenomics Inc	54,589	$796,453

15 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$3,941,182	14,519	+670.6%	Shares	Sole	2026-08-12
2026-03-31	$376,781	1,884	-42.4%	Shares	Sole	2026-05-14
2025-12-31	$749,353	3,271	+99.7%	Shares	Sole	2026-02-11
2025-09-30	$263,668	1,638	-37.0%	Shares	Sole	2025-11-12
2024-09-30	$329,816	2,598	+15.9%	Shares	Sole	2024-11-08
2023-09-30	$99,208	2,242	-54.8%	Shares	Sole	2023-11-01
2023-06-30	$241,353	4,960	-29.3%	Shares	Sole	2023-08-04
2022-09-30	$307,265	7,012	-77.0%	Shares	Sole	2022-11-04
2022-03-31	$1,240,048	30,483	+34539.8%	Shares	Sole	2022-05-02
2021-09-30	$9,806	88	0.0%	Shares	Sole	2021-10-28
2021-06-30	$9,990	88	-81.3%	Shares	Sole	2021-08-12
2021-03-31	$47,723	470	-93.7%	Shares	Sole	2021-04-26
2020-09-30	$536,309	7,424	+28453.8%	Shares	Sole	2020-10-14
2020-06-30	$1,296	26	-99.2%	Shares	Sole	2020-07-13
2020-03-31	$91,849	3,076	—	Shares	Sole	2020-04-29
No filing history on record for this holder in this stock.