New England Research & Management, Inc.

Position in NTRA — Natera, Inc.

CIK 1596077 CHICAGO, IL

Position in NTRA

as of Jun 30, 2026 · filed Jul 9, 2026 Compact

Position Value

$386,816

-$498,139 QoQ

Shares Held

1,425

-67.8% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.15%

of 13F equity value

Holder Rank

#576

of 844 holders

Holding Since

Jun 2025

4 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

New England Research & Management, Inc. holds $1,976,509 across 3 Diagnostics & Research names. NTRA ranks #2 (19.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TMO	Thermo Fisher Scientific Inc.	2,588	$1,297,519
2	NTRA	Natera, Inc. This page	1,425	$386,816
3	IDXX	Idexx Laboratories Inc /De	555	$292,174

4 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$386,816	1,425	-67.8%	Shares	Sole	2026-07-09
2026-03-31	$884,955	4,425	-28.9%	Shares	Sole	2026-05-07
2025-09-30	$1,002,038	6,225	+301.6%	Shares	Sole	2025-10-06
2025-06-30	$261,857	1,550	—	Shares	Sole	2025-07-09
No filing history on record for this holder in this stock.