CASTLEARK MANAGEMENT LLC

Position in GH — Guardant Health, Inc.

CIK 1106832 CHICAGO, IL

Position in GH

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$12,046,358

-$2,758,982 QoQ

Shares Held

80,293

-49.9% QoQ

Ownership

0.060%

of shares outstanding

% of Portfolio

0.37%

of 13F equity value

Holder Rank

#150

of 594 holders

Holding Since

Dec 2020

7 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

CASTLEARK MANAGEMENT LLC holds $31,877,319 across 5 Diagnostics & Research names. GH ranks #1 (37.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	GH	Guardant Health, Inc. This page	80,293	$12,046,358
2	CRL	Charles River Laboratories International, Inc.	36,045	$8,174,645
3	DGX	Quest Diagnostics Inc	31,480	$6,672,186
4	VCYT	Veracyte, Inc.	72,016	$4,229,499
5	NTRA	Natera, Inc.	2,780	$754,631

7 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$12,046,358	80,293	-49.9%	Shares	Sole	2026-08-14
2026-03-31	$14,805,340	160,283	-2.9%	Shares	Sole	2026-05-15
2025-12-31	$16,857,492	165,043	+3.1%	Shares	Sole	2026-02-13
2025-09-30	$10,001,361	160,073	+31.7%	Shares	Sole	2025-11-17
2025-06-30	$6,325,982	121,560	+774.7%	Shares	Sole	2025-08-18
2021-03-31	$2,121,529	13,898	-40.5%	Shares	Sole	2021-05-14
2020-12-31	$3,011,667	23,368	—	Shares	Sole	2021-02-17
No filing history on record for this holder in this stock.