Green Alpha Advisors’s Castle Biosciences CSTL Stock Holding History

Green Alpha Advisors’s Portfolio CSTL Stock Details CSTL Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q3	$491K	Buy	13,828 +3,887	+39%	+$117K	0.33%	76
2026 Q2	$237K	Sell	9,941 -4	-0%	-$89	0.16%	94
2026 Q1	$244K	Sell	9,945 -291	-3%	-$9.5K	0.24%	84
2025 Q4	$398K	Buy	10,236 +698	+7%	+$22.5K	0.36%	83
2025 Q3	$217K	Buy	+9,538	New	+$194K	0.21%	88
2025 Q1	–	Sell	-9,327	Closed	-$249K	–	121
2024 Q4	$249K	Buy	+9,327	New	+$284K	0.2%	120

Other funds holding CSTL

Wasatch Advisors Salt Lake City, Utah $13.5B AUM 16.58% 1-Year Est. Return

FBT

First Bank & Trust Brookings, South Dakota $687M AUM 18.35% 1-Year Est. Return

Oak Harvest Investment Services Houston, Texas $1.07B AUM 32.83% 1-Year Est. Return

Wealth Enhancement Advisory Services Plymouth, Minnesota $67.3B AUM 21.9% 1-Year Est. Return

Farther Finance Advisors San Francisco, California $14.2B AUM 18.33% 1-Year Est. Return

Newbridge Financial Services Group Boca Raton, Florida $868M AUM 42.47% 1-Year Est. Return

GWM

GK Wealth Management Reno, Nevada $178M AUM 41.48% 1-Year Est. Return

Essential Partners Rancho Santa Fe, California $219M AUM 37.92% 1-Year Est. Return

Versant Capital Management Phoenix, Arizona $1.17B AUM 28.44% 1-Year Est. Return

IFP Advisors Tampa, Florida $5.86B AUM 20.09% 1-Year Est. Return

Green Alpha Advisors's CSTL Position: Q3 2026 in Review

Green Alpha Advisors increased its Castle Biosciences (CSTL) stake by 39% in Q3 2026, buying an estimated $117K and bringing the position to 13,828 shares worth $491K. The position accounts for 0.33% of the portfolio, ranked #76.

Green Alpha Advisors first reported a position in CSTL in Q4 2024 and has held it in 6 quarters since. 14 funds tracked by Wall St. Rank hold CSTL as of Q3 2026.

Green Alpha Advisors held 13,828 shares of Castle Biosciences worth $491K as of Q3 2026.
Green Alpha Advisors bought 3,887 Castle Biosciences shares in Q3 2026, an estimated $117K.
Castle Biosciences made up 0.33% of Green Alpha Advisors's portfolio in Q3 2026, its #76 holding.
Green Alpha Advisors first reported a position in Castle Biosciences in Q4 2024 and has held it in 6 quarters since.
14 funds tracked by Wall St. Rank held Castle Biosciences as of Q3 2026.

Based on Green Alpha Advisors's 13F filing for Q3 2026, filed 8 Oct 2026.