Mackenzie Financial
CSTL icon

Mackenzie Financial’s Castle Biosciences CSTL Stock Holding History

Mackenzie Financial’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
Q1 		$1.82M Buy
74,111
+36,794
+99% +$1.21M ﹤0.01% 946
2025
Q4 		$1.46M Buy
37,317
+13,113
+54% +$423K ﹤0.01% 961
2025
Q3 		$551K Hold
24,204
– – ﹤0.01% 1223
2025
Q2 		$494K Sell
24,204
-3,256
-12% -$60.3K ﹤0.01% 1232
2025
Q1 		$550K Buy
27,460
+6,440
+31% +$159K ﹤0.01% 1168
2024
Q4 		$560K Buy
+21,020
New +$640K ﹤0.01% 1119

Other funds holding CSTL

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $187B AUM 18.48% 1-Year Est. Return
PCM
Portolan Capital Management Boston, Massachusetts $1.88B AUM 115.74% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
SPPAM
Summit Partners Public Asset Management Boston, Massachusetts $3.72B AUM 162.29% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Allianz Asset Management
Allianz Asset Management Munich, Germany $95.4B AUM 38.74% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Mackenzie Financial's CSTL Position: Q1 2026 in Review

Mackenzie Financial increased its Castle Biosciences (CSTL) stake by 99% in Q1 2026, buying an estimated $1.21M and bringing the position to 74,111 shares worth $1.82M. The position accounts for ﹤0.01% of the portfolio, ranked #946.

Mackenzie Financial first reported a position in CSTL in Q4 2024 and has held it in 6 quarters since. 186 funds tracked by Wall St. Rank hold CSTL as of Q1 2026.

  • Mackenzie Financial held 74,111 shares of Castle Biosciences worth $1.82M as of Q1 2026.
  • Mackenzie Financial bought 36,794 Castle Biosciences shares in Q1 2026, an estimated $1.21M.
  • Castle Biosciences made up ﹤0.01% of Mackenzie Financial's portfolio in Q1 2026, its #946 holding.
  • Mackenzie Financial first reported a position in Castle Biosciences in Q4 2024 and has held it in 6 quarters since.
  • 186 funds tracked by Wall St. Rank held Castle Biosciences as of Q1 2026.

Based on Mackenzie Financial's 13F filing for Q1 2026, filed 13 May 2026.