Portolan Capital Management - CASTLE BIOSCIENCES INC ownership

CASTLE BIOSCIENCES INC's ticker is CSTL and the CUSIP is 14843C105. A total of 181 filers reported holding CASTLE BIOSCIENCES INC in Q2 2021. The put-call ratio across all filers is 0.24 and the average weighting 0.1%.

Quarter-by-quarter ownership
Portolan Capital Management ownership history of CASTLE BIOSCIENCES INC
ValueSharesWeighting
Q3 2023$4,273,643
-27.8%
253,028
-41.4%
0.40%
-23.9%
Q2 2023$5,919,823
+1.5%
431,474
+68.1%
0.52%
-5.6%
Q1 2023$5,831,065
-57.6%
256,649
-56.0%
0.56%
-59.3%
Q4 2022$13,740,675
+75.3%
583,716
+94.2%
1.36%
+64.6%
Q3 2022$7,839,000
+130.4%
300,590
+94.0%
0.83%
+141.4%
Q2 2022$3,402,000
+408.5%
154,968
+1597.9%
0.34%
+614.6%
Q2 2021$669,000
-39.9%
9,127
-44.9%
0.05%
-52.5%
Q4 2020$1,113,000
-21.7%
16,573
-40.0%
0.10%
-37.3%
Q3 2020$1,422,000
-47.5%
27,632
-61.5%
0.16%
-47.9%
Q2 2020$2,707,000
-33.1%
71,834
-47.0%
0.31%
-49.1%
Q1 2020$4,044,000
-61.5%
135,654
-55.6%
0.61%
-42.8%
Q4 2019$10,503,000
+364.7%
305,578
+144.6%
1.06%
+316.1%
Q3 2019$2,260,000124,9310.26%
Other shareholders
CASTLE BIOSCIENCES INC shareholders Q2 2021
NameSharesValueWeighting ↓
ABG Innovation Capital Partners III GP Ltd 33,626$567,94377.21%
Millrace Asset Group, Inc. 77,315$1,3061.61%
Granahan Investment Management 2,487,673$42,016,7971.50%
Parkman Healthcare Partners LLC 224,592$3,793,3590.70%
PERKINS CAPITAL MANAGEMENT INC 29,160$4930.49%
Capital Impact Advisors, LLC 16,554$279,5970.47%
Soleus Capital Management, L.P. 283,500$4,788,3150.44%
Portolan Capital Management 253,028$4,273,6430.40%
Numerai GP LLC 68,163$1,151,2730.38%
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) 946,620$15,988,4120.35%
View complete list of CASTLE BIOSCIENCES INC shareholders