Question 1

Which hedge funds and institutional investors hold CSTL?

Accepted Answer

StonkWhisper tracks 13F filings submitted to the SEC by institutional investment managers with over $100 million in assets. The whale tracker for CSTL shows which major funds hold positions, their portfolio weight, share counts, and how those positions changed quarter over quarter.

Question 2

What does conviction level mean for CSTL whale holdings?

Accepted Answer

Conviction level reflects how significant CSTL is within a fund's overall portfolio. A high-conviction position means the manager has allocated a large percentage of their portfolio to CSTL, suggesting strong directional confidence in the stock.

Question 3

How current is the whale data for CSTL?

Accepted Answer

Institutional 13F filings are required within 45 days of each calendar quarter end (March 31, June 30, September 30, December 31). StonkWhisper processes filings as they are published on SEC EDGAR, so data reflects the most recently reported quarter.

Question 4

What do quarter-over-quarter changes tell me about CSTL?

Accepted Answer

QoQ changes for CSTL show whether institutional managers are increasing, decreasing, initiating, or exiting their positions. New positions and significant increases can signal growing institutional conviction, while exits or decreases may indicate waning confidence.

Manager	Shares	Value	% of Portfolio	Manager AUM
State Street	769.1K	$18.9M	0.0%	$2896.4B
Renaissance Tech	532.8K	$13.1M	0.0%	$63.9B
Millennium	353.3K	$8.7M	0.0%	$240.3B
Two Sigma	248.8K	$6.1M	0.0%	$123.9B
Tudor	223.0K	$5.5M	0.0%	$53.9B
DE Shaw	212.0K	$5.2M	0.0%	$166.3B
Geode Capital	103.2K	$2.5M	0.0%	$1607.5B
Citadel	88.3K	$2.2M	0.0%	$618.5B
American Century	79.1K	$1.9M	0.0%	$194.3B
Man Group	47.1K	$1.2M	0.0%	$55.1B
Invesco	45.3K	$1.1M	0.0%	$653.3B
Schonfeld	42.4K	$1.0M	0.0%	$14.2B
ExodusPoint	32.6K	$801K	0.0%	$12.4B
Citadel	32.5K	$798K	0.0%	$618.5B
Arrowstreet	27.1K	$666K	0.0%	$184.8B
DFA	27.1K	$665K	0.0%	$481.4B
Brevan Howard	18.6K	$456K	0.0%	$11.3B
BlackRock	16.9K	$414K	—	$5723.5B
Citadel	12.5K	$307K	—	$618.5B
Franklin Templeton	3.1K	$76K	—	$408.3B
Northern Trust	2.4K	$59K	—	$756.6B
Acadian	484.4K	$12K	0.0%	$70.5M
AQR Capital	484	$12K	—	$218.4B
Fidelity (FMR)	224	$5K	—	$1898.4B

CSTL

Who Holds CSTL

Changes This Quarter