Question 1

Which hedge funds and institutional investors hold RBRK?

Accepted Answer

StonkWhisper tracks 13F filings submitted to the SEC by institutional investment managers with over $100 million in assets. The whale tracker for RBRK 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 RBRK whale holdings?

Accepted Answer

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

Question 3

How current is the whale data for RBRK?

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 RBRK?

Accepted Answer

QoQ changes for RBRK 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	2.6M	$125.7M	0.0%	$2896.4B
Two Sigma	2.3M	$113.3M	0.1%	$123.9B
ClearBridge	1.4M	$70.9M	0.1%	$114.9B
Capital World	663.7K	$32.5M	0.0%	$732.9B
Citadel	510.0K	$25.0M	0.0%	$618.5B
Alkeon	500.0K	$24.5M	0.0%	$59.5B
Millennium	399.7K	$19.6M	0.0%	$240.3B
Geode Capital	398.9K	$19.5M	0.0%	$1607.5B
ARK Invest	395.0K	$19.3M	0.2%	$12.9B
Citadel	388.2K	$19.0M	0.0%	$618.5B
Renaissance Tech	377.5K	$18.5M	0.0%	$63.9B
Junto Capital	294.5K	$14.4M	0.3%	$4.7B
DE Shaw	213.1K	$10.4M	0.0%	$166.3B
DE Shaw	202.0K	$9.9M	0.0%	$166.3B
Marshall Wace	169.8K	$8.3M	0.0%	$100.4B
ExodusPoint	161.3K	$7.9M	0.1%	$12.4B
Citadel	158.2K	$7.7M	0.0%	$618.5B
Hudson Bay	124.0K	$6.1M	0.0%	$29.0B
Franklin Templeton	81.1K	$4.0M	0.0%	$408.3B
Millennium	64.9K	$3.2M	0.0%	$240.3B
Gotham Asset	55.2K	$2.7M	0.0%	$32.7B
Point72	38.9K	$1.9M	0.0%	$78.1B
WCM	41.3K	$1.9M	0.0%	$43.8B
Baillie Gifford	36.9K	$1.8M	0.0%	$97.9B
Bridgewater	35.7K	$1.7M	0.0%	$22.4B
Tudor	35.2K	$1.7M	0.0%	$53.9B
Winton	31.2K	$1.5M	0.1%	$2.9B
Schonfeld	26.6K	$1.3M	0.0%	$14.2B
Tudor	25.1K	$1.2M	0.0%	$53.9B
Wellington	21.2K	$1.0M	0.0%	$535.5B
Point72	20.7K	$1.0M	0.0%	$78.1B
Point72	14.7K	$720K	0.0%	$78.1B
DE Shaw	13.0K	$637K	0.0%	$166.3B
Thornburg	12.0K	$588K	0.0%	$9.6B
Brevan Howard	7.8K	$383K	0.0%	$11.3B
Man Group	7.2K	$354K	0.0%	$55.1B
BlackRock	6.8K	$335K	—	$5723.5B
WorldQuant	5.4K	$266K	0.0%	$25.9B
Two Sigma	5.0K	$245K	0.0%	$123.9B
American Century	5.0K	$244K	0.0%	$194.3B
DFA	2.4K	$119K	—	$481.4B
AQR Capital	969	$46K	—	$218.4B
Northern Trust	76	$4K	—	$756.6B
Fidelity (FMR)	54	$3K	—	$1898.4B
Acadian	16.3K	$796	0.0%	$70.5M

RBRK

Who Holds RBRK

Changes This Quarter