Question 1

Which hedge funds and institutional investors hold ATMU?

Accepted Answer

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

Accepted Answer

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

Question 3

How current is the whale data for ATMU?

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 ATMU?

Accepted Answer

QoQ changes for ATMU 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	1.9M	$107.6M	0.0%	$2896.4B
Eminence	1.3M	$72.8M	1.7%	—
Arrowstreet	999.5K	$56.7M	0.0%	$184.8B
William Blair	426.1K	$24.2M	0.1%	$30.3B
Geode Capital	287.8K	$16.3M	0.0%	$1607.5B
Schonfeld	286.7K	$16.3M	0.1%	$14.2B
Wellington	172.2K	$9.8M	0.0%	$535.5B
American Century	161.1K	$9.1M	0.0%	$194.3B
Hotchkis & Wiley	158.0K	$9.0M	0.0%	$32.4B
Marshall Wace	137.7K	$7.8M	0.0%	$100.4B
Millennium	118.6K	$6.7M	0.0%	$240.3B
Fidelity (FMR)	111.9K	$6.4M	0.0%	$1898.4B
Citadel	91.5K	$5.2M	0.0%	$618.5B
Two Sigma	86.0K	$4.9M	0.0%	$123.9B
ExodusPoint	81.8K	$4.6M	0.0%	$12.4B
DFA	68.5K	$3.9M	0.0%	$481.4B
DE Shaw	64.8K	$3.7M	0.0%	$166.3B
Brevan Howard	62.2K	$3.5M	0.0%	$11.3B
PDT Partners	45.6K	$2.6M	0.2%	$1.7B
Gabelli	38.5K	$2.2M	0.0%	$14.8B
Renaissance Tech	18.7K	$1.1M	0.0%	$63.9B
Citadel	17.0K	$965K	0.0%	$618.5B
Citadel	6.0K	$341K	0.0%	$618.5B
Winton	6.0K	$340K	0.0%	$2.9B
Northern Trust	4.5K	$253K	—	$756.6B
Neuberger Berman (Eisman)	3.8K	$216K	0.0%	$131.4B
Franklin Templeton	2.6K	$150K	—	$408.3B
BlackRock	153	$9K	—	$5723.5B
Acadian	139.7K	$8K	0.0%	$70.5M
AQR Capital	49	$3K	—	$218.4B

ATMU

Who Holds ATMU

Changes This Quarter