Question 1

Which hedge funds and institutional investors hold ATO?

Accepted Answer

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

Accepted Answer

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

Question 3

How current is the whale data for ATO?

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 ATO?

Accepted Answer

QoQ changes for ATO 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	11.4M	$2.1B	0.1%	$2896.4B
Capital Research	4.0M	$740.8M	0.1%	$644.6B
American Century	1.0M	$185.2M	0.1%	$194.3B
Citadel	751.6K	$138.8M	0.0%	$618.5B
Geode Capital	529.5K	$97.8M	0.0%	$1607.5B
Jennison	346.1K	$63.9M	0.0%	$145.4B
Wellington	295.9K	$54.7M	0.0%	$535.5B
Millennium	261.4K	$48.3M	0.0%	$240.3B
ClearBridge	221.9K	$41.0M	0.0%	$114.9B
Renaissance Tech	166.8K	$30.8M	0.0%	$63.9B
Man Group	145.5K	$26.9M	0.0%	$55.1B
Gabelli	93.0K	$17.2M	0.1%	$14.8B
Two Sigma	90.0K	$16.6M	0.0%	$123.9B
WorldQuant	68.1K	$12.6M	0.0%	$25.9B
Gotham Asset	68.0K	$12.6M	0.0%	$32.7B
Tudor	47.0K	$8.7M	0.0%	$53.9B
DFA	37.6K	$6.9M	0.0%	$481.4B
Citadel	28.1K	$5.2M	0.0%	$618.5B
Northern Trust	26.1K	$4.8M	0.0%	$756.6B
Neuberger Berman (Eisman)	18.1K	$3.3M	0.0%	$131.4B
Invesco	15.0K	$2.8M	0.0%	$653.3B
PDT Partners	14.6K	$2.7M	0.2%	$1.7B
Schonfeld	10.5K	$1.9M	0.0%	$14.2B
Fisher Investments	8.2K	$1.5M	0.0%	$294.9B
Brevan Howard	8.0K	$1.5M	0.0%	$11.3B
Citadel	4.2K	$776K	0.0%	$618.5B
BlackRock	2.9K	$529K	—	$5723.5B
Balyasny	2.5K	$456K	0.0%	$77.1B
Fidelity (FMR)	273	$50K	—	$1898.4B
Franklin Templeton	95	$18K	—	$408.3B
AQR Capital	72	$13K	—	$218.4B
Kayne Anderson	7	$1K	—	$34.0B

ATO

Who Holds ATO