Question 1

Which hedge funds and institutional investors hold MAT?

Accepted Answer

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

Accepted Answer

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

Question 3

How current is the whale data for MAT?

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 MAT?

Accepted Answer

QoQ changes for MAT 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
PRIMECAP	29.7M	$431.5M	0.3%	$127.0B
State Street	9.7M	$141.2M	0.0%	$2896.4B
DE Shaw	3.7M	$54.3M	0.0%	$166.3B
Marshall Wace	3.0M	$43.6M	0.0%	$100.4B
Millennium	2.8M	$40.7M	0.0%	$240.3B
Point72	2.2M	$32.3M	0.0%	$78.1B
Millennium	1.5M	$21.8M	0.0%	$240.3B
Geode Capital	1.2M	$17.3M	0.0%	$1607.5B
Gotham Asset	802.4K	$11.7M	0.0%	$32.7B
DFA	658.9K	$9.6M	0.0%	$481.4B
Arrowstreet	644.3K	$9.4M	0.0%	$184.8B
Tudor	621.1K	$9.0M	0.0%	$53.9B
American Century	590.5K	$8.6M	0.0%	$194.3B
Invesco	574.2K	$8.3M	0.0%	$653.3B
Schonfeld	554.6K	$8.1M	0.1%	$14.2B
Winton	509.9K	$7.4M	0.3%	$2.9B
Man Group	444.4K	$6.5M	0.0%	$55.1B
Hotchkis & Wiley	376.2K	$5.5M	0.0%	$32.4B
Citadel	301.4K	$4.4M	0.0%	$618.5B
BlackRock	293.7K	$4.3M	0.0%	$5723.5B
GMO	233.4K	$3.4M	0.0%	$39.1B
Brevan Howard	138.9K	$2.0M	0.0%	$11.3B
Longleaf Partners	76.5K	$1.1M	0.1%	$2.0B
Citadel	72.0K	$1.0M	0.0%	$618.5B
Citadel	60.0K	$872K	0.0%	$618.5B
Bridgewater	41.3K	$600K	0.0%	$22.4B
Gabelli	40.0K	$581K	0.0%	$14.8B
Neuberger Berman (Eisman)	25.5K	$371K	0.0%	$131.4B
Northern Trust	13.6K	$198K	—	$756.6B
Fidelity (FMR)	7.3K	$106K	—	$1898.4B
LSV	6.2M	$91K	0.2%	$46.4M
AQR Capital	2.4K	$35K	—	$218.4B

MAT

Who Holds MAT

Changes This Quarter