Question 1

Which hedge funds and institutional investors hold MTRN?

Accepted Answer

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

Accepted Answer

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

Question 3

How current is the whale data for MTRN?

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 MTRN?

Accepted Answer

QoQ changes for MTRN 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	1.3M	$192.1M	0.0%	$2896.4B
American Century	882.7K	$127.7M	0.1%	$194.3B
Capital Research	789.9K	$114.3M	0.0%	$644.6B
Fisher Investments	442.0K	$63.9M	0.0%	$294.9B
Capital World	415.0K	$60.0M	0.0%	$732.9B
Segall Bryant	334.3K	$48.4M	0.7%	$7.0B
First Eagle	102.0K	$14.7M	0.0%	$59.0B
Geode Capital	73.9K	$10.7M	0.0%	$1607.5B
DFA	40.8K	$5.9M	0.0%	$481.4B
Citadel	38.1K	$5.5M	0.0%	$618.5B
Soros Fund	21.1K	$3.1M	0.0%	$9.1B
Arrowstreet	18.4K	$2.7M	0.0%	$184.8B
Millennium	14.5K	$2.1M	0.0%	$240.3B
Citadel	11.8K	$1.7M	0.0%	$618.5B
DE Shaw	8.2K	$1.2M	0.0%	$166.3B
Two Sigma	6.0K	$868K	0.0%	$123.9B
Franklin Templeton	5.4K	$780K	0.0%	$408.3B
Gabelli	4.5K	$651K	0.0%	$14.8B
Man Group	4.2K	$603K	0.0%	$55.1B
Bridgewater	3.7K	$530K	0.0%	$22.4B
Gotham Asset	2.8K	$400K	0.0%	$32.7B
Caxton	2.7K	$396K	0.0%	$4.4B
Neuberger Berman (Eisman)	2.6K	$371K	0.0%	$131.4B
Brevan Howard	1.6K	$228K	0.0%	$11.3B
Fidelity (FMR)	1.1K	$157K	—	$1898.4B
Northern Trust	1.0K	$151K	—	$756.6B
ARK Invest	571	$83K	0.0%	$12.9B
AQR Capital	387	$56K	—	$218.4B
BlackRock	114	$17K	—	$5723.5B
Kayne Anderson	72	$10K	—	$34.0B
Acadian	4.2K	$599	0.0%	$70.5M

MTRN

Who Holds MTRN

Changes This Quarter