Question 1

Which hedge funds and institutional investors hold MKTX?

Accepted Answer

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

Accepted Answer

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

Question 3

How current is the whale data for MKTX?

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 MKTX?

Accepted Answer

QoQ changes for MKTX 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	3.3M	$552.2M	0.4%	$127.0B
State Street	1.3M	$211.3M	0.0%	$2896.4B
Millennium	1.1M	$179.4M	0.1%	$240.3B
Two Sigma	524.0K	$86.5M	0.1%	$123.9B
Arrowstreet	295.5K	$48.7M	0.0%	$184.8B
Point72	252.8K	$41.7M	0.1%	$78.1B
Renaissance Tech	167.1K	$27.6M	0.0%	$63.9B
Millennium	118.2K	$19.5M	0.0%	$240.3B
Geode Capital	100.8K	$16.6M	0.0%	$1607.5B
Citadel	75.8K	$12.5M	0.0%	$618.5B
Gotham Asset	60.2K	$9.9M	0.0%	$32.7B
Schonfeld	42.6K	$7.0M	0.0%	$14.2B
DFA	29.4K	$4.8M	0.0%	$481.4B
ExodusPoint	24.0K	$4.0M	0.0%	$12.4B
Citadel	21.0K	$3.5M	0.0%	$618.5B
Citadel	19.5K	$3.2M	0.0%	$618.5B
Winton	18.0K	$3.0M	0.1%	$2.9B
American Century	16.2K	$2.7M	0.0%	$194.3B
Franklin Templeton	10.4K	$1.7M	0.0%	$408.3B
BlackRock	9.4K	$1.6M	—	$5723.5B
Neuberger Berman (Eisman)	9.0K	$1.5M	0.0%	$131.4B
Bridgewater	5.6K	$925K	0.0%	$22.4B
PDT Partners	4.3K	$706K	0.0%	$1.7B
DE Shaw	3.3K	$547K	0.0%	$166.3B
Baillie Gifford	3.1K	$515K	0.0%	$97.9B
Horizon Kinetics	2.1K	$347K	0.0%	$9.2B
Man Group	1.1K	$173K	0.0%	$55.1B
Fidelity (FMR)	550	$91K	—	$1898.4B
Balyasny	185	$31K	—	$77.1B
Northern Trust	179	$30K	—	$756.6B
First Eagle	22	$4K	—	$59.0B
AQR Capital	9	$1K	—	$218.4B

MKTX

Who Holds MKTX

Changes This Quarter