Question 1

Which hedge funds and institutional investors hold GBX?

Accepted Answer

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

Accepted Answer

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

Question 3

How current is the whale data for GBX?

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 GBX?

Accepted Answer

QoQ changes for GBX 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
American Century	1.5M	$80.1M	0.0%	$194.3B
State Street	1.2M	$62.3M	0.0%	$2896.4B
Balyasny	417.5K	$22.0M	0.0%	$77.1B
Hotchkis & Wiley	399.9K	$21.1M	0.1%	$32.4B
DE Shaw	359.5K	$18.9M	0.0%	$166.3B
Tudor	232.2K	$12.2M	0.0%	$53.9B
Fisher Investments	203.5K	$10.7M	0.0%	$294.9B
Geode Capital	108.6K	$5.7M	0.0%	$1607.5B
Gabelli	92.2K	$4.9M	0.0%	$14.8B
Segall Bryant	65.6K	$3.5M	0.0%	$7.0B
BlackRock	63.2K	$3.3M	0.0%	$5723.5B
DFA	61.4K	$3.2M	0.0%	$481.4B
Marshall Wace	53.6K	$2.8M	0.0%	$100.4B
Citadel	42.0K	$2.2M	0.0%	$618.5B
Two Sigma	35.0K	$1.8M	0.0%	$123.9B
Franklin Templeton	20.0K	$1.1M	0.0%	$408.3B
Millennium	18.1K	$952K	0.0%	$240.3B
Northern Trust	15.4K	$811K	0.0%	$756.6B
Citadel	12.2K	$642K	0.0%	$618.5B
Citadel	9.6K	$505K	0.0%	$618.5B
Horizon Kinetics	8.7K	$458K	0.0%	$9.2B
Schonfeld	5.7K	$300K	0.0%	$14.2B
Caxton	5.2K	$273K	0.0%	$4.4B
PDT Partners	4.8K	$252K	0.0%	$1.7B
LSV	786.3K	$41K	0.1%	$46.4M
Fidelity (FMR)	739	$39K	—	$1898.4B
AQR Capital	395	$21K	—	$218.4B
Neuberger Berman (Eisman)	20	$1K	—	$131.4B

GBX

Who Holds GBX

Changes This Quarter