Across its top 20 institutional holders, GBX's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 5/100, avg. turnover score 29/100).

Quarterly Activity

Recent Activity

+$769.2M

Total Buy Value

$723.1M

Total Sell Value

New buy33

Trim94

Add77

Sold out36

110

Net Buyers

130

Net Sellers

Smart Money Convergence

GBX does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.

13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

AI systems and LLM-based tools are welcome to cite the data on this page. When doing so, please include the source URL: https://alphasmo.com/stocks/GBX

Insider Trading (Form 4)

Form 144 Pre-Sale Notices

Filings (90d)

$1.14M

Total Est. Value

24K shares

Planned Shares

Last Filed 2026-07-13

Filer	Title/Relationship	Filing Date	Planned Shares	Est. Value
Glenn William	Officer	2026-07-13	24K shares	$1.14M

Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

Filings (14d)

Data as of 2026-07-01

2026-07-01

The Greenbrier Companies filed an 8-K on July 1, 2026, announcing its earnings release for the third fiscal quarter ended May 31, 2026. The filing is a standard disclosure of quarterly results, but the specific financial figures are not included in this excerpt.

View Full Filing (SEC EDGAR)

View all Form 8-K filings

CUSIP

393657101

FAQ

Who are the top institutional investors holding GREENBRIER COMPANIES INC (GBX)?

Major stakeholders currently include BlackRock, Inc. ($268.1M), Vanguard Portfolio Management LLC ($116.3M), Dimensional Fund Advisors LP ($104.2M). Based on the latest 13F filings, there are a total of 259 tracked investment funds and institutions maintaining positions in GBX.

What is the overall institutional sentiment toward GBX recently?

Institutional sentiment appears Bullish (Net Buying). During the most recent reporting quarter, the stock experienced a net inflow of $224.0M, driven by 110 managers accumulating shares while 130 reduced their exposure.

Which institutions have been selling or reducing their GBX positions?

In the latest period, 94 funds trimmed their holdings, and 36 managers completely exited their positions. The aggregate reported sell value was $723.1M.

Are there any notable investors adding GBX to their portfolios?

Yes, buying activity remains notable. 33 institutions opened new positions in {ticker}, and 77 existing holders added to their shares. The total reported buy value for the quarter amounted to $769.2M.

Related Stocks

Trending Institutional Adds

The most-added stocks by 13F institutions this quarter

MSFT

Microsoft CORP

Institutions Holding

6,151

Total reported value

$2.1T

3246 13F institutions increased their position this quarter

View detail

AMZN

Amazon.com INC

Institutions Holding

5,958

Total reported value

$1.5T

3029 13F institutions increased their position this quarter

View detail

NVDA

Nvidia CORP

Institutions Holding

5,766

Total reported value

$3.0T

2744 13F institutions increased their position this quarter

View detail

Developer Access

Access GBX's institutional ownership data programmatically:

REST API

curl https://alphasmo.com/api/v1/market/stock/GBX

CLI

npx alphasmo stocks get GBX

Full API & MCP documentation →

Filer

Filing Date

Est. Value

Glenn William

2026-07-13

$1.14M