The Greenbrier Companies, Inc.
MX ˙ BMV ˙ US3936571013
SecurityMX:GBX / The Greenbrier Companies, Inc.
InstitutionTectonic Advisors Llc
Latest Disclosed Ownership21,646 shares
Latest Disclosed Value $ 1,139,680
Tectonic Advisors Llc reports 6.90% increase in ownership of GBX / The Greenbrier Companies, Inc.

On April 17, 2026 - Tectonic Advisors Llc filed a 13F-HR form disclosing ownership of 21,646 shares of The Greenbrier Companies, Inc. (MX:GBX) valued at $1,139,680 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 20,249 shares of The Greenbrier Companies, Inc.. This represents a change in shares of 6.90% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-17 2026-03-31 13F GREENBRIER COS COM 393657101 21,646 1,397 6.90 1,140 20.40 0.0448
2026-01-23 2025-12-31 13F GREENBRIER COS COM 393657101 20,249 7,528 59.18 946 61.16 0.0374
2025-10-21 2025-09-30 13F GREENBRIER COS COM 393657101 12,721 -1,448 -10.22 587 -9.97 0.0321
2025-07-23 2025-06-30 13F GREENBRIER COS COM 393657101 14,169 -12,381 -46.63 652 -52.02 0.0379
2025-05-02 2025-03-31 13F GREENBRIER COS COM 393657101 26,550 -5,125 -16.18 1,360 -29.62 0.0850
2025-01-27 2024-12-31 13F GREENBRIER COS COM 393657101 31,675 1,097 3.59 1,932 24.10 0.1258
2024-10-23 2024-09-30 13F GREENBRIER COS COM 393657101 30,578 8,835 40.63 1,556 44.48 0.1016
2024-08-02 2024-06-30 13F GREENBRIER COS COM 393657101 21,743 8,839 68.50 1,077 60.27 0.0776
2024-05-07 2024-03-31 13F GREENBRIER COS COM 393657101 12,904 12,904 672 0.0513
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.