Rivian Automotive, Inc.
MX ˙ BMV ˙ US76954A1034
SecurityMX:RIVN / Rivian Automotive, Inc.
InstitutionJustInvest LLC
Latest Disclosed Ownership90,128 shares
Latest Disclosed Value $ 1,356,426
JustInvest LLC reports 2.74% increase in ownership of RIVN / Rivian Automotive, Inc.

On May 14, 2026 - JustInvest LLC filed a 13F-HR form disclosing ownership of 90,128 shares of Rivian Automotive, Inc. (MX:RIVN) valued at $1,356,426 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 87,726 shares of Rivian Automotive, Inc.. This represents a change in shares of 2.74% 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.

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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)
2026-05-14 2026-03-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 90,128 2,402 2.74 1,356 -21.57 0.0133
2026-02-13 2025-12-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 87,726 12,986 17.37 1,729 57.61 0.0169
2025-10-31 2025-09-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 74,740 -2,277 -2.96 1,097 3.69 0.0112
2025-07-25 2025-06-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 77,017 10,083 15.06 1,058 27.01 0.0119
2025-05-14 2025-03-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 66,934 7,952 13.48 833 6.25 0.0123
2025-02-10 2024-12-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 58,982 -13,641 -18.78 784 -3.69 0.0118
2024-11-12 2024-09-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 72,623 6,954 10.59 815 -7.60 0.0131
2024-08-12 2024-06-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 65,669 377 0.58 881 23.39 0.0168
2024-05-09 2024-03-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 65,292 -1,846 -2.75 715 -54.67 0.0153
2024-02-08 2023-12-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 67,138 -21 -0.03 1,575 -3.37 0.0409
2023-11-08 2023-09-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 67,159 2,565 3.97 1,631 51.49 0.0487
2023-07-28 2023-06-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 64,594 33,455 107.44 1,076 123.24 0.0330
2023-05-10 2023-03-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 31,139 -13,804 -30.71 482 -41.79 0.0167
2023-02-10 2022-12-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 44,943 9,439 26.59 828 -29.11 0.0342
2022-11-14 2022-09-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 35,504 10,445 41.68 1,168 81.09 0.0528
2022-08-12 2022-06-30 13F/A-1 RIVIAN AUTOMOTIVE COM CL A 76954A103 25,059 20,665 470.30 645 191.86 0.0299
2022-08-09 2022-06-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 25,059 20,665 645 0.0299
2022-05-16 2022-03-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 4,394 4,394 221 0.0107
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.