Rivian Automotive, Inc.
DE ˙ DB ˙ US76954A1034
15,33 € ↓ -0,03 (-0,17%)
2026-06-04
DEL PRIS
SecurityDE:99U / Rivian Automotive, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership10,321,452 shares
Latest Disclosed Value $ 155,337,876
Morgan Stanley reports 15.55% decrease in ownership of 99U / Rivian Automotive, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 10,321,452 shares of Rivian Automotive, Inc. (DE:99U) valued at $129,431,008 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 12,222,479 shares of Rivian Automotive, Inc.. This represents a change in shares of -15.55% during the quarter. The current value of the position is $158,269,145 USD.

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)
2026-05-15 2026-03-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 10,321,452 -1,901,027 -15.55 155,338 -35.52 0.0094
2026-05-27 2025-12-31 13F/A-1 RIVIAN AUTOMOTIVE COM CL A 76954A103 12,222,479 3,903,835 46.93 240,905 97.27 0.0144
2026-02-13 2025-12-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 12,222,479 3,903,835 240,905 0.0144
2026-05-27 2025-09-30 13F/A-1 RIVIAN AUTOMOTIVE COM CL A 76954A103 8,318,644 -3,618,449 -30.31 122,118 -25.55 0.0074
2025-11-14 2025-09-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 8,318,644 -3,618,449 122,118 0.0074
2025-08-15 2025-06-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 11,937,093 -5,079,695 -29.85 164,016 -22.58 0.0107
2025-05-15 2025-03-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 17,016,788 -2,448,107 -12.58 211,859 -18.16 0.0151
2025-05-15 2024-12-31 13F/A-1 RIVIAN AUTOMOTIVE COM CL A 76954A103 19,464,895 1,077,064 5.86 258,883 25.48 0.0181
2025-02-14 2024-12-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 19,464,895 1,077,064 258,883 0.0181
2025-05-14 2024-09-30 13F/A-2 RIVIAN AUTOMOTIVE COM CL A 76954A103 18,387,831 686,592 3.88 206,311 -13.15 0.0150
2025-02-14 2024-09-30 13F/A-1 RIVIAN AUTOMOTIVE COM CL A 76954A103 18,387,831 686,592 206,311 0.0150
2024-11-14 2024-09-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 18,387,831 686,592 206,311 0.0150
2025-05-14 2024-06-30 13F/A-2 RIVIAN AUTOMOTIVE COM CL A 76954A103 17,701,239 5,727,542 47.83 237,551 81.18 0.0184
2024-10-17 2024-06-30 13F/A-1 RIVIAN AUTOMOTIVE COM CL A 76954A103 17,701,239 5,727,542 237,551 0.0184
2024-08-14 2024-06-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 17,701,239 5,727,542 237,551 0.0184
2024-10-17 2024-03-31 13F/A-2 RIVIAN AUTOMOTIVE COM CL A 76954A103 11,973,697 211,774 1.80 131,112 -52.48 0.0105
2024-08-16 2024-03-31 13F/A-1 RIVIAN AUTOMOTIVE COM CL A 76954A103 11,973,697 211,774 131,112 0.0105
2024-05-15 2024-03-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 11,973,697 211,774 131,112 0.0105
2024-08-16 2023-12-31 13F/A-1 RIVIAN AUTOMOTIVE COM CL A 76954A103 11,761,923 2,066,347 21.31 275,935 17.22 0.0243
2024-02-13 2023-12-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 11,761,923 2,066,347 275,935 0.0243
2023-11-15 2023-09-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 9,695,576 1,193,650 14.04 235,409 66.20 0.0239
2023-08-14 2023-06-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 8,501,926 1,755,899 26.03 141,642 35.64 0.0140
2023-05-15 2023-03-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 6,746,027 634,514 10.38 104,429 -7.29 0.0112
2023-02-14 2022-12-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 6,111,513 -203,796 -3.23 112,635 -45.81 0.0128
2022-11-14 2022-09-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 6,315,309 727,922 13.03 207,837 44.51 0.0283
2022-10-27 2022-06-30 13F/A-1 RIVIAN AUTOMOTIVE COM CL A 76954A103 5,587,387 1,697,972 43.66 143,819 -26.40 0.0187
2022-08-15 2022-06-30 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 5,587,387 1,697,972 143,819 0.0187
2022-10-27 2022-03-31 13F/A-1 RIVIAN AUTOMOTIVE COM CL A 76954A103 3,889,415 253,172 6.96 195,405 -48.17 0.0264
2022-05-13 2022-03-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 3,889,415 253,172 195,405 0.0264
2022-02-14 2021-12-31 13F RIVIAN AUTOMOTIVE COM CL A 76954A103 3,636,243 3,636,243 377,043 0.0466
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.