Tesla, Inc.
CH ˙ SWX ˙ US88160R1014
SecurityCH:TSLA / Tesla, Inc.
InstitutionMattern Capital Management, Llc
Latest Disclosed Ownership2,229 shares
Latest Disclosed Value $ 828,631
Mattern Capital Management, Llc reports 54.18% decrease in ownership of TSLA / Tesla, Inc.

On May 4, 2026 - Mattern Capital Management, Llc filed a 13F-HR form disclosing ownership of 2,229 shares of Tesla, Inc. (CH:TSLA) valued at $828,631 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 4,865 shares of Tesla, Inc.. This represents a change in shares of -54.18% 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)
2026-05-04 2026-03-31 13F TESLA COM 88160R101 2,229 -2,636 -54.18 829 -62.14 0.0993
2026-01-29 2025-12-31 13F TESLA COM 88160R101 4,865 -454 -8.54 2,188 -7.53 0.2583
2025-10-21 2025-09-30 13F TESLA COM 88160R101 5,319 350 7.04 2,365 49.87 0.2781
2025-07-21 2025-06-30 13F TESLA COM 88160R101 4,969 655 15.18 1,578 41.14 0.1896
2025-04-23 2025-03-31 13F TESLA COM 88160R101 4,314 33 0.77 1,118 -35.30 0.1423
2025-02-03 2024-12-31 13F TESLA COM 88160R101 4,281 -2,086 -32.76 1,729 3.78 0.2253
2024-10-24 2024-09-30 13F TESLA COM 88160R101 6,367 448 7.57 1,666 42.19 0.2096
2024-08-02 2024-06-30 13F TESLA COM 88160R101 5,919 724 13.94 1,171 28.26 0.1618
2024-05-14 2024-03-31 13F TESLA COM 88160R101 5,195 1,307 33.62 913 -5.49 0.1240
2024-02-14 2023-12-31 13F TESLA COM 88160R101 3,888 -6 -0.15 966 -0.82 0.1404
2023-11-08 2023-09-30 13F TESLA COM 88160R101 3,894 -40 -1.02 974 -5.34 0.1576
2023-08-08 2023-06-30 13F TESLA COM 88160R101 3,934 -425 -9.75 1,030 13.83 0.1672
2023-05-12 2023-03-31 13F TESLA COM 88160R101 4,359 0 0.00 904 68.66 0.1595
2023-02-06 2022-12-31 13F TESLA COM 88160R101 4,359 0 0.00 537 -53.63 0.0993
2022-11-08 2022-09-30 13F TESLA COM 88160R101 4,359 2,906 200.00 1,156 18.20 0.2408
2022-08-08 2022-06-30 13F TESLA COM 88160R101 1,453 934 179.96 978 74.96 0.1934
2022-05-03 2022-03-31 13F TESLA COM 88160R101 519 519 559 0.1000
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.