Tesla, Inc.
CH ˙ SWX ˙ US88160R1014
SecurityCH:TSLA / Tesla, Inc.
InstitutionWeiss Asset Management LP
Latest Disclosed Ownership129,508 shares
Latest Disclosed Value $ 48,144,599
Weiss Asset Management LP ownership in TSLA / Tesla, Inc.

On May 15, 2026 - Weiss Asset Management LP filed a 13F-HR form disclosing ownership of 129,508 shares of Tesla, Inc. (CH:TSLA) valued at $48,144,599 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 91,346 shares of Tesla, Inc.. This represents a change in shares of 41.78% during the quarter.

Weiss Asset Management LP has a history of taking positions in derivatives of the underlying security (TSLA) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CH:TSLA / Tesla, Inc. Historical Put/Call Ratio
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 TESLA COM 88160R101 129,508 38,162 41.78 48,145 17.20 0.8142
2026-02-17 2025-12-31 13F TESLA COM 88160R101 91,346 -407,909 -81.70 41,080 -81.50 0.5751
2025-11-14 2025-09-30 13F TESLA COM 88160R101 499,255 471,916 1,726.16 222,029 2,456.75 2.6904
2025-08-14 2025-06-30 13F TESLA COM 88160R101 27,339 -443,169 -94.19 8,685 -92.88 0.1003
2025-05-15 2025-03-31 13F TESLA COM 88160R101 470,508 470,508 121,937 2.4581
2025-02-14 2024-12-31 13F TESLA COM 88160R101 0 -20,050 -100.00 0 -100.00
2024-11-14 2024-09-30 13F TESLA COM 88160R101 20,050 20,050 5,246 0.1208
2023-11-14 2023-09-30 13F TESLA COM 88160R101 0 -881 -100.00 0 -100.00
2023-08-11 2023-06-30 13F TESLA COM 88160R101 881 881 231 0.0177
2023-02-14 2022-12-31 13F TESLA COM 88160R101 0 -23,642 -100.00 0 -100.00
2022-12-05 2022-09-30 13F/A-2 TESLA COM 88160R101 23,642 18,088 325.68 6,271 67.67 0.1544
2022-11-14 2022-09-30 13F/A-1 TESLA COM 88160R101 23,642 18,088 6,271 0.1446
2022-11-14 2022-09-30 13F TESLA COM 88160R101 23,642 18,088 6,271 0.1446
2022-08-15 2022-06-30 13F TESLA COM 88160R101 5,554 3,275 143.70 3,740 52.28 0.0915
2022-05-13 2022-03-31 13F TESLA COM 88160R101 2,279 850 59.48 2,456 62.65 0.0510
2022-02-14 2021-12-31 13F TESLA COM 88160R101 1,429 1,429 1,510 0.0324
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2024-05-13 2024-03-31 13F TESLA COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-12 2023-12-31 13F TESLA COM Call 125,000 31,060 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-11-14 2025-09-30 13F TESLA COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-08-14 2025-06-30 13F TESLA COM Put 100,000 31,766 n/a n/a n/a
2024-05-13 2024-03-31 13F TESLA COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-12 2023-12-31 13F TESLA COM Put 150,000 37,272 n/a n/a n/a
2023-02-14 2022-12-31 13F TESLA COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-12-05 2022-09-30 13F/A TESLA COM Put 21,000 5,570 n/a n/a n/a
2022-11-14 2022-09-30 13F/A TESLA COM Put 21,000 5,570 n/a n/a n/a
2022-11-14 2022-09-30 13F TESLA COM Put 21,000 5,570 n/a n/a n/a
2023-11-16 2021-06-30 13F/A TESLA COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-08-13 2021-06-30 13F TESLA COM Put 0 0 n/a n/a n/a
2021-05-14 2021-03-31 13F TESLA COM Put 39,500 26,383 n/a n/a n/a
2019-05-17 2019-03-31 13F/A TESLA COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-02-14 2018-12-31 13F TESLA COM Put 220,000 73,216 n/a n/a n/a
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.