Tower Semiconductor Ltd.
US ˙ NasdaqGS ˙ IL0010823792

SecurityTSEM / Tower Semiconductor Ltd.
InstitutionWolverine Trading, Llc
Latest Disclosed Ownership43,657 shares
Latest Disclosed Value $ 3,078,255
Wolverine Trading, Llc ownership in TSEM / Tower Semiconductor Ltd.

On November 14, 2025 - Wolverine Trading, Llc filed a 13F-HR form disclosing ownership of 43,657 shares of Tower Semiconductor Ltd. (US:TSEM) valued at $3,156,401 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 18, 2025 disclosing 12,973 shares of Tower Semiconductor Ltd.. This represents a change in shares of 236.52% during the quarter. The current value of the position is $11,696,147 USD.

Wolverine Trading, Llc has a history of taking positions in derivatives of the underlying security (TSEM) in the form of stock options. The firm currently holds call options representing 55,100 of underlying shares valued at $3,885,101 USD and put options representing 30,900 of underlying shares valued at $2,178,759 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.

TSEM / Tower Semiconductor Ltd. 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)
2025-11-14 2025-09-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 43,657 30,684 236.52 3,078 446.71 0.0022
2025-08-18 2025-06-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 12,973 -15,822 -54.95 563 -44.80 0.0006
2025-05-15 2025-03-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 28,795 -40,865 -58.66 1,020 -71.88 0.0012
2025-02-14 2024-12-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 69,660 42,160 153.31 3,628 200.50 0.0034
2024-11-14 2024-09-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 27,500 -95,464 -77.64 1,208 -75.03 0.0013
2024-08-14 2024-06-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 122,964 -53,641 -30.37 4,834 -18.18 0.0051
2024-05-15 2024-03-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 176,605 50,430 39.97 5,907 53.43 0.0060
2024-02-14 2023-12-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 126,175 59,317 88.72 3,851 134.47 0.0040
2023-11-15 2023-09-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 66,858 66,858 1,642 0.0017
2022-11-14 2022-09-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 0 -4,316 -100.00 0 -100.00
2022-08-15 2022-06-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 4,316 4,316 201 0.0003
2022-05-16 2022-03-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 0 -55,089 -100.00 0 -100.00
2022-02-14 2021-12-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 55,089 22,740 70.30 2,159 120.08 0.0026
2021-11-12 2021-09-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 32,349 304 0.95 981 3.37 0.0011
2021-08-06 2021-06-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 32,045 2,476 8.37 949 16.01 0.0015
2021-05-14 2021-03-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 29,569 -30,465 -50.75 818 -47.50 0.0012
2021-02-12 2020-12-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 60,034 45,114 302.37 1,558 466.55 0.0024
2020-11-13 2020-09-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 14,920 14,920 275 0.0007
2020-08-13 2020-06-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 0 -27,851 -100.00 0 -100.00
2020-05-11 2020-03-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 27,851 6,397 29.82 429 -16.05 0.0013
2020-02-12 2019-12-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 21,454 8,134 61.07 511 103.59 0.0012
2019-11-14 2019-09-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 13,320 13,320 251 0.0007
2019-02-13 2018-12-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 0 -21,107 -100.00 0 -100.00
2018-11-14 2018-09-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 21,107 -10,441 -33.10 459 -45.94 0.0010
2018-08-13 2018-06-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 31,548 0 0.00 849 0.00 0.0020
2018-05-15 2018-03-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 31,548 23,915 313.31 849 226.54 0.0020
2018-02-14 2017-12-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 7,633 7,633 260 0.0009
2017-08-14 2017-06-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 0 -39,968 -100.00 0 -100.00
2017-05-15 2017-03-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 39,968 -20,413 -33.81 930 -19.06 0.0051
2017-02-14 2016-12-31 13F TOWER SEMICONDUCTOR SHS NEW M87915274 60,381 -5,277 -8.04 1,149 17.01 0.0234
2016-11-14 2016-09-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 65,658 12,738 24.07 982 55.63 0.0046
2016-08-17 2016-06-30 13F/A-1 TOWER SEMICONDUCTOR SHS NEW M87915274 52,920 52,920 631 0.0036
2016-08-15 2016-06-30 13F TOWER SEMICONDUCTOR SHS NEW M87915274 52,920 631
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
(%)
2025-11-14 2025-09-30 13F TOWER SEMICONDUCTOR SHS NEW Call 55,100 -12.68 3,885 41.79 n/a n/a n/a
2025-08-18 2025-06-30 13F TOWER SEMICONDUCTOR SHS NEW Call 63,100 -46.25 2,740 -34.12 n/a n/a n/a
2025-05-15 2025-03-31 13F TOWER SEMICONDUCTOR SHS NEW Call 117,400 -5.48 4,159 -35.70 n/a n/a n/a
2025-02-14 2024-12-31 13F TOWER SEMICONDUCTOR SHS NEW Call 124,200 15.32 6,468 36.77 n/a n/a n/a
2024-11-14 2024-09-30 13F TOWER SEMICONDUCTOR SHS NEW Call 107,700 -49.88 4,729 -44.02 n/a n/a n/a
2024-08-14 2024-06-30 13F TOWER SEMICONDUCTOR SHS NEW Call 214,900 -20.58 8,448 -6.67 n/a n/a n/a
2024-05-15 2024-03-31 13F TOWER SEMICONDUCTOR SHS NEW Call 270,600 60.59 9,052 76.02 n/a n/a n/a
2024-02-14 2023-12-31 13F TOWER SEMICONDUCTOR SHS NEW Call 168,500 37.21 5,143 70.55 n/a n/a n/a
2023-11-15 2023-09-30 13F TOWER SEMICONDUCTOR SHS NEW Call 122,800 3,016 n/a n/a n/a
2022-11-14 2022-09-30 13F TOWER SEMICONDUCTOR SHS NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-15 2022-06-30 13F TOWER SEMICONDUCTOR SHS NEW Call 24,300 1,132 n/a n/a n/a
2022-05-16 2022-03-31 13F TOWER SEMICONDUCTOR SHS NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-14 2021-12-31 13F TOWER SEMICONDUCTOR SHS NEW Call 78,500 37.24 3,076 77.29 n/a n/a n/a
2021-11-12 2021-09-30 13F TOWER SEMICONDUCTOR SHS NEW Call 57,200 22.75 1,735 25.72 n/a n/a n/a
2021-08-06 2021-06-30 13F TOWER SEMICONDUCTOR SHS NEW Call 46,600 -28.64 1,380 -23.59 n/a n/a n/a
2021-05-14 2021-03-31 13F TOWER SEMICONDUCTOR SHS NEW Call 65,300 154.09 1,806 170.76 n/a n/a n/a
2021-02-12 2020-12-31 13F TOWER SEMICONDUCTOR SHS NEW Call 25,700 119.66 667 208.80 n/a n/a n/a
2020-11-13 2020-09-30 13F TOWER SEMICONDUCTOR SHS NEW Call 11,700 -65.18 216 -65.71 n/a n/a n/a
2020-08-13 2020-06-30 13F TOWER SEMICONDUCTOR SHS NEW Call 33,600 -58.82 630 -49.88 n/a n/a n/a
2020-05-11 2020-03-31 13F TOWER SEMICONDUCTOR SHS NEW Call 81,600 -22.95 1,257 -50.20 n/a n/a n/a
2020-02-12 2019-12-31 13F TOWER SEMICONDUCTOR SHS NEW Call 105,900 57.12 2,524 99.05 n/a n/a n/a
2019-11-14 2019-09-30 13F TOWER SEMICONDUCTOR SHS NEW Call 67,400 -35.87 1,268 -23.48 n/a n/a n/a
2019-08-20 2019-06-30 13F TOWER SEMICONDUCTOR SHS NEW Call 105,100 1,657 n/a n/a n/a
2019-05-15 2019-03-31 13F TOWER SEMICONDUCTOR SHS NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-02-13 2018-12-31 13F TOWER SEMICONDUCTOR SHS NEW Call 43,000 -45.64 644 -62.58 n/a n/a n/a
2018-11-14 2018-09-30 13F TOWER SEMICONDUCTOR SHS NEW Call 79,100 -21.61 1,721 -36.61 n/a n/a n/a
2018-08-13 2018-06-30 13F TOWER SEMICONDUCTOR SHS NEW Call 100,900 0.00 2,715 0.00 n/a n/a n/a
2018-05-15 2018-03-31 13F TOWER SEMICONDUCTOR SHS NEW Call 100,900 -44.19 2,715 -55.94 n/a n/a n/a
2018-02-14 2017-12-31 13F TOWER SEMICONDUCTOR SHS NEW Call 180,800 6,162 n/a n/a n/a
2017-11-15 2017-09-30 13F TOWER SEMICONDUCTOR SHS NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-08-14 2017-06-30 13F TOWER SEMICONDUCTOR SHS NEW Call 204,700 16.84 4,927 20.91 n/a n/a n/a
2017-05-15 2017-03-31 13F TOWER SEMICONDUCTOR SHS NEW Call 175,200 21.25 4,075 48.18 n/a n/a n/a
2017-02-14 2016-12-31 13F TOWER SEMICONDUCTOR SHS NEW Call 144,500 225.45 2,750 314.16 n/a n/a n/a
2016-11-14 2016-09-30 13F TOWER SEMICONDUCTOR SHS NEW Call 44,400 -35.84 664 -19.52 n/a n/a n/a
2016-08-17 2016-06-30 13F/A TOWER SEMICONDUCTOR SHS NEW Call 69,200 825 n/a n/a n/a
2016-08-15 2016-06-30 13F TOWER SEMICONDUCTOR SHS NEW Call 692 825 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 TOWER SEMICONDUCTOR SHS NEW Put 30,900 89.57 2,179 208.06 n/a n/a n/a
2025-08-18 2025-06-30 13F TOWER SEMICONDUCTOR SHS NEW Put 16,300 -51.63 708 -40.74 n/a n/a n/a
2025-05-15 2025-03-31 13F TOWER SEMICONDUCTOR SHS NEW Put 33,700 -64.86 1,194 -76.11 n/a n/a n/a
2025-02-14 2024-12-31 13F TOWER SEMICONDUCTOR SHS NEW Put 95,900 191.49 4,994 245.84 n/a n/a n/a
2024-11-14 2024-09-30 13F TOWER SEMICONDUCTOR SHS NEW Put 32,900 -82.59 1,445 -80.56 n/a n/a n/a
2024-08-14 2024-06-30 13F TOWER SEMICONDUCTOR SHS NEW Put 189,000 -18.00 7,430 -3.64 n/a n/a n/a
2024-05-15 2024-03-31 13F TOWER SEMICONDUCTOR SHS NEW Put 230,500 49.48 7,710 63.83 n/a n/a n/a
2024-02-14 2023-12-31 13F TOWER SEMICONDUCTOR SHS NEW Put 154,200 68.34 4,706 109.25 n/a n/a n/a
2023-11-15 2023-09-30 13F TOWER SEMICONDUCTOR SHS NEW Put 91,600 2,250 n/a n/a n/a
2022-11-14 2022-09-30 13F TOWER SEMICONDUCTOR SHS NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-15 2022-06-30 13F TOWER SEMICONDUCTOR SHS NEW Put 12,800 596 n/a n/a n/a
2022-05-16 2022-03-31 13F TOWER SEMICONDUCTOR SHS NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-14 2021-12-31 13F TOWER SEMICONDUCTOR SHS NEW Put 15,200 -81.46 596 -76.05 n/a n/a n/a
2021-11-12 2021-09-30 13F TOWER SEMICONDUCTOR SHS NEW Put 82,000 74.47 2,488 78.74 n/a n/a n/a
2021-08-06 2021-06-30 13F TOWER SEMICONDUCTOR SHS NEW Put 47,000 -29.64 1,392 -24.63 n/a n/a n/a
2021-05-14 2021-03-31 13F TOWER SEMICONDUCTOR SHS NEW Put 66,800 -10.93 1,847 -5.14 n/a n/a n/a
2021-02-12 2020-12-31 13F TOWER SEMICONDUCTOR SHS NEW Put 75,000 61.99 1,947 128.25 n/a n/a n/a
2020-11-13 2020-09-30 13F TOWER SEMICONDUCTOR SHS NEW Put 46,300 -28.22 853 -29.45 n/a n/a n/a
2020-08-13 2020-06-30 13F TOWER SEMICONDUCTOR SHS NEW Put 64,500 -18.77 1,209 -1.23 n/a n/a n/a
2020-05-11 2020-03-31 13F TOWER SEMICONDUCTOR SHS NEW Put 79,400 -8.00 1,224 -40.50 n/a n/a n/a
2020-02-12 2019-12-31 13F TOWER SEMICONDUCTOR SHS NEW Put 86,300 55.78 2,057 97.41 n/a n/a n/a
2019-11-14 2019-09-30 13F TOWER SEMICONDUCTOR SHS NEW Put 55,400 12.60 1,042 34.28 n/a n/a n/a
2019-08-20 2019-06-30 13F TOWER SEMICONDUCTOR SHS NEW Put 49,200 776 n/a n/a n/a
2019-05-15 2019-03-31 13F TOWER SEMICONDUCTOR SHS NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-02-13 2018-12-31 13F TOWER SEMICONDUCTOR SHS NEW Put 22,800 -69.80 342 -79.18 n/a n/a n/a
2018-11-14 2018-09-30 13F TOWER SEMICONDUCTOR SHS NEW Put 75,500 -0.92 1,643 -19.89 n/a n/a n/a
2018-08-13 2018-06-30 13F TOWER SEMICONDUCTOR SHS NEW Put 76,200 0.00 2,051 0.00 n/a n/a n/a
2018-05-15 2018-03-31 13F TOWER SEMICONDUCTOR SHS NEW Put 76,200 -0.78 2,051 -21.63 n/a n/a n/a
2018-02-14 2017-12-31 13F TOWER SEMICONDUCTOR SHS NEW Put 76,800 2,617 n/a n/a n/a
2017-11-15 2017-09-30 13F TOWER SEMICONDUCTOR SHS NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2017-08-14 2017-06-30 13F TOWER SEMICONDUCTOR SHS NEW Put 126,400 59.19 3,042 64.70 n/a n/a n/a
2017-05-15 2017-03-31 13F TOWER SEMICONDUCTOR SHS NEW Put 79,400 -38.31 1,847 -24.58 n/a n/a n/a
2017-02-14 2016-12-31 13F TOWER SEMICONDUCTOR SHS NEW Put 128,700 67.14 2,449 112.59 n/a n/a n/a
2016-11-14 2016-09-30 13F TOWER SEMICONDUCTOR SHS NEW Put 77,000 20.69 1,152 51.58 n/a n/a n/a
2016-08-17 2016-06-30 13F/A TOWER SEMICONDUCTOR SHS NEW Put 63,800 760 n/a n/a n/a
2016-08-15 2016-06-30 13F TOWER SEMICONDUCTOR SHS NEW Put 638 760 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.